Stock Purchase Agreement - Global Crossing Ltd., Global Crossing North America Inc. and Citizens Communications Co.


                           STOCK PURCHASE AGREEMENT


                                 by and among


                             GLOBAL CROSSING LTD.,


                      GLOBAL CROSSING NORTH AMERICA, INC.


                                      and


                        CITIZENS COMMUNICATIONS COMPANY


                           Dated as of July 11, 2000

 
                               TABLE OF CONTENTS



                                                                                            Page
                                                                                            ----
                                                                                         
Article 1.  Purchase and Sale................................................................  1
        1.1   General........................................................................  1
        1.2   Delivery of the Shares.........................................................  1
        1.3   Purchase Price; Payment........................................................  2
        1.4   Post-Closing Adjustment........................................................  3
        1.5   Resignations...................................................................  5
        1.6   Closing and Closing Date.......................................................  5
        1.7   Taking of Necessary Action; Further Action.....................................  5

Article 2.  Representations and Warranties Relating to the Sellers...........................  6
        2.1   Organization and Standing......................................................  6
        2.2   Binding Agreement..............................................................  6
        2.3   Absence of Violations or Required Consents.....................................  6
        2.4   Ownership of Stock.............................................................  7
        2.5   Entire Business................................................................  8
        2.6   Financial Information..........................................................  8
        2.7   Title to Assets; Related Matters...............................................  9
        2.8   Absence of Certain Changes, Events and Conditions..............................  9
        2.9   Litigation..................................................................... 10
        2.10  Insurance...................................................................... 10
        2.11  Material Contracts............................................................. 11
        2.12  Permits and Licenses; Compliance with Law...................................... 11
        2.13  Environmental Matters.......................................................... 12
        2.14  Employee Benefit Matters....................................................... 12
        2.15  Labor Relations................................................................ 14
        2.16  Intellectual Property.......................................................... 14
        2.17  Taxes.......................................................................... 14
        2.18  Commissions.................................................................... 15
        2.19  Affiliate Transactions......................................................... 15
        2.20  Telephone Operations........................................................... 15
        2.21  Long Distance Agreements....................................................... 18

Article 3.  Representations and Warranties of the Buyer...................................... 18
        3.1   Organization and Standing...................................................... 18
        3.2   Binding Agreement.............................................................. 18
        3.3   Absence of Violations or Required Consents..................................... 18
        3.4   Litigation..................................................................... 19
        3.5   Commissions.................................................................... 19
        3.6   Financing...................................................................... 19
        3.7   Acquisition of Shares for Investment........................................... 19

Article 4.  Covenants and Agreements......................................................... 20


 

                                                                                        
        4.1   Conduct of the Business Prior to Closing; Access...........................  20
        4.2   Financing Commitments......................................................  24
        4.3   Post-Closing Covenants and Agreements......................................  25
        4.4   Cooperation................................................................  27
        4.5   Confidentiality............................................................  30
        4.6   Public Announcements.......................................................  30
        4.7   No Solicitation............................................................  30
        4.8   No Additional Representations..............................................  30
        4.9   Use of Global Crossing and Frontier Names..................................  31
        4.10  Long Distance Agreements...................................................  31
        4.11  Transition Services........................................................  32
        4.12  Sublease of Premises in GCNA Building......................................  34
        4.13  Intercompany Accounts and Guaranties.......................................  35
        4.14  Capital Expenditures.......................................................  35
        4.15  Non-Compete................................................................  36
        4.16  Transition Plan............................................................  37

Article 5.  Conditions to Obligations of the Buyer.......................................  38
        5.1   Representations and Warranties.............................................  38
        5.2   Performance by the Sellers.................................................  38
        5.3   Certificate................................................................  38
        5.4   Consents; No Objections....................................................  38
        5.5   No Proceedings or Litigation...............................................  39
        5.6   No Material Events.........................................................  39

Article 6.  Conditions to Obligations of the Seller......................................  39
        6.1   Representations and Warranties.............................................  39
        6.2   Performance by the Buyer...................................................  39
        6.3   Certificate................................................................  39
        6.4   Consents; No Objections....................................................  40
        6.5   No Proceedings or Litigation...............................................  40
        6.6   Purchase Price Adjustment Limitation.......................................  40

Article 7.  Tax Matters..................................................................  40
        7.1   Liability for Taxes........................................................  40
        7.2   Tax Refunds................................................................  41
        7.3   Adjustment to Purchase Price...............................................  42
        7.4   Amended Returns............................................................  42
        7.5   Tax Returns................................................................  42
        7.6   Tax Contest Provisions.....................................................  43
        7.7   Termination of Tax Allocation Agreements...................................  44
        7.8   Assistance and Cooperation.................................................  44
        7.9   Transfer and Conveyance Taxes..............................................  44
        7.10  Global Crossing Options....................................................  44
        7.11  Carryback of Net Operating Losses..........................................  45
        7.12  Survival...................................................................  45

Article 8.  Employee Benefit and Labor Matters...........................................  45
        8.1   Continuation of Employee Benefits..........................................  45


 

                                                                                        
        8.2   Termination of Participation in Employee Benefit Plans; Defined
                 Benefit Pension Plans.................................................... 46
        8.3   Defined Contribution Plan................................................... 47
        8.4   Post-Retirement Benefits.................................................... 48
        8.5   Collective Bargaining Agreements............................................ 49
        8.6   WARN........................................................................ 49
        8.7   Annual Incentive Compensation............................................... 49

Article 9.  Indemnification............................................................... 50
        9.1   Indemnification by the Sellers.............................................. 50
        9.2   Indemnification by the Buyer................................................ 50
        9.3   Limitations on Indemnification Claims and Liability......................... 50
        9.4   Computation of Claims and Damages........................................... 52
        9.5   Notice of Claims............................................................ 52
        9.6   Defense of Third Party Claims............................................... 53
        9.7   Special Indemnification Procedures with Respect to Environmental Matters.... 54
        9.8   Probable Liabilities and Assets Lists....................................... 55

Article 10. Definitions................................................................... 55

Article 11. Miscellaneous Provisions...................................................... 68
        11.1  Termination Rights.......................................................... 68
        11.2  Expenses.................................................................... 68
        11.3  Notices..................................................................... 68
        11.4  Benefit and Assignment...................................................... 70
        11.5  Waiver...................................................................... 70
        11.6  Severability................................................................ 71
        11.7  Amendment................................................................... 71
        11.8  Effect and Construction of this Agreement................................... 71
        11.9  Specific Performance........................................................ 71


 
                        INDEX OF ANNEXES AND SCHEDULES



ANNEXES

Annex I   The Companies
Annex II  The Company Subsidiaries


SCHEDULES

Schedule 1.3   Performance Adjustment Calculation Methodology
Schedule 4.11  Transition Services
Disclosure Schedule

 
                           STOCK PURCHASE AGREEMENT


          This STOCK PURCHASE AGREEMENT (this "Agreement") made as of July 11,
2000 by and among Global Crossing Ltd., a company formed under the laws of
Bermuda ("Global"), Global Crossing North America, Inc., a New York corporation
and a wholly owned subsidiary of Global ("GCNA" and together with Global, the
"Sellers"), and Citizens Communications Company, a Delaware corporation (the
"Buyer").


                             W I T N E S S E T H :
                             -------------------  


          WHEREAS, GCNA is the record and beneficial owner of all of the capital
stock of certain corporations (the "Companies") that, together with their wholly
owned subsidiaries, constitute the Frontier LEC Business (as hereinafter
defined); and

          WHEREAS, the Sellers desire to sell to the Buyer all of the
outstanding capital stock of the Companies (the "Sale") and the Buyer desires to
purchase from GCNA at the Closing all of the then outstanding capital stock of
the Companies, in each case upon the terms and subject to the conditions set
forth in this Agreement; and

          WHEREAS, the respective Boards of Directors of the Sellers and the
Buyer have each approved the Sale, the terms of this Agreement and the
transactions contemplated hereby.

          NOW, THEREFORE, in consideration of the mutual promises and covenants
contained herein, the parties, intending legally to be bound, agree as follows:

          [A list of defined terms is provided in Article 10 hereof]

          Article 1.  Purchase and Sale.
                      ----------------- 

          1.1   General.  At the Closing (as defined in Section 1.6 hereof), and
                -------                                                         
subject to the terms and conditions of this Agreement, GCNA agrees to, and
Global agrees to cause GCNA to, sell, assign, convey and deliver to the Buyer,
and the Buyer agrees to purchase, acquire and accept from GCNA, all of the
outstanding shares of capital stock of the Companies as set forth in Annex I
hereto (the "Shares").

          1.2   Delivery of the Shares. At the Closing, and subject to the terms
                ----------------------                                          
and conditions of this Agreement, GCNA shall deliver to the Buyer certificates
representing all of the Shares, duly endorsed in blank for transfer or
accompanied by stock powers duly executed, with all necessary stock transfer
stamps attached thereto and canceled, and such other instruments as shall
reasonably be required to transfer to the Buyer all right, title and interest in
and to the Shares, free and clear of any security interests, pledges, liens,
charges, encumbrances, adverse claims, restrictions or defects in title.  All
such certificates, stock powers and instruments shall be in form and substance
reasonably satisfactory to the Buyer.

 
                                                                               2

          1.3   Purchase Price; Payment.  (a)  The consideration for the sale of
                -----------------------                                         
the Shares shall be the aggregate of (i) $ 3,650,000,000 (Three Billion, Six
Hundred Fifty Million Dollars), minus (ii) the amount of the Combined
Liabilities as of 11:59 p.m., New York City time, on the day immediately
preceding the Closing Date (the "Liabilities Adjustment"), plus (if greater than
or equal to zero) or minus (if less than zero) (iii) the amount of the Combined
Working Capital as of 11:59 p.m., New York City time, on the day immediately
preceding the Closing Date (the "Working Capital Adjustment"), minus (iv) the
Performance Adjustment set forth in Section 1.3(d), if any, subject to
adjustment pursuant to Section 1.4 (the "Purchase Price").

          (b)   On or before ten days prior to the Closing, the Sellers shall
deliver to the Buyer a statement setting forth the amounts estimated in good
faith by the Company to be the amounts of the Liabilities Adjustment, the
Working Capital Adjustment and the Performance Adjustment, if any, as of the
Closing Date (collectively, the "Estimated Adjustment") and the estimated amount
of the aggregate Purchase Price based upon the Estimated Adjustment (the
"Closing Cash Payment").

          (c)   At the Closing, and subject to the terms and conditions of this
Agreement, the Buyer shall pay to GCNA the Closing Cash Payment by wire transfer
in immediately available funds to an account or accounts designated by GCNA not
later than three Business Days prior to the Closing.

          (d)   The "Performance Adjustment," if any, shall be the largest of
(x) the Access Line Deficiency, if any, (y) the Revenue Deficiency, if any, and
(z) the EBITDA Deficiency, if any. For purposes of this Section 1.3(d),

          (i)   The "Access Line Deficiency" means (A) the difference between
     the number of Access Lines billed by the Companies and Company Subsidiaries
     as of the end of the month most recently completed prior to the Closing
     Date and 1,071,644 multiplied by (B) $3,294; provided that there shall be
     no Access Line Deficiency unless the number of Access Lines billed by the
     Companies and Company Subsidiaries as of such date is less than 1,071,644;

          (ii)  The "Revenue Deficiency" means (A) the difference between the
     pro forma revenue for the Frontier LEC Business (calculated as provided in
     Schedule 1.3 hereto) for the 12 calendar months ending as of the end of the
     month most recently completed prior to the Closing Date (the "Pre-Closing
     Pro Forma Revenue) and $805,204,000 multiplied by (B) 4.38; provided that
     there shall be no Revenue Deficiency unless the Pre-Closing Pro Forma
     Revenue is less than $805,204,000; and

          (iii) The "EBITDA Deficiency" means (A) the difference between the
     pro forma earnings before interest, taxes, depreciation and amortization
     ("EBITDA") for the Frontier LEC Business (excluding non-recurring revenues
     and expenses resulting from assets and liabilities being put on the balance
     sheet in the process of determining the amount of Combined Liabilities or
     Combined Working Capital and calculated as provided in Schedule 1.3 hereto)
     for the 12 calendar months ending as of the end of the month most 

 
                                                                               3

     recently completed prior to the Closing Date (the "Pre-Closing Pro Forma
     EBITDA") and $386,769,000 multiplied by (B) 9.13; provided that there shall
     be no EBITDA Deficiency unless the Pre-Closing Pro Forma EBITDA is less
     than $386,769,000.

          (e)   Notwithstanding anything in this Agreement to the contrary,
other than with respect to the calculation of the Performance Adjustment (which
shall be calculated without consideration of whether any matter reflected in
such adjustment also may be reflected in any other adjustment or payment), in no
event shall the Buyer be entitled to receive any duplicate decrease to the
Purchase Price under any adjustment provision hereof or payment under any other
Section of this Agreement relating to any single matter.

          1.4   Post-Closing Adjustment.  (a)  Not later than 75 days after the
                -----------------------                                        
Closing (or such later date on which such statement reasonably can be prepared
and delivered in light of the compliance of  the Buyer with its obligations set
forth in next two succeeding sentences), the Sellers shall cause to be prepared
and shall deliver to the Buyer (i) a statement of the actual amount of the
Combined Liabilities as of 11:59 p.m., New York City time, on the day
immediately preceding the Closing Date, the actual amount of the Combined
Working Capital as of 11:59 p.m., New York City time, on the day immediately
preceding the Closing Date, the actual amount of the Performance Adjustment, if
any, and the actual amount of the Purchase Price derived thereby (the "Closing
Statement") to be prepared in conformity with GAAP consistently applied and on a
basis consistent with the basis used in preparing the financial data and
information described in clauses (ii) and (iii) of Section 2.6(a) and except as
specifically required by the definitions of "Combined Liabilities", "Combined
Working Capital" and "Performance Adjustment", (ii) a determination of the
amount (the "Proposed Adjustment") by which the Purchase Price as then
determined by the Sellers is less than or greater than the Closing Cash Payment
(the amount of such excess or shortfall, as finally determined, is referred to
herein as the "Adjustment"), (iii) a statement of the Probable Liabilities
prepared in accordance with Section 9.8 (the "Probable Liabilities Statement")
and (iv) a statement of the Probable Assets prepared in accordance with Section
9.8 (the "Probable Assets Statement"), in each case certified by
PricewaterhouseCoopers LLP, or other independent accountants for the Sellers.
The Buyer shall provide the Sellers and their independent accountants access at
all reasonable times to the relevant personnel, properties, books and records of
the Frontier LEC Business in the possession of the Buyer and its Affiliates
(including, without limitation, the Companies and Company Subsidiaries) for such
purposes and to assist the Sellers and their independent accountants in
preparing the Closing Statement, the Probable Liabilities Statement and the
Probable Assets Statement.  The Buyer's assistance shall include, without
limitation, the closing of the books of the Frontier LEC Business as of the
Closing, the preparation of schedules supporting the amounts set forth in the
general ledger and other books and records of the Frontier LEC Business, and
such other assistance as the Sellers or their independent accountants may
reasonably request.

          (b)   During the 75-day period following the delivery by the Sellers
of the Closing Statement, the Proposed Adjustment, the Probable Liabilities
Statement and the Probable Assets Statement referred to in Section 1.4(a) (or
such longer period during which such statement and adjustment reasonably can be
reviewed in light of the compliance of the Sellers with their obligations set
forth in next two succeeding sentences), the Buyer and KPMG LLP, independent

 
                                                                               4

accountants for the Buyer (or another nationally recognized accounting firm
selected by the Buyer that is not also retained by the Sellers), will be
permitted to review the working papers of the Sellers and their independent
accountants relating to the preparation of the Closing Statement, the Proposed
Adjustment, the Probable Liabilities Statement and the Probable Assets
Statement. The Sellers shall provide the Buyer and its independent accountants
access at all reasonable times to the relevant personnel, properties, books and
records of the Frontier LEC Business in the possession of the Sellers and their
Affiliates for such purposes and to assist the Buyer and its independent
accountants in reviewing the Closing Statement, the Probable Liabilities
Statement and the Probable Assets Statement. The Sellers' assistance shall
include, without limitation, the preparation of schedules supporting the amounts
set forth in the general ledger and other books and records of the Frontier LEC
Business, and such other assistance as the Buyer or its independent accountants
may reasonably request.

          (c)   Unless the Buyer delivers written notice to the Sellers of its
disagreement with the Closing Statement and the Proposed Adjustment, the
Probable Liabilities Statement and/or the Probable Assets Statement within 75
days following delivery by the Sellers of the Closing Statement, the Proposed
Adjustment, the Probable Liabilities Statement and the Probable Assets
Statement, the Buyer will be deemed to have accepted and agreed to the Closing
Statement and Proposed Adjustment, the Probable Liabilities Statement and/or the
Probable Assets Statement, and such Adjustment, the Probable Liabilities List
and/or the Probable Assets List shall be final and binding. If, within such 75-
day period, the Buyer notifies the Sellers that it disagrees with the Closing
Statement and the Proposed Adjustment, the Probable Liabilities Statement and/or
the Probable Assets Statement, and the Sellers and the Buyer cannot agree with
respect to the Closing Statement and the Proposed Adjustment, the Probable
Liabilities Statement and/or the Probable Assets Statement within 14 days of the
notice of disagreement provided by the Buyer to the Sellers, then the
determination shall be submitted for resolution promptly to an independent
nationally recognized accounting firm jointly selected by the Sellers and the
Buyer (the "Neutral Auditor"), whose determination (the "Neutral Auditor
Determination") shall be instructed by the parties to be made within 30 days and
be final and binding upon all parties hereto. All fees and expenses relating to
the work, if any, to be performed by the Neutral Auditor will be borne (i) by
the Buyer in the same proportion that the aggregate amount of all of the
objections on the Closing Statement, the Probable Liabilities Statement and/or
the Probable Assets Statement that are submitted by the Buyer to the Neutral
Auditor and are unsuccessfully disputed by the Buyer, bear to the total amount
of all of such objections and (ii) by the Sellers in the same proportion that
the aggregate amount of all of the objections on the Closing Statement, the
Probable Liabilities Statement and/or the Probable Assets Statement that are
submitted by the Buyer to the Neutral Auditor and are successfully disputed by
the Buyer, bear to the total amount of all of such objections. The Buyer and the
Sellers shall reimburse the other to the extent the other pays more than the
amount so required pursuant to the preceding sentence. In the event of a Neutral
Auditor Determination, the Neutral Auditor shall deliver a certificate to each
of the Sellers and the Buyer setting forth the amount of the Adjustment, the
Probable Liabilities List and/or the Probable Assets List.

          (d)  If the Adjustment provides that the Closing Cash Payment is
greater than the Purchase Price as finally determined, then the Purchase Price
shall be reduced to the amount as so 

 
                                                                               5

determined and GCNA shall pay to the Buyer an amount equal to the amount of the
Adjustment. If the Adjustment provides that the Closing Cash Payment is less
than the Purchase Price as finally determined, then the Purchase Price shall be
increased to the amount as so determined and the Buyer shall pay to GCNA an
amount equal to the amount of the Adjustment. If the Adjustment provides that
the Closing Cash Payment was equal to the Purchase Price as finally determined,
then no further payments with respect to the Purchase Price shall be made. Any
payment required to be made by GCNA or the Buyer pursuant to this Section 1.4(d)
shall bear interest from the Closing Date through the date of payment at a rate
of interest equal to the prime rate per annum publicly announced from time to
time by The Chase Manhattan Bank, N.A. at its principal office in New York City
and shall be made by wire transfer in immediately available funds to an account
or accounts designated by the party to receive such payment.

          1.5   Resignations.  Prior to or at the Closing, the Sellers will,
                ------------
upon the request of the Buyer, obtain the removal or resignation, effective as
of the Closing, of each of the directors and officers of the Companies and
Company Subsidiaries so requested.

          1.6   Closing and Closing Date.  Unless this Agreement shall have been
                ------------------------
terminated and the transactions herein contemplated shall have been terminated
pursuant to Section 11.1 hereof, the closing (the "Closing") of the transactions
herein contemplated shall take place ten days following the satisfaction of the
conditions set forth in Sections 5.4(a) and 6.4(a) hereof, and the satisfaction
or waiver of the other conditions set forth in Articles 5 and 6 hereof, other
than those that are satisfied on the Closing Date, or at such other time and
date as the Sellers and the Buyer shall agree (such time and date being referred
to herein as the "Closing Date"), at the offices of Simpson Thacher & Bartlett,
425 Lexington Avenue, New York, New York, or at such other place as the Sellers
and the Buyer shall agree. At the Closing, each of the parties hereto shall
take, or cause to be taken, all such actions and deliver, or cause to be
delivered, all such documents, instruments, certificates and other items as may
be required under this Agreement or otherwise, in order to perform or fulfill
all covenants and agreements on its part to be performed at or prior to the
Closing Date.

          1.7   Taking of Necessary Action; Further Action.  Each of the parties
                ------------------------------------------                      
shall use its respective reasonable best efforts to take all such action as may
be necessary or appropriate in order to effectuate the Closing as promptly as
possible. If, on or at any time after the Closing Date, any further reasonable
action is necessary or desirable to carry out the purposes of this Agreement and
to vest the Buyer with full right, title and possession to all assets, property,
rights, privileges, powers, and franchises of the Frontier LEC Business, the
Sellers shall take, and shall ensure that the officers of the Companies are
fully authorized, in the name of the Companies or otherwise, to take, and shall
take, all such lawful and necessary action.

 
                                                                               6

          Article 2.  Representations and Warranties Relating to the Sellers.
                      ------------------------------------------------------ 

          Each of the Sellers represents and warrants to the Buyer as follows:

          2.1   Organization and Standing.  (a) Each of the Sellers is a company
                -------------------------
or a corporation duly incorporated, validly existing, and in good standing under
the laws of the jurisdiction of its organization, and has all requisite
corporate power and authority to own, lease and operate its properties and
assets and to conduct its business as it is now being conducted.

          (b)   Each of the Companies and their respective Subsidiaries (the
"Company Subsidiaries") is a corporation duly incorporated, validly existing,
and in good standing under the laws of the state of its incorporation and has
all requisite corporate power and authority to own, lease and operate its
properties and assets and to conduct its business as it is now being conducted.
Each of the Companies and the Company Subsidiaries is duly qualified to do
business as a foreign corporation and is in good standing under the laws of each
state in which the operation of its business or ownership of its assets makes
such qualification necessary, except where the failure to so qualify or be in
good standing would not reasonably be expected to have a Material Adverse
Effect.

          2.2   Binding Agreement.  Each of the Sellers has all requisite
                -----------------                                        
corporate power and authority to enter into this Agreement, to execute and
deliver this Agreement, to carry out its obligations hereunder and to consummate
the transactions contemplated hereby. The execution and delivery of this
Agreement by the Sellers and the consummation by the Sellers of their
obligations hereunder have been duly and validly authorized by all necessary
corporate and stockholder action on the part of the Sellers. This Agreement has
been duly executed and delivered on behalf of the Sellers and, assuming the due
authorization, execution and delivery by the Buyer, constitutes a legal, valid
and binding obligation of each of the Sellers enforceable in accordance with its
terms.

          2.3   Absence of Violations or Required Consents.  Except as set forth
                ------------------------------------------                      
in Section 2.3 of the Disclosure Schedule and, in the case of clauses (b), (c)
and (d), except for such violations, breaches, defaults, consents, approvals,
authorizations, orders, actions, registrations, filings, declarations,
notifications and Encumbrances that would not reasonably be expected to have a
Material Adverse Effect or materially impair or delay the consummation of the
transactions contemplated hereby, the execution, delivery and performance by the
Sellers of this Agreement do not and will not (a) violate or result in the
breach or default of any provision of Global's memorandum of association or bye-
laws or the certificates of incorporation or by-laws of GCNA, the Companies or
the Company Subsidiaries, (b) violate any Law or Governmental Order applicable
to either Seller or any of the Companies or the Company Subsidiaries or any of
their respective properties or assets, (c) except for the Required Consents,
require any consent, approval, authorization or other order of, action by,
registration or filing with or declaration or notification to any Governmental
Authority or any other Person or (d) result in any violation or breach of,
constitute a default (or event which with the giving of notice, or lapse of time
or both, would become a default) under, require any consent under, or give to
others any rights of termination, amendment, acceleration, suspension,
revocation or cancellation of, or result in the 

 
                                                                               7

creation of any Encumbrance on any of the Sellers', the Companies' or the
Company Subsidiaries' respective assets, or result in the imposition or
acceleration of any payment, time of payment, vesting or increase in the amount
of compensation or benefit payable, pursuant to, any note, bond, mortgage or
indenture, contract, agreement, lease, sublease, license or permit, or franchise
to which either Seller or any Company or Company Subsidiary is a party or by
which their respective assets are bound.

          2.4   Ownership of Stock.  (a) GCNA is the record and beneficial owner
                ------------------
of all of the issued and outstanding shares of capital stock of each of the
Companies.

          (b)   One of the Companies, Frontier Subsidiary Telco Inc. ("FSTI"),
or one or more of the other Company Subsidiaries wholly owned by FSTI, is the
record and beneficial owner of all of the issued and outstanding shares of
capital stock of each of the Company Subsidiaries. The issued and outstanding
shares of capital stock of each of the Company Subsidiaries, and the record
owners thereof, are set forth in Annex II hereto.

          (c)   Other than this Agreement, the shares of capital stock
identified in Annex I and Annex II hereto, and rights or interests created by or
suffered to exist by the Buyer, there are no outstanding options, warrants or
other rights of any kind relating to the sale, issuance or voting of any shares
of capital stock or other ownership interests in any of the Companies or Company
Subsidiaries or any securities convertible into or evidencing the right to
purchase any shares of capital stock or other ownership interests in any of the
Companies or Company Subsidiaries.

          (d)   Upon the consummation of the Sale at the Closing as contemplated
by this Agreement, the Sellers will deliver to the Buyer good title to the
Shares free and clear of any security interests, pledges, liens, charges,
encumbrances, adverse claims, restrictions or defects in title, other than (i)
security interests, pledges, liens, charges, encumbrances, claims or
restrictions created by or suffered to exist by the Buyer and (ii) requirements
of federal and state securities Laws and utilities, telecommunications and other
Laws respecting limitations on the subsequent transfer thereof.

          (e)   Except as set forth in Section 2.4 of the Disclosure Schedule,
other than the Company Subsidiaries, none of the Companies or Company
Subsidiaries owns any shares of capital stock or other ownership interests in
any other Person or any options, warrants or other securities, or other rights
of any kind, convertible into or evidencing the right to purchase any shares of
capital stock or other ownership interests in any other Person.

          2.5   Entire Business.  Except as disclosed in Section 2.5 of the
                ---------------                                            
Disclosure Schedule and except for such matters that are not material to the
Frontier LEC Business (and, in each case, such exceptions being subject to (i)
an obligation of the Sellers to use their reasonable best efforts to effect the
actions required by Section 2.5 of the Disclosure Schedule prior to the Closing
and (ii) the obligations of the Sellers pursuant to Section 1.7 to the extent
that any such required actions have not been effected prior to the Closing), the
Sellers' ownership of the Frontier LEC Business is evidenced solely by the
Shares and the sale, assignment, conveyance and delivery of the Shares to the
Buyer or its permitted assignee pursuant to this Agreement will 

 
                                                                               8

transfer all of the Sellers' and their Affiliates' ownership interests
comprising the Frontier LEC Business.

          2.6   Financial Information.  (a) The (i) business segment information
                ---------------------
for the Frontier LEC Business (identified as "Local Communications Services")
(x) for the three fiscal years ended December 31, 1996, 1997 and 1998 included
in the audited consolidated financial statements of GCNA (formerly named
Frontier Corporation) incorporated by reference in GCNA's Annual Report on Form
10-K for the fiscal year ended December 31, 1998 and (y) for the three-month
periods and nine-month periods ended September 30, 1998 and 1999 included in the
unaudited consolidated financial statements of GCNA included in GCNA's Quarterly
Report on Form 10-Q for the quarterly period ended September 30, 1999; (ii)
segment financial data for the Frontier LEC Business (identified as "Incumbent
Local Exchange Carrier Services") set forth in Note 19 to the audited
consolidated financial statements of Global included in Global's Annual Report
on Form 10-K for the fiscal year ended December 31, 1999; and (iii) business
segment information for the Frontier LEC Business (identified as "Incumbent
Local Exchange Carrier Services") for the three-month period ended March 31,
2000 included in the unaudited consolidated financial statements of Global
included in Global's Quarterly Report on Form 10-Q for the quarterly period
ended March 31, 2000 (in each case subject to the information set forth in the
notes to such financial statements) fairly state in all material respects in
relation to the basic financial statements taken as a whole the financial
information or data set forth therein (subject, in the case of unaudited interim
financial statements, to normal year-end adjustments) and have been prepared in
conformity with GAAP applied on a consistent basis (except as may be indicated
in the notes to such financial statements).

          (b)   The Sellers have furnished to the Buyer the financial statements
of certain of the Companies and Company Subsidiaries contained in filings with
PUCs under applicable regulatory Laws as listed in Section 2.6 of the Disclosure
Schedule (the "Regulatory Financial Statements"). The Regulatory Financial
Statements have been prepared based on the books and records of the relevant
Company or Company Subsidiary in all material respects. Such books and records
have been maintained in all material respects in accordance with the Uniform
System of Accounts, GAAP and, where required by Law, the applicable regulations
of the FCC and relevant PUCs; however, because each such Company or Company
Subsidiary represents only a portion of a larger entity, the Regulatory
Financial Statements are based on the extensive use of estimates and
allocations. The Sellers believe that these estimates and allocations have been
performed on a reasonable basis consistent in all material respects with the
Uniform System of Accounts, GAAP and, where required by Law, the applicable
regulations of the FCC and relevant PUCs.

          2.7   Title to Assets; Related Matters.  Except for Permitted
                --------------------------------                       
Exceptions or as disclosed in Section 2.7 of the Disclosure Schedule and except
for such matters that would not reasonably be expected to have a Material
Adverse Effect, (i) the Companies and the Company Subsidiaries have good, valid
and marketable title (as measured in the context of their current uses) to, or,
in the case of leased or subleased assets or other possessory interests, valid
and subsisting leasehold or other possessory interests (as measured in the
context of their current uses) in, or otherwise have the right to use, all of
the assets of the Frontier LEC Business, free and clear of all Encumbrances
(except for any assets sold or otherwise disposed of, or with 

 
                                                                               9

respect to which the lease, sublease or other right to use such asset has
expired or has been terminated, in each case after the date hereof solely to the
extent permitted under Section 4.1(a) hereof), (ii) such assets constitute all
the assets and rights necessary for the operation of the Frontier LEC Business
as currently conducted, including, without limitation, all interoffice network
facilities and related electronic equipment used in the Frontier LEC Business,
(iii) the Real Property and Equipment are in good operating condition and repair
and maintained in accordance with customary procedures of the Frontier LEC
Business taking into account the age thereof and (iv) to the knowledge of the
Sellers, there are no contractual or legal restrictions to which either Seller
or any of the Companies or Company Subsidiaries is a party or by which the Real
Property is otherwise bound that preclude or restrict the Companies' or Company
Subsidiaries' ability to use the Real Property for the purposes for which it is
currently being used.

          2.8   Absence of Certain Changes, Events and Conditions.  Since
                -------------------------------------------------        
December 31, 1999, except as otherwise provided in or contemplated by this
Agreement or as disclosed in Section 2.8 of the Disclosure Schedule and, with
respect to clauses (a), (b), (d), (f), (g) and (h) (to the extent clause (h)
refers to clause (a), (b), (d), (f) or (g)), except for such matters that,
individually or in the aggregate, would not reasonably be expected to have a
Material Adverse Effect:

          (a)   other than in the ordinary course of business consistent with
     past practice, neither Seller nor any Company or Company Subsidiary has
     sold, transferred, leased, subleased, licensed, encumbered or otherwise
     disposed of any assets of the Frontier LEC Business, other than the sale of
     obsolete Equipment and transfers of cash;

          (b)   (i)  neither Seller nor any Company or Company Subsidiary has
     granted any increase, or announced any increase, in the wages, salaries,
     compensation, bonuses, incentives, pension or other benefits payable to any
     of the officers or employees of the Frontier LEC Business, including,
     without limitation, any increase or change pursuant to any Employee Benefit
     Plan, or (ii) established, increased or accelerated the payment or vesting
     of any benefits under any Employee Benefit Plan with respect to officers or
     employees, in either case except (A) as required by Law, (B) that involve
     only increases consistent with the past practices of the Frontier LEC
     Business, (C) that involve only increases in the ordinary course of
     business, (D) as required under any existing agreement or arrangement or
     (E) that involve increases related to promotions;

          (c)   neither Seller nor any Company or Company Subsidiary has made
     any material change in any method of accounting or accounting practice or
     policy used by the Sellers, the Companies or the Company Subsidiaries with
     respect to the Frontier LEC Business, including, without limitation,
     material changes in assumptions underlying or methods of calculating bad
     debt, contingency or other reserves, or notes or accounts receivable write-
     offs, or in corporate allocation methodology, in each case other than
     changes required by Law or under GAAP;

 
                                                                              10

          (d)   neither Seller nor any Company or Company Subsidiary has
     suffered any casualty loss or damage with respect to any assets of the
     Frontier LEC Business, whether or not covered by insurance;

          (e)   there has not been any Material Adverse Effect;

          (f)   the Frontier LEC Business has been conducted only in the
     ordinary and usual course consistent with past practice;

          (g)   neither Seller nor any Company or Company Subsidiary has
     compromised, settled, granted any waiver or release relating to, or
     otherwise adjusted any Action, Indebtedness or any other claims or rights
     of the Frontier LEC Business; and

          (h)   neither Seller nor any Company or Company Subsidiary has entered
     into any agreement, contract, commitment or arrangement to do any of the
     foregoing.

          2.9   Litigation.  Except as disclosed in Section 2.9 of the
                ----------
Disclosure Schedule and except for such matters that would not reasonably be
expected to have a Material Adverse Effect, as of the date hereof, (i) there are
no Actions against either Sellers or any Company or Company Subsidiary pending,
or, to the knowledge of the Sellers, threatened to be brought by or before any
Governmental Authority, in each case with respect to the Frontier LEC Business,
(ii) neither Seller nor any Company or Company Subsidiary is subject to any
Governmental Order (nor, to the knowledge of the Sellers, are there any such
Governmental Orders threatened to be imposed by any Governmental Authority), in
each case with respect to the Frontier LEC Business and (iii) there is no Action
pending, or, to the knowledge of the Sellers, threatened to be brought before
any Governmental Authority, that seeks to question, delay or prevent the
consummation of the transactions contemplated hereby.

          2.10  Insurance.  Except as set forth in either Section 2.10 or
                ---------                                                
Section 2.14 of the Disclosure Schedule and except for such matters that would
not reasonably be expected to have a Material Adverse Effect, (i) all insurance
policies to which any Company or Company Subsidiary is a party or under which
such Company or Company Subsidiary is covered as an additional named insured or
otherwise (or replacement policies therefor) are in full force and effect, and
the related Seller or such Company or Company Subsidiary has paid all premiums
due and is not in default, (ii) no notice of cancellation or non-renewal with
respect to, or disallowance of any claim under, any such policy has been
received by the related Seller or such Company or Company Subsidiary and (iii)
neither Seller nor any Company or Company Subsidiary has been refused insurance
with respect to the Frontier LEC Business, nor has coverage with respect to the
Frontier LEC Business been previously canceled or materially limited, by an
insurer to which a Seller or such Company or Company Subsidiary has applied for
such insurance, or with which a Seller or such Company or Company Subsidiary has
held insurance, within the last three years.

          2.11  Material Contracts.  Except as set forth in Section 2.11 of the
                ------------------                                             
Disclosure Schedule and except for such matters which would not reasonably be
expected to have a Material Adverse Effect, (i) Section 2.11 of the Disclosure
Schedule sets forth all Material Contracts as of 

 
                                                                              11

the date hereof, (ii) each agreement, contract, policy, plan, mortgage,
understanding, arrangement or commitment of any Company or Company Subsidiary
that is intended to be binding upon the parties thereto is legal, valid and
binding on the Company or Company Subsidiary party thereto and, to the knowledge
of the Sellers, the other parties thereto, enforceable in accordance with the
terms thereof, (iii) no Company or Company Subsidiary is in default under any
such agreement, contract, policy, plan, mortgage, understanding, arrangement or
commitment and (iv) to the knowledge of the Sellers, no other party to any such
agreement, contract, policy, plan, mortgage, understanding, arrangement or
commitment has breached or is in default thereunder.

          2.12  Permits and Licenses; Compliance with Law.  (a)  Except as
                -----------------------------------------                 
disclosed in Section 2.12 of the Disclosure Schedule and except for such matters
that would not reasonably be expected to have a Material Adverse Effect, (i) the
Companies and Company Subsidiaries currently hold all the permits, licenses,
authorizations, certificates, exemptions and approvals of Governmental
Authorities or other Persons including, without limitation, Environmental
Permits, necessary for the current operation and the conduct (as it is being
conducted prior to the Closing Date) of the Frontier LEC Business (collectively,
"Permits"), and all Permits are in full force and effect, (ii) neither Seller
nor any Company or Company Subsidiary has received any written notice from any
Governmental Authority revoking, canceling, rescinding, materially modifying or
refusing to renew any Permit and (iii) the Sellers and the Companies and Company
Subsidiaries are in compliance with the requirements of all Permits.

          (b)   Except as disclosed in Section 2.12 of the Disclosure Schedule
and except for such matters that would not reasonably be expected to have a
Material Adverse Effect, (i) the Sellers, the Companies and the Company
Subsidiaries are in compliance with all Laws (including, without limitation,
with respect to affiliate transactions) and Governmental Orders applicable, to
the knowledge of the Sellers, to the conduct of the Frontier LEC Business as it
is being conducted prior to the Closing Date and (ii) neither Seller nor any
Company or Company Subsidiary has been charged since July 1, 1997 by any
Governmental Authority with a violation of any Law or any Governmental Order
relating to the conduct of the Frontier LEC Business which charge remains
unresolved.

          (c)   Except as disclosed in Section 2.12 of the Disclosure Schedule
and except for such matters that would not reasonably be expected to have a
Material Adverse Effect, (i) each of the Companies and Company Subsidiaries
maintains effective tariffs for services that they offer that are subject to
tariff requirements, (ii) each of the Companies and Company Subsidiaries offers
its tariffed services in a manner consistent with the filed tariff, (iii) other
than orders and other requirements of Law applicable generally to local exchange
carriers or another subset of carriers, no order or other requirement of Law has
been received by a Company or Company Subsidiary concluding that its tariff is
unlawful, (iv) other than orders and other requirements of Law applicable
generally to local exchange carriers or another subset of carriers, no order or
other requirement of Law has been received by a Company or Company Subsidiary
since December 31, 1999 suspending a tariff, which suspension remains in effect
as of the date hereof and (v) each Company and Company Subsidiary with a tariff
in effect has taken steps in the ordinary course of business to maintain the
effectiveness of its tariffs and to enforce applicable terms and conditions in a
manner that is not unreasonably discriminatory.

 
                                                                              12


          2.13  Environmental Matters.  Except as disclosed in Section 2.13 of
                ---------------------                                         
the Disclosure Schedule and except for such matters that would not reasonably be
expected to have a Material Adverse Effect, to the knowledge of the Sellers, (i)
Hazardous Materials have not been Released on any Real Property except in
compliance with applicable Law; (ii) there have been no events related to the
Companies, the Company Subsidiaries or the Real Property that would reasonably
be expected to give rise to liability under any Environmental Law; (iii) the
Sellers, the Companies and the Company Subsidiaries are now, and have for the
past three years been, in compliance with all applicable Environmental Laws
relating to the Frontier LEC Business and there are no extant conditions that
would reasonably be expected to constitute an impediment to such compliance in
the future; (iv) the Sellers, the Companies and the Company Subsidiaries have
disposed of all wastes containing Hazardous Materials arising from or otherwise
relating to the Frontier LEC Business, in compliance with all applicable
Environmental Laws (including the filing of any required reports with respect
thereto) and Environmental Permits; (v) there are no pending or threatened
Environmental Claims against the Sellers, the Companies or the Company
Subsidiaries relating to the Real Property or the operations of the Frontier LEC
Business; (vi) there is no environmental remediation or other environmental
response occurring on any Real Property (including any easements, rights-of-way
or other possessory interests in the real property of others) nor has any
Company or Company Subsidiary issued a request for proposal or otherwise
requested an environmental contractor to begin plans for any such environmental
remediation or other environmental response; and (vii) no Company or Company
Subsidiary has received any notice, or has knowledge of any circumstances
related to liability, under CERCLA or any analogous state law.

          2.14  Employee Benefit Matters.  The Sellers have delivered or made
                ------------------------                                     
available to the Buyer copies of all Employee Benefit Plans, which plans are set
forth in Section 2.14 of the Disclosure Schedule. Except as set forth in Section
2.14 of the Disclosure Schedule, all such Employee Benefit Plans are in
compliance with the terms of the applicable plan and the requirements prescribed
by applicable law currently in effect with respect thereto, and each Seller and
each of the Companies and Company Subsidiaries has performed in all respects all
obligations required to be performed by it under, where any such noncompliance
or nonperformance would be reasonably expected to result in liability that would
have a Material Adverse Effect. The pool of Union Employees who are potentially
eligible to qualify for Post-Retirement Welfare Benefits is frozen. Neither
Seller nor any Company or Company Subsidiary has incurred, and, to the knowledge
of the Sellers, no event, transaction or condition has occurred or exists which
is reasonably expected to result in the occurrence of, any liability to the
Pension Benefit Guaranty Corporation (other than contributions to the plan and
premiums to the Pension Benefit Guaranty Corporation, which in either event are
not in default) or any "withdrawal liability" within the meaning of Section 4201
of ERISA, or any other liability pursuant to Title I or IV of ERISA or the
penalty, excise tax or joint and several liability provisions of the Code
relating to employee benefit plans, in any such case relating to any Employee
Benefit Plan or any pension plan maintained by any company that would be treated
as a single employer with the Sellers, the Companies or the Company Subsidiaries
under Section 4001 of ERISA or Section 414 of the Code (an "ERISA affiliate"),
where individually or in the aggregate, in any of such events, any such
liability would be reasonably expected to have a Material Adverse Effect. Except
as set forth in Section 2.14 of the Disclosure Schedule, each Employee Benefit
Plan intended to be

 
                                                                              13

"qualified" within the meaning of Section 401(a) of the Code has received a
favorable determination letter that such plan is so qualified and the trusts
maintained thereunder are exempt from taxation under Section 501(a) of the Code,
the Sellers have not received any notices from the Internal Revenue Service that
any such plan is not so qualified, and, to the knowledge of the Sellers, each
such plan is so qualified in form and in operation. Except as set forth in
Section 2.14 of the Disclosure Schedule, the consummation of the transactions
contemplated by this Agreement will not (i) entitle any current or former
employee or officer of any Company or Company Subsidiary or any ERISA affiliate
to severance pay, unemployment compensation or other payment, except as
expressly provided in this Agreement, or (ii) accelerate the time of payment or
vesting, or increase the amount of compensation due any such employee or
officer. There are no pending, or, to the knowledge of the Sellers, threatened
or anticipated claims by or on behalf of any Employee Benefit Plan, by any
employee or beneficiary covered under any such plan, or otherwise involving any
such plan (other than routine claims for benefits) where any such pending,
threatened or anticipated claims would reasonably be expected to have a Material
Adverse Effect. Except as specifically identified in Section 2.14, neither
Company nor any Company Subsidiary, nor Sellers contribute in any multiemployer
plan (within the meaning of Section 3(37) of ERISA) for the benefit of Business
Employees; and to the extent that they do so contribute, all contributions that
are required under the terms of any applicable collective bargaining agreement
or plan to be contributed prior to the Closing Date will have been contributed
as of the Closing Date. All contributions that are due on or before the Closing
Date to any other Employee Benefit Plans, including without limitation salary
reduction contributions and matching contributions, will have been contributed
or accrued as of the Closing Date (to the extent such accrual is required under
GAAP), except where the failure to do so would not be reasonably expected to
have a Material Adverse Effect. Neither Seller nor any Companies or Company
Subsidiaries shall grant any additional equity-based awards to any current or
former directors of the Companies or Company Subsidiaries.

          2.15  Labor Relations.  Section 2.15 of the Disclosure Schedule sets
                ---------------                                               
forth a list of all labor organizations recognized as representing the employees
of the Frontier LEC Business. Complete and accurate copies of all collective
bargaining agreements and other labor union contracts between either Sellers or
any Company or Company Subsidiary and any such labor organizations have been
delivered or made available to the Buyer. Other than as set forth in Section
2.15 of the Disclosure Schedule and except for such matters that would not
reasonably be expected to have a Material Adverse Effect, (i) neither Seller nor
any Company or Company Subsidiary is party to any collective bargaining
agreement or other labor union contract applicable to employees of the Frontier
LEC Business, (ii) there are no strikes, slowdowns or work stoppages pending or,
to the knowledge of the Sellers, threatened between the Sellers or any Company
or Company Subsidiary and any employees of the Frontier LEC Business, and the
Frontier LEC Business has not experienced any such strike, slowdown, or work
stoppage within the past two years, (iii) there are no unfair labor practice
complaints pending against either Sellers or any Company or Company Subsidiary
relating to employees of the Frontier LEC Business before the National Labor
Relations Board or any other Governmental Authority or, to the knowledge of the
Sellers, any current union representation questions involving employees of the
Frontier LEC Business and (iv) to the knowledge of the Sellers, the Frontier LEC
Business is in compliance in all respects with its obligations under all Laws
and Governmental Orders governing

 
                                                                              14

its employment practices, including, without limitation, provisions relating to
wages, hours and equal opportunity.

          2.16  Intellectual Property.  Except as disclosed in Section 2.16 of
                ---------------------                                         
the Disclosure Schedule and except for such matters that would not reasonably be
expected to have a Material Adverse Effect, (i) the rights of either Sellers or
any Company or Company Subsidiary in or to the Intellectual Property do not
conflict with or infringe on the rights of any other Person, and neither Seller
nor any Company or Company Subsidiary has received any claim from any Person to
such effect, (ii) the Companies and the Company Subsidiaries own, are licensed
or otherwise have the right to use, and as of the Closing Date the Companies and
the Company Subsidiaries will own, be licensed or otherwise have the right to
use, all Intellectual Property and (iii) to the knowledge of the Sellers, no
other Person is infringing or diluting the rights of the Sellers, the Companies
or the Company Subsidiaries with respect to the Intellectual Property.

          2.17  Taxes.  Except as disclosed in Section 2.17 of the Disclosure
                -----                                                        
Schedule and except for such matters that would not reasonably be expected to
have a Material Adverse Effect, (a) all Tax Returns required to be filed by the
Sellers, the Companies or the Company Subsidiaries with respect to the Frontier
LEC Business have been timely filed; (b) all Taxes shown on such Tax Returns
have been timely paid other than such Taxes, if any, as are described in Section
2.17 of the Disclosure Schedule and are being contested in good faith and as to
which adequate reserves (determined in accordance with GAAP) have been provided
in the financial statements of the Frontier LEC Business; (c) no audits with
respect to the Companies or Company Subsidiaries are in process, pending or
threatened in writing, no deficiencies or adjustments to Tax Returns exist or
have been asserted in writing with respect to Taxes of the Companies or Company
Subsidiaries, no notice has been received in writing that any Tax Return or
Taxes of the Companies or Company Subsidiaries required to be filed or paid has
not been filed or has not been paid; (d) there are no Tax liens on any of the
assets of the Frontier LEC Business or shares of the Companies or Company
Subsidiaries (other than liens for Taxes that are not yet due and payable); (e)
all Taxes that the Frontier LEC Business is required to withhold or collect have
been duly withheld or collected and, to the extent required, have been paid to
the proper Tax authority; (f) none of the Companies or Company Subsidiaries (i)
is currently or has ever been a member of an affiliated group (other than a
group the common parent of which is any of the Sellers) filing a consolidated
federal income tax return and (ii) has any liability for the Taxes of any person
under Treasury Regulations Section 1.1502-6 (or any similar provision of state,
local or foreign law), or as transferee or successor, by contract or otherwise;
(g) all Tax sharing or similar agreements shall be terminated as of the Closing
Date and, after the Closing Date, the Companies and Company Subsidiaries shall
not be bound thereof or have any liability thereunder; and (h) no consent under
Section 341(f) of the Code has been filed with respect to any of the Companies
or Company Subsidiaries.

          2.18  Commissions.  With the exception of any responsibility that the
                -----------                                                    
Sellers have to Chase Securities Inc. and to Merrill Lynch & Co., whose fees
will be paid by the Sellers, there is no broker or finder or other Person who
has any valid claim against any Company or Company Subsidiary, the Buyer, any of
their respective Affiliates or any of their respective assets for a commission,
finders' fee, brokerage fee or other similar fee in connection with this
Agreement, or 

 
                                                                              15

the transactions contemplated hereby, by virtue of any actions taken by on or
behalf of the Sellers, the Companies, the Company Subsidiaries or any of their
respective officers, employees or agents.

          2.19  Affiliate Transactions.  Except as set forth in Section 2.19 of
                ----------------------                                         
the Disclosure Schedule, except as otherwise provided or permitted in this
Agreement or entered into in the ordinary course of business consistent with
past practice, and except for such matters which would not reasonably be
expected to have a Material Adverse Effect, since September 29, 1999 neither the
Sellers nor any Affiliate thereof that is not one of the Companies or Company
Subsidiaries has engaged in any transaction with any Company or Company
Subsidiary, and neither Seller nor any Affiliate thereof that is not one of the
Companies or Company Subsidiaries is a party to any agreements or arrangements,
including, without limitation, co-location or interconnection agreements, with
any Company or Company Subsidiary that will continue in effect after the Closing
Date for the Companies or Company Subsidiaries that are not terminable by the
Companies or Company Subsidiaries at will without cost, penalty or premium to
the Companies and Company Subsidiaries.

          2.20  Telephone Operations.  Except as disclosed in Section 2.20 of
                --------------------                                         
the Disclosure Schedule and except for such matters that, individually or in the
aggregate, would not reasonably be expected to have a Material Adverse Effect:

          (a)  The financial information for the Frontier LEC Business set forth
     in Annex A to Section 2.20 of the Disclosure Schedule (i) with respect to
     the historical (actual) information as of December 31, 1995, 1996, 1997,
     1998 and 1999 and each of the fiscal years then ended, fairly states the
     financial information set forth therein and has been prepared in conformity
     with GAAP applied on a consistent basis and (ii) with respect to the pro
     forma information for the fiscal year ended December 31, 1999, has been
     prepared in good faith by subjecting the historical (actual) information
     for the fiscal year ended December 31, 1999 set forth in such Annex A to
     the adjustments described in Section 2.20 of the Disclosure Schedule.

          (b)  The schedule of corporate and information technology charges of
     the Frontier LEC Business for the fiscal years ended December 31, 1998 and
     1999 set forth in Annex B to Section 2.20 of the Disclosure Schedule fairly
     states such information in relation to the basic financial information
     based upon the cost allocation methodology described therein.

          (c)  The information for the Frontier LEC Business set forth in Annex
     C to Section 2.20 of the Disclosure Schedule (i) with respect to the pro
     forma information for the fiscal year ended December 31, 1999, has been
     prepared in good faith by subjecting the historical (actual) information
     for the fiscal year ended December 31, 1999 to the adjustments described in
     Section 2.20 of the Disclosure Schedule and (ii) with respect to the number
     of Access Lines, is a true statement of the approximate number of such
     Access Lines as of December 31, 1999.

 
                                                                              16

          (d)  The financial information for the Frontier LEC Business set forth
     in Annex D to Section 2.20 of the Disclosure Schedule (i) with respect to
     historical (actual) information as of December 31, 1995, 1996, 1997 and
     1998 and each of the fiscal years then ended, has been prepared in good
     faith based upon the books and records of the Frontier LEC Business and,
     taken as a whole, fairly states such information in all material respects
     in relation to the basic financial information and (ii) with respect to the
     pro forma information as of December 31, 1999 and for the fiscal year then
     ended, has been prepared in good faith based upon the books and records of
     the Frontier LEC Business after subjecting the historical (actual)
     information for such fiscal year to the adjustments described in Section
     2.20 of the Disclosure Schedule and, taken as a whole, the historical
     (actual) financial information set forth in such Annex fairly states such
     information in all material respects in relation to the basic financial
     information.

          (e)  Except as required by Law or by pool requirements applied
     generally to carriers or a subgroup of carriers, no Company or Company
     Subsidiary has been given written notice by any regulatory authority or
     pool administrator advising it that amounts paid to such Company or Company
     Subsidiary are required to be repaid into a pool or that amounts payable to
     such Company or Company Subsidiary are going to be reduced.

          (f)  No Company or Company Subsidiary has received an order from any
     regulatory authority requiring it to make refunds to its retail customer
     base or any significant portion thereof.

          (g)  No Company or Company Subsidiary has been made subject to any
     order from any regulatory authority requiring it to make a reduction to
     rates generally applicable to its retail customer base or any significant
     portion thereof.

          (h)  No Company or Company Subsidiary has been made subject to a
     moratorium preventing it from seeking an increase in rates for basic
     services.

          (i)  No Company or Company Subsidiary is subject to any requirement of
     Law solely applicable to it and not to any carrier or any subgroup of
     carriers which requires it to make specific material network investments in
     connection with the Frontier LEC Business.

          (j)  No host or hub switch of a Company or a Subsidiary has exhausted
     its capacity to serve the customers who are currently in the area for which
     the switch is intended to be used, except switches scheduled for upgrade or
     expansion during calendar year 2000 or 2001 (which upgrades and expansions
     are included in the amounts of the relevant capital expenditure budgets set
     forth in Section 4.4).

          (k)  The switches of each Company and Company Subsidiary used in the
     telephone service areas covered by the Frontier LEC Business are Class 5
     compliant, can support the utilization of SS7 signaling and are equipped
     for the provision of CLASS services.

 
                                                                              17

          (l)  The Companies and Company Subsidiaries operating in the
     Rochester, New York area telephone service area utilize 20 main hub central
     offices, each of which is interconnected directly or indirectly to the
     other switches through SONET rings using Nortel OC-48 equipment. The
     Companies and Company Subsidiaries operating in the Rochester, New York
     area telephone service area have features in place that are available to
     support local number portability, enhanced 911 services and cellular 911
     services.

          (m)  The Companies and Company Subsidiaries operating in telephone
     service areas outside the Rochester, New York market utilize switches that
     are Class 5 compliant, and are compatible with CLASS features and SS7
     signaling. Where required by an order or other requirements of Law, such
     Companies and Company Subsidiaries have installed features that support
     local number portability, enhanced 911 services and cellular 911 services.

          (n)  The regulatory books of account of the Companies and Company
     Subsidiaries have been maintained in accordance with normal business
     practices, and accurately and fairly reflect in all material respects all
     of the properties, assets, liabilities, transactions and regulatorily
     required appropriate accruals of each Company and Company Subsidiary. The
     continuing property records (CPRs) and other regulatory records related to
     the assets and properties of the Companies and Company Subsidiaries
     maintained by the Companies and Company Subsidiaries conform in all
     material respects with the applicable rules and regulations of the FCC and
     applicable PUCs. The records of the Companies and Company Subsidiaries
     relating to Telephone Plant (the assets used primarily in the local
     exchange carrier operations that would be properly included in the fixed
     assets referenced in Part 32 of the FCC Rules and Regulations (47 C.F.R.,
     Part 32)) have been prepared in good faith and fairly reflect all such
     Telephone Plant.

          (o)  A true and complete list of the approximate number of Access
     Lines of the Companies and Company Subsidiaries in service as of May 31,
     2000, broken down by the categories specified therein, is set forth in
     Section 2.20 of the Disclosure Schedule.

          2.21  Long Distance Agreements.  On or prior to the date hereof,
                ------------------------                                  
Subsidiaries of Global have entered into the Carrier Services Agreement, dated
as of June 19, 2000 (the "Carrier Services Agreement"), and the Asset Purchase
Agreement, dated as of July 11, 2000 (the "Asset Purchase Agreement"), with one
of the Company Subsidiaries. True and complete copies of the Carrier Services
Agreement and the Asset Purchase Agreement have been provided to the Buyer,
together with all amendments, modifications and side letter agreements relating
thereto.


          Article 3.  Representations and Warranties of the Buyer.
                      ------------------------------------------- 

          The Buyer represents and warrants to the Seller as follows:

          3.1  Organization and Standing.  The Buyer is a corporation duly
               -------------------------                                  
incorporated, validly existing, and in good standing under the laws of its
jurisdiction of incorporation and has all 

 
                                                                              18

requisite corporate power and authority to own, lease and operate its properties
and assets and to conduct its business as it is now being conducted.

          3.2  Binding Agreement.  The Buyer has all requisite corporate power
               -----------------                                              
and authority to enter into this Agreement, to execute and deliver this
Agreement, to carry out its obligations hereunder and to consummate the
transactions contemplated hereby. The execution and delivery of this Agreement
by the Buyer and the consummation by the Buyer of its obligations hereunder have
been duly and validly authorized by all necessary corporate and stockholder
action on the part of the Buyer. This Agreement has been duly executed and
delivered on behalf of the Buyer and, assuming the due authorization, execution
and delivery by the Seller, constitutes a legal, valid and binding obligation of
the Buyer enforceable in accordance with its terms.

          3.3  Absence of Violations or Required Consents.  Except as set forth
               ------------------------------------------                      
in Section 3.3 of the Disclosure Schedule and, in the case of clauses (b), (c)
and (d), except for such violations, breaches, defaults, consents, approvals,
authorizations, orders, actions, registrations, filings, declarations,
notifications and Encumbrances that would not reasonably be expected to have a
material adverse effect on the business, results of operations or financial
condition of the Buyer and its Subsidiaries, taken as a whole, or materially
impair or delay the consummation of the transactions contemplated hereby, the
execution, delivery and performance by the Buyer of this Agreement does not and
will not (a) violate or result in the breach or default of any provision of the
certificate or articles of incorporation or by-laws of the Buyer, (b) violate
any Law or Governmental Order applicable to the Buyer or any of its properties
or assets, (c) except for the Required Consents, require any consent, approval,
authorization or other order of, action by, registration or filing with or
declaration or notification to any Governmental Authority or any other Person or
(d) result in any violation or breach of, constitute a default (or event which
with the giving of notice, or lapse of time or both, would become a default)
under, require any consent under, or give to others any rights of termination,
amendment, acceleration, suspension, revocation or cancellation of, or result in
the creation of any Encumbrance on any of the Buyer's assets pursuant to, any
note, bond, mortgage or indenture, contract, agreement, lease, sublease, license
or permit, or franchise to which the Buyer is a party or by which its assets are
bound.

          3.4  Litigation.  Except as described in Section 3.4 of the Disclosure
               ----------                                                       
Schedule, there are no Actions pending or, to the Buyer's knowledge, any Action
threatened to be brought by or before any Governmental Authority, against the
Buyer or any of its Affiliates that (i) seeks to question, delay or prevent the
consummation of the transactions contemplated hereby or (ii) would reasonably be
expected to affect adversely the ability of the Buyer to fulfill its obligations
hereunder, including without limitation, the Buyer's obligations under Article 1
hereof.

          3.5  Commissions.  There is no broker or finder or other Person who
               -----------                                                   
has any valid claim against the Sellers, any of their respective Affiliates or
any of their respective assets for a commission, finders' fee, brokerage fee or
other similar fee in connection with this Agreement, or the transactions
contemplated hereby, by virtue of any actions taken by on or behalf of the Buyer
or its officers, employees or agents.

 
                                                                              19

          3.6  Financing.  The Buyer has delivered to the Sellers true and
               ---------                                                  
complete copies of all commitment letters from commercial banks or other
financing sources setting forth their respective commitments to provide all
necessary financing in connection with the transactions contemplated by this
Agreement (the "Financing Commitments"). The Buyer has on hand funds that,
together with the proceeds of the Financing Commitments, are sufficient to pay
the Purchase Price pursuant to this Agreement and otherwise to satisfy its
obligations hereunder. The Buyer has been advised by the parties providing the
Financing Commitments that none of such parties knows of any fact or
circumstance (including, without limitation, the obligations of the Buyer under
this Agreement) that is reasonably likely to result in any of the conditions to
the Financing Commitments not being satisfied or the funds contemplated by the
Financing Commitments not being available for the transactions contemplated by
this Agreement and the Buyer knows of no such fact or circumstance.

          3.7  Acquisition of Shares for Investment.  The Buyer has such
               ------------------------------------                     
knowledge and experience in financial and business matters that it is capable of
evaluating the merits and risks of its purchase of the Shares. The Buyer is
acquiring the Shares for investment and not with a view toward the distribution
thereof. The Buyer agrees that the Shares may not be sold or otherwise disposed
of without registration under the Securities Act of 1933, as amended, except
pursuant to an exemption from registration available under such Act.


          Article 4.  Covenants and Agreements.
                      ------------------------ 

          4.1  Conduct of the Business Prior to Closing; Access.  The Sellers
               ------------------------------------------------              
covenant as follows:

          (a)  Between the date hereof and the Closing Date, except as
     contemplated by this Agreement, except as described in either Section 2.8
     or Section 4.1 of the Disclosure Schedule, or except with the consent of
     the Buyer (which consent shall not be unreasonably withheld or delayed in
     the case of clauses (i), (iii), (vi), (vii), (viii), (ix), (xi), (xii) and
     (xiii) to the extent clause (xiii) refers to clauses (i), (iii), (vi),
     (vii), (viii), (ix), (xi) or (xii)), the Sellers will cause the Frontier
     LEC Business to be operated in the ordinary course of business consistent
     with past practice (including, without limitation, with respect to
     compliance with Laws and performance under contracts) and will not permit:

                    (i)    any of the assets of the Frontier LEC Business to be
          subjected to any Encumbrance, other than Permitted Exceptions, that
          will not be released at or prior to the Closing Date;

                    (ii)   any changes, including changes to connection,
          disconnection and collection practices, to be made in the operations
          of the Frontier LEC Business that are material to the Frontier LEC
          Business as a whole;

                    (iii)  other than, in each case, in the ordinary course of
          business consistent with past practice, any assets of the Frontier LEC
          Business to be sold,

 
                                                                              20

          transferred, leased, subleased, licensed, encumbered or otherwise
          disposed of (including, without limitation, sales, transfers, leases,
          subleases, licenses or dispositions of material assets to Sellers or
          any of their Subsidiaries other than the Companies and Company
          Subsidiaries), other than the sale of obsolete Equipment and transfers
          of cash;

                    (iv)     (A) any increase, or the announcement of any
          increase, in the wages, salaries, compensation, bonuses, incentives,
          pension or other benefits payable by any Company or Company Subsidiary
          to any of the officers or key employees of the Frontier LEC Business
          to be granted, including, without limitation, any increase or change
          pursuant to any Employee Benefit Plan, or (B) any benefits under any
          Employee Benefit Plan with respect to officers or key employees (or
          material benefits with respect to any employees who are not officers
          or key employees) of the Frontier LEC Business to be established or
          increased or to be promised to be increased, or any payment or vesting
          thereof to be accelerated, in either case except (I) as required by
          Law, (II) that involve only increases in the ordinary course of
          business consistent with the past practices of the Frontier LEC
          Business or (III) as required under any existing agreement or
          arrangement;

                    (v)      any material change in any method of accounting or
          accounting practice or policy used by the Frontier LEC Business to be
          made, including, without limitation, material changes in assumptions
          underlying or methods of calculating bad debt, contingency or other
          reserves, or notes or accounts receivable write-offs, or in corporate
          allocation methodology, in each case other than as required by Law or
          under GAAP;

                    (vi)     any commitments for any Company or Company
          Subsidiary to make capital expenditures in excess of $20,000,000 in
          the aggregate that are not contemplated in the capital improvements
          budgets for 2000 or 2001 set forth in Section 4.1 of the Disclosure
          Schedule;

                    (vii)    any amendment of the certificate of incorporation
          or bylaws of any Company or Company Subsidiary;

                    (viii)   any material Action, Indebtedness or any other
          claims or rights related to the Companies or Company Subsidiaries to
          be compromised, settled or otherwise adjusted, or any waiver or
          release relating thereto to be granted other than (unless such action
          would impose material restrictions or obligations on the Frontier LEC
          Business after the Closing) in the ordinary course of business;

                    (ix)     any new agreement, contract, commitment or
          arrangement, or any amendments or modifications to any existing such
          agreement, contract, commitment or arrangement, to be entered into
          with any Affiliate of any Company 

 
                                                                              21

          or Company Subsidiary (other than with another Company or Company
          Subsidiary) that is material to the Frontier LEC Business or that will
          continue in effect after the Closing Date and not be terminable by
          such Company or Company Subsidiary on not more than 60 days' written
          notice without payment of premium or penalty;

                    (x)      any change in the stock ownership of any Company or
          Company Subsidiary to be made or any interest in any Company or
          Company Subsidiary to be granted or assigned;

                    (xi)     any Indebtedness in excess of a net amount of
          $10,000,000 to be created, incurred, assumed or guaranteed by any
          Company or Company Subsidiary that cannot be prepaid or terminated
          without payment of premium or penalty, except for borrowings under
          existing credit agreements (or replacements therefor on substantially
          the same terms) or the creation of trade payables;

                    (xii)    any new Material Contract (other than those covered
          by clause (ii), (iii) or (ix) above), or any amendments or
          modifications to any existing such Material Contract, to be entered
          into that will continue in effect after the Closing Date and not be
          terminable by the Company or Company Subsidiary on not more than 60
          days' written notice without payment of premium or penalty;

                    (xiii)   any agreement, contract, commitment or arrangement
          to do any of the foregoing to be entered into.

          (b)  Pending the Closing Date, the Sellers shall:

               (1)  Ensure that the Buyer and its representatives are given
          reasonable access during normal business hours to all of the employees
          (including appropriate experts and other knowledgeable personnel),
          properties, books and records of the Companies and Company
          Subsidiaries and that the Buyer and its representatives are furnished
          with such information concerning the Companies and Company
          Subsidiaries as the Buyer may reasonably require, including such
          access and cooperation as may be necessary to allow the Buyer and its
          representatives to:

               (A)  identify those contracts and Permits that require third
          party consent to the transactions contemplated hereby, those that
          expire prior to or soon after the Closing and those that may require
          special documentation at the Closing;

               (B)  review any arrangements with respect to those assets that
          will not be transferred as part of the Frontier LEC Business that
          Buyer may need to replicate or replace at the Closing;

 
                                                                              22

               (C)  determine what changes Buyer may need to make to various
          assets, including information technology assets, to be owned by the
          Companies and the Company Subsidiaries after the Closing;

               (D)  arrange appropriate insurance coverage by the Closing with
          respect to the Companies and the Company Subsidiaries;

               (E)  become familiar with the location and organization of the
          books and records, including any original cost documents and outside
          plant maps;

               (F)  make appropriate arrangements for the continuation of
          ongoing maintenance, construction and plant upgrade activities of the
          Companies and the Company Subsidiaries after the Closing;

               (G)  identify various regulatory mandates applicable to the
          Companies and the Company Subsidiaries and review compliance
          therewith, including matters relating to the National Exchange Carrier
          Association (including the Universal Service Fund and the Local
          Switching Support and Telecommunications Relay Services funds);

               (H)  perform Transaction Screens and/or Phase I environmental
          reviews with respect to each parcel of Real Property at Buyer's
          expense; and

               (I)  obtain title insurance policies and surveys covering Real
          Property at Buyer's expense and provide the title company with such
          instructions, authorizations and affidavits at no cost to the Sellers
          or the Companies or Company Subsidiaries as may be reasonably
          necessary for the title company to issue title policies (based upon
          the most recent assessed value or market value of such parcels) to the
          Buyer, dated as of the Closing Date, for all of the Real Property
          owned by the Companies or Company Subsidiaries with so-called non-
          imputation endorsements;

          provided that this right of access shall not be exercised in any way
          which would unreasonably interfere with the normal operations,
          business or activities of the Sellers or any Company or Company
          Subsidiary;

               (2)  Furnish to the Buyer within 30 Business Days after the end
          of each month ending between the date of this Agreement and the
          Closing Date a statement of income for the Frontier LEC Business for
          the month just ended, on a state by state basis to the extent
          prepared, and within 30 Business Days after the end of each quarter
          ending between the date of this Agreement and the Closing Date a
          balance sheet for the Frontier LEC Business as of the end of such
          quarter;

               (3)  Make available for the Buyer all other routine management
          and statistical reports of the Frontier LEC Business;

 
                                                                              23


               (4)  From time to time, furnish to the Buyer such additional
          information (financial or otherwise) concerning the Frontier LEC
          Business as the Buyer may reasonably request (which right to request
          information shall not be exercised in any way which would unreasonably
          interfere with the normal operations, business or activities of the
          Sellers, the Companies or the Company Subsidiaries);

               (5)  Use, to the extent the Buyer requires audited or reviewed
          financial statements of the Frontier LEC Business in order to comply
          with the reporting requirements of the Securities and Exchange
          Commission (the "SEC") set forth in Regulations S-K and S-X,
          reasonable best efforts to obtain (or, if Buyer proposes to have its
          auditors audit any such financial statements, to permit the Buyer to
          obtain by providing audited consolidating balance sheets as of the end
          of the fiscal years hereinafter described and consolidating income
          statements and statements of cash flows and changes in equity for such
          periods, in each case, for the Companies and the Company Subsidiaries
          in the form required by Regulations S-K and S-X), in either case at
          the Buyer's expense, the required audited or reviewed combined
          financial statements of the Frontier LEC Business covering the fiscal
          years ended December 31, 1998 and 1999 (and each fiscal quarter
          thereof), and to the extent the Closing shall not have occurred prior
          to the end thereof, the fiscal year ending December 31, 2000 (and each
          fiscal quarter thereof) and each subsequent fiscal quarter, reasonably
          sufficient and timely enough to permit the Buyer reasonably to satisfy
          such obligations, including, without limitation, providing reasonable
          access as stated under clause (1) above to any auditors engaged by the
          Buyer for such purpose and delivering one or more representation
          letters from the Sellers to any such auditors as may be reasonably
          requested by the Buyer to allow such auditors to complete any such
          audit or review and to issue an opinion on such financial statements
          acceptable to the SEC;

               (6)  Consult with the Buyer with respect to taking, or permitting
          the Companies and Subsidiaries to take, any material action with
          respect with the Frontier LEC Business other than in the ordinary
          course of business consistent with past business or other than as
          contemplated by this Agreement (including, without limitation, the
          Disclosure Schedule), including, without limitation, consultation
          regarding the negotiation or renegotiation of any collective
          bargaining agreements; provided, however, that, except as required by
          Section 4.1(a), neither Seller nor any of the Companies or Company
          Subsidiaries shall be obligated to accept or follow any advice
          proffered by the Buyer with respect to any such prospective action and
          that such right of consultation shall not entitle the Buyer to
          participate in any such negotiations or renegotiations of collective
          bargaining agreements; and

               (7)  Endeavor with reasonable efforts to notify the Buyer within
          a reasonable period of time after the Sellers have obtained knowledge
          of the occurrence of any circumstance, change in, or effect on the
          Companies or 

 
                                                                              24

          Company Subsidiaries that Sellers believe had or would in the
          reasonably foreseeable future have a Material Adverse Effect.

          4.2  Financing Commitments.  The Buyer covenants as follows:
               ---------------------                                  

          (a)  The Buyer shall use its reasonable best efforts to obtain the
     financing provided for by the Financing Commitments.  Without limiting the
     generality of the foregoing, the Buyer shall not take or fail to take, and
     shall cause its Subsidiaries not to take or fail to take, any action the
     taking of which, or which the failure to take, would reasonably likely
     result in any of the conditions to the Financing Commitments not being
     satisfied or the funds contemplated by the Financing Commitments not being
     available for the transactions contemplated by this Agreement, or that
     would otherwise materially impair or delay the consummation of the
     transactions contemplated hereby.  In the event that such financing or any
     portion thereof becomes unavailable, the Buyer shall use its reasonable
     best efforts promptly to obtain commitment letters for alternative
     financing from other sources sufficient to enable the Buyer to pay the
     Purchase Price pursuant to this Agreement and otherwise to satisfy its
     obligations hereunder.  Any such alternative financing shall be deemed to
     constitute (or to constitute a portion of, as the case may be) "Financing
     Commitments" for purposes of this Agreement.  The Buyer shall furnish to
     the Sellers promptly true and complete copies of any alternative commitment
     letters from commercial banks or other financing sources, all definitive
     loan agreements entered into pursuant to the Financing Commitments and all
     other correspondence or notices from any party providing the Financing
     Commitments relating to the financing.

          (b)  The Buyer shall give prompt notice to the Sellers of the
     occurrence, or non-occurrence, of any fact or circumstance, or of any
     notice from any party providing the Financing Commitments, that is
     reasonably likely to result in any of the conditions to the Financing
     Commitments not being satisfied or the funds contemplated by the Financing
     Commitments not being available for the transactions contemplated by this
     Agreement.

          4.3  Post-Closing Covenants and Agreements.  (a)  From and after the
               -------------------------------------                          
Closing Date, the Sellers shall, at all reasonable times, make available without
cost, for inspection and/or copying for reasonable business purposes by the
Buyer or any of the Companies or Company Subsidiaries, or their representatives,
any books and records of the Frontier LEC Business, whether in electronic or
physical form, that are not in the possession of the Companies and Company
Subsidiaries after the Closing.  Any such books and records shall be preserved
by the Sellers for so long as the Buyer or any Company or Company Subsidiary
shall be obligated by Law to maintain the same.  After the period set forth
above, upon not less than 30 days written notice to the Buyer specifying in
reasonable detail the books and records that neither Seller proposes to destroy,
such Seller may destroy the books and records in its possession unless, before
expiration of such notice period, the Buyer or any of the Companies or Company
Subsidiaries objects in writing to the destruction of any or all of such books
and records, in which case such books and records shall be delivered to the
objecting Person at the expense of the objecting Person.

 
                                                                              25

          (b)   From and after the Closing Date, the Buyer shall, and shall
cause the Companies and Company Subsidiaries to:

          (i)   At all reasonable times, make available without cost, for
     inspection and/or copying for reasonable business purposes by the Sellers
     or their representatives, the books and records of the Companies and
     Company Subsidiaries, whether in electronic or physical form.  Such books
     and records shall be preserved by the Buyer or the Companies and Company
     Subsidiaries until the later of the closing by tax audit of, or the
     expiration of the relevant statute of limitations (including any waiver
     thereof) with respect to, all open tax periods of the Sellers prior to and
     including the Closing Date.  After the period set forth above, upon not
     less than 30 days written notice to the Sellers specifying in reasonable
     detail the books and records that the Buyer or any Company or Company
     Subsidiary proposes to destroy, the Buyer or such Company or Company
     Subsidiary may destroy the books and records in their possession unless,
     before expiration of such notice period, a Seller objects in writing to the
     destruction of any or all of such books and records, in which case such
     books and records shall be delivered to the objecting Person at the expense
     of the objecting Person.  Notwithstanding the foregoing, the Buyer and the
     Companies and Company Subsidiaries shall continue to preserve and, at all
     reasonable times after the Closing Date, to make available without cost,
     for inspection and/or copying by any Person that was a trustee or other
     fiduciary under the Employee Benefit Plans identified in Section 4.3 of the
     Disclosure Schedule, the books and records of such Employee Benefit Plan
     and the books and records of the Companies and Company Subsidiaries
     relating thereto.

          (ii)  (x)  Exculpate, indemnify and hold harmless all past and present
     employees, officers, agents and directors of the Companies and Company
     Subsidiaries to the full extent permitted by law for any acts or omissions
     relating to, or arising out of, the Frontier LEC Business occurring on or
     prior to the Closing Date; (y) cause to be maintained in effect through
     September 28, 2005 the current provisions regarding elimination of
     liability of directors and indemnification of officers and directors
     contained in the certificate of incorporation and by-laws or other
     organizational documents of the Companies and the Company Subsidiaries; and
     (z) not take any action that would cause any directors', officers',
     fiduciaries' or similar insurance and indemnification policies that may be
     maintained by the Sellers for past and present directors and officers of
     the Companies and Company Subsidiaries and trustees of the Employee Benefit
     Plans providing coverage for acts and omissions and other events relating
     to, or arising out of, the Frontier LEC Business occurring at or prior to
     the Closing Date, including, without limitation, in respect of the
     transactions contemplated by this Agreement, not to remain in full force
     and effect.

          (iii) Except for disputes in good faith, honor and comply in all
     material respects with the terms and conditions contained in all contracts
     to which any of the Companies or any of the Company Subsidiaries is a party
     or by which it is bound.

          (c)   Effective as of the Closing Date, the Sellers will have no
obligation to provide insurance coverage for the Companies, the Company
Subsidiaries and the Frontier LEC 

 
                                                                              26

Business for occurrences after the Closing Date and the Buyer will become solely
responsible for all insurance coverage and related risk of loss based on events
occurring on and after the Closing Date with respect to the Companies, the
Company Subsidiaries and the Frontier LEC Business. To the extent that (i) any
insurance policies controlled by the Sellers (the "Sellers' Insurance
Policies"), cover any loss, liability, claim, damage or expense relating to the
Companies, the Company Subsidiaries or the Frontier LEC Business (the "Subject
Liabilities") and relating to or arising out of occurrences prior to the Closing
Date, and (ii) the Sellers' Insurance Policies continue after the Closing to
permit claims to be made thereunder with respect to the Subject Liabilities
relating to or arising out of occurrences prior to the Closing Date ("Subject
Claims"), the Sellers shall cooperate with the Buyer in submitting Subject
Claims on behalf of the Buyer or any Company or Company Subsidiary under the
Sellers' Insurance Policies and the Buyer shall reimburse, indemnify and hold
the Sellers harmless from all out-of-pocket, costs and expenses (including,
without limitation, all retroactive or retrospective premiums related to the
Subject Claims (but not any other present or future premiums), deductibles, out-
of-pocket legal and administrative costs, net Tax costs to the Sellers resulting
from the receipt and payment to the Buyer of any insurance proceeds relating to
any Subject Claim and attorneys' fees under the Sellers' Insurance Policies) of
any nature actually incurred by the Sellers as a result of Subject Claims made
under the Sellers' Insurance Policies. The Sellers shall exercise reasonable
best efforts (which efforts shall not require the Sellers to incur any out-of-
pocket costs or expenses not reimbursed by the Buyer or any other adverse
consequences) to cause the Sellers' Insurance Policies to be modified to allow
for the assignment to the Buyer of all benefits, rights and obligations
thereunder in respect of any Subject Liabilities. To the extent any such
policies are not so assigned, upon receipt by the Sellers of any insurance
proceeds relating to any Subject Claims made under the Sellers' Insurance
Policies, the Sellers will promptly pay such insurance proceeds to the Buyer,
net of any unreimbursed costs and expenses described above.

          (d)   From and after the Closing Date,

          (i)  The Buyer will not, for a period of two years following the
     Closing Date, without the prior written consent of Global, directly or
     indirectly, solicit to hire or hire (or cause or seek to cause to leave the
     employ of Global or any Subsidiary of Global) any employee of Global or any
     Subsidiary of Global with whom the Buyer has had contact or who (or whose
     performance) became known to the Buyer in connection with this Agreement;
     provided, however, that the foregoing provision will not prevent the Buyer
     from hiring any such Person who contacts the Buyer on his or her own
     initiative without any direct or indirect solicitation by or encouragement
     from the Buyer or who contacted the Buyer in response to a general
     advertisement; and.

          (ii)  The Sellers will not, for the period from the date hereof
     through the date that is two years following the Closing Date, without the
     prior written consent of the Buyer, directly or indirectly, solicit to hire
     or hire (or cause or seek to cause to leave the employ of the Companies or
     Company Subsidiaries on the Buyer or any Subsidiary of the Buyer) any
     employee of the Companies or Company Subsidiaries or the Buyer or any
     Subsidiary of the Buyer with whom (other than with respect to the Companies
     and the Company Subsidiaries) the Sellers have had contact or who (or whose
     performance) became known 

 
                                                                              27

     to the Sellers in connection with this Agreement; provided, however, that
     the foregoing provision will not prevent the Sellers from hiring any such
     Person who contacts the Sellers on his or her own initiative without any
     direct or indirect solicitation by or encouragement from the Sellers or who
     contacted the Sellers in response to a general advertisement.

          4.4  Cooperation.  Following the execution of this Agreement, the
               -----------                                                 
Buyer and the Sellers agree as follows:

          (a)  Subject to the terms and conditions of this Agreement, each party
     will use its reasonable best efforts to take, or cause to be taken, all
     actions and to do, or cause to be done, all things necessary, proper or
     advisable, including under applicable Laws and regulations, to consummate
     the Sale and the other transactions contemplated by this Agreement as soon
     as practicable after the date hereof.  In furtherance and not in limitation
     of the foregoing, each party hereto agrees (i) to make an appropriate
     filing of a Notification and Report Form pursuant to the HSR Act with
     respect to the transactions contemplated hereby as promptly as practicable
     after the date hereof and to supply as promptly as practicable any
     additional information and documentary material that may be requested
     pursuant to the HSR Act and to take all other actions necessary to cause
     the expiration or termination of the applicable waiting periods under the
     HSR Act as soon as practicable, (ii) to file all necessary applications for
     Required Consents at the FCC, PUCs and local franchising authorities with
     respect to the transactions contemplated hereby as promptly as practical
     after the date hereof and to supply as promptly as practicable any
     additional information and documentary material that may be requested by
     the FCC, PUCs and local franchising authorities and to take all other
     actions necessary to cause the Required Consents to be obtained as soon as
     practicable and (iii) to obtain all other required consents from third
     parties.  The parties agree to file all necessary applications for Required
     Consents with state PUCs jointly to the extent permitted under Applicable
     Law, and to share counsel whenever feasible and where it does not pose a
     conflict of interest.

          (b)  The Sellers and the Buyer shall, in connection with the efforts
     referenced in Section 4.5(a) to obtain all requisite approvals and
     authorizations for the transactions contemplated by this Agreement under
     the HSR Act or any other Regulatory Law, use its reasonable best efforts to
     (i) cooperate in all respects with each other in connection with any filing
     or submission and in connection with any investigation or other inquiry,
     including any proceeding initiated by a private party, (ii) promptly inform
     the other party of any communication received by such party from, or given
     by such party to, the FCC, PUCs, the Antitrust Division of the Department
     of Justice (the "DOJ") or any other Governmental Entity and of any material
     communication received or given in connection with any proceeding by a
     private party, in each case regarding any of the transactions contemplated
     hereby, and (iii) permit the other party to review any communication (other
     than filings pursuant to the HSR Act) given by it to, and consult with each
     other in advance of any meeting or conference with, the FCC, PUCs, the DOJ
     or any such other Governmental Authority or, in connection with any
     proceeding by a private party, with any other Person, and to the extent
     permitted by the FCC, PUCs, the DOJ or such other applicable Governmental
     Authority or other Person, give the other party the opportunity

 
                                                                              28

     to attend and participate in such meetings and conferences. Neither party
     shall take any action in connection with obtaining any Required Consent
     that is intended to create, allocate, or shift to the other party any
     liability arising from the obtaining of such Required Consent; provided
     that this provision is not intended to limit the rights or obligations of
     either party under this Section 4.4 or any other Section of this Agreement
     or the right of any party to otherwise seek to reduce or eliminate any such
     liability on itself. For purposes of this Agreement, "Regulatory Law" means
     (i) the Sherman Act, as amended, the Clayton Act, as amended, the HSR Act,
     the Federal Trade Commission Act, as amended, the Communications Act, and
     all other federal, state and foreign, if any, Laws that are designed or
     intended to prohibit, restrict or regulate actions having the purpose or
     effect of monopolization or restraint of trade or lessening of competition,
     whether in the communications industry or otherwise, through merger or
     acquisition and (ii) all federal, state and foreign, if any, Laws with
     respect to the transfer, assignment, modification or granting of Permits,
     whether in the public utility or communications industries or otherwise,
     including, without limitation, certificates of public convenience and
     necessity, public interests certificates and radio licenses.

          (c)  In furtherance and not in limitation of the covenants of the
     parties contained in Sections 4.4(a) and 4.4(b), if any administrative or
     judicial action or proceeding, including any proceeding by a private party,
     is instituted (or threatened to be instituted) challenging any transaction
     contemplated by this Agreement as violative of any Regulatory Law, the
     Sellers and Buyer shall cooperate in all respects with each other and use
     their respective reasonable best efforts to contest and resist any such
     action or proceeding and to have vacated, lifted, reversed or overturned
     any decree, judgment, injunction or other order, whether temporary,
     preliminary or permanent, that is in effect and that prohibits, prevents or
     restricts consummation of the transactions contemplated by this Agreement.
     Notwithstanding the foregoing or any other provision of this Agreement,
     nothing in this Section 4.4 shall limit a party's right to terminate this
     Agreement pursuant to Section 11.1 so long as such party has up to then
     complied in all material respects with its obligations under this Section
     4.4.

          (d)  If any objections are asserted with respect to the transactions
     contemplated hereby under any Regulatory Law or if any suit is instituted
     by any Governmental Authority or any private party challenging any of the
     transactions contemplated hereby as violative of any Regulatory Law, each
     of the Sellers and the Buyer shall use its reasonable best efforts to
     resolve any such objections or challenge as such Governmental Authority or
     private party may have to such transactions under such Regulatory Law so as
     to permit consummation of the transactions contemplated by this Agreement.

          (e)  As used in this Section 4.4, "reasonable best efforts" shall not
     require (i) the Buyer or any of its Affiliates to divest or hold separate
     or otherwise take or commit to take any action that limits their freedom of
     action with respect to, or their ability to retain, any of their assets or
     businesses or any other action, in each case that would be reasonably
     expected to have a Material Adverse Effect or Buyer Material Adverse
     Effect, or (ii) either Seller or any of their Affiliates to divest or hold
     separate or otherwise take or 

 
                                                                              29

     commit to take any action that limits their freedom of action with respect
     to, or their ability to retain, any of their assets or businesses or any
     other action, in each case that would be reasonably expected to have a
     Material Adverse Effect or an adverse effect (other than an immaterial
     effect) on the business, results of operations or financial condition of
     the Sellers or their Subsidiaries (other than the Companies and the Company
     Subsidiaries).

          4.5  Confidentiality.
               --------------- 

          (a)  Prior to the Closing Date.  The terms of the Confidentiality
               -------------------------                                   
Agreement are herewith incorporated by reference and shall continue in full
force and effect until the Closing Date and shall remain in effect in accordance
with its terms even if this Agreement is terminated.

          (b)  Financial and Tax Information.  (i)  Before and after the Closing
               -----------------------------                                    
Date, each of the parties shall maintain the confidentiality of the tax
information of the Frontier LEC Business under terms similar to those set forth
in the Confidentiality Agreement with respect to "Evaluation Material" as though
such terms applied to the parties and continued after the Closing Date.

          (ii)  After the Closing Date, the Sellers shall maintain the
confidentiality of the financial information of the Frontier LEC Business prior
to the Closing under terms similar to those set forth in the Confidentiality
Agreement with respect to "Evaluation Material" as though such terms applied to
the Sellers and continued after the Closing Date.

          4.6  Public Announcements.  Except as otherwise required by law or the
               --------------------                                             
rules of any stock exchange or automated quotation system, the parties shall not
issue any report, statement or press release or otherwise make any public
announcement with respect to this Agreement and the other transactions
contemplated hereby without prior consultation with and approval of the other
parties hereto (which approval shall not be unreasonably withheld).

          4.7  No Solicitation.  Other than as specified in this Agreement, the
               ---------------                                                 
Sellers shall not, and shall use their best efforts to cause its officers,
directors, representatives, affiliates or associates not to, (a) initiate
contact with, solicit, encourage or respond to any inquiries or proposals by, or
(b) enter into any discussions or negotiations with, or disclose, directly or
indirectly, any information concerning the Companies and Company Subsidiaries
to, or afford any access to the properties, books and records of the Companies
and Company Subsidiaries to, any Person in connection with any possible proposal
for the acquisition (directly or indirectly, whether by purchase, merger,
consolidation or otherwise) of all or substantially all of the assets, business
or capital stock of the Companies and Company Subsidiaries.  The Seller agrees
to terminate immediately any such discussions or negotiations.

          4.8  No Additional Representations.  THE BUYER ACKNOWLEDGES THAT,
               -----------------------------                               
EXCEPT THOSE REPRESENTATIONS AND WARRANTIES EXPRESSLY SET FORTH IN THIS
AGREEMENT, NEITHER THE SELLER NOR ANY OTHER PERSON HAS MADE ANY REPRESENTATION
OR WARRANTY, EXPRESSED OR IMPLIED, REGARDING THE FRONTIER LEC BUSINESS OR THE
ACCURACY OR COMPLETENESS OF ANY 

 
                                                                              30

INFORMATION FURNISHED OR MADE AVAILABLE TO THE BUYER AND ITS REPRESENTATIVES,
INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTY OR REPRESENTATION AS TO
CONDITION, MERCHANTABILITY OR SUITABILITY AS TO ANY PROPERTIES OR ASSETS OF THE
FRONTIER LEC BUSINESS. THE BUYER FURTHER ACKNOWLEDGES THAT ANY COST ESTIMATES,
PROJECTIONS OR OTHER PREDICTIONS CONTAINED OR REFERRED TO IN THE OFFERING
MATERIALS THAT HAVE BEEN PROVIDED TO THE BUYER ARE NOT AND SHALL NOT BE DEEMED
TO BE REPRESENTATIONS OR WARRANTIES OF THE SELLERS.

          4.9  Use of Global Crossing and Frontier Names.  (a)  After the
               -----------------------------------------                 
Closing Date, neither the Buyer nor any of its Affiliates (including, without
limitation, the Companies and Company Subsidiaries) shall use "Global Crossing"
or "Global" or any name or term confusingly similar to or "Global Crossing" or
"Global" in any corporate name or in connection with the operation of any
business.  Notwithstanding the foregoing, the Companies and Company Subsidiaries
shall have a period of time (which in no event is, except as set forth in
Schedule 4.9(a), to exceed 120 days following the Closing Date) in which to, and
the Buyer shall cause the Companies and Company Subsidiaries to, remove or cover
the names "Global Crossing" or "Global" and any trademarks, tradenames,
servicemarks, trade dress or logos relating to such names from all signs,
billboards, advertising materials, telephone listings, labels, stationery,
office forms and mastheads; provided, however, that during such period of time
                            --------  -------                                 
such names, trademarks, tradenames, servicemarks, trade dress and logos shall be
used (i) only to the extent necessary to avoid financial hardship and (ii) only
to the extent and in the manner that such names, trademarks, tradenames,
servicemarks, trade dress and logos were used by the Companies and Company
Subsidiaries as of immediately prior to the Closing.

          (b)  After the Closing Date, except as set forth in Section 4.9 of the
Disclosure Schedule, neither of the Sellers nor any of their Affiliates shall
use "Frontier" or any name or term confusingly similar to "Frontier" in any
corporate name or in connection with the operation of any business.
Notwithstanding the foregoing, the Sellers and their Affiliates shall have a
period of time (which in no event is, except as set forth in Schedule 4.9(b), to
exceed 120 days following the Closing Date) in which to, and the Sellers shall
cause their Affiliates to, remove or cover the name "Frontier" and any
trademarks, trade names, service marks, trade dress or logos relating to such
names from all signs, billboards, advertising materials, telephone listings,
labels, stationery, office forms and mastheads; provided, however, that during
                                                --------  -------             
such period of time such names, trademarks, trade names, service marks, trade
dress and logos shall be used (i) only to the extent necessary to avoid
financial hardship and (ii) only to the extent and in the manner that such
names, trademarks, trade names, service marks, trade dress and logos were used
by the Sellers and their Affiliates as of immediately prior to the Closing.
This Section 4.9(b) shall not be construed to prohibit the Sellers and their
Affiliates from using the name "Frontier" in connection with the filing of any
Tax Returns required by any Tax authority or jurisdiction for periods prior to
the Closing or the filing of any other documents required by any Governmental
Authority.

          4.10  Long Distance Agreements.  (a) The closing under the Asset
                ------------------------                                  
Purchase Agreement shall occur in accordance with the terms thereof without
creating any liability or 

 
                                                                              31

obligation of any Company or Company Subsidiary thereunder extending beyond the
Closing Date. The Sellers shall use reasonable best efforts to obtain, as soon
as practicable, all required consents necessary for consummation of the Asset
Purchase Agreement.

          (b) The Carrier Service Agreement shall be amended prior to the
Closing as follows:

          (i)   The initial term of the Carrier Service Agreement shall continue
     in effect for a period of three years following the Closing Date.  The
     Buyer may thereafter at its option renew the Carrier Service Agreement for
     up to four consecutive two-year periods.  Renewal shall be automatic unless
     the Carrier Service Agreement is canceled by the Buyer pursuant to Section
     2.3 of the Carrier Service Agreement or is otherwise canceled in accordance
     with the termination provisions of the Carrier Service Agreement.  Sections
     2.2 and 2.3 of the Carrier Service Agreement shall be revised as
     appropriate to eliminate Global's right to terminate the Carrier Service
     Agreement except for breach by the Buyer.

          (ii)  Section 3.9 of the Carrier Service Agreement shall be revised to
     change "then current standard wholesale pricing programs" to "the best
     prices given to another carrier with the same or lower volume or term
     commitments, and the same or substantially similar cost characteristics
     with respect to traffic origination and termination".

          (iii) The Buyer may include at its option any of its present and
     future Subsidiaries as parties to the Carrier Service Agreement, subject to
     the pricing limitation specified immediately below.  Such election shall be
     binding for each included Subsidiary for the remaining term of the Carrier
     Service Agreement.

          (iv)  Pursuant to the Exhibits to the Carrier Service Agreement one of
     Global's Subsidiaries has the right under certain pricing arrangements to
     surcharge an additional four cents per minute if more than a specified
     percentage of traffic originates or terminates in non-RBOC/GTE regions.
     This four cent surcharge shall not be applied under the Carrier Service
     Agreement with respect to long distance end-user customers located in the
     franchise territories of the incumbent local exchange carrier operations of
     the Frontier LEC Business.  This subparagraph does not apply to the Buyer's
     other present or future Subsidiaries.

          (v)   Sections 3.3 and 3.11 of the Carrier Service Agreement shall be
     deleted.

          4.11  Transition Services.  (a)  Following the Closing and for so long
                -------------------                                             
as a Company or Company Subsidiary remains a Subsidiary of the Buyer (but in no
event for a period longer than two years from the Closing Date), the Sellers
agree to provide, or to cause their Affiliates to provide, to the Companies and
Company Subsidiaries, and the Buyer shall pay for, all of the administrative and
support services provided to the Frontier LEC Business by the Sellers as of the
date hereof which are on Schedule 4.11 hereto, at a relative level of service
consistent with that provided by the Sellers to the Frontier LEC Business during
the 12 months preceding the date hereof, unless on or before the date that is
four months after the date hereof (which date may 

 
                                                                              32

up to twice be extended for an additional 30 days at the Buyer's sole option),
the Buyer shall notify the Sellers of any or all of such services that should
not be so provided following the Closing. The services initially so provided
following the Closing shall continue to be provided as set forth in the previous
sentence, and the Buyer shall continue to pay therefor, unless the Buyer shall
have given the Sellers at least three months advance written notice of any or
all of such services the provision of which shall be terminated.

          (b)  Following the Closing and for so long as the Company or Company
Subsidiary currently providing such services remains a Subsidiary of the Buyer
(but in no event for a period longer than two years from the Closing Date), the
Buyer agrees to provide, or to cause its Affiliates to provide, to the Sellers
and their Subsidiaries, and the Sellers shall pay for, all of the administrative
and support services provided by the Frontier LEC Business to the Sellers and
their Subsidiaries (other than the Companies and Company Subsidiaries) as of the
Closing Date which are on Schedule 4.11 hereto, at a relative level of service
consistent with that provided to the Sellers and their Subsidiaries by the
Frontier LEC Business during the 12 months preceding the date hereof, unless on
or before the date that is four months after the date hereof (which date may up
to twice be extended for an additional 30 days at the Sellers' sole option), the
Sellers shall notify the Buyer of any or all of such services that should not be
so provided following the Closing.  The services initially so provided following
the Closing shall continue to be provided as set forth in the previous sentence,
and the Sellers shall continue to pay therefor, unless the Sellers shall have
given the Buyer at least three months advance written notice of any or all of
such services the provision of which shall be terminated.

          (c)  Such services will be provided for a charge equal to the then
current cost of such services (without mark-up) to the Sellers and their
Affiliates or to the Buyer and its Affiliates, as the case may be, determined
and allocated to the Buyer or the Sellers, as the case may be, in a manner
consistent with the determination and allocation of such costs to the Frontier
LEC Business reflected in the financial data and information described in
clauses (ii) and (iii) of Section 2.6(a).  The Buyer and the Sellers agree to
pay, promptly in accordance with their standard payment practices (but in no
event later than 45 days after presentation), any bills and invoices that it
receives from the other party for services provided under this Section 4.11,
subject to receiving, if requested, any reasonably appropriate support
documentation for such bills and invoices.  Such charges shall be billed as of
the end of each calendar month.  Each party shall provide the other at least 60
days' notice of any material increase in the cost of such services prior to the
date such increase will take effect.

          (d)  The parties hereto agree to negotiate in good faith a transition
services agreement with respect to services to be provided by the Sellers to the
Frontier LEC Business, or by the Frontier LEC Business to the Sellers, following
the Closing consistent with the terms of this Section 4.11.

          (e)  Section 2.5 (by reference to Section 2.7) of the Disclosure
Schedule identifies the proposed "Future Allocation" of certain shared or
displaced assets or services relating to the Frontier LEC Business between the
Companies and Company Subsidiaries, on the one hand, and the Sellers, on the
other (the "Scheduled Allocation").  Each of the Buyer and the Sellers agrees to

 
                                                                              33

negotiate in good faith such proposed allocations prior to the Closing with a
view to creating a final allocation which (A) to the extent there exists an
overwhelmingly dominant user or beneficiary of such assets or services,
allocates such asset or service to such user or beneficiary, and (B) otherwise
equitably allocates such assets and services between the Companies and Company
Subsidiaries and the Sellers taking into account the criticality of the function
to each, the cost and burden on the party to whom the asset or service is not
allocated to replace such function in light of such party's other resources, and
the related disruption, and the overall burdens and benefits of the overall
allocation.  If the Buyer and the Sellers are unable to agree on a negotiated
final allocation, the  Scheduled Allocation shall be deemed to constitute the
final allocation and the party to whom such asset or service is allocated (which
shall be the Sellers if no allocation is provided for in the Scheduled
Allocation) will provide the other party access to such asset or service as a
Transition Service under the provisions of this Section 4.11 on the cost basis
described in Section 4.11(c).

          (f)  Consistent with its notice requirements in this Section 4.11, the
Buyer at its sole discretion may choose to migrate any or all of the billing,
ordering, provisioning and other operations support systems being provided under
the transition services arrangement in accordance with Schedule 4.11 to the
Buyer's own platforms.  The Sellers will use its reasonable best efforts to
comply with reasonable data requests (including requests for electronic source
data) for information that is necessary to map, convert and integrate such
systems into the Buyer's or its vendor's platforms.  The Sellers also agree to
use its reasonable best efforts to provide the applicable information required
to migrate all other transition services to the Buyer's or its vendor's systems.
The Buyer agrees that its requests may not impose a material burden on the
operation of the Sellers and their Subsidiaries (including, prior to the
Closing, the Companies and Company Subsidiaries).

          4.12  Sublease of Premises in GCNA Building.  At the Buyer's request,
                -------------------------------------                          
GCNA and the Buyer agree to exercise reasonable good faith efforts after the
execution of this Agreement to negotiate and finalize a Sublease Agreement
pursuant to which GCNA will agree to sublease to Buyer or one of its
Subsidiaries for a period of not less than two years following the Closing Date
(with an option to extend the term thereof to the end of the term of GCNA's
current lease of such premises), a portion of the building located at 180 South
Clinton Avenue, Rochester, New York not to exceed the number of square feet
currently allocated to the Frontier LEC Business and for a rent based on the pro
rata cost allocable to the square feet so subleased, in each case, determined on
a basis consistent with the basis used in preparing the financial data and
information described in clauses (ii) and (iii) of Section 2.6(a) and containing
such other terms and conditions as are customary in such a sublease agreement
(including an indemnity for failure of the Buyer to perform its obligations
under the sublease); provided that, if the consent of the landlord under the
lease is not obtained within three months of the date hereof, then the Buyer
shall have no obligation under this Section so long as the Buyer has complied
with its obligation to exercise reasonable good faith efforts to obtain such
consent in accordance with this Section 4.12.

          4.13  Intercompany Accounts and Guaranties.  (a)  As of the calendar
                ------------------------------------                          
day immediately prior to the Closing Date, except for amounts identified as
"Affiliate Advance Receivables" on the books and records of the Companies and
Company Subsidiaries and any other 

 
                                                                              34

accounts that may not be so canceled under applicable Law, all amounts (x) owed
to any of the Companies or Company Subsidiaries by the Sellers and their
Affiliates (other than the Companies and the Company Subsidiaries) or (y) owed
to the Sellers and their Affiliates (other than the Companies and the Company
Subsidiaries) by any of the Companies or Company Subsidiaries shall be canceled
and extinguished.

          (b)  With respect to all intercompany accounts not so canceled, upon
the Closing the Buyer shall assume responsibility for and shall release the
Sellers and their Affiliates (other than the Companies and the Company
Subsidiaries) from, and indemnify and hold harmless the Sellers and their
Affiliates (other than the Companies and the Company Subsidiaries) from and
against, all liability for, and (to the extent permitted under applicable Law)
shall cause the relevant Companies and Company Subsidiaries to enter into
novation agreements (in form and substance satisfactory to the parties hereto)
with respect to, all amounts owed to any of the Companies or Company
Subsidiaries by the Sellers and their Affiliates (other than the Companies and
the Company Subsidiaries); provided that no such action shall be taken if such
action would be in violation of any Law or would, without the consent of the
Sellers, otherwise result in an adverse effect on either Seller, in which case
the parties hereto shall negotiate in good faith suitable alternative
arrangements that would not be in violation of any Law or result in any adverse
effects.
 
          (c)  The Buyer shall use its best efforts to obtain the release prior
to the Closing of the Sellers and any Affiliate of the Sellers other than the
Companies and the Company Subsidiaries from any and all guarantees of such
Persons of any indebtedness or other obligations of the Frontier LEC Business
and shall indemnify and hold harmless such Persons against any payment that any
of them must make under any of such guarantees and its reasonable costs and
expenses thereunder including, without limitation, reasonable attorney's fees
and costs.

          4.14 Capital Expenditures.  If the aggregate amount of capital
               --------------------                                     
expenditures incurred for assets of the Frontier LEC Business from and including
January 1, 2000 through and including the Closing Date shall not equal or exceed
(i) if the Closing were to occur during the year 2000, a pro rata portion (based
upon the number of elapsed days in such year prior to the Closing) of the
$212,287,000 aggregate 2000 capital expenditures budget or (ii) if the Closing
were to occur after December 31, 2000, the sum of  (x) $212,287,000 and (y) a
pro rata portion (based upon the number of elapsed days in such year prior to
the Closing) of the aggregate $222,800,000 2001 capital expenditures budget,
then the Sellers shall cause an aggregate amount of cash equal to any such
shortfall, not restricted under applicable regulatory Laws as to its use, to pay
for capital expenditures of such Company or Company Subsidiary (the "Capital
Expenditure Cash Fund") to be retained in the accounts of one or more of the
Companies and Company Subsidiaries at the Closing.  The Capital Expenditure Cash
Fund shall not be counted as "Working Capital" for purposes of the adjustment to
Purchase Price pursuant to Sections 1.3 and 1.4.

          4.15 Non-Compete.  (a)  The Sellers covenant and agree that the
               -----------                                               
Sellers and their Subsidiaries, for a period of three years from the Closing
Date, will not, without the Buyer's prior consent, directly or indirectly
compete with the Companies or Company Subsidiaries by engaging 

 
                                                                              35

in local exchange carrier operations, by providing retail long distance services
(other than calling card, toll free and terminating long distance) or by
providing retail data services (other than Internet services and Webhosting
services) in a Restricted Area, except as stated herein.

     (b)   For the purposes of this Section 4.15, a "Restricted Area" means the
telephone service area on the Closing Date of any Company or Company Subsidiary
that is an incumbent local exchange carrier, and in addition any territory
adjacent to such telephone service area and within 20 miles of such telephone
service area, but a Restricted Area shall not include any such adjacent
territory that is within the CMSAs (or equivalent Census Office classification
for an equal or larger populated area) covering the New York City metropolitan
area or covering the Minneapolis-St. Paul metropolitan area.

     (c)   For the purposes of this Section 4.15, a Seller or a Subsidiary shall
not be deemed to compete with a Company or Company Subsidiary if it is engaged
in the provision of local exchange carrier operations, retail long distance
services, or any prohibited retail data services in a Restricted Area by using
services of a Company or Company Subsidiary other than on a reseller or
competitive local exchange carrier basis, or if it is providing as of the
Closing Date any of such services to a customer that is simultaneously being
provided service to multiple locations outside a Restricted Area by a Seller or
its Subsidiary as of the Closing Date.

     (d)   For purposes of this Section 4.15, a Seller or a Subsidiary shall not
be deemed to compete with a Company or Company Subsidiary if it provides any
retail long distance service or retail data service to a customer when: (i) it
has engaged in seeking to win a bid or otherwise to establish the terms and
conditions for the provision of services on a regional, national or global basis
to a customer or prospective customer that is not headquartered in a Restricted
Area, (ii) it has sought from a Company or Company Subsidiary all of such
services that are offered by the Company within a Restricted Area on terms and
conditions, including price and assurance of service quality for such services
that it reasonably deems necessary to provide such services to such customer and
(iii) such Company or Company Subsidiary has failed to timely commit to the
provision of such services on the reasonable terms and conditions sought by such
Seller or Subsidiary or, if it has made such commitment, has failed to timely
provide such services on the terms and conditions to which it has committed.

     (e)   For purposes of this Section 4.15, a Seller or a Subsidiary shall not
be deemed to compete with a Company or Company Subsidiary if it provides any
retail long distance service or retail data service to a customer when: (i) it
has expressed in writing to a Company or Company Subsidiary a firm interest in
seeking to win a bid or otherwise to establish the terms and conditions for the
provision of services on a regional, national, or global basis to a customer or
prospective customer that is headquartered in a Restricted Area, (ii) it has
sought from a Company or Company Subsidiary a commitment to team to win the bid
or otherwise to provide services offered by the Company or Company Subsidiary to
such customer and (iii) such Company or Company Subsidiary has failed to timely
provide to the Seller or Subsidiary the right to include such services in a bid
on a right of first refusal basis.

 
                                                                              36

     (f)  This Section 4.15 shall not be deemed to prohibit the provision by
Seller or a Subsidiary of any wireless service licensed on a multistate basis by
the FCC.

     (g)  This Section 4.15 shall not be construed to prohibit any activity by
an entity in which a Seller or one of its Subsidiaries has an equity ownership
of not more than 15%, or the preexisting operations of any entity that may
acquire a Seller or any of its Affiliates.

     (h)  This Section shall not be construed to prohibit the acquisition by
Seller or one of its Subsidiaries of any business if, upon such acquisition by a
Seller or any of its Subsidiaries, such Seller or Subsidiary uses its reasonable
best efforts to divest or dispose as promptly as practicable on commercially
reasonable terms that portion of such acquired business that may otherwise cause
a breach under this Section 4.15, and the Buyer shall not commence, or if
commenced, will immediately discontinue, any efforts to enforce the foregoing
covenants with respect to such acquisition by suit, petition for injunction or
otherwise, so long as such divestiture or disposal is being pursued in good
faith by such Seller or Subsidiary.

     (i)  The Sellers and the Buyer agree that this covenant not to compete and
its specific limitations constitute a reasonable covenant under the
circumstances and is supported by adequate consideration.

          4.16  Transition Plan.  Within 30 days after the date hereof, the
                ---------------                                            
Buyer shall deliver to the Sellers a list of five proposed representatives to a
joint transition team, which shall include expertise from various functional
specialties associated or involved in providing billing, payroll and other
support services to be provided to the Frontier LEC Business after the Closing.
The Sellers will add their five representatives to such team within 15 days
after receipt of the Buyer's list.  Such team will be responsible for preparing
as soon as reasonably practicable after the date hereof but at least 60 days
prior to the Closing Date a transition plan which will identify and describe
substantially all of the various transition activities that the parties plan to
complete before and after the Closing and any other transfer of control matters
that any party reasonably believes should be addressed in such transition plan.
The Buyer and the Sellers shall use reasonable efforts to cause their
representatives on such transition team to cooperate in good faith and take all
reasonable steps necessary to develop a mutually acceptable transition plan
during such period.

          Article 5.  Conditions to Obligations of the Buyer.
                      -------------------------------------- 

          The obligations of the Buyer to consummate the transactions
contemplated by this Agreement are, at its option, subject to satisfaction of
each of the following conditions:

          5.1  Representations and Warranties.  (a) The representations and
               ------------------------------                              
     warranties of the Sellers contained herein (other than the Special
     Representations) shall be true and correct in all material respects (other
     than those representations and warranties that are qualified by Material
     Adverse Effect, which shall be true and correct in all respects) at and as
     of the Closing Date as though each such representation and warranty were
     made at and as of such time, other than such representations and warranties
     as are made as of a specific date, in each case except for changes that are
     expressly contemplated by this Agreement, and 

 
                                                                              37

     except for such failures to be true and correct that (without regard to
     materiality concepts therein once such failure is established) would not,
     individually or in the aggregate, reasonably be expected to have a Material
     Adverse Effect.

          (b)  The representations and warranties of the Sellers contained in
     Sections 2.4(a), 2.4(c), 2.4(d), 2.5 and 2.6 and the first sentence of
     Section 2.4(b) (collectively, the "Special Representations") shall be true
     and correct in all respects at and as of the Closing Date.

          5.2  Performance by the Sellers.  All of the covenants and agreements
               --------------------------                                      
     to be complied with and performed by the Sellers on or before the Closing
     Date shall have been complied with or performed in all material respects.

          5.3  Certificate.  The Sellers shall have delivered to the Buyer a
               -----------                                                  
     certificate, dated as of the Closing Date, executed on behalf of the
     Sellers by their duly authorized officers to the effect of Sections 5.1 and
     5.2.

          5.4  Consents; No Objections.  (a)  The applicable waiting periods
               -----------------------                                      
     (and any extension thereof) under the HSR Act shall have expired or been
     terminated; and

          (b)  All approvals for the Sale from the FCC and PUCs, and all
     material consents from third parties, shall have been obtained and become
     final and non-appealable (provided that if any appeal or a petition for
     reconsideration is filed after any such approval has been obtained, such
     approval shall be deemed to be final and non-appealable unless the Buyer
     shall have delivered to the Sellers an opinion of counsel rendered in good
     faith that it is probable that such approval will be reversed and/or
     vacated upon any such appeal or petition for reconsideration) (i) other
     than those the failure of which to be obtained would not reasonably be
     expected to have, individually or in the aggregate, a Material Adverse
     Effect, and (ii) without the imposition of conditions that would
     individually or in the aggregate, reasonably be expected to have a Material
     Adverse Effect or a Buyer Material Adverse Effect.

          5.5  No Proceedings or Litigation.  No preliminary or permanent
               ----------------------------                              
     injunction or other order issued by any United States federal or state
     Governmental Authority, nor any Law promulgated or enacted by any United
     States federal or state Governmental Authority, that restrains, enjoins or
     otherwise prohibits the transactions contemplated hereby or limits the
     ability in any respect of the rights of any Company or Company Subsidiary
     to hold its assets and conduct the Frontier LEC Business as it is being
     conducted as of the Closing Date such as to have a Material Adverse Effect
     or a Buyer Material Adverse Effect, or imposes civil or criminal penalties
     on any stockholder, director or officer of the Buyer if such transactions
     are consummated, shall be in effect; provided, however, that the provisions
                                          --------  -------                     
     of this Section 5.5 shall not be available to any party whose failure to
     fulfill its obligations pursuant to Section 4.4 shall have been the cause
     of, or shall have resulted in, such order or injunction.

 
                                                                              38

          5.6  No Material Events.  Since the date hereof, there have not been
               ------------------                                             
     any circumstances, changes in or effects on the Frontier LEC Business that,
     individually or in the aggregate, had or would in the reasonably
     foreseeable future have a Material Adverse Effect.

          Article 6.  Conditions to Obligations of the Seller.
                      --------------------------------------- 

          The obligations of the Seller to consummate the transactions
contemplated by this Agreement are, at its option, subject to satisfaction of
each of the following conditions:
 
          6.1  Representations and Warranties.  The representations and
               ------------------------------                          
     warranties of the Buyer contained herein shall be true and correct in all
     material respects (other than those representations and warranties that are
     qualified by Material Adverse Effect, which shall be true and correct in
     all respects) at and as of the Closing Date as though each such
     representation and warranty were made at and as of such time, other than
     such representations and warranties as are made as of a specific date, in
     each case except for changes that are expressly contemplated by this
     Agreement, and except for such failures to be true and correct that
     (without regard to materiality concepts therein once such failure is
     established) would not, individually or in the aggregate, reasonably be
     expected to have a Material Adverse Effect on the business, results of
     operations or financial condition of the Buyer and its Subsidiaries, taken
     as a whole.

          6.2  Performance by the Buyer.  All of the covenants and agreements to
               ------------------------                                         
     be complied with and performed by the Buyer on or prior to the Closing Date
     shall have been complied with or performed in all material respects.

          6.3  Certificate.  The Buyer shall have delivered to the Sellers a
               -----------                                                  
     certificate, dated as of the Closing Date, executed on behalf of the Buyer
     by its duly authorized officers to the effect of Sections 6.1 and 6.2.

          6.4  Consents; No Objections.  (a)  The applicable waiting periods
               -----------------------                                      
     (and any extension thereof) under the HSR Act shall have expired or been
     terminated; and

          (b)  All approvals for the Sale from the FCC and PUCs, and all
     material consents from third parties, shall have been obtained and become
     final and non-appealable (provided that if any appeal or a petition for
     reconsideration is filed after any such approval has been obtained, such
     approval shall be deemed to be final and non-appealable unless the Seller
     shall have delivered to the Buyer an opinion of counsel rendered in good
     faith that it is probable that such approval will be reversed and/or
     vacated upon any such appeal or petition for reconsideration) (i) other
     than those the failure of which to be obtained would not reasonably be
     expected to have, individually or in the aggregate, a Material Adverse
     Effect and (ii) without the imposition of conditions that would
     individually or in the aggregate, reasonably be expected to have a Material
     Adverse Effect or an adverse effect (other than an immaterial effect) in
     the business, results of operations 

 
                                                                              39

     or financial condition of the Sellers or their Subsidiaries (other than the
     Companies and the Company Subsidiaries).

          6.5  No Proceedings or Litigation.  No preliminary or permanent
               ----------------------------                              
     injunction or other order issued by any United States federal or state
     Governmental Authority, nor any Law promulgated or enacted by any United
     States federal or state Governmental Authority, that restrains, enjoins or
     otherwise prohibits the transactions contemplated hereby or limits the
     ability in any respect of the rights of any Company to hold its assets and
     conduct the Frontier LEC Business as it is being conducted as of the
     Closing Date such as to have a Material Adverse Effect or an adverse effect
     (other than an immaterial effect) in the business, results of operations or
     financial condition of the Sellers or their Subsidiaries (other than the
     Companies and the Company Subsidiaries), or imposes civil or criminal
     penalties on any stockholder, director or officer of the Buyer if such
     transactions are consummated, shall be in effect; provided, however, that
                                                       --------  -------      
     the provisions of this Section 5.5 shall not be available to any party
     whose failure to fulfill its obligations pursuant to Section 4.4 shall have
     been the cause of, or shall have resulted in, such order or injunction.

          6.6  Purchase Price Adjustment Limitation.  The Performance Adjustment
               ------------------------------------                             
     component of the Estimated Adjustment, if any, shall not exceed
     $200,000,000.

          Article 7.  Tax Matters.
                      ----------- 

          7.1  Liability for Taxes.  (a)  The Sellers shall be liable for and
               -------------------                                           
shall indemnify the Buyer as the case may be, for (i) all Taxes (as defined
below) imposed on the Companies or Company Subsidiaries, or for which the
Companies or Company Subsidiaries may otherwise be liable, for any taxable year
or period that ends on or before the Closing Date ("Pre-Closing Tax Periods")
and, with respect to any portion of a taxable year or period beginning before
and ending after the Closing Date ("Straddle Period"), the portion of such
Straddle Period ending on and including the Closing Date, and (ii) all
liabilities imposed on the Companies or Company Subsidiaries on or before the
Closing Date under Treasury Regulations Section 1.1502-6 (or any similar
provision of state, local or foreign law) for Taxes of the Sellers or any other
corporation which is affiliated with Sellers (other than the Companies and
Company Subsidiaries).

          (b)  The Buyer shall be liable for, and shall indemnify the Sellers
and their Affiliates for, all Taxes imposed on the Sellers or any of their
Affiliates with respect to the Companies and Company Subsidiaries for any
taxable year or period that begins after the Closing Date and, with respect to a
Straddle Period, the portion of such Straddle Period beginning after the Closing
Date.

          (c)  For purposes of this Section 7.1, whenever it is necessary to
determine the liability for Taxes of the Companies and Company Subsidiaries for
a portion of a Straddle Period:

                    (i)   real, personal and intangible property Taxes
          ("property Taxes") for the Pre-Closing Tax Period shall equal to the
          amount of such property 

 
                                                                              40

          Taxes for the entire Straddle Period multiplied by a fraction, the
          numerator of which is the number of days during the Straddle Period
          that are in the Pre-Closing Tax Period and the denominator of which is
          the number of days in the Straddle Period; and

                    (ii)   all other Taxes for the Pre-Closing Tax Period shall
          be determined by assuming that the Companies and Company Subsidiaries
          had a taxable year or period that ended at the close of the Closing
          Date.

          (d)  The Buyer covenants that it will not cause or permit any Company
     or Company Subsidiary or any Affiliate of the Buyer (i) to take any action
     on the Closing Date other than in the ordinary course of business,
     including but not limited to the distribution of any dividend or the
     effectuation of any redemption, that could give rise to any Tax liability
     or reduce any Tax attribute of the Sellers or any affiliated group of which
     the Sellers are members or (ii) to make or change any Tax election, amend
     any Tax Return or take any Tax position on any Tax Return, take any action,
     omit to take any action or enter into any transaction that results in any
     increased Tax liability or reduction or any Tax attribute of the Sellers or
     any affiliated group of which the Sellers are members in respect of any
     Pre-Closing Tax Period. The Buyer agrees that the Sellers or any affiliated
     group of which the Sellers are members shall have no Tax liability or
     reduction of any Tax attribute resulting from any action referred to in the
     preceding sentence and agrees to indemnify and hold harmless the Sellers or
     any affiliated group of which the Sellers are members against any such Tax
     and any loss, liability, claim, damage, expense or Tax in connection
     therewith.

          7.2  Tax Refunds. The Sellers shall be entitled to any refund or
               -----------                                                
credit of any Taxes of the Companies and Company Subsidiaries, including
interest paid thereon, with respect to Pre-Closing Tax Periods or the portion of
any Straddle Periods ending on and including the Closing Date. The Sellers shall
have the right to determine whether any claim for refund for such Taxes shall be
made on behalf of the Sellers by the Companies or Company Subsidiaries.  If the
Sellers elect to make a claim for refund, the Buyer, the Companies and the
Company Subsidiaries shall cooperate fully in connection therewith.
Notwithstanding the foregoing, the Sellers shall not be entitled to make any
claim for refund of Taxes which would materially adversely affect the liability
for Taxes of the Buyer, the Companies or the Company Subsidiaries for any period
after the Closing Date without the prior written consent of the Buyer; provided,
however, that such consent shall not be unreasonably withheld and such consent
shall not be necessary to the extent that the Sellers have indemnified the Buyer
against the effects of any such settlement. The Sellers shall reimburse the
Buyer, the Companies and the Company Subsidiaries for reasonable out-of-pocket
expenses incurred in providing such cooperation.

          7.3  Adjustment to Purchase Price. The Buyer and the Sellers agree to
               ----------------------------                                    
report any indemnification payment made by the Sellers under Section 7.1 as an
adjustment to purchase price, contribution to capital, or other non-taxable
amount to the extent that there is substantial authority for such reporting
position under applicable law.

 
                                                                              41

          7.4  Amended Returns.  The Sellers shall be responsible for filing any
               ---------------                                                  
amended consolidated, combined or unitary Tax Returns for any Pre-Closing Tax
Period or Straddle Period of the Company and Company Subsidiaries which are
required as a result of examination adjustments made by the Internal Revenue
Service or by the applicable state, local or foreign taxing authorities for such
taxable years or periods as finally determined; provided, however, that such Tax
Returns, to the extent they relate to the Companies or Company Subsidiaries
shall be prepared in a manner consistent with past practices to the extent that
preparing them in such a manner is permissible by the Internal Revenue Service
or by the applicable state, local or foreign taxing authorities.  The Sellers
shall provide notice to the Buyer of all such provided returns to the extent
they relate to the Companies or Company Subsidiaries.  For those jurisdictions
in which separate Tax Returns are filed by the Company or Company Subsidiaries
for any Pre-Closing Tax Period or Straddle Period, any required amended returns
resulting from such examination adjustments, as finally determined, shall be
prepared by the Sellers and furnished to the Buyer for review and comment ten
days prior to the due date for filing such returns and the Sellers shall
incorporate all reasonable comments of the Buyer.  Buyer shall cause to be
executed all waivers of statute of limitations or powers of attorney as may be
necessary for Sellers to exercise their rights under this Section.

          7.5  Tax Returns.  The Sellers shall prepare, or cause to be prepared,
               -----------                                                      
and file or cause to be filed when due, including extensions thereof, all Tax
Returns that are required to be filed with respect to the Companies and Company
Subsidiaries for Pre-Closing Tax Periods and shall pay any Taxes due in respect
of such Tax Returns, and the Buyer shall file or cause to be filed when due all
Tax Returns that are required to be filed subsequent to the Closing with respect
to the Companies and Company Subsidiaries for taxable years or periods beginning
and ending after the Closing Date and shall timely pay any Taxes due in respect
of such Tax Returns. The Sellers shall have the right to prepare or cause to be
prepared all unitary, combined, or consolidated Tax Returns that are required to
be filed with respect to the Companies and Company Subsidiaries for any Straddle
Period. Buyer shall prepare or cause to be prepared any other Straddle Period
Tax Returns. Any such Straddle Period Tax Return (regardless of which party
prepares it) shall be prepared in a manner consistent with past practices and
without a change of any election or accounting method and shall be submitted by
the preparing party to the other party (together with schedules, statements and
supporting documentation) at least 30 days prior to the due date (including
extension of such Tax Return), provided, however, that with respect to sales tax
returns, such returns shall be submitted by the preparing party to the other
party at least five days prior to the due date. Such other party shall have the
right to review all work papers and procedures used to prepare any such Tax
Return solely to the extent that such work papers and procedures relate to the
Companies and the Company Subsidiaries. If such other party, within ten Business
Days after delivery of any such Tax Return, notifies the preparing party in
writing that it objects to any of the items in such Tax Return solely to the
extent that such items relate to the Companies or the Company Subsidiaries, the
preparing party shall attempt in good faith to resolve the dispute and, if they
are unable to do so, the disputed items shall be resolved (within a reasonable
time, taking into account the deadline for filing such Tax Return) by an
internationally recognized independent accounting firm chosen by and mutually
acceptable to both the Buyer and the Sellers. Upon resolution of all such items,
the relevant Tax Return shall be adjusted to reflect such resolution and shall
be binding upon the parties without further 

 
                                                                              42

adjustment. The costs, fees and expenses of such accounting firm shall be born
equally by the Buyer and the Sellers.

          7.6  Tax Contest Provisions.  Whenever the Buyer receives a notice of
               ----------------------                                          
any pending or threatened Tax audit or assessment for any Pre-Closing Tax Period
or Straddle Period, the Buyer shall promptly inform the Sellers in writing. The
Sellers shall have the right to control, at their own cost, any resulting
proceedings respect to any Pre-Closing Tax Period and to determine whether and
when to settle any such claim, assessment or dispute. The Buyers and the Sellers
shall jointly control any resulting proceedings with respect to any Straddle
Period and shall jointly determine whether and when to settle any such claim,
assessment or dispute. Notwithstanding the foregoing, the Sellers shall not be
entitled to settle, either administratively or after the commencement of
litigation, any claim for Taxes which would materially adversely affect the
liability for Taxes of the Buyer, the Companies or the Company Subsidiaries for
any period after the Closing Date without the prior written consent of the
Buyer. Such consent shall not be unreasonably withheld, and shall not be
necessary to the extent that the Sellers have indemnified the Buyer against the
effects of any such settlement. Whenever any taxing authority sends a notice of
an audit, initiates an examination of any Company or Company Subsidiary or
otherwise asserts a claim, makes an assessment or disputes the amount of Taxes
for any taxable period beginning after the Closing Date, the Sellers shall
promptly inform the Buyer in writing, and the Buyer shall have the right to
control, at its cost, any resulting proceedings and to determine whether and
when to settle any such claim, assessment or dispute. Notwithstanding the
foregoing, the Buyer shall not be entitled to settle, either administratively or
after the commencement of litigation, any claim for Taxes which would materially
adversely affect the liability for Taxes of the Sellers without the prior
written consent of the Sellers, provided that such consent shall not be
unreasonably withheld. The Buyer shall cause to be executed all waivers of
statute of limitations or power of attorneys as may be necessary for the Sellers
to exercise their rights under this Section. The Buyer shall not execute any
waivers of the statute of limitations for the Companies or Company Subsidiaries
for any Pre-Closing Period without the consent of the Sellers.

          7.7  Termination of Tax Allocation Agreements.  Any and all tax
               ----------------------------------------                  
allocation or sharing agreements or arrangements, whether or not written, that
may have been entered into by and between the Sellers and its affiliates, on the
one hand, and the Companies and Company Subsidiaries, on the other hand, shall
be terminated as to the Companies and Company Subsidiaries as of the Closing
Date, and no payments which are owed by or to the Companies or Company
Subsidiaries pursuant thereto shall be made thereunder. After the Closing Date,
this Agreement shall be the sole Tax sharing agreement relating to the Companies
and Company Subsidiaries for all Pre-Closing Tax Periods.

          7.8  Assistance and Cooperation.  Each of the Buyer and the Sellers
               --------------------------                                    
will provide the other with such assistance as may reasonably be requested by
each of them in connection with the preparation of any Tax Return, any audit or
other examination by any taxing authority, or any judicial or administrative
proceedings relating to liability for Taxes, and each provide the other with any
records or information which may be relevant to such Tax Return, audit or
examination, proceedings or determination.  Such assistance shall include making
employees available on a 

 
                                                                              43

mutually convenient basis to provide additional information and explanation of
any material provided hereunder and shall include providing copies of any
relevant Tax Return and supporting work schedules. The party requesting
assistance hereunder shall reimburse the other for reasonable expense incurred
in providing such assistance.

          7.9   Transfer and Conveyance Taxes. The Sellers, on the one hand, and
                -----------------------------                               
the Buyer, on the other hand, shall each be liable for and shall pay one-half of
all applicable sales, transfer, recording, deed, stamp and other similar taxes,
including, without limitation, any real property transfer or gains taxes (if
any), resulting from the consummation of the transactions contemplated by this
Agreement.

          7.10  Global Crossing Options.  (a)  The Sellers shall be entitled to
                -----------------------                                        
claim any and all deductions (the "Option Deductions"), for all federal, state,
local and foreign purposes, attributable to the exercise by any of the employees
of the Frontier LEC Business of any Global stock options, and the Buyer shall
not take, nor permit the Companies or Company Subsidiaries to take, any position
or action (including, without limitation, the filing of any Tax Returns) which
would interfere with, or be inconsistent with, the Sellers claiming the Option
Deductions.

          (b)   If, pursuant to a final determination (within the meaning of
Section 1313 of the Code), the Sellers are not entitled to claim all or any
portion of the Option Deductions, then (i) the Buyer shall, at the Sellers'
expense, take all actions, including without limitation, promptly filing, or
causing the Companies or Company Subsidiaries to file, amended Tax Returns, as
are necessary to allow the Companies or Company Subsidiaries to claim the Option
Deductions, and (ii) shall pay, or cause the Companies or Company Subsidiaries
to pay, to the Sellers all refunds or credits received by the Sellers or the
Companies or Company Subsidiaries attributable to the Option Deductions within
ten days after receipt of such refund (or, in the case of a credit, within ten
days after the credit is allowed or applied against any other Tax liability).

          7.11  Carryback of Net Operating Losses.  The Buyer, the Companies and
                ---------------------------------                               
the Company Subsidiaries shall make any and all elections under Section
172(b)(3) of the Code and any corresponding provisions of state, local or
foreign law to relinquish the entire carryback period with respect to any net
operating loss attributable to the Companies or the Company Subsidiaries in any
taxable period beginning after the Closing Date that could be carried back to a
taxable year of the Companies or the Company Subsidiaries ending on or before
the Closing Date.

          7.12  Survival.  Claims for indemnification under Section 7.1 shall
                --------                                                     
survive until the expiration of the applicable statute of the limitations
(including any extensions or waivers of such statutes).

          Article 8.  Employee Benefit and Labor Matters.
                      ---------------------------------- 

          8.1  Continuation of Employee Benefits.  From and after the Closing
               ---------------------------------                             
Date and except as otherwise expressly provided in this Article 8, the Buyer
shall, and shall cause the Companies and Company Subsidiaries to:

 
                                                                              44

          (a)  Provide, until three years after the Closing Date (the "Benefit
     Continuation Period"), benefits that in the aggregate are no less favorable
     than the benefits provided, in the aggregate, under the Employee Benefit
     Plans to the current employees of the Frontier LEC Business (the "Business
     Employees") immediately prior to the Closing.  For purposes of this
     Agreement, "Business Employees" shall refer only to those individuals who
     are actively employed by the Frontier LEC Business on the Closing Date, or
     who are on vacation, disability, family leave, layoff or other leaves of
     absence which have been agreed or consented to (or protected by applicable
     law) on such Closing Date and who in any case where they are not actively
     employed on the Closing Date actually return to active service with the
     Surviving Corporation of the Buyer within 12 months (or such longer period
     protected by applicable law) after the Closing Date.  Not in limitation of
     the foregoing but for clarification, during the Benefit Continuation Period
     the Buyer shall, or shall cause the Companies and Company Subsidiaries, to
     maintain a severance program that provides payments and benefits to
     Business Employees whose employment terminates during such period that are
     not less than the payments and benefits provided for under the Change in
     Control Severance Plan for Salary Band Levels 25 and above, as maintained
     by GCNA (the "Severance Plan") (assuming, for purposes of such plan, that a
                   --------------                                               
     change of control has already occurred) for the same type of termination.
     Notwithstanding the foregoing, nothing herein shall require (i) the
     continuation of any particular employee benefit plan or contribution levels
     or prevent any amendment or termination thereof (subject to the
     maintenance, in the aggregate, of the benefits as provided in the preceding
     sentence) or (ii) require the Buyer to continue or maintain any stock
     purchase or other equity plan related to the equity of Global or the Buyer.
     Notwithstanding the foregoing, until September 29, 2001, the Buyer shall,
     or shall cause the Company and the Company Subsidiaries to, maintain
     benefits that are equivalent to the benefits provided under the Employee
     Telecommunications Benefit program, the Educational Assistance Fund, the
     Educational Assistance Program and the Executive Perquisite program;
     provided, however, that Sellers shall assume or retain all liabilities with
     --------  -------                                                          
     respect to benefits accrued or payable under the foregoing four programs to
     the extent incurred as of the Closing Date (which for purposes of the
     Educational Assistance Fund shall mean that any four-year scholarship
     awarded prior to the Closing Date shall be deemed incurred with respect to
     all four years of such scholarship so long as the student remains eligible
     for such scholarship under the terms of such Fund).  In the event of any
     sale, transfer or other disposition by the Buyer of all or any part of the
     Frontier LEC Business or of the Companies and/or the Company Subsidiaries
     (whether by merger, sale of stock or assets or otherwise) (any such event,
     a "Sale") prior to the end of the Benefit Continuation Period, the Buyer
     shall cause any such purchaser to assume and perform all obligations of the
     Buyer under this Section 8.1(a) for not less than the balance of the
     Benefit Continuation Period.

          (b)  (i) Waive any limitations to pre-existing conditions, exclusions
     and waiting periods with respect to participation and coverage requirements
     applicable to the Business Employees under any welfare benefit plan in
     which such employees may be eligible to participate after the Closing to
     the extent that such limitations did not apply or had been 

 
                                                                              45

     satisfied by such Business Employees and their covered dependents, (ii)
     provide each Business Employee with credit for any co-payments and
     deductibles paid prior to the Closing for the year in which the Closing
     occurs in satisfying any applicable deductible or out-of- pocket
     requirements under any welfare benefit plan in which such employees may be
     eligible to participate after the Closing, and (iii) recognize all service
     of the Business Employees rendered as employees of the Sellers, and during
     the period that the Companies and the Company Subsidiaries were
     Subsidiaries of the Sellers, for all purposes (including, without
     limitation, purposes of eligibility to participate, vesting credit,
     entitlement for benefits, and benefit accrual (except for purposes of
     benefit accrual under any defined benefit cash balance pension plan) in any
     benefit plan in which such employees may be eligible to participate after
     the Closing, to the same extent taken into account under a comparable
     Employee Benefit Plan immediately prior to the Closing Date.

          8.2  Termination of Participation in Employee Benefit Plans; Defined
               ---------------------------------------------------------------
Benefit Pension Plans.  Except as set forth herein, the Buyer shall not, and
---------------------                                                       
shall cause the Companies and Company Subsidiaries not to, assume any Employee
Benefit Plans maintained or sponsored by the Sellers.  Effective as of the
Closing Date, the Business Employees shall cease to participate in any of the
Employee Benefit Plans maintained or sponsored by the Sellers, and the Companies
and Company Subsidiaries shall cease to be contributing employers under any
Employee Benefit Plan.  In addition, with respect to any Employee Benefit Plan
that is a defined benefit pension plan (collectively, the "Sellers' Pension
                                                           ----------------
Plans"), the Sellers shall not transfer any assets or liabilities with respect
-----                                                                         
to any Business Employees who participated in any such plans immediately prior
to the Closing Date; provided, however, that the Sellers shall cause the
                     --------  -------                                  
applicable Sellers' Pension Plans to recognize all service provided by the
Business Employees after the Closing Date to the Buyer, the Companies and the
Company Subsidiaries (collectively, the "Buyer Group") for purposes of
                                         -----------                  
eligibility for the commencement of benefits thereunder; and provided, further,
                                                             --------  ------- 
in connection with the foregoing, (i) Buyer shall, or shall cause the applicable
member of the Buyer Group, to provide the Sellers with written notice of the
termination of employment occurring after the Closing Date of any Business
Employee who participated in the Sellers' Pension Plan prior to the Closing Date
(a "Termination Notice") and (ii) in the event of any Sale whereby the Business
    ------------------                                                         
Employees are transferred from Buyer or otherwise outside of the Buyer Group,
(x) Buyer shall, or shall cause the applicable member of the Buyer Group to
continue to provide such Termination Notice even after such Sale or (y) Buyer
shall cause the acquiring entity to agree to provide such Termination Notice
after such Sale.

          8.3  Defined Contribution Plan.  (a) As soon as reasonably practicable
               -------------------------                                        
after the Closing Date, the Buyer shall, or shall cause the Buyer Group to,
provide a defined contribution plan for the benefit of the Business Employees
(which plan may be an existing plan or plans of the Buyer) (the "Successor
401(k) Plan"), that has those features that are provided for in the Sellers'
401(k) Plan, which are required by Section 411(d)(6) of the Code to be provided
by the Successor 401(k) Plan (the "Protected Benefits").  In addition, the Buyer
shall, or shall cause the Buyer Group to, take all necessary actions, if any, to
qualify such plan under the applicable provisions of the Code and shall make any
and all filings and submissions to the appropriate governmental agencies
required to be made by it in connection with the transfer of assets described
below.  As soon as reasonably practicable following the delivery to the Sellers
of a 

 
                                                                              46

favorable determination letter from the Internal Revenue Service regarding the
qualified status of the Successor 401(k) Plan (or, if earlier, the delivery of
an opinion of the Buyer's counsel, reasonably satisfactory to the Sellers, to
such effect), the Sellers shall cause the trustee of the Sellers' 401(k) Plan to
transfer, in the form of cash and marketable securities (or such other form as
may be agreed by the Buyer and the Sellers) (the "Assets"), the full account
balances of the Business Employees (which account balances shall be fully
vested) under the Sellers' 401(k) Plan (which account balances will have been
credited with appropriate earnings attributable to the period from the Closing
Date to the date of transfer described herein), reduced by any necessary benefit
or withdrawal payments to or in respect of Business Employees occurring during
the period from the Closing Date to the date of transfer described herein, to
the appropriate trustee as designated by the Buyer under the trust agreement
forming a part of the Successor 401(k) Plan. With respect to that portion of the
Assets that is comprised of shares of capital stock of Global ("Global Stock"),
Buyer shall cause the trustee of the Successor 401(k) Plan to hold such shares
in trust for the benefit of the Business Employees until such time as any such
employee elects to dispose of his or her shares; and provided, further, that in
no event shall the Successor 401(k) Plan be required to permit participants to
otherwise invest in Global Stock, whether with additional contributions made
into such plan, reallocation of other Assets of a participant's account, or
otherwise. In consideration for the transfer of assets described herein, the
Buyer shall, or shall cause the Buyer Group to, effective as of the date of
transfer described herein, assume all of the obligations of the Sellers in
respect of the account balances accumulated by Business Employees under the
Sellers' 401(k) Plans on or after the Closing Date.

     (b)  Notwithstanding anything provided in Section 8.3(a) to the
contrary, in the event that the provision of the Protected Benefits would impose
upon the Buyer or the Buyer Group material costs and expenses of administration
that the parties reasonably agree would impose an unreasonable and substantial
burden on the Buyer (or the Buyer Group, as applicable), the trustee of the
Successor 401(k) Plan shall not be required to accept the transfer of account
balances from the Sellers' 401(k) Plan pursuant to Section 8.3(a); provided,
                                                                   -------- 
however, the parties agree that it would constitute an unreasonable and
-------                                                                
substantial burden on Buyer or the Buyer Group if the Buyer were required,
solely for the purposes of accepting the trustee-to-trustee transfer of Assets
(pursuant to Section 8.3(a), above), to establish a new and separate defined
contribution plan.  In lieu of such trustee-to-trustee transfer, the Sellers
shall take any actions reasonably necessary to provide for a distribution to the
Business Employees of their vested account balances pursuant to Section
401(k)(10) of the Code, to the extent that such employees elect to receive such
distributions, and the Buyer shall, or shall cause the Buyer Group to, take any
actions reasonably necessary to cause the Successor 401(k) Plan to receive any
such distributions (in cash and in shares of Global Stock, as applicable) which
any such Business Employee may elect to roll over into such 401(k) plan.  In
addition, in the event any such Business Employee elects to roll over his or her
vested account balances into the Successor 401(k) Plan, the Buyer shall take all
actions necessary to permit such Business Employee to roll over any loan balance
outstanding under the Sellers 401(k) Plan prior to the Closing Date, to the
extent permitted by applicable Law.

     (c)  Notwithstanding anything in this Agreement to the contrary, in no
event shall the Sellers transfer, or cause to be transferred, the assets, if
any, of, or liabilities with respect to the 

 
                                                                              47

Business Employees under, either the Supplemental Management Pension Plan or the
Supplemental Retirement Savings Plan.

          8.4  Post-Retirement Benefits.  (a)  Sellers shall retain or assume
               ------------------------                                      
the liability for all post-retirement medical and/or life insurance benefits
(the "Post Retirement Welfare Benefits") for (i) any former employee of the
Frontier LEC Business who, as of the Closing Date, was either retired or
otherwise terminated employment with the Sellers prior to the Closing Date and
was entitled to Post-Retirement Welfare Benefits from the Sellers at such time,
or (ii) is a non-Union Employee, whether or not eligible for post-retirement
welfare benefits as of the Closing Date (even if they continue their employment
with the Buyer or the Buyer Group after the Closing Date); provided, however,
                                                           --------  ------- 
that the foregoing benefits shall be secondary to any medical or life insurance
benefit coverage that such a person described in clauses (i) or (ii), above may
otherwise be eligible to receive under any plan, program or arrangement provided
by the Buyer or any member of the Buyer Group or pursuant to any Assumed CBAs.

          (b)  With respect to any Business Employee who is a Union Employee as
of the Closing Date, the Buyer shall assume all liabilities, obligations and
responsibilities with respect to providing Post-Retirement Welfare Benefits, if
any, to such employees under any Assumed CBAs or any Post-Retirement Welfare
Benefits programs which the Buyer or the Buyer Group maintain for such employees
after the Closing Date.

          (c)  As soon as practicable on or after the Closing Date, the Sellers
shall transfer any assets that are dedicated or otherwise allocated exclusively
for the purpose of funding and determining the accrued liability with respect to
the Post-Retirement Welfare Benefits of the Union Employees assumed by the Buyer
pursuant to Section 8.4(b), above.  To the extent such transfer occurs after the
Closing Date, the amount of the transfer shall equal the assets as of the
Closing Date plus the interest on such assets accrued from the Closing Date to
             ----                                                             
the date the assets are transferred hereunder, at a rate equal to the assumed
discount rate used to value the foregoing liability as of the Closing Date (as
set forth in the Buck Consulting Report), adjusted by any contributions made by,
                                          -------- --                           
or payments made to, the Union Employees in respect of the Post-Retirement
Welfare Benefits prior to the date the foregoing assets are transferred.

          8.5  Collective Bargaining Agreements.  Effective on and after the
               --------------------------------                             
Closing Date, the Buyer shall assume all of the collective bargaining agreements
(including, without limitation, pursuant to the specified provisions of the
collective bargaining agreements set forth in Section 8.5 of the Disclosure
Schedule) (all such agreements, the "Assumed CBAs") and other labor contracts
with respect to any Business Employees existing immediately prior to the Closing
Date (including, without limitation, the obligation, if any, to contribute to
any multiemployer pension or welfare plans) and to continue, to the extent
required under such agreements and other contracts, to employ all of the
Business Employees covered by such agreements, whether or not then actively at
work, including, without limitation, any Business Employees who are on vacation
leave, leave of absence, sick leave or disability leave for the periods set
forth therein.  The Buyer shall also honor any reemployment rights of any
current or former Business Employees including, but not limited to, any such
persons who are receiving long-term disability benefits as of the Closing Date.

 
                                                                              48


          8.6  WARN.  On and for 90 days after the Closing Date, the Buyer shall
               ----                                                             
not, and shall cause the Companies and Company Subsidiaries not to, implement
any employment terminations, layoffs or hours reductions or take any other
action which could result in a "plant closing" or "mass layoff", as those terms
are defined in the Worker Adjustment and Retraining Notification Act of 1988
("WARN") or similar events under applicable state law, affecting in whole or in
part any facility, site of employment or operating unit, or any employee
employed by any Company or Company Subsidiary, or which could require either
Seller, any Company or Company Subsidiary or the Buyer to give notice or take
any other action required by WARN or applicable state law.

          8.7  Annual Incentive Compensation.  On the Closing Date, the Sellers
               -----------------------------                                   
shall pay, or cause to be paid, to all Business Employees a pro rata portion of
any bonuses otherwise payable in respect of the fiscal year in which the Closing
Date occurs (the "Bonuses") pursuant to the Sellers' annual incentive
compensation plans.  The amount of such Bonuses shall be calculated based on the
amounts accrued in respect of such Bonuses on the books and records of the
Frontier LEC Business as of the end of the month immediately preceding the month
in which the Closing Date occurs, which Bonuses would otherwise be payable after
the end of the applicable fiscal year.


          Article 9.  Indemnification.
                      --------------- 

          9.1  Indemnification by the Sellers.  Subject in all respects to the
               ------------------------------                                 
provisions of this Article 8, the Sellers hereby agree jointly and severally to
indemnify and hold harmless the Buyer and its Affiliates, officers, directors,
employees, agents and representatives after the Closing Date from and against
any Claims and Damages incurred by them arising out of or resulting from

          (a)  any breach on the part of the Sellers of (i) any representation
     or warranty made by the Sellers in Article 2 hereof (other than those set
     forth in Section 2.17) or in any certificate delivered pursuant to this
     Agreement or (ii) any covenant or agreement made by the Sellers in this
     Agreement; or

          (b)  any matter on the Probable Liabilities List to the extent that
     the amount of the  expense and/or loss for such matter becomes capable of
     being "reasonably estimated" (within the meaning of such term under GAAP
     and determined on a basis consistent with that used to determine the
     Probable Liabilities List) within 18 months after the Closing Date (a
     "Liability Claim").

          9.2  Indemnification by the Buyer.  Subject in all respects to the
               ----------------------------                                 
provisions of this Article 8, the Buyer hereby agrees, and shall cause the
Companies and Company Subsidiaries, jointly and severally to indemnify and hold
harmless the Sellers and their respective Affiliates, officers, directors,
employees, agents and representatives after the Closing Date from and against
any Claims and Damages incurred by them arising out of or resulting from

 
                                                                              49

          (a)  any breach on the part of the Buyer of (i) any representation or
     warranty made by the Buyer in Article 3 hereof or in any certificate
     delivered pursuant to this Agreement or (ii) any covenant or agreement made
     by the Buyer in this Agreement; or

          (b)  any obligation or liability reflected in the Combined Liabilities
     or Combined Working Capital used to adjust the Purchase Price pursuant to
     Section 1.3 to the extent so reflected.

          9.3  Limitations on Indemnification Claims and Liability.  (a)  The
               ---------------------------------------------------           
respective representations and warranties of the Sellers and the Buyer set forth
in this Agreement or in any certificate delivered pursuant to this Agreement,
and the opportunity to make a claim for indemnification, or otherwise be
indemnified or held harmless, under this Article 9 with respect thereto or with
respect to (i) any covenant or agreement relating to any action required by this
Agreement to be taken prior to or at the Closing or (ii) any Liability Claim
shall survive until, and expire with, and be terminated and extinguished upon,
the date that is 18 months after the Closing Date.  Any and all covenants and
agreements relating to any action required by this Agreement to be taken after
the Closing and the obligation of the Buyer with respect to Section 9.2(b) shall
survive the Closing forever and shall not expire with, and be terminated and
extinguished upon, the Closing.

          (b)  The Sellers shall not be obligated to indemnify or hold harmless
any Indemnified Party under Section 9.1 (i) for any Claims or Damages incurred
by such Indemnified Party in connection with any individual occurrence or
related series of occurrences that do not exceed $25,000 or (ii) unless and
until Claims or Damages in respect of the indemnification obligations of the
Sellers under Section 9.1 exceed in the aggregate $50,000,000, following which
(subject to the provisions of this Article 9) the Sellers shall be obligated to
indemnify or hold harmless an Indemnified Party only for such Claims or Damages
which, when aggregated with all other Claims and Damages indemnified under
Section 9.1, exceed such threshold amount or (iii) to the extent that Claims or
Damages, when aggregated with all other Claims and Damages indemnified under
Section 9.1, exceed $200,000,000 or (iv) for any matter reflected in the
Combined Liabilities or Combined Working Capital to the extent used to adjust
the Purchase Price pursuant to Section 1.3.  For purposes of this Section
9.3(b), the amount of any Claims and Damages shall be computed as set forth in
Section 9.4.

          (c)  In addition to the foregoing limitations and any other
limitations under this Agreement, the Sellers shall not be obligated to
indemnify or hold harmless any Indemnified Party under Section 9.1(b) unless and
until Claims or Damages in respect of Liability Claims exceed in the aggregate
the aggregate amount of all matters on the Probable Assets List for which the
asset values of such matters have become capable of being "reasonably estimated"
(within the meaning of such term under GAAP and determined on a basis consistent
with that used to determine the Probable Assets Lists) within 18 months after
the Closing Date. To the extent that any matter or any additional matter on the
Probable Asset List becomes so capable of being "reasonably estimated" after an
indemnification payment has been made with respect to a Liability Claim, the
Buyer or its Affiliate shall promptly repay to the GCNA such amount of the
indemnification payment as would not have been paid had the asset value of such
matter reduced the original 

 
                                                                              50

payment (and any such repayment shall be a credit against any applicable
indemnification threshold or limitation set forth in Section 9.3(b) hereof) at
such time or times and to the extent such matters become so estimable.

          (d)  Notwithstanding anything to the contrary in this Agreement, the
indemnifications in Sections 9.1 and 9.2 hereof will be the sole and exclusive
remedies available to the Buyer or the Sellers, or any of their respective
Affiliates, officers, directors, employees, agents or representatives, after the
Closing for breaches of any representations or warranties in this Agreement, or
any certificate delivered pursuant to this Agreement, or any covenants or
agreements contained in this Agreement (other than with respect to any covenant
or agreement relating to any action required by this Agreement to be taken after
the Closing or to obligations or liabilities reflected in Combined Liabilities
or Combined Working Capital), or otherwise in connection with this Agreement
(other than as provided by Articles 1, 7 and 8).  Any claim for indemnification
must be made as provided in Sections 9.5, 9.6 and 9.7 hereof.

          9.4  Computation of Claims and Damages.  Whenever an Indemnifying
               ---------------------------------                           
Party is required to indemnify and hold harmless an Indemnified Party from and
against and hold the Indemnified Party harmless from, or to reimburse the
Indemnified Party for, any item of Claim or Damage under this Agreement, the
Indemnifying Party will, subject to the provisions of this Article 9, pay the
Indemnified Party the amount of the Claim or Damage (i) reduced by any amounts
to which the Indemnified Party actually recovers from third parties in
connection with such Claim or Damage ("Reimbursements"), (ii) reduced by the Net
Proceeds of any insurance policy payable to the Indemnified Party with respect
to such Claim or Damage and (iii) reduced appropriately to take into account any
Tax Benefit to the Indemnified Party with respect to such Claim or Damage, net
of all income Taxes resulting from the indemnification payment.  For purposes of
this Section 9.4, (x) "Net Proceeds" shall mean the insurance proceeds actually
paid, less any deductibles, co-payments, premium increases, retroactive premiums
or other payment obligations (including attorneys' fees and other costs of
collection) that relates to or arises from the making of the claim for
indemnification and (y) "Tax Benefit" shall mean any benefit actually realized
by the Indemnified Party in connection with the Claim or Damage.  The
Indemnified Party shall use reasonable best efforts to pursue Reimbursements or
Net Proceeds that may reduce or eliminate Claims and Damages and otherwise to
mitigate Claims and Damages.  If any Indemnified Party receives any
Reimbursement or Net Proceeds, or realizes a Tax Benefit, after an
indemnification payment is made which relates thereto, the Indemnified Party
shall promptly repay to the Indemnifying Party such amount of the
indemnification payment as would not have been paid had the Reimbursement, Net
Proceeds or Tax Benefit reduced the original payment (and any such repayment
shall be a credit against any applicable indemnification threshold or limitation
set forth in Section 9.3(b) hereof) at such time or times as and to the extent
that such Reimbursement or Net Proceeds is actually received or such Tax Benefit
is actually realized.  The Indemnified Party shall make available to the
Indemnifying Party and its agents and representatives all pertinent records,
materials and information, and provide reasonable access during normal business
hours to the Indemnified Party's employees, properties, books and records, and
shall otherwise cooperate with and assist the Indemnifying Party and its agents
and representatives in reviewing the propriety and the amount of any Claims or
Damages, including, 

 
                                                                              51

without limitation, the availability and/or amounts of Reimbursements, Net
Proceeds and Tax Benefits.

          9.5  Notice of Claims.  Upon obtaining actual knowledge of any Claim
               ----------------                                               
or Damage which has given rise to, or could reasonably give rise to, a claim for
indemnification hereunder, the party seeking indemnification (the "Indemnified
Party") shall, as promptly as reasonably practicable (but in no event later than
30 days) following the date the Indemnified Party has obtained such knowledge,
give written notice (a "Notice of Claim") of such claim to the  party or parties
from which indemnification is or will be sought under this Article 9 (the
"Indemnifying Party").  The Indemnified Party shall furnish to the Indemnifying
Party in good faith and in reasonable detail such information as the Indemnified
Party may have with respect to such indemnification claim (including copies of
any summons, complaint or other pleading which may have been served on it and
any written claim, demand, invoice, billing or other document evidencing or
asserting the same).  No failure or delay by the Indemnified Party in the
performance of the foregoing shall reduce or otherwise affect the obligation of
the Indemnifying Party to indemnify and hold the Indemnified Party harmless,
except to the extent that such failure or delay shall have materially adversely
affected the Indemnifying Party's ability to defend against, settle or satisfy
any liability, damage, loss, claim or demand for which such Indemnified Party is
entitled to indemnification hereunder.  For purposes of this Section 9.5, (i) a
Notice of Claim given in good faith must include to the extent then practicable
a good faith estimate of the amount of the claim and (ii) a Notice of Claim
shall be deemed to have been given as of the date the Probable Liabilities List
is agreed upon or otherwise determined with respect to Liability Claims.
Notwithstanding anything to the contrary in this Agreement, no identification of
any party as an "Indemnifying Party" for purposes of any of the provisions of
this Agreement shall constitute any acknowledgment by such party that it is
liable to any Person under this Article 9.

          9.6  Defense of Third Party Claims.  If any claim set forth in the
               -----------------------------                                
Notice of Claim given by an Indemnified Party pursuant to Section 9.5 hereof is
a claim asserted by a third party, the Indemnifying Party shall have 30 days
after the date that the Notice of Claim is given or deemed given by the
Indemnified Party to notify the Indemnified Party in writing of the Indemnifying
Party's election to defend such third party claim on behalf of the Indemnified
Party.  If the Indemnifying Party elects to defend such third party claim, the
Indemnified Party shall make available to the Indemnifying Party and its agents
and representatives all witnesses, pertinent records, materials and information
in the Indemnified Party's possession or under the Indemnified Party's control
as is reasonably required by the Indemnifying Party and shall otherwise
cooperate with and assist the Indemnifying Party in the defense of such third
party claim.  Regardless of which party is defending such third party claim, the
Indemnified Party shall not pay, settle or compromise such third party claim
without the consent of the Indemnifying Party.  If the Indemnifying Party elects
to defend such third party claim, the Indemnified Party shall have the right to
participate in the defense of such third party claim, at the Indemnified Party's
own expense.  In the event, however, that the Indemnified Party reasonably
determines that representation by counsel to the Indemnifying Party of both the
Indemnifying Party and the Indemnified Party may present such counsel with a
conflict of interest, then such Indemnified Party may employ separate counsel to
represent or defend it in any such action or proceeding and the Indemnifying
Party will, subject to the provisions of this Article 9, pay the reasonable fees
and 

 
                                                                              52

disbursements of such counsel when due under such counsel's customary billing
practices. If the Indemnifying Party does not elect to defend such third party
claim or does not defend such third party claim in good faith, the Indemnified
Party shall have the right, in addition to any other right or remedy it may have
hereunder, at the Indemnifying Party's expense, to defend such third party
claim; provided, however, that such Indemnified Party's defense of or its
participation in the defense of any such third party claim shall not in any way
diminish or lessen the indemnification obligations of the Indemnifying Party
under this Article 9. If the Indemnifying Party subsequently reasonably
determines that the Indemnified Party is not defending such third party claim in
good faith, the Indemnifying Party shall have the right, in addition to any
other right or remedy it may have hereunder, to elect to assume the defense of
such third party claim and, to the extent that the Indemnified Party has not
defended such third party claim in good faith, and whether or not the
Indemnifying Party shall have subsequently assumed the defense thereof, the
indemnification obligations of the Indemnifying Party under this Article 9 shall
be reduced or eliminated to the extent that such failure to defend in good faith
shall have materially adversely affected the Indemnifying Party's ability to
defend against, settle or satisfy any liability, damage, loss, claim or demand
for which such Indemnified Party is otherwise entitled to indemnification
hereunder.

          9.7  Special Indemnification Procedures with Respect to Environmental
               ----------------------------------------------------------------
Matters.  (a)  Notwithstanding anything to the contrary in this Agreement, with
-------                                                                        
respect to any potential claim for indemnification in connection with, arising
out of or resulting from any breach on the part of the Sellers of (i) any
representation or warranty made by the Sellers in Section 2.13 hereof, or in any
other section of this Agreement or in any certificate delivered pursuant to this
Agreement relating to matters relating to Environmental Laws or Hazardous
Materials, (ii) any covenant or agreement made by the Sellers in this Agreement
relating to matters relating to Environmental Laws or Hazardous Materials or
(iii) any Liability Claim relating to matters relating to Environmental Laws or
Hazardous Materials, which claim relates to the costs of remediation of
environmental conditions (each, a "Remediation Claim"), the Notice of Claim
given to the Sellers pursuant to Section 9.5 hereof shall be required to set
forth the condition requiring such remediation, the proposed remedial actions
(including the scope of work to be performed) (each, a "Remediation Action") and
an estimate of the cost of such remediation.  The Sellers shall be given the
right to consult with the Buyer of the Remediation Action covered under this
Section 9.7. The Indemnified Party shall consult in good faith with the Sellers
and their representatives with respect to all aspects of the proposed
Remediation Claim specified in the Notice of Claim, including, without
limitation, the form and substance of any communications plan, report or
submission to be given to any Governmental Authority with respect to any
Remediation Action.  The costs of any environmental surveys or testing, geologic
testing or engineering tests conducted in connection with any potential or
proposed Environmental Claim (other than those required by a Governmental
Authority in connection with an identified potential or proposed Environmental
Claim), including laboratory and analytical fees, or any consultants or
engineers engaged to assist in any review related thereto, shall be paid for by
the party conducting such surveys, testing or tests or engaging such consultants
or engineers.

          (b)  With respect to any Remediation Actions in excess of $500,000 in
the aggregate, the Indemnified Party shall, to the fullest extent practicable,
seek in good faith competitive written bids from at least three qualified
sources prior to having any of such 

 
                                                                              53

Remediation Actions performed. To the extent that any Indemnified Party will be
seeking indemnification under the provisions of this Article 9, with respect to
a Remediation Action, indemnification with respect to such Remediation Action
shall be limited to that required to comply with Environmental Laws and the
Indemnified Party shall use its reasonable best efforts to minimize the amount
of any Remediation Claim in connection therewith.

          (c)  The procedures specified in Sections 9.7(a) and 9.7(b) above are
provided solely for the purpose of determining the amount of the indemnification
to which an Indemnified Party is entitled under Section 9.1 hereof with respect
to a Remediation Claim.  Nothing herein shall be construed to restrict or limit
in any way the remedial actions actually undertaken or costs of remediation
actually incurred with respect thereto.

          9.8  Probable Liabilities and Assets Lists.  (a)  Pursuant to the
               -------------------------------------                       
procedures and in accordance with the time schedules set forth in Section 1.4,
the parties shall agree upon (or in the case of a Neutral Auditor Determination,
there shall be determined for the parties pursuant to Section 1.4) a list (the
"Probable Liabilities List") of matters (the "Probable Liabilities") that both
(i) with respect to which, as of the Closing Date, it is "probable" (within the
meaning of such term under GAAP consistently applied and on a basis consistent
with the basis used in preparing the financial data and information described in
clauses (ii) and (iii) of Section 2.6(a) and as set forth in Schedule 1.3
hereto) that a liability has been incurred and (ii) would have been reflected in
the Combined Liabilities for purposes of determining the Liabilities Adjustment
or in Combined Working Capital for purposes of determining the Working Capital
Adjustment, in each case pursuant to Section 1.3(a) in conformity with GAAP
(including, without limitation, the materiality concepts thereof) consistently
applied and on a basis consistent with the basis used in preparing the financial
data and information described in clauses (ii) and (iii) of Section 2.6(a) and
as set forth in Schedule 1.3 hereto, but for the fact that, as of the Closing
Date, the amount of the  expense and/or loss for such matter cannot be
"reasonably estimated" (within the meaning of such term under GAAP).

          (b)  Pursuant to the procedures and in accordance with the time
schedules set forth in Section 1.4, the parties shall agree upon (or in the case
of a Neutral Auditor Determination, there shall be determined for the parties
pursuant to Section 1.4) a list (the "Probable Assets List") of matters (the
"Probable Assets") that both (i) with respect to which, as of the Closing Date,
it is "probable" (within the meaning of such term under GAAP consistently
applied and on a basis consistent with the basis used in preparing the financial
data and information described in clauses (ii) and (iii) of Section 2.6(a) and
as set forth in Schedule 1.3 hereto) that a current or long-term receivable of
the Companies or Company Subsidiaries exists and (ii) would have been reflected
in the books and records of the Frontier LEC in conformity with GAAP (including,
without limitation, the materiality concepts thereof) consistently applied and
on the basis consistent with the basis used in preparing the financial data and
information described in clauses (ii) and (iii) of section 2.6(a) and as set
forth in Schedule 1.3 hereto, but for the fact that, as of the Closing Date, the
value of such asset cannot be "reasonably estimated" (within the meaning of such
term under GAAP).

 
                                                                              54

          Article 10.  Definitions.
                       ----------- 

          Unless otherwise stated in this Agreement, the following capitalized
terms have the following meanings:

          Access Line means a physical circuit over which calls are switched in
          -----------                                                          
     the telephone central offices, and over which calls can be directed to
     other Access Lines on the Public Switched Network or received from other
     Access Lines connected to the Public Switched Network.  In counting the
     number of Access Lines, (i) each digital T1 circuit (which can be
     channelized into 24 separate voice-grade equivalent lines) is counted as 24
     Access Lines by the Companies and Company Subsidiaries in Rochester, New
     York; Illinois; Michigan; and Wisconsin, (ii) each PRI circuit (a T1
     circuit used to provision ISDN service) is counted as 23 Access Lines,
     (iii) both retail and wholesale market segments are included in the Access
     Line counts in the Rochester, New York market and (v) telephone lines used
     for internal business purposes ("official" lines) are excluded from Access
     Line counts.

          Action means any action, suit, claim, arbitration, or proceeding or
          ------                                                             
     investigation (of which the Sellers or the Buyer, as the case may be, have
     knowledge) commenced by or pending before any Governmental Authority.

          Adjustment has the meaning set forth in Section 1.4 hereof.
          ----------                                                 

          Affiliate means, with respect to any specified Person, any other
          ---------                                                       
     Person that directly, or indirectly through one or more intermediaries,
     controls, is controlled by, or is under common control with such specified
     Person.

          Agreement or this Agreement means this Purchase Agreement dated as of
          ---------    --------------                                          
     the date first above written (including the Annexes and Exhibits hereto and
     the Disclosure Schedule) and all amendments hereto made in accordance with
     the provisions of Section 11.7 hereof.

          Asset Purchase Agreement has the meaning set forth in Section 2.21
          ------------------------                                          
     hereof.

          Buck Consulting Report means the report dated March 23, 2000 by Buck
          ----------------------                                              
     Consulting relating to the January 1, 1999 valuation of the post-retirement
     non-pension benefits of Global Crossing Telecommunications.

          Business Day means any day that is not a Saturday, a Sunday or other
          ------------                                                        
     day on which banks are required or authorized by law to be closed in the
     City of New York.

          Business Employee has the meaning set forth in Section 8.1 hereof.
          -----------------                                                 

          Buyer has the meaning specified in the introductory paragraph to this
          -----                                                                
     Agreement.

 
                                                                              55

          Buyer Material Adverse Effect means a material adverse effect on the
          -----------------------------                                       
     business, results of operations or financial condition of the Buyer and its
     Subsidiaries (not including the Companies and the Company Subsidiaries),
     taken as a whole; provided that, for such purpose, "material adverse
     effect" shall be determined on the basis of the same magnitude of effect as
     that used to determine a Material Adverse Effect.

          Buyer Group has the meaning set forth in Section 8.2 hereof.
          -----------                                                 

          Capital Expenditure Cash Fund has the meaning set forth in Section
          -----------------------------                                     
     4.13 hereof.

          Carrier Services Agreement has the meaning set forth in Section 2.21
          --------------------------                                          
     hereof.

          CERCLA means the Comprehensive Environmental Response, Compensation,
          ------                                                              
     and Liability Act of 1980.

          Claims and Damages means, except as otherwise expressly provided in
          ------------------                                                 
     this Agreement, any and all losses, claims, demands, liabilities,
     obligations, actions, suits, orders, statutory or regulatory compliance
     requirements, or proceedings asserted by any Person (including, without
     limitation, Governmental Authorities), and all damages, costs, expenses,
     assessments, judgments, recoveries and deficiencies, including, to the
     extent required pursuant to Article 8, reasonable attorneys' fees and
     costs, incurred by or awarded against a party to the extent indemnified in
     accordance with Article 8 hereof, but shall not include any consequential,
     special, multiple, punitive or exemplary damages, except to the extent such
     damages have been recovered by a third party and are the subject of a third
     party claim for which indemnification is available under the express terms
     of Article 8 hereof.

          Closing has the meaning set forth in Section 1.6 hereof.
          -------                                                 

          Closing Cash Payment has the meaning set forth in Section 1.3 hereof.
          --------------------                                                 

          Closing Date has the meaning set forth in Section 1.6 hereof.
          ------------                                                 

          Closing Statement has the meaning set forth in Section 1.4 hereof.
          -----------------                                                 

          Code means the Internal Revenue Code of 1986, as amended.
          ----                                                     

          Combined Liabilities means all long-term liabilities (which does not
          --------------------                                                
     include contra asset accounts including, but not limited to, accumulated
     deprecation or allowance for uncollectible accounts) properly recorded on a
     combined balance sheet for the Company and the Company Subsidiaries
     excluding the following:  (i) deferred taxes to the extent they reflect
     timing differences, (ii) deferred investment tax credits, (iii) minority
     interests (to the extent they are non-cash in nature and permitted under
     this Agreement), (iv) deferred revenues, (v) any amount included in the
     definition of "Working Capital," (vi) all accrued employee benefit or
     pension obligations (A) with respect to which assets will be 

 
                                                                              56

     transferred to the Buyer or Buyer Group, or obligations are assumed by the
     Sellers, pursuant to Article 8 or (B) which have been established by or at
     the direction of the Buyer, (vii) liabilities created from or in connection
     with the obtaining of any Required Consents or other consents or approvals
     for the Sale from third parties or under Regulatory Law (provided that one-
     half of any liabilities accrued as of the date of the combined balance
     sheet in conformity with GAAP consistently applied that were created from
     or in connection with the obtaining of Required Consents from PUCs (other
     than where the Companies or Company Subsidiary receive a corresponding
     asset) shall be included in Combined Liabilities up to a maximum, when
     aggregated together with any current liabilities created from or in
     connection with the obtaining of such Required Consents from PUCs included
     in the calculation of Combined Working Capital, of $15,000,000), (viii) any
     other "non-cash" liabilities, (ix) Taxes to the extent they are subject to
     Article 7 and (x) all intercompany liabilities (other than those that are
     not canceled pursuant to Section 4.13(a)), all of the foregoing as
     determined on a combined basis for the Companies or Company Subsidiaries in
     conformity with GAAP consistently applied and on a basis consistent with
     the basis used in preparing the financial data and information described in
     clauses (ii) and (iii) of Section 2.6(a) or as expressly required in this
     definition. For purposes of determining Combined Liabilities, the liability
     attributable to the long-term portion of the Post-Retirement Welfare
     Benefits of Union Employees shall be calculated using the same actuarial
     assumptions that were used to determine the financial statement disclosures
     as of December 31, 1999 in the Buck Consulting Report. To the extent that,
     due to tax timing differences, any Tax deduction relating to any liability
     included in Combined Liabilities will not be available in a Pre-Closing Tax
     Period, Combined Liabilities shall be reduced appropriately to take into
     account any Tax Benefit (as defined in Section 9.4) actually realized at or
     prior to the time of calculation of the Adjustment to the Buyer with
     respect to such liability; and if the Buyer actually realizes a Tax Benefit
     after the Adjustment has been determined, the Buyer shall promptly pay to
     GCNA such additional amount as would have been paid as Purchase Price had
     the Tax Benefit reduced the original calculation of Combined Liabilities,
     at such time or times as and to the extent that such Tax Benefit is
     actually realized.

          Combined Working Capital means, without duplication, the aggregate of
          ------------------------                                             
     (i) all cash and cash equivalents (other than the Capital Expenditure Cash
     Fund), accounts receivables and other receivables (less the reserve for
     uncollectible accounts), prepaid expenses (including prepaid Taxes),
     security deposits, inventories, supplies, any other current assets and
     deferred income Taxes recorded as a current asset (but excluding any
     intercompany accounts) less (ii) all accounts payable, accrued expenses and
     current liabilities, other accruals, salaries, bonuses and commissions
     payable, the current portion of long-term Indebtedness and deferred income
     Taxes recorded as a current liability (but  excluding (1) any intercompany
     accounts (other than intercompany payables that are not canceled pursuant
     to Section 4.13(a)), (2) all accrued employee benefit obligations (A) with
     respect to which assets will be transferred to the Buyer or Buyer Group, or
     obligations are assumed by the Sellers, pursuant to Article 8 or (B) which
     have been established by or at the direction of the Buyer, (3) Taxes to the
     extent they are subject to Article 7 and (4) liabilities created from or in
     connection with the obtaining of any 

 
                                                                              57

     Required Consent or other consents or approvals for the Sale of third
     parties or under any Regulatory Law (provided that one-half of any current
     liabilities accrued as of the date of the combined balance sheet in
     conformity with GAAP consistently applied that were created from or in
     connection with the obtaining of Required Consents from PUCs (other than
     where the Companies or Company Subsidiaries receive a corresponding asset)
     shall be included in the calculation of Combined Working Capital up to a
     maximum, when aggregated together with any long-term liabilities created
     from or in connection with the obtaining of such Required Consents from
     PUCs included in the calculation of Combined Liabilities, of $15,000,000)),
     all as determined on a combined basis for the Companies and Company
     Subsidiaries in conformity with GAAP consistently applied and on a basis
     consistent with the basis used in preparing the financial data and
     information described in clauses (ii) and (iii) of Section 2.6(a) or as
     expressly required by this definition. For purposes of determining Combined
     Working Capital, the liability, if any, attributable to the current portion
     of the Post-Retirement Welfare Benefits of Union Employees shall be
     calculated using the same actuarial assumptions that were used in preparing
     the Buck Consulting Report. To the extent that, due to tax timing
     differences, any Tax deduction relating to any liability included in the
     calculation of Combined Working Capital will not be available in a Pre-
     Closing Tax Period, Combined Working Capital shall be increased
     appropriately to take into account any Tax Benefit (as defined in Section
     9.4) actually realized at or prior to the time of calculation of the
     Adjustment to the Buyer with respect to such liability; and if the Buyer
     actually realizes a Tax Benefit after the Adjustment has been determined,
     the Buyer shall promptly pay to GCNA such additional amount as would have
     been paid as Purchase Price had the Tax Benefit increased the original
     calculation of Combined Working Capital, at such time or times as and to
     the extent that such Tax Benefit is actually realized.

          Confidentiality Agreement means the confidentiality agreement dated
          -------------------------                                          
     June 7, 2000 between the Buyer and Global.

          control (including the terms "controlled by" and "under common control
          -------                       -------------       --------------------
     with"), with respect to the relationship between or among two or more
     ----                                                                 
     Persons, means the possession, directly or indirectly, of the power to
     direct or to cause the direction of the affairs or management of a Person,
     whether through the ownership of voting securities, by contract or
     otherwise, including, without limitation, the ownership, directly or
     indirectly, of securities having the power to elect a majority of the board
     of directors or similar body governing the affairs of such Person.

          Debt Adjustment has the meaning set forth in Section 1.3 hereof.
          ---------------                                                 

          Disclosure Schedule means the Disclosure Schedule, dated as of the
          -------------------                                               
     date hereof, delivered to the Buyer by the Seller in connection with this
     Agreement.

          DOJ has the meaning set forth in Section 4.4 hereof.
          ---                                                 

 
                                                                              58

          Employee Benefit Plans means all "employee benefit plans" within the
          ----------------------                                              
     meaning of Section 3(3) of ERISA, all bonus, stock option, stock purchase,
     incentive, deferred compensation, retirement, supplemental retirement,
     severance and other employee benefit plans, programs, policies or
     arrangements, and all employment, retention, change of control or
     compensation agreements, in each case for the benefit of, or relating to,
     any current employee or former employee of any of the Companies or Company
     Subsidiaries, other than any de minimis, fringe or unwritten benefit plans,
     programs, policies or arrangements, the costs of which, to the Sellers, are
     not material.

          Encumbrance means any security interest, pledge, mortgage, lien
          -----------                                                    
     (including, without limitation, tax liens), charge, encumbrance, easement,
     adverse claim, preferential arrangement, restriction or defect in title
     that adversely affects the use of the property in the manner it is being
     used prior to the Closing Date or the value of the property as measured in
     the context of the current uses thereof.

          Environmental Claims means any and all actions, suits, demands, demand
          --------------------                                                  
     letters, claims, liens, notices of non-compliance or violation,
     investigations, proceedings, consent orders or consent agreements relating
     in any way to any Environmental Law, any Environmental Permit, Hazardous
     Materials or arising from alleged injury or threat of injury to health,
     safety or the environment, including, without limitation (a) by
     Governmental Authorities for enforcement, cleanup, removal, response,
     remedial or other actions or damages and (b) by any Person for damages,
     contributions, indemnification, cost recovery, compensation or injunctive
     relief.

          Environmental Law means any Law relating to the environment, health,
          -----------------                                                   
     safety or Hazardous Materials, in force and effect on the date hereof or,
     in the case of the Sellers' certificate to be delivered in accordance with
     the provisions of Section 5.3 hereof, on the Closing Date (exclusive of any
     amendments or changes to such Law or any regulations promulgated thereunder
     or orders, decrees or judgments issued pursuant thereto which are enacted,
     promulgated or issued after the date hereof, or in the case of such
     certificate, on or after the Closing Date), including but not limited to,
     CERCLA; the Resource Conservation and Recovery Act of 1986 and Hazardous
     and Solid Waste Amendments of 1984, 42 U.S.C. (S)(S)6901 et seq.; the 
                                                              ------ 
     Hazardous Materials Transportation Act, 49 U.S.C. (S)(S)6901 et seq.; the 
                                                                  ------ 
     Clean Water Act, 33 U.S.C. (S)(S)1251 et seq.; the Toxic Substances Control
                                           ------
     Act of 1976, 15 U.S.C. (S)(S)2601 et seq.; the Clean Air Act of 1966, as
                                       ------
     amended, 42 U.S.C. (S)(S)7401 et seq.; the Safe Drinking Water Act, 42
                                   ------ 
     U.S.C. (S)(S)300f et seq.; the Atomic Energy Act, 42 U.S.C. (S)(S)2011 et
                       ------                                               --  
     seq.; the Federal Insecticide, Fungicide and Rodenticide Act, 7 U.S.C.
     ---
     (S)(S)136 et seq.; and the Emergency Planning and Community Right-to-Know
               ------  
     Act of 1986, 42 U.S.C. (S)(S)1101 et seq.
                                       ------

          Environmental Permits means all permits, approvals, identification
          ---------------------                                             
     numbers, licenses and other authorizations required under any applicable
     Environmental Law.

          Equipment means all of the tangible personal property, machinery,
          ---------                                                        
     equipment, vehicles, rolling stock, furniture, and fixtures of the Frontier
     LEC Business in which any 

 
                                                                              59

     Company or Company Subsidiary has an interest, by ownership or lease,
     together with any replacements thereof, or additions thereto made in the
     ordinary course of business between the date hereof and the Closing Date.

          ERISA means the Employee Retirement Income Security Act of 1974, as
          -----                                                              
     amended.

          Estimated Adjustment has the meaning set forth in Section 1.3 hereof.
          --------------------                                                 

          FCC means the Federal Communications Commission.
          ---                                             

          Financing Commitments has the meaning set forth in Section 3.6 hereof.
          ---------------------                                                 

          Frontier LEC Business means the local exchange carrier operations of
          ---------------------                                               
     Global and its Subsidiaries, and the cable television operations and
     wireless and cellular telephone operations of the Companies and Company
     Subsidiaries, including, without limitation, the incumbent and competitive
     local exchange carrier operations of Frontier Telephone of Rochester, Inc.,
     the rural local exchange carrier operations of the other Companies and the
     Company Subsidiaries and the retail Internet access, Web hosting, data
     services (IP frame relay and asynchronous transfer mode) and directory
     services operations currently provided by the Companies and Company
     Subsidiaries, but excluding (i) competitive local exchange carrier and
     resold cellular and other wireless operations other than those conducted by
     the Companies or the Company Subsidiaries immediately prior to the Closing,
     (ii) long distance service operations other than (x) the retail long
     distance customer base purchased by the Companies and the Company
     Subsidiaries and/or (y) marketing, sales, customer service, and billing and
     collection services performed by the Companies and the Company Subsidiaries
     on an agency or contract basis relating to long distance services not
     purchased by the Companies and Company Subsidiaries, (iii) the assets and
     services identified in Section 2.5 of the Disclosure Schedule as excluded
     from the Frontier LEC Business and (iv) Sellers' non-LEC marketed long
     distance services (such as 800 services marketed nationally to families
     with college students).  For purposes for this definition, "local exchange
     carrier operations" means the provision in the relevant geographic area of
     (A) wireline local exchange, digital subscriber line, exchange access and
     (to the extent not provided by Subsidiaries of the Sellers other than the
     Companies and Company Subsidiaries) intra-LATA toll telecommunications
     services to end users,  (B) wireline exchange access telecommunications
     services to interexchange carriers and other local exchange carriers, (C)
     retail sales of telephone equipment and products (subject to the non-
     compete agreement disclosed in Section 2.11 of the Disclosure Schedule)
     and (D) non-tariffed public communications (pay telephones), commercial
     telecommunications services facilities leasing and certain other non-
     regulated services and products.

          GAAP means United States generally accepted accounting principles and
          ----                                                                 
     practices as in effect from time to time.

 
                                                                              60

          GCNA has the meaning set forth in the introductory paragraph to this
          ----                                                                
     Agreement.

          Global has the meaning set forth in the introductory paragraph to this
          ------                                                                
     Agreement.

          Governmental Authority means any United States federal, state or local
          ----------------------                                                
     government or any foreign government, any governmental, regulatory,
     legislative, executive or administrative authority, agency or commission or
     any court, tribunal, or judicial body.

          Governmental Order means any order, writ, judgment, injunction,
          ------------------                                             
     decree, stipulation, determination or award entered by or with any
     Governmental Authority.  Governmental Orders shall not include Permits.

          Hazardous Materials means petroleum and petroleum products, byproducts
          -------------------                                                   
     or breakdown products, radioactive materials, and any other chemicals,
     materials, or substances designated, classified or regulated as being
     "hazardous" or "toxic", or words of similar import, under any Environmental
     Law.

          HSR Act means the Hart-Scott-Rodino Antitrust Improvements Act of
          -------                                                          
     1976, as amended, and the rules and regulations promulgated thereunder.

          Indebtedness means obligations with regard to borrowed money and
          ------------                                                    
     leases classified or accounted for as capital or financing leases on
     financial statements, but shall expressly not include either accounts
     payable or accrued liabilities that are incurred in the ordinary course of
     business or obligations under operating leases classified or accounted for
     as such on financial statements.

          Indemnified Party has the meaning set forth in Section 9.5 hereof.
          -----------------                                                 

          Indemnifying Party has the meaning set forth in Section 9.5 hereof.
          ------------------                                                 

          Intellectual Property means all patents, trademarks, trade names,
          ---------------------                                            
     domain names, service marks and copyrights, and applications for any of the
     foregoing, and other intellectual property, including, without limitation,
     computer software and programs, of the Frontier LEC Business, whether owned
     or used by, or licensed to, any Company or Company Subsidiary.

          knowledge with respect to the Sellers means, exclusively, information
          ---------                                                            
     of which the Chief Executive Officer, the Chief Financial Officer or any
     other employee of a Seller of Salary Band Level 35 or above in GCNA's pay
     scale has knowledge after reasonable inquiry of the appropriate managerial
     employee of the Frontier LEC Business having supervisory responsibility for
     the matter concerned.

          Law means any federal, state, local or foreign statute, law,
          ---                                                         
     ordinance, regulation, rule, code, order or other requirement or rule of
     law.

 
                                                                              61

          Liability Claim has the meaning set forth in Section 9.1 hereof.
          ---------------                                                 

          Material Adverse Effect means any circumstance, change in, or effect
          -----------------------                                             
     on the Companies or Company Subsidiaries that has a material adverse effect
     on the business, results of operations or financial condition of the
     Frontier LEC Business taken as a whole; provided, however, that Material
                                             --------  -------               
     Adverse Effect shall not include adverse effects relating to or resulting
     from (or, in the case of effects that have not yet occurred, reasonably
     likely to result from) (i) the execution of this Agreement or the
     announcement of agreement among the parties with respect to the
     transactions contemplated by this Agreement, (ii) general economic or
     industry conditions that have a similar effect on other participants in the
     industry or (ii) regional economic or industry conditions that have a
     similar effect on other participants in the industry in such region.

          Material Contracts means the written agreements, contracts, policies,
          ------------------                                                   
     plans, mortgages, understandings, arrangements or commitments primarily
     relating to the Frontier LEC Business to which any Company or Company
     Subsidiary is a party or by which any of the assets of the Frontier LEC
     Business are bound as described below:

                    (i)   any agreement or contract providing for payments by
          the Companies or Company Subsidiaries to any Person in excess of
          $10,000,000 per year or $30,000,000 in the aggregate over the five-
          year period commencing on the date hereof;

                    (ii)  any employment agreement or consulting agreement or
          similar  contract providing for payments to any Person in excess of
          $350,000 per year or $1,500,000 in the aggregate over the five-year
          period commencing on the date hereof;

                    (iii) any retention or severance agreement or contract
          with respect to any officer of the Frontier LEC Business who is to be
          employed by any Company or Company Subsidiary following the Closing
          Date;

                    (iv)  any lease of Equipment or Real Property or license
          with respect to Intellectual Property (other than licenses granted in
          connection with the purchase of equipment or other assets) by the
          Frontier LEC Business from another Person providing for payments to
          another Person in excess of $10,000,000 per year or $30,000,000 in the
          aggregate over the five-year period commencing on the date hereof;

                    (v)   any lease of Equipment or Real Property or license
          with respect to Intellectual Property (other than licenses granted in
          connection with the purchase of equipment or other assets) by the
          Frontier LEC Business to another Person providing for payments to the
          Seller or any Company or Company 

 
                                                                              62

          Subsidiary in excess of $10,000,000 per year or $30,000,000 in the
          aggregate over the five-year period commencing on the date hereof;

                    (vi)   any joint venture, partnership or similar agreement
          or contract of the Frontier LEC Business;

                    (vii)  any agreement or contract under which any Company or
          Company Subsidiary, or a Seller in connection with the Frontier LEC
          Business, has borrowed or loaned any money in excess of $25,000,000 or
          issued or received any note, bond, indenture or other evidence of
          indebtedness in excess of $25,000,000 or directly or indirectly
          guaranteed indebtedness, liabilities or obligations of others in an
          amount in excess of $25,000,000;

                    (viii) any covenant not to compete or contract or agreement,
          understanding, arrangement or any restriction whatsoever limiting in
          any respect the ability of any Company or Company Subsidiary to
          compete in any line of business or with any Person or in any area;

                    (ix)   any agreement or contract with any officer, director
          or employee of either Seller or any Company or Company Subsidiary
          (other than employment agreements covered in clause (i) or agreements
          or contracts containing terms substantially similar to terms available
          to employees generally) or agreement or contract with either Seller or
          any Subsidiary of Global that is neither a Company or Company
          Subsidiary providing for payments in excess of $10,000,000 per year or
          $30,000,000 in the aggregate over the five-year period commencing on
          the date hereof; and

                    (x)    any resale, co-location or interconnection agreement.

     Material Contracts shall not include any and all (w) contracts, purchase
     orders, purchase commitments, leases and agreements entered into in the
     ordinary course of business and relating to the Frontier LEC Business
     (other than those described in clauses (iii), (iv), (v) or (vi) above) that
     (A) are terminable at will without payment of premium or penalty by any
     Company or Company Subsidiary or (B) are terminable on not more than 60
     days' written notice without payment of premium or penalty and do not
     involve the obligation of any Company or Company Subsidiary to make
     payments in excess of $25,000,000 during the 60-day period commencing on
     the Closing Date; (x) contracts, sales orders, purchase orders, purchase
     commitments and agreements entered into in the ordinary course of business
     and relating to integrated marketing services or related services of the
     Frontier LEC Business.

          Neutral Auditor has the meaning set forth in Section 1.4 hereof.
          ---------------                                                 

          Neutral Auditor Determination has the meaning set forth in Section 1.4
          -----------------------------                                         
     hereof.

 
                                                                              63

          Notice of Claim has the meaning set forth in Section 9.5 hereof.
          ---------------                                                 

          Option Deductions has the meaning set forth in Section 7.10 hereof.
          -----------------                                                  

          Performance Adjustment has the meaning set forth in Section 1.3
          ----------------------                                         
     hereof.

          Permits has the meaning set forth in Section 2.12 hereof.
          -------                                                  

          Permitted Exceptions means each of the following:
          --------------------                             

               (a)  mortgages, security interests or other Encumbrances
          described in Section 2.11 of the Disclosure Schedule;

               (b)  liens for taxes, assessments and governmental charges or
          levies not yet due and payable or the validity of which is being
          contested in good faith by appropriate proceedings;

               (c)  Encumbrances imposed by law, such as materialmen's,
          mechanics', carriers', workmen's and repairmen's liens and other
          similar liens, arising in the ordinary course of business;

               (d)  pledges or deposits to secure obligations under workers'
          compensation laws or similar legislation or to secure public or
          statutory obligations;

               (e)  survey exceptions, rights of way, easements, reciprocal
          easement agreements and other Encumbrances on title to real property
          that do not, individually or in the aggregate, materially adversely
          affect the use of such property in the conduct of the Frontier LEC
          Business as it is being conducted prior to the Closing Date;

               (f)  zoning laws and other land use restrictions that do not
          materially detract from the value or impair the use of the property
          subject thereto, or materially impair the operation of the Frontier
          LEC Business;

               (g)  security interests in favor of suppliers of goods for which
          payment has not been made in the ordinary course of business
          consistent with past practice;

               (h)  Encumbrances on the interests of the lessors of properties
          in which the Frontier LEC Business holds a leasehold interest; and

               (i)  any and all other Encumbrances that would be immaterial to
          the Frontier LEC Business.

          Person means any individual, partnership, firm, corporation, limited
          ------                                                              
     liability company, association, trust, unincorporated organization or other
     entity, as well as any 

 
                                                                              64

     syndicate or group that would be deemed to be a person under Section
     13(d)(3) of the Securities Exchange Act of 1934, as amended.

          Pre-Closing Tax Period has the meaning set forth in Section 7.1
          ----------------------                                         
     hereof.

          Probable Assets has the meaning set forth in Section 9.8.
          ---------------                                          

          Probable Assets List has the meaning set forth in Section 9.8.
          --------------------                                          

          Probable Assets Statement has the meaning set forth in Section 1.4.
          -------------------------                                          

          Probable Liabilities has the meaning set forth in Section 9.8.
          --------------------                                          

          Probable Liabilities List has the meaning set forth in Section 9.8.
          -------------------------                                          

          Probable Liabilities Statement has the meaning set forth in Section
          ------------------------------                                     
     1.4.

          Proposed Adjustment has the meaning set forth in Section 1.4 hereof.
          -------------------                                                 

          PUC means any state public service commission or similar regulatory
          ---                                                                
     body.

          Purchase Price has the meaning set forth in Section 1.3 hereof.
          --------------                                                 

          Real Property means the real property and related mineral rights owned
          -------------                                                         
     by, and all easements, rights-of-way and other possessory interests in real
     estate of, the Frontier LEC Business, together with all buildings and other
     structures, facilities or improvements currently or hereafter located
     thereon, all fixtures, systems, equipment and items of personal property of
     the Frontier LEC Business attached or appurtenant thereto, and all
     easements, licenses, rights and appurtenances relating to the foregoing.

          Regulatory Law has the meaning set forth in Section 4.4(b).
          --------------                                             

          Release means disposing, discharging, injecting, spilling, leaking,
          -------                                                            
     leaching, dumping, emitting, escaping, emptying, seeping, placing and the
     like into or upon any land or water or air or otherwise entering into the
     environment.

          Required Consents means any consents, approvals, orders,
          -----------------                                       
     authorizations, registrations, declarations and filings required under or
     in relation to (a) the HSR Act, (b) the Communications Act of 1934, as
     amended, and any rules and regulations promulgated by the FCC, (c) state
     securities or "blue sky" laws, (d) the Securities Act of 1933, as amended,
     (e) the Securities Exchange Act of 1934, as amended, (f) laws, rules,
     regulations, practices and orders of any state or PUCs, local franchising
     authorities, foreign telecommunications regulatory agencies or similar
     state or foreign regulatory bodies, or the Federal Energy Regulatory
     Commission, (g) rules and regulations of The 

 
                                                                              65

     Nasdaq Stock Market and The New York Stock Exchange, Inc. and (h) antitrust
     or other competition Laws of other jurisdictions.

          S&P means Standard & Poor's Corporation.
          ---                                     

          Sale has the meaning set forth in the recitals hereto.
          ----                                                  

          Sellers has the meaning set forth in the introductory paragraph to
          -------                                                           
     this Agreement.

          Shares has the meaning set forth in Section 1.1 hereof.
          ------                                                 

          Special Representations has the meaning set forth in Section 5.1
          -----------------------                                         
     hereof.

          Straddle Period has the meaning set forth in Section 7.1 hereof.
          ---------------                                                 

          Subsidiary of any Person means (i) any corporation more than 50% of
          ----------                                                         
     whose stock of any class or classes having by the terms thereof ordinary
     voting power to elect a majority of the directors of such corporation is
     owned by such Person directly or indirectly through Subsidiaries and (ii)
     any partnership, limited partnership, limited liability company,
     associates, joint venture or other entity in which such Person directly or
     indirectly through Subsidiaries has more than a 50% equity interest.

          Tax or Taxes means any and all taxes, fees, withholdings, levies,
          ------------                                                     
     duties, tariffs, imposts, and other charges of any kind (together with any
     and all interest, penalties, additions to tax and additional amounts
     imposed with respect thereto) imposed by any government or taxing
     authority, including, without limitation, taxes or other charges on or with
     respect to income, franchises, windfall or other profits, gross receipts,
     property, sales, use, capital stock, payroll, employment, social security,
     workers' compensation, unemployment compensation, or net worth, taxes or
     other charges in the nature of excise, withholding, ad valorem, stamp,
     transfer, value added or gains taxes, license, registration and
     documentation fees, and customs duties, tariffs and similar charges.

          Tax Return means any report, return, document, declaration or other
          ----------                                                         
     information or filing required to be supplied to any Tax authority or
     jurisdiction (foreign or domestic) with respect to Taxes, including,
     without limitation, information returns, any documents with respect to or
     accompanying payments of estimated Taxes, or with respect to or
     accompanying requests for the extension of time in which to file any such
     report, return, document, declaration or other information.

          Union Employee means a Business Employee whose terms and conditions of
          --------------                                                        
     employment are governed by the terms of any Assumed CBA (as defined in
     Section 8.5).

          Working Capital Adjustment has the meaning set forth in Section 1.3
          --------------------------                                         
     hereof.

 
                                                                              66

          Article 11.  Miscellaneous Provisions.
                       ------------------------ 

          11.1  Termination Rights.  (a)  Grounds for Termination.  This
                ------------------        -----------------------       
Agreement may be terminated:

          (1)  by mutual consent of the parties;

          (2)  by either the Sellers or the Buyer, provided such party or
     parties are not then in material default hereunder, upon written notice to
     the other party or parties, if the Closing hereunder has not occurred on or
     before December 31, 2001; provided that if all Required Consents have been
     obtained but have not become final and non-appealable as of such date, then
     such date shall be extended to March 31, 2002; or

          (3)  by either the Sellers or the Buyer, upon written notice to the
     other party or parties, if any Governmental Authority shall have issued a
     statute, rule, regulation, order, decree or injunction or taken any other
     action permanently restraining, enjoining or otherwise prohibiting the
     purchase and sale contemplated by this Agreement and such statute, rule,
     regulation, order, decree or injunction or other action shall have become
     final and nonappealable.

          (b)  Post-Termination Liability.  If this Agreement is terminated
               --------------------------                                  
pursuant to Subsection 11.1(a) hereof, this Agreement shall thereupon become
void and of no further effect whatsoever, and the parties shall be released and
discharged of all obligations under this Agreement, except (i) to the extent of
a party's liability for willful material breaches of this Agreement prior to the
time of such termination, (ii) as set forth in Section 4.5 hereof and (iii) the
obligations of each party for its own expenses incurred in connection with the
transactions contemplated by this Agreement as provided herein.

          11.2 Expenses.  Except as otherwise specifically provided in this
               --------                                                    
Agreement, all out-of-pocket costs and expenses, including, without limitation,
fees and disbursements of counsel, financial advisors and accountants, incurred
in connection with this Agreement and the transactions contemplated hereby shall
be paid by the party incurring such costs and expenses, whether or not the
Closing shall have occurred.

          11.3 Notices.  Any notice, demand, claim, notice of claim, request or
               -------                                                         
communication required or permitted to be given under the provisions of this
Agreement shall be in writing and shall be deemed to have been duly given (i)
upon delivery if delivered in person, (ii) on the date of mailing if mailed by
registered or certified mail, postage prepaid and return receipt requested,
(iii) on the date of delivery to a national overnight courier service, or (iv)
upon transmission by facsimile (if such transmission is confirmed by the
addressee) if delivered through such services to the following addresses, or to
such other address as any party may request by notifying in writing all of the
other parties to this Agreement in accordance with this Section 11.3.

          If to the Sellers:
 

 
                                                                              67

                    Global Crossing Ltd.
                    360 North Crescent Drive
                    Beverly Hills, California 90210
                    Attention:     James Gorton, Esq.
                                   Senior Vice President and General Counsel
                    Facsimile No.: (310) 281-5820

                            and

                    Global Crossing North America, Inc.    
                    180 South Clinton Avenue               
                    Rochester, New York 14646             
                    Attention:     Joseph P. Clayton         
                                   Chief Executive Officer         
                    Facsimile No.: (716) 325-7639          

             with copies to:

                    Global Crossing North America, Inc.               
                    180 South Clinton Avenue                          
                    Rochester, New York 14646                        
                    Attention:     Martin T. McCue, Esq.                
                                   Senior Vice President and General Counsel  
                    Facsimile No.: (716) 546-7823                    

                            and

                    Robert E. Spatt, Esq.
                    Simpson Thacher & Bartlett
                    425 Lexington Avenue
                    New York, New York 10017-3954
                    Facsimile No.:  (212) 455-2502


     If to the Buyer:

                    Citizens Communications Company
                    High Ridge Park
                    Stamford, Connecticut 06905
                    Attention:     Scott N. Schneider
                                   Executive Vice President
                    Facsimile No.: (203) 614-5201

 
                                                                              68

with copies to:

     Citizens Communications Company
     High Ridge Park
     Stamford, Connecticut 06905
     Attention:     L. Russell Mitten, Esq.
                    Vice President and General Counsel
     Facsimile No.: (203) 614-4651

                    and

     Jeffrey L. Hardin, Esq.
     Fleischman and Walsh, L.L.P.
     1400 Sixteenth Street, N.W.
     Suite 600
     Washington, D.C. 20036
     Facsimile No.: (202) 387-3467


Any such notice shall be deemed to have been received on the date of personal
delivery, the date set forth on the Postal Service return receipt, or the date
of delivery shown on the records of the overnight courier, as applicable.

          11.4  Benefit and Assignment.  This Agreement will be binding upon and
                ----------------------                                          
inure to the benefit of the parties hereto and their respective successors and
permitted assigns.  There shall be no assignment of any interest under this
Agreement by any party except that the Buyer may assign its rights hereunder to
any wholly owned subsidiary of the Buyer; provided, however, that no such
                                          --------  -------              
assignment shall relieve the assignor of its obligations under this Agreement.
Nothing herein, express or implied, is intended to or shall confer upon any
other Person any legal or equitable right, benefit or remedy of any nature
whatsoever under or by reason of this Agreement.

          11.5  Waiver.  Any party to this Agreement may (a) extend the time for
                ------                                                          
the performance of any of the obligations or other acts of any other party, (b)
waive any inaccuracies in the representations and warranties of any other party
contained herein or in any document delivered by any other party pursuant hereto
or (c) waive compliance with any of the agreements or conditions of any other
party contained herein.  Any such extension or waiver shall be valid only if set
forth in an instrument in writing signed by the party to be bound thereby.  Any
waiver of any term or condition shall not be construed as a waiver of any
subsequent breach or a subsequent waiver of the same term or condition, or a
waiver of any other term or condition, of this Agreement.  The failure of any
party to assert any of its rights hereunder shall not constitute a waiver of any
such rights.

          11.6  Severability.  If any term or other provision of this Agreement
                ------------                                                   
is invalid, illegal or incapable of being enforced by any Law or public policy,
all other terms and provisions of this Agreement shall nevertheless remain in
full force and effect so long as the economic or 

 
                                                                              69

legal substance of the transactions contemplated hereby is not affected in any
manner materially adverse to any party. Upon such determination that any term or
other provision is invalid, illegal or incapable of being enforced, the parties
hereto shall negotiate in good faith to modify this Agreement so as to effect
the original intent of the parties as closely as possible in an acceptable
manner in order that the transactions contemplated hereby are consummated as
originally contemplated to the greatest extent possible.

          11.7  Amendment.  This Agreement may not be amended or modified except
                ---------                                                       
(a) by an instrument in writing signed by, or on behalf of, the Seller and the
Buyer or (b) by a waiver in accordance with Section 11.5 hereof.

          11.8  Effect and Construction of this Agreement.  This Agreement
                -----------------------------------------                 
embodies the entire agreement and understanding of the parties with respect to
the subject matter hereof and supersedes any and all prior agreements,
arrangements and understandings, whether written or oral, relating to matters
provided for herein; provided, however, that the Confidentiality Agreement shall
                     --------  -------                                          
remain in effect until the Closing.  The language used in this Agreement shall
be deemed to be the language chosen by the parties hereto to express their
mutual agreement, and this Agreement shall not be deemed to have been prepared
by any single party hereto.  Disclosure of any fact or item in the Disclosure
Schedule referenced by a particular paragraph or section in this Agreement
shall, should the existence of the fact or item be relevant to any other
paragraph or section, be deemed to be disclosed with respect to that other
paragraph or section whether or not a specific cross reference appears to the
extent that the fact or item disclosed is reasonably clearly applicable to such
other paragraph or section.  Disclosure of any fact or item in the Disclosure
Schedule shall not necessarily mean that such item or fact, individually or in
the aggregate, is material to the business, results of operations or financial
condition of the Frontier LEC Business or that it is probable that any
impairment or liability will result therefrom.  The headings of the sections and
subsections of this Agreement are inserted as a matter of convenience and for
reference purposes only and in no respect define, limit or describe the scope of
this Agreement or the intent of any section or subsection.  This Agreement may
be executed in one or more counterparts and by the different parties hereto in
separate counterparts, each of which when executed shall be deemed to be an
original but all of which taken together shall constitute one and the same
agreement.  This Agreement shall be governed by, and construed in accordance
with, the laws of the State of New York, applicable to contracts executed in and
to be performed entirely within that State.

          11.9  Specific Performance.  Each of the parties hereto acknowledges
                --------------------                                          
and agrees that in the event of any breach of this Agreement, each non-breaching
party would be irreparably and immediately harmed and could not be made whole by
monetary damages.  It is accordingly agreed that the parties hereto (i) waive,
in any action for specific performance, the defense of adequacy of a remedy at
law and (ii) shall be entitled, in addition to any other remedy to which they
may be entitled at law or in equity, to compel specific performance of this
Agreement in any action instituted in any state or federal court sitting in New
York, New York.

 
                                                                              70

          IN WITNESS WHEREOF, the parties hereto have executed this Agreement as
of the day and year first above written.

                                        GLOBAL CROSSING LTD.



                                        By:  /s/ Thomas J. Casey
                                           ---------------------------------
                                             Name: Thomas J. Casey
                                             Title:  Vice Chairman


                                        GLOBAL CROSSING NORTH AMERICA, INC.



                                        By:  /s/ Martin T. McCue
                                           ---------------------------------
                                             Name: Martin T. McCue
                                             Title:  Senior Vice President


                                        CITIZENS COMMUNICATIONS COMPANY



                                        By:  /s/ Scott N. Schneider
                                           ---------------------------------
                                             Name: Scott N. Schneider
                                             Title:  Executive Vice President