PAGEMART WIRELESS INC
10-K405/A, 1999-02-26
RADIOTELEPHONE COMMUNICATIONS
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<PAGE>   1
 
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- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                         ------------------------------
 
                                  FORM 10-K/A
                               (AMENDMENT NO. 1)
 
<TABLE>
<C>              <S>
   (MARK ONE)
 
        X        ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF
      ----       THE SECURITIES EXCHANGE ACT OF 1934 [NO FEE REQUIRED]
                 FOR THE FISCAL YEAR ENDED DECEMBER 31, 1997
 
                                              OR
 
      ----       TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                 THE SECURITIES EXCHANGE ACT OF 1934 [NO FEE REQUIRED]
                 FOR THE TRANSITION PERIOD FROM ------------ TO ------------
</TABLE>
 
                          COMMISSION FILE NO. 0-28196
                         ------------------------------
                            PAGEMART WIRELESS, INC.
               (Exact name of registrant as specified in charter)
 
<TABLE>
<S>                                            <C>
                   DELAWARE                                           75-2575229
       (State or other jurisdiction of                             (I.R.S. Employer
        incorporation or organization)                          Identification Number)
</TABLE>
 
                          3333 LEE PARKWAY, SUITE 100
                              DALLAS, TEXAS 75219
                    (Address of principal executive offices)
 
      (Registrant's telephone number, including area code): (214) 765-4000
                         ------------------------------
        SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT: NONE
 
          SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT:
 
                              TITLE OF EACH CLASS
                                ---------------
 
               Class A Common Stock, par value $0.0001 per share
                         ------------------------------
     Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to
filing requirements for the past 90 days.  Yes [X]   No [ ]
 
     Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K.  [X]
 
     The aggregate market value of the voting stock held by non-affiliates of
the Registrant, based upon the closing sale price of the Common Stock on January
31, 1998 as reported on the Nasdaq National Market System, was approximately
$76,430,161. Shares of Common Stock held by each executive officer and director
and by each person who owns 5% or more of the outstanding Common Stock have been
excluded in that such persons may be deemed to be affiliates. This determination
of affiliate status for this purpose is not necessarily a conclusive
determination for other purposes.
 
     As of January 31, 1998, 34,150,907 shares of the Registrant's Class A
Common Stock were outstanding.
 
                      DOCUMENTS INCORPORATED BY REFERENCE:
 
     Portions of the Registrant's Proxy Statement for its Annual Meeting of
Stockholders scheduled to be held on April 8, 1998 are incorporated by reference
into Part III (items 11, 12 and 13) hereof.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2
 
EXPLANATORY NOTE
 
     The registrant hereby amends Item 14 of its Annual Report on Form 10-K for
the fiscal year ended March 31, 1998, as set forth on the pages attached hereto.
 
                                    PART IV
 
ITEM 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K
 
     (a) The following documents are filed as part of this 10-K:
 
        (1) Financial Statements. See Index to Consolidated Financial Statements
        on Page F-1 hereof.
 
        (2) Financial Statement Schedules. See Index to Consolidated Financial
        Statements on Page F-1 hereof.
 
        (3) Exhibits Required by Item 601 of Regulation S-K. See Exhibit Index
        on Page E-1 hereof.
 
     (b) Reports on Form 8-K
 
     The following current report on Form 8-K was filed by PageMart Wireless,
Inc. during the quarter ended December 31, 1997:
 
        Current Report on Form 8-K dated November 3, 1997 reporting under Item
        5 "Other Events" the Company's proposal to refinance certain of its
        outstanding indebtedness and modify its corporate structure.
<PAGE>   3
 
                                   SIGNATURES
 
     Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.
 
Date: February   , 1999                     PAGEMART WIRELESS, INC.
                                            (Registrant)
 
                                            By:     /s/ JOHN D. BELETIC
                                              ----------------------------------
                                                       John D. Beletic
                                                 Chairman and Chief Executive
                                                            Officer
 
     Pursuant to the requirements of the Securities Exchange Act of 1934, this
report has been signed below by the following persons on behalf of the
registrant and in the capacities and on the dates indicated.
 
<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                     DATE
                      ---------                                   -----                     ----
<C>                                                    <S>                            <C>
 
                 /s/ JOHN D. BELETIC                   Chairman and Chief Executive   February 26, 1999
- -----------------------------------------------------  Officer (Principal Executive
                   John D. Beletic                     Officer)
 
                  /s/ G. CLAY MYERS                    Vice President, Finance,       February 26, 1999
- -----------------------------------------------------  Chief Financial Officer and
                    G. Clay Myers                      Treasurer (Principal
                                                       Financial and Accounting
                                                       Officer)
 
                                                       Director                       February   , 1999
- -----------------------------------------------------
                 Michael C. Hoffman
 
                /s/ GUY L. DE CHAZAL                   Director                       February 26, 1999
- -----------------------------------------------------
                  Guy L. De Chazal
 
                /s/ ARTHUR PATTERSON                   Director                       February 26, 1999
- -----------------------------------------------------
                  Arthur Patterson
 
                /s/ LEIGH J. ABRAMSON                  Director                       February 26, 1999
- -----------------------------------------------------
                  Leigh J. Abramson
 
            /s/ ALEJANDRO PEREZ ELIZONDO               Director                       February 26, 1999
- -----------------------------------------------------
              Alejandro Perez Elizondo
 
                /s/ PAMELA D.A. REEVE                  Director                       February 26, 1999
- -----------------------------------------------------
                  Pamela D.A. Reeve
 
                 /s/ STEVEN B. DODGE                   Director                       February 26, 1999
- -----------------------------------------------------
                   Steven B. Dodge
</TABLE>
<PAGE>   4
 
                                 EXHIBIT INDEX
 
<TABLE>
<CAPTION>
        EXHIBIT
          NO.                                 DESCRIPTION OF EXHIBIT
        -------                               ----------------------
<C>                        <S>
 
          3.1*             Restated Certificate of Incorporation of PageMart Wireless,
                           Inc. (filed as an exhibit to the Registration Statement on
                           Form S-1 of the Company (Reg. No. 33-03012), and
                           incorporated herein by reference).
          3.2*             Certificate of Amendment to Restated Certificate of
                           Incorporation of PageMart Wireless, Inc. (filed as an
                           exhibit to the Registration Statement on Form S-1 of the
                           Company (Reg. No. 33-03012), and incorporated herein by
                           reference).
          3.3*             By-laws of PageMart Wireless, Inc.
          4.1*             Indenture, dated as of January 28, 1998, between PageMart
                           Wireless, Inc. and United States Trust Company of New York,
                           as Trustee, relating to the 11 1/4% Senior Subordinated
                           Discount Notes due 2008.
          4.2*             Indenture, dated as of January 17, 1995, between PageMart
                           Wireless, Inc. and United States Trust Company of New York,
                           as Trustee, relating to the 15% Senior Discount Notes due
                           2005. (filed as an exhibit to the Registration Statement on
                           Form S-1 of the Company (Reg. No. 33-91142), and
                           incorporated herein by reference).
          4.3*             First Supplemental Indenture, dated as of December 31, 1997,
                           among PageMart Wireless, Inc. and United States Trust
                           Company of New York, as Trustee (filed as an exhibit to the
                           Form 8-K of the Company dated January 28, 1998, and
                           incorporated herein by reference).
         10.1*             Warrant Agreement, dated as of October 19, 1993, between
                           PageMart, Inc. and United States Trust Company of New York,
                           as Warrant Agent, relating to the Warrants to purchase
                           Common Stock of the Company (filed as an exhibit to the Form
                           10-K of the Company for the fiscal year ended December 31,
                           1994, and incorporated herein by reference).
         10.2*             Telecommunications Service Agreement, dated May 29, 1992,
                           between PageMart, Inc. and Wiltel, Inc. (filed as an exhibit
                           to the Registration Statement on Form S-1 of the Company
                           (Reg. No. 33-91142), and incorporated herein by reference).
         10.3              Amended and Restated Satellite Services Supplemental
                           Agreement, dated as of December 18, 1997, between PageMart
                           Wireless, Inc. and AvData Systems, Inc.(1)
         10.4*             Satellite Services and Space Segment Lease Agreement, dated
                           January 2, 1995, between PageMart, Inc. and SpaceCom
                           Systems, Inc. (filed as an exhibit to the Registration
                           Statement on Form S-1 of the Company (Reg. No. 33-91142),
                           and incorporated herein by reference).
         10.5*             Credit Agreement, dated as of May 11, 1995, by and among
                           PageMart Wireless, Inc. (formerly known as PageMart
                           Nationwide, Inc.), the Lenders named therein, BT Commercial
                           Corporation, as Agent, and Bankers Trust Company, as Issuing
                           Bank. (filed as an exhibit to the Registration Statement on
                           Form S-1 of the Company (Reg. No. 33-91142), and
                           incorporated herein by reference).
         10.6*             Fourth Amendment to Credit Agreement, dated as of January
                           15, 1998, among PageMart Wireless, Inc., the Lenders named
                           therein, BT Commercial Corporation, as Agent, and Bankers
                           Trust Company, as Issuing Bank.
         10.7*             Promissory Note and Security Agreement, dated May 21, 1997,
                           between PageMart, Inc. and Glenayre Electronics, Inc. (filed
                           as an exhibit to the Form 10-Q of the Company for the
                           quarter ended June 30, 1997, and incorporated herein by
                           reference).
</TABLE>
 
                                       E-1
<PAGE>   5
 
<TABLE>
<CAPTION>
        EXHIBIT
          NO.                                 DESCRIPTION OF EXHIBIT
        -------                               ----------------------
<C>                        <S>
         10.8*             Amended and Restated Agreement Among Certain Stockholders of
                           PageMart Nationwide, Inc. dated as of September 19, 1995
                           (filed as an exhibit to the Form 8-K of the Company dated
                           October 6, 1995, and incorporated herein by reference).
         10.9*             Amendment No. 1 to Amended and Restated Agreement Among
                           Certain Stockholders, dated as of October 1, 1997, among
                           PageMart Wireless, Inc. and certain of its stockholders.
         10.10*            Subscription Agreement dated as of July 7, 1995 among
                           PageMart Nationwide, Inc., PageMart Canada Holding
                           Corporation and TD Capital Group Ltd. (filed as an exhibit
                           to the Registration Statement on Form S-1 of the Company
                           (Reg. No. 33-03012), and incorporated herein by reference).
         10.11*            Agreement Among Stockholders among PageMart Nationwide,
                           Inc., PageMart International, Inc., TD Capital Group Ltd.,
                           PageMart Canada Limited. (filed as an exhibit to the
                           Registration Statement on Form S-1 of the Company (Reg. No.
                           33-03012), and incorporated herein by reference).
         10.12*            Equipment Purchase Agreement, dated as of January 26, 1996,
                           between Motorola, Inc. and PageMart Wireless, Inc. (filed as
                           an exhibit to the Form 10-K of the Company for the fiscal
                           year ended December 31, 1995, and incorporated herein by
                           reference)(1).
         10.13*            Technology Asset Agreement, dated as of December 1, 1995,
                           between Motorola, Inc. and PageMart Wireless, Inc. (filed as
                           an exhibit to the Form 10-K of the Company for the fiscal
                           year ended December 31, 1995, and incorporated herein by
                           reference)(1).
         10.14*            PageMart Wireless, Inc. Employee Stock Purchase Plan (filed
                           as an exhibit to the Registration Statement on Form S-1 of
                           the Company (Reg. No. 33-03012), and incorporated herein by
                           reference).
         10.15*            PageMart Wireless, Inc. Nonqualified Formula Stock Option
                           Plan for Non-Employee Directors. (filed as an exhibit to the
                           Registration Statement on Form S-1 of the Company (Reg. No.
                           33-03012), and incorporated herein by reference).
         10.16*            Office Lease Agreement, dated as of November 26, 1996,
                           between Crescent Real Estate Equities Limited and PageMart
                           Wireless, Inc. (filed as an exhibit to the Company's Annual
                           Report on Form 10-K for the fiscal year ended December 31,
                           1996, and incorporated herein by reference).
         10.17*            PageMart Wireless, Inc. Fifth Amended and Restated 1991
                           Stock Option Plan (filed as an exhibit to the definitive
                           proxy statement of the Company dated April 18, 1997, and
                           incorporated herein by reference).
         10.18*            Severance and Reimbursement Agreement, dated September 12,
                           1997, between PageMart Wireless, Inc. and N. Ross Buckenham
                           (filed as an exhibit to the Form 10-Q of the Company for the
                           quarter ended September 30, 1997, and incorporated herein by
                           reference).
         10.19*            Resale Agreement, dated November 1, 1993, between PageMart,
                           Inc., licensor, and GTE Service Corporation, licensee.
                           (filed as an exhibit to the Registration Statement on Form
                           S-1 of the Company (Reg. No. 33-91142), and incorporated
                           herein by reference).
         10.20*            Strategic Alliance Agreement No. 1, dated September 15,
                           1994, between GTE Service Corporation and PageMart, Inc.
                           (filed as an exhibit to the Registration Statement on Form
                           S-1 of the Company (Reg. No. 33-91142), and incorporated
                           herein by reference).
</TABLE>
 
                                       E-2
<PAGE>   6
 
<TABLE>
<CAPTION>
        EXHIBIT
          NO.                                 DESCRIPTION OF EXHIBIT
        -------                               ----------------------
<C>                        <S>
         10.21*            Strategic Alliance Agreement No. 2, dated October 13, 1994,
                           between GTE Service Corporation and PageMart, Inc. (filed as
                           an exhibit to the Form 10-K of the Company for the fiscal
                           year ended December 31, 1994, and incorporated herein by
                           reference).
         10.22             Resale Agreement, dated as of December 12, 1997, between
                           PageMart Wireless, Inc. and GTE Communications
                           Corporation.(1)
         10.23*            Third Amended and Restated 1991 Stock Issuance Plan (filed
                           as an exhibit to the Registration Statement on Form S-8
                           (Reg. No. 33-98116), and incorporated herein by reference).
         10.24             Agreement between PageMart Incorporated and GTE
                           Communications Systems Corporation to assume and Amendment
                           No. 2 to Resale Agreement Number 999999-93-12 between
                           PageMart Incorporated and GTE Service Corporation, dated
                           October 2, 1997.(1)
         10.25             Resale Agreement between GTE MobileNet Service Corp.,
                           licensee and PageMart, Inc., licensor dated July 1, 1996.
         11.1*             Computation of per share earnings (loss) for the three
                           months ended December 31, 1997.
         11.2*             Computation of per share earnings (loss) for the three
                           months ended December 31, 1996.
         11.3*             Computation of per share earnings (loss) for the year ended
                           December 31, 1997.
         11.4*             Computation of per share earnings (loss) for the year ended
                           December 31, 1996.
         21.1*             PageMart Wireless, Inc. Subsidiaries.
         27.1*             Financial Data Schedule for the year ended December 31,
                           1997.
</TABLE>
 
- ---------------
 
(1) Confidential information has been deleted from this agreement. The omitted
    material has been separately filed with the Commission pursuant to an
    application for confidential treatment.
 
 *  Previously Filed.
 
                                       E-3

<PAGE>   1
                                                                    EXHIBIT 10.3

                              AMENDED AND RESTATED
                   SATELLITE SERVICES SUPPLEMENTAL AGREEMENT

                  THIS AMENDED AND RESTATED SATELLITE SERVICES SUPPLEMENTAL
AGREEMENT (the "SSS Agreement") is made and entered into as of December 18, 1997
(the "Execution Date") by and between AvData Systems, Inc., a Delaware
corporation ("AvData"), whose principal place of business is located at 55
Marietta Street, NW, Atlanta, Georgia 30303 and PageMart Wireless Inc. (the
"Customer" or "PageMart"), a corporation existing under the laws of the state of
Delaware with offices at 3333 Lee Parkway, Suite 100, Dallas, Texas, 75219.

                  WHEREAS, AvData and PageMart, Inc. entered into a Satellite
Services Supplemental Agreement dated as of September 30, 1995 (the "Existing
SSS Agreement") concerning the purchase of certain satellite services and have
subsequently amended the Existing SSS Agreement by Amendment Number 1 (the
"Amendment").

                  WHEREAS, PageMart, Inc. has assigned its rights in the
Existing SSS Agreement to its sole stockholder, Customer, and AvData and
Customer now desire to restate and amend the Existing SSS Agreement as amended
to reflect the parties' actions to date, to integrate the pertinent provisions
of the Amendment and to specify certain additional and/or revised terms and
conditions as more fully stated below;

                  WHEREAS, Customer and AvData have entered into an Amended and
Restated Master Agreement dated December 18, 1997 ("Master Agreement"); and

                  WHEREAS, the parties acknowledge and agree that the SSS
Agreement is a separate, free standing document, independent of the Master
Agreement and all of the parties' rights and obligations hereunder shall
continue in full force and effect notwithstanding any termination of or default
by either party under the Master Agreement; and

                  WHEREAS, AvData leases certain Ku-Band satellite transponder
capacity on multiple satellites, and Customer desires to purchase from AvData
and AvData is willing to provide to Customer, a portion of such satellite
transponder capacity for use in the VNI Network.

                                   AGREEMENT

                  NOW, THEREFORE, in consideration of the premises, and other
good and valuable consideration received and acknowledged, AvData and Customer
further agree that as of the Execution Date, the Existing SSS Agreement as
amended by the Amendment, is hereby amended and restated to read in its
entirety as follows:

                  During the Satellite Services Term, AvData shall provide
Customer's Satellite Capacity in accordance with, and Customer shall be bound
by, the terms and conditions set forth below:

A.        "SATELLITE SERVICES TERM":

1.        "Commencement Date":  12:00 a.m. (Eastern Time) on August 1, 1996.

2.        "Termination Date": 11:59 p.m. (Eastern Time) on July 31, 2001 unless
          earlier terminated pursuant to this SSS Agreement.

B.        CUSTOMER'S SATELLITE CAPACITY: AvData shall provide satellite 
transponder capacity for the VNI Network according to the terms hereof. From the
Commencement Date through the Termination Date Customer's Satellite Capacity
shall be provided through Ku-band transponder capacity leased by AvData on
Satellite(s) selected by AvData in its sole discretion subject to approval by
Customer, which shall not be 


A & R Satellite                AvData Systems, Inc.
Services Supplemental             Proprietary
                                       1     

<PAGE>   2
                              AMENDED AND RESTATED
                   SATELLITE SERVICES SUPPLEMENTAL AGREEMENT


unreasonably withheld; provided, however, that at least one of the Satellites
(i.e. GE-1) provides coverage for all fifty states of the USA.

C.   PRICE: Customer shall pay to AvData a monthly satellite capacity payment 
for Customer's Satellite Capacity, in accordance with Section J below and
Schedule 1 attached hereto, except that payment for the first month of any
increased usage shall be due and payable on the date the Customer uses any
increase in satellite capacity, with a corresponding increase in subsequent
monthly satellite capacity payments.

D.   DEPOSIT: The parties acknowledge that Customer paid AvData a non-refundable
satellite services deposit on the date of execution of the Existing SSS
Agreement, which has been retained by AvData in consideration for the
modifications contained therein. PageMart acknowledges that it is not entitled
to a set-off against any financial obligations with respect to such payment.


E.   CERTAIN DEFINITIONS

1.   "Affiliates" shall mean, with respect to any Person, any other Person
     directly or indirectly controlling, controlled by or under common control
     (i.e., the power to direct affairs by reason of ownership of voting stock,
     by contract or otherwise) with such Person and any member, director,
     officer or employee of such Person.

2.   "FCC" shall mean the Federal Communications Commission or any successor
     organization.

3.   "Satellite(s)" shall mean GE-1 and Galaxy IV and such other geo-stationary
     communications satellite or satellites through which AvData will provide
     Customer's Satellite Capacity.

4.   "Laws" shall mean all international, federal, state, local and other laws,
     rules and other regulations, including without limitation, those issued by
     the FCC.

5.   "Person" shall mean any person or entity, whether an individual, trustee,
     corporation, general partnership, limited partnership, trust,
     unincorporated organization, business association, firm, joint venture,
     governmental agency or authority, or otherwise.

6.   "Transponder(s)" shall mean a component of the Satellite(s) which, for a
     particular frequency band, receives, amplifies, translates frequency and
     retransmits radio signals. Each Transponder contains one traveling wave
     tube amplifier (a "TWTA"). Transponder shall also mean, for purposes of
     this definition, any replacement or alternate components thereof.

7.   "Satellite Capacity Failure" shall mean the failure of AvData to provide
     Customer's aggregate Satellite Capacity on a Satellite(s) (due to a
     Satellite failure). Determination that a Satellite Capacity Failure has
     occurred shall be made by AvData in its sole discretion.

8.   "Usage" or "Use" shall refer to radio transmission to, or utilization of,
     the Satellite(s) for the VNI Network.

9.   "Satellite Operators" shall mean the owner(s) of the Satellite(s)
     specifically authorized by the FCC to operate the Satellite(s) and through
     whom AvData makes available the satellite capacity required for the VNI
     Network.

10.  "Primary Hub" shall mean the Equipment at AvData's primary hub location in
     Atlanta, Georgia which will be used to access Customer's Satellite
     Capacity to run the VNI Network.

11.  "Alternate Hub" shall mean the equipment PageMart sets up at a site to be
     determined which will be used to access Customer's Satellite Capacity to
     run the VNI Network for load sharing with, or failure of the Primary Hub.

12.  "Customer's Satellite Capacity" shall mean the satellite capacity to be
     provided hereunder to Customer (expressed as SCUs or High Power SCUs)
     during the Satellite Services Term, as more 
     
                                  
A & R Satellite                AvData Systems, Inc.
Services Supplemental             Proprietary
                                       2
<PAGE>   3
                              AMENDED AND RESTATED
                   SATELLITE SERVICES SUPPLEMENTAL AGREEMENT


     particularly described in Paragraph J.2. hereof. In addition, if PageMart
     requests additional satellite capacity as described in Schedule 1
     attached hereto, subject to availability of such satellite capacity, such
     additional satellite capacity shall be included upon commencement of
     service for such satellite capacity.

13.  "Equipment" shall mean the Very Small Aperture satellite Terminals (VSATs)
     and associated hub hardware and remote site hardware including embedded
     software provided by AvData under the Master Agreement.

14.  "Satellite Capacity Unit" or "SCU" - One SCU equals 800 kHz of bandwidth,
     which is normally configured as one (1) 128 Kbps outbound channel and two
     (2) 64 Kbps inbound channels. Using standard power levels and BPSK
     modulation, the percentage of available bandwidth in the transponder that
     is utilized by a SCU is equal to the percentage of the power available in
     the transponder utilized by that SCU.

15.  "High Power SCU" - One High Power SCU consumes twice the satellite
     capacity of one standard power SCU. Using high power levels and BPSK
     modulation, the percentage of available power in the transponder that is
     utilized by a High Power SCU is equal to two (2) times the percentage of
     available bandwidth in the transponder that is utilized by a SCU. A High
     Power SCU has a power density of not less than 9 dBW/4KHz and requires
     authorization from the Federal Communications Commission (FCC).

16.  "VNI" or "VNI Network" shall mean the VSAT network infrastructure
     consisting of the Equipment, and software provided by AvData under the
     Master Agreement.




F.       CERTAIN UNDERSTANDINGS

         1. Ownership of Transponders. Customer understands and agrees that the
Satellite Operators are the FCC-authorized operator of the Satellites . Neither
this SSS Agreement nor Customer's Satellite Capacity shall, or shall be deemed
to, convey title or any other ownership interest to Customer in or to any
Satellite, any Transponder or any part thereof. Customer acknowledges and
agrees (i) that nothing contained in this SSS Agreement shall prevent any sale,
mortgage, or encumbrance of any Satellite or any Transponder thereof by the
owner, (ii) that Customer's Satellite Capacity is provided on a right to use
basis (with Equipment and services provided by AvData under the Master
Agreement) and is not being sold to Customer, (iii) that neither any
Transponder nor any Satellite, nor any right to use thereof nor any interest of
any type therein, shall be subject to any claim, prior, subsequent or
otherwise, of Customer or its creditors as a result of this SSS Agreement, and
(iv) that, as to any Transponder, the rights of Customer under this SSS
Agreement will be subject and subordinate to the rights of any purchaser
purchasing such Transponder and leasing it back to the Satellite Operator
pursuant to a sale and leaseback transaction. Notwithstanding the foregoing,
AvData shall use reasonable efforts to provide that the foregoing restrictions
shall not impact or interfere with Customer's use of Customer's Satellite
Capacity as provided for herein.

         2. Control of Satellite. Customer understands and agrees that the
Satellite Operator(s) shall control and provide for the operation of the
Satellite(s).

         3. Communication with Satellite. All communications with the
Satellite(s) will be provided through Equipment controlled by AvData at either
the Primary Hub or Alternate Hub; provided, however, upon the prior written
request of Customer, AvData shall use its reasonable efforts to obtain the
consent of each Satellite Operator to permit Customer to exercise control of
the Equipment at the Alternate Hub, and upon obtaining such consent(s),
Customer shall have the right to make communications with the Satellite(s)
through Equipment controlled by Customer or its nominee at the Alternate Hub.



A & R Satellite                AvData Systems, Inc.
Services Supplemental             Proprietary
                                       3
<PAGE>   4
                              AMENDED AND RESTATED
                   SATELLITE SERVICES SUPPLEMENTAL AGREEMENT


G.       CONTINUITY OF SERVICE

         1. Preemption/Interruption of Service. Customer recognizes and agrees
with respect to each Satellite that for "Technical or Safety Reason(s)", which
shall include, but shall not be limited to, (1) the protection of the overall
health or performance of the Satellite or its Transponders; (2) the prevention
of interference or cross-talk; (3) the protection of public safety; or (4)
compliance with an order from the FCC or other governmental authorities - and
the existence of which the Satellite Operator shall determine in its sole
discretion - the Satellite Operator may take the following "Action(s)": (i)
preempt or interfere with Customer's Use of any Transponder or other component
of the Satellite, (ii) reassign TWTAs to different Transponders on the
Satellite, or (iii) reassign the frequency assignment of Customer's Satellite
Capacity. Customer acknowledges and agrees that an Action by Satellite Operator
may result in the preemption or interruption of the Use of Customer's Satellite
Capacity. AvData shall notify Customer as soon as reasonably practical after
receipt by AvData of oral or written notice from the Satellite Operator
concerning an Action and shall use reasonable efforts to cause the Satellite
Operator to schedule and conduct such Action so as to minimize the Satellite
Operator disruption of Customer's Use of Customer's Satellite Capacity.
Customer acknowledges and agrees that if such preemption or interruption
occurs, then Customer shall cooperate with and assist AvData and the Satellite
Operator during such periods and Customer's sole remedies shall be the
termination of this SSS Agreement or reduction in Customer's Satellite Capacity
pursuant to Paragraph K herein.

         2. Provision of Continuing Service. In the event of a Satellite
Capacity Failure, AvData shall use its best efforts to cause the Satellite
Operator to provide Customer's Satellite Capacity using spare Transponder
capacity on the Satellite, if available, or if such spare capacity is
unavailable, then by using an alternate Transponder on the Satellite of the
same polarity, if available. The availability of such spare or alternate
Transponder on the Satellite, on a permanent or temporary basis, shall be
determined by the Satellite Operator in its sole discretion. The foregoing
notwithstanding, Customer's sole remedies for any preemption or interruption of
Use shall be the termination of this SSS Agreement or reduction in Customer's
Satellite Capacity pursuant to Paragraph K herein.

H.       CUSTOMER'S OBLIGATIONS

         1. Compliance With SSS Agreement and Laws. During the Satellite
Services Term, Customer shall comply with the terms of this SSS Agreement and
shall be responsible for complying with, and shall comply with all Laws
applicable to it regarding the operation and Use of the Satellites and the
Transponders, or Use of Customer's Satellite Capacity. Customer shall be
permitted to use Customer's Satellite Capacity for any business unit,
subsidiary, Strategic Alliance Partner or customer of PageMart subject to the
approval of AvData, which shall not be unreasonably withheld, provided,
however, operation of the Equipment provided under the Master Agreement or any
other equipment used to access Customer's Satellite Capacity, including
PageMart's Alternate Hub, must be in strict accordance with guidelines and
instructions provided by the Satellite Operator directly or through AvData.

I.       REMEDIES

         1.       LIMITATION OF LIABILITY

         a. ANY AND ALL EXPRESS AND IMPLIED WARRANTIES INCLUDING, BUT NOT
LIMITED TO, WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PURPOSE OR USE,
ARE EXPRESSLY EXCLUDED AND DISCLAIMED BY AVDATA. CUSTOMER EXPRESSLY AGREES THAT
AVDATA'S SOLE OBLIGATIONS AND CUSTOMER'S EXCLUSIVE REMEDIES FOR ANY CAUSE
WHATSOEVER (INCLUDING, WITHOUT LIMITATION, LIABILITY ARISING FROM NEGLIGENCE)
ARISING OUT OF OR RELATING TO THIS SSS AGREEMENT AND/OR THE TRANSACTIONS
CONTEMPLATED HEREBY AND THEREBY ARE LIMITED TO TERMINATION OF THIS SSS
AGREEMENT FOR THE REASONS DESCRIBED IN PARAGRAPH G ABOVE, AND ALL OTHER
REMEDIES OF ANY KIND ARE EXPRESSLY EXCLUDED.


A & R Satellite                AvData Systems, Inc.
Services Supplemental             Proprietary
                                       4
<PAGE>   5
                              AMENDED AND RESTATED
                   SATELLITE SERVICES SUPPLEMENTAL AGREEMENT


         b. IN NO EVENT SHALL AVDATA BE LIABLE FOR ANY INCIDENTAL OR
CONSEQUENTIAL DAMAGES, WHETHER FORESEEABLE OR NOT, OCCASIONED BY ANY DEFECT IN
CUSTOMER'S SATELLITE CAPACITY, FAILURE OF THE CUSTOMER'S SATELLITE CAPACITY TO
PERFORM OR ANY OTHER CAUSE WHATSOEVER. AVDATA MAKES NO WARRANTY, EXPRESS OR
IMPLIED, TO ANY OTHER PERSON CONCERNING CUSTOMER'S SATELLITE CAPACITY AND
CUSTOMER SHALL INDEMNIFY AVDATA FROM ANY CLAIMS MADE UNDER ANY WARRANTY OR
REPRESENTATION BY CUSTOMER TO ANY THIRD PARTY.


2.       Indemnification.

         Customer shall indemnify and save AvData and the Satellite Operators
harmless from all liability to Customer disclaimed by AvData, as specified
above, to the extent such liability arises in connection with the provision by
AvData or the Satellite Operators of facilities and/or Customer's Satellite
Capacity or use of Customer's Satellite Capacity pursuant to this SSS Agreement
provided, however, Customer shall not be obligated to indemnify AvData from
such liability to the extent such liability arises from the willful misconduct
or gross negligence of AvData.

J.       PAYMENTS TO AVDATA

         1.       Payment.

         a. Unless otherwise provided, any sum due AvData for the provision of
Customer's Satellite Capacity shall be invoiced and payable in advance on the
first day of each month.

         b. If any payment of any sum due from Customer is not received by
AvData within thirty (30) days after such payment is due, then such overdue
amount shall be subject to a delinquency charge at the rate of interest equal
to one and one-half percent (1 1/2%) per month, from the date such overdue
amount was actually due until the date it is actually received by AvData.

         c. Customer's obligations to make the monthly satellite capacity
payments provided by Paragraph C above and J(2) below shall be absolute and
unconditional and shall not be affected by any circumstances, including,
without limitation, any setoff, counterclaim, recoupment, defense or other
right which Customer may have against AvData or anyone else for any reason
whatsoever.

         d. The charges specified herein do not include any amounts for sales,
use, property, privilege, license, excise or similar taxes, fees or assessments
which may be levied by any governmental agency on this SSS Agreement, the
services provided or the payments made hereunder. Any such taxes or charges
shall be paid directly by Customer to the taxing authority, if legally
permitted. Otherwise, if required to be paid by AvData, the amount shall be
reimbursed to AvData by the Customer. Upon request, the Customer shall provide
AvData with tax exemption certificates, if applicable, or evidence of tax
payments, if made by Customer.

         2.       Required Satellite Capacity.

                  a. Commencing August 1, 1996, PageMart shall pay * per
month per Satellite Capacity Unit ("SCU") for satellite capacity, and shall 
increase the number of SCUs at the rate of * per month until * SCUs are paid 
for per month; provided, however, that commencing January 1, 1997, PageMart's 
required number of SCUs shall be reduced by * SCUs per month to * SCUs for the 
month of January, 1997, and the number of SCUs shall thereafter increase at the 
rate of * per month until a * required satellite capacity of * SCUs per month 
is reached, which shall be sustained for the balance of this SSS Agreement. 
Nothing contained in 


A & R Satellite                AvData Systems, Inc.
Services Supplemental             Proprietary
                                       5                         Rev. 12/10/97

*    CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN
     FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR
     CONFIDENTIAL TREATMENT.

<PAGE>   6
                              AMENDED AND RESTATED
                   SATELLITE SERVICES SUPPLEMENTAL AGREEMENT

this paragraph is intended to limit PageMart's ability to increase its number 
of SCUs at a rate faster than * per month. PageMart shall have the right to 
designate by written notice by PageMart that a portion of Customer's Satellite 
Capacity, not to exceed ten (10) SCUs (i.e. five (5) High Power SCUs), shall be 
provided as High Power SCUs. The provision of Customer's Satellite Capacity as 
High Power SCUs shall be subject to availability of High Power SCUs on the 
Satellite(s) and regulatory approval by the FCC. Upon receipt of such written 
notice, AvData shall pursue such regulatory approval on a "best efforts" basis, 
at PageMart's sole cost and expense. One (1) High Power SCU shall count as two 
(2) SCUs for the purpose of the above calculations.

         b. AvData shall use commercially reasonable efforts to resell any SCUs 
(in increments of 1/4 SCUs, or 200 kHz) that PageMart specifies in writing to 
AvData to resell; provided, however, that PageMart in such written notice 
irrevocably releases the SCUs for the duration of this SSS Agreement. PageMart 
shall be required to continue to pay for the SCUs until such time, if any, as 
AvData is able to resell the SCUs, as set forth below in Paragraph J(2)(c).

         c. AvData shall reduce PageMart's minimum monthly payments in the 
amount of $ * for each 1/4 SCU that AvData resells; provided, however, that 
AvData resells such SCU at a rate equal or greater than $ * per 1/4 SCU. AvData
shall be permitted to receive payments for such resold SCUs directly from the
purchaser.

         d. AvData further agrees not to purchase additional satellite capacity
for its own use from the time that PageMart gives AvData written notice of 
released satellite capacity pursuant to Paragraph J(2)(b) above if AvData 
determines, in its reasonable discretion, that AvData's satellite capacity 
needs can be reasonably satisfied from PageMart's released satellite capacity, 
and in such event AvData shall reduce PageMart's minimum monthly payments for 
satellite capacity by $ * for each 1/4 SCU that AvData uses.

K.       TERMINATION

         1. Events of Termination. This Agreement shall terminate automatically
upon the Termination Date, unless terminated earlier pursuant to one of the
following paragraphs:

         a. Termination for Satellite Capacity Failure. If a Satellite Capacity
Failure continues uninterrupted for more than ten (10) consecutive days, or
such other period is mutually agreed upon in writing by AvData and Customer,
then this Agreement may be immediately terminated by either party by written
notice to the other delivered on or before the thirtieth day after the calendar
day on which the Satellite Capacity Failure began; provided, however, that if
such Satellite Capacity Failure affects only one Satellite and a portion of
Customer's Satellite Capacity remains available from other Satellite(s), then
the right of termination shall apply only to Customer's Satellite Capacity
received hereunder from such failed Satellite and this SSS Agreement shall
continue in force with respect to the remaining portion of Customer's Satellite
Capacity. If so terminated, AvData shall refund to Customer the amount of any
prepaid monthly charges for the terminated capacity prorated from the date of
the Satellite Capacity Failure, and AvData shall have no other or further
liability to Customer.

         b. Cancellation for Non-Payment and Violations of Law. Notwithstanding
anything to the contrary and in addition to all other remedies AvData may have,
AvData may immediately cancel this Agreement and accelerate all remaining
payments due through the Satellite Services Term if Customer materially
breaches any provision of this Agreement, including for example (but without
limitation), (1) if Customer fails to pay when due any amounts due pursuant to
this Agreement within ten (10) days after AvData has delivered notice to
Customer of such non-payment, or (2) if Customer violates the provisions of
Paragraph H.1. ("Compliance with Laws"). Upon termination, pursuant to this
Paragraph K.1.b, AvData shall be entitled to transfer Customer's Satellite
Capacity immediately to whomever AvData sees fit, Customer shall not be
entitled to any equitable relief as a result thereof, and Customer's exclusive
remedy shall be limited to recovery of any payments made by it to AvData for
the period of time as to which it has 



A & R Satellite                AvData Systems, Inc.
Services Supplemental             Proprietary
                                       6

*    CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN
     SEPARATELY FILED WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR
     CONFIDENTIAL TREATMENT.
<PAGE>   7
                              AMENDED AND RESTATED
                   SATELLITE SERVICES SUPPLEMENTAL AGREEMENT



been canceled, without interest, less any claim AvData has against Customer by
reason of such Customer's default.

         c. Termination by Customer. In event that AvData fails to provide
Customer's Satellite Capacity to Customer as a result of the termination by a
Satellite Operator of the lease to AvData of Ku-Band satellite transponder
capacity due to a default by AvData, Customer, provided that Customer is not in
default hereunder, shall have the right to reduce Customer's Satellite Capacity
under this Agreement to the extent of the Customer's Satellite Capacity
received hereunder from such Satellite Operator if AvData fails to cure such
failure within thirty (30) days after receiving written notice of such failure
from Customer. If Customer's Satellite Capacity is so reduced, AvData shall (i)
refund to Customer the amount of any prepaid monthly charges for the terminated
Customer's Satellite Capacity prorated from the date AvData failed to provide
such Customer's Satellite Capacity and (ii) provide reasonable cooperation, at
Customer's request and expense, with any efforts by Customer to contract
directly with the Satellite Operator for such terminated Customer's Satellite
Capacity, and AvData shall have no other or further liability to Customer with
respect to such terminated Customer's Satellite Capacity.

         2. Continuation after Termination of Master Agreement. The parties
acknowledge and agree that this SSS Agreement is a separate, free standing
contract and is independent of the Master Agreement. This SSS Agreement, and
the parties rights and obligations hereunder, shall continue in full force and
effect notwithstanding any termination of or default by either party under the
Master Agreement.

L.       MISCELLANEOUS

         1. Headings. The Paragraph headings used in this SSS Agreement, except
where terms are specifically defined, are for reference and convenience only
and shall not enter into the interpretation hereof.

         2. Waiver. No delay or omission by either party to exercise any right
or power shall impair any such right or power or be construed to be a waiver
thereof. A waiver by either of the parties of any of the covenants, conditions
or agreements to be performed by the other or any breach thereof shall not be
construed to be a waiver of any succeeding breach thereof or of any other
covenant, condition or agreement herein contained.

         3. Severability. If, but only to the extent that, any provision of
this SSS Agreement is declared or found to be illegal, unenforceable or void,
then both parties shall be relieved of all obligations arising under such
provision, it being the intent and agreement of the parties that this SSS
Agreement shall be deemed amended by modifying such provision to the extent
necessary to make it legal and enforceable while preserving its intent. If that
is not possible, another provision that is legal and enforceable and achieves
substantially the same objective shall be substituted. If the remainder of this
SSS Agreement is not affected by such declaration or finding and is capable of
substantial performance then the remainder shall be enforced to the extent
permitted by law.

         4. Relationship of Parties. AvData is performing pursuant to this SSS
Agreement only as an independent contractor and nothing set forth in this SSS
Agreement shall be construed to create the relationship of principal and agent
between AvData and Customer. Neither AvData nor Customer shall act or attempt
to act or represent itself, directly or by implication, as an agent of the
other party or its Affiliates or in any manner assume or create, or attempt to
assume or create, any obligation on behalf of, or in the name of, the other
party or its Affiliates.

         5. Approvals and Authorizations. The obligations of the parties hereto
shall be subject to obtaining and maintaining all necessary regulatory and
other governmental approvals and authorizations. The parties agree to use their
respective and, where applicable, collective best reasonable efforts to obtain
promptly and maintain any such approvals.


A & R Satellite                AvData Systems, Inc.
Services Supplemental             Proprietary
                                      7
<PAGE>   8
                              AMENDED AND RESTATED
                   SATELLITE SERVICES SUPPLEMENTAL AGREEMENT


         6. Notices. In addition to such other requirements as may be set forth
herein, any notices hereunder by one party to the other party shall be given in
writing by personal delivery (or by recognized overnight delivery service) or
posted by certified mail return receipt requested, to the parties at the
following addresses:

         IF AVDATA, SEND TO:                         IF CUSTOMER, SEND TO:
         AvData Systems, Inc.                        PageMart Wireless, Inc.
         55 Marietta Street                          3333 Lee Parkway, Suite 100
         Atlanta, GA  30303                          Dallas, TX   75219

         Attn:  Judith H. Drobinski                  Attn:  James E. Freytag
         V.P. - Finance & Admin.                     Director of Network 
                                                     Implementation

Notices will be deemed to have been given hereunder when delivered (whether or
not accepted by the addressee).

         7. Confidentiality. Each party hereby agrees that all non-public,
confidential or proprietary information communicated to it by the other party
or its customers, whether before or after the Execution Date, shall be and was
received in strict confidence, shall be used only for purposes of this SSS
Agreement, and, for a period of five (5) years following the termination of
this SSS Agreement, shall not be disclosed by such party, its agents or
employees without the prior written consent of the other party, except as may
be necessary by reason of legal, accounting or regulatory requirements beyond
the reasonable control of the disclosing party. The obligations set forth in
this Section shall survive termination of this SSS Agreement.

         8. Force Majeure. The term "Force Majeure" shall include, but not be
limited to, fires or other casualties or accidents, acts of God, severe weather
conditions, sun outages, strikes or labor disputes, war or other violence, any
law, order, proclamation, regulation, ordinance, demand or requirement of any
governmental agency or any other act or condition whatsoever beyond the
reasonable control of the affected party. A party whose performance of its
obligations hereunder is prevented, restricted or interfered with by reason of
a Force Majeure condition shall be excused from such performance to the extent
of such Force Majeure condition so long as such party immediately continues
performance whenever and to the extent such causes are removed. Nothing in this
Section shall relieve Customer of its obligations to make payments to AvData in
accordance with Paragraphs C and J of this Satellite Services Supplemental
Agreement, except to the extent that AvData is relieved of its obligations to
make payments to the Satellite Operator by such Force Majeure condition.

         9. Applicable Law and Entire Agreement. THIS SSS AGREEMENT SHALL BE
INTERPRETED, CONSTRUED AND GOVERNED IN ACCORDANCE WITH THE LAWS OF THE STATE OF
GEORGIA. This SSS Agreement constitutes the entire agreement between the
parties, supersedes all previous understandings, commitments or representations
and is intended as the complete and exclusive statement of the terms of the
agreement between the parties concerning the subject matter hereof. This SSS
Agreement may not be amended or modified in any way, and none of its provisions
may be waived, except by a writing signed by each party hereto.

         10. Attorney's Fees. In the event of any dispute or controversy
arising hereunder, any court having jurisdiction in any such dispute or
controversy shall determine which of the parties is the prevailing party and
shall award to the prevailing party the reasonable fees and expenses of
counsel, experts and other court costs incurred in connection with such dispute
or controversy.

         11. No right of Transfer. Customer shall not, and shall not have the
right to, grant, sell, assign, encumber, permit the utilization of, license,
lease, or otherwise convey, directly or indirectly, in whole or in part
(individually, a "Transfer:"), Customer's Satellite Capacity, or any of its
rights under this SSS Agreement, to any other entity or person. Notwithstanding
the foregoing, Customer may assign its 



A & R Satellite                AvData Systems, Inc.
Services Supplemental             Proprietary
                                      8
<PAGE>   9
                              AMENDED AND RESTATED
                   SATELLITE SERVICES SUPPLEMENTAL AGREEMENT


Satellite Capacity, and its rights under this SSS Agreement, without AvData's
written consent, to any corporation, partnership or other entity which is
controlled by Customer and in which Customer has not less than fifty-one percent
(51%) of the ownership interest, provided that no such assignment shall relieve
Customer of any of its obligations hereunder.

         12. Successors and Assigns. Subject to Paragraph L.11 above, this SSS
Agreement shall be binding on and shall inure to the benefit of any successors
and assigns of the parties, provided that no assignment of this SSS Agreement
shall relieve either party hereto of its obligations to the other party. Any
purported assignment by either party not in compliance with the provisions of
this SSS Agreement shall be null and void and of no force and effect.


- -------------------------------------------------------------------------------



IN WITNESS WHEREOF, the parties hereto, each by a duly authorized officer, have
caused this Agreement to be executed as of the date written above.

<TABLE>
<CAPTION>


PAGEMART, INC.                                           AVDATA SYSTEMS, INC.

<S>                                                     <C>               <C>   
By:                                                      By:              Harold E. Cowan 
                 ------------------------------------                     ------------------------------------

Title:                                                   Title:           Vice President Account Management 
                 ------------------------------------                     ------------------------------------

Date:                                                    Date:            December 18, 1997 
                 ------------------------------------                     ------------------------------------

Signed:           /s/ ILLEGIBLE                          Signed:          /s/ HAROLD E COWAN 
                 ------------------------------------                     ------------------------------------


</TABLE>

A & R Satellite                AvData Systems, Inc.
Services Supplemental             Proprietary
                                       9
<PAGE>   10
                              AMENDED AND RESTATED
                   SATELLITE SERVICES SUPPLEMENTAL AGREEMENT



                                   SCHEDULE 1
                           MONTHLY RECURRING CHARGES

<TABLE>
<CAPTION>
                                     Unit                       Extended
                                    Price        Qty.*            Price
                                    -----        -----          --------

<S>                                   <C>          <C>             <C>
Satellite Capacity Units*             *            *               $ *
</TABLE>

CONDITIONS TO PRICING

Satellite Capacity Unit charges will begin with * on August 1, 1996 and increase
by * until January 1, 1997, when PageMart's required number of SCUs shall be *
SCUs * for the month of January, 1997, and the number of SCUs shall thereafter *
until a * required satellite capacity * SCUs * is reached, which shall be
sustained for the balance of the SSS Agreement; provided, however, that
PageMart's SCU required capacity shall be immediately * in the event AvData *
any additional capacity as set forth in Paragraph (J)(2) of the SSS Agreement.

PageMart may * the number of SCUs and payments at a rate * SCU *. Additionally,
one (1) High Power SCU shall count as two (2) SCUs.

SATELLITES

As of the Execution Date, AvData has commitments with Satellite Operators to
provide up to * of the SCUs on Galaxy IV and up to * of the SCUs on GE-1.

*  ADDITIONAL SATELLITE CAPACITY

AvData will provide additional satellite capacity when requested by PageMart
subject to satellite capacity availability and price at the time PageMart
requests this service.

*  CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN
   FILED WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR CONFIDENTIAL
   TREATMENT.

                              AvData Systems, Inc.
                                  PROPRIETARY
                                       10

A & R Satellite Services Supplement                                Rev. 12/10/97

<PAGE>   1





                                                                   EXHIBIT 10.22





                                RESALE AGREEMENT

                                    BETWEEN

                         GTE COMMUNICATIONS CORPORATION

                                      AND

                            PAGEMART WIRELESS, INC.
<PAGE>   2
                                                   TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                                                   PAGE
<S>           <C>                                                                 <C>
1.            TERM                                                                   1
2.            DEFINITIONS                                                            1
3.            LICENSE                                                                2
4.            INDEPENDENT PARTIES                                                    2
5.            SCOPE                                                                  3
6.            LICENSOR RESPONSIBILITIES                                              3
7.            RESELLER RESPONSIBILITIES                                              5
8.            PERFORMANCE STANDARDS                                                  5
9.            PERFORMANCE MEASUREMENTS                                               6
10.           SERVICE COMMITMENT                                                     6
11.           PUBLIC REGULATION                                                      7
12.           PRICING                                                                8
13.           BILLING AND COLLECTIONS                                                9
14.           TERMS OF PAYMENT                                                       9
15.           WARRANTY                                                              10
16            RIGHT TO AUDIT                                                        10
17.           PRECEDENCE OF DOCUMENTS                                               10
18.           USE OF CONFIDENTIAL INFORMATION                                       11
19.           PUBLICITY                                                             12
20.           COMPLIANCE WITH LAWS                                                  12
21.           FORCE MAJEURE                                                         12
22.           LIABILITY                                                             13
23.           ASSIGNMENT                                                            15
24.           TAXES                                                                 15
25.           RECORDS                                                               15
</TABLE>





<PAGE>   3
<TABLE>
<S>           <C>                                                                 <C>
26.           RIGHT OF ACCESS                                                       16
27.           TERMINATION                                                           16
28.           DISPUTE RESOLUTION                                                    17
29.           NOTICES                                                               18
30.           NONWAIVER                                                             19
31.           SEVERABILITY                                                          19
32.           SECTION HEADINGS                                                      19
33.           SURVIVAL OF OBLIGATIONS                                               20
34.           CHOICE OF LAW                                                         20
35.           ENTIRE AGREEMENT                                                      20
              SIGNATURES                                                            20
              EXHIBIT A. - PRICING                                                  21
              EXHIBIT B. - PERFORMANCE REQUIREMENTS                                 22
              EXHIBIT C. - REPAIR REPORTING &
                                  ESCALATION PROCEDURES                             23
              EXHIBIT D. - NETWORK REPORTS CRITERIA                                 24
</TABLE>





<PAGE>   4
                                RESALE AGREEMENT


This Agreement is made as of December 12, 1997, by and between PageMart
Wireless, Inc., a Delaware corporation, with offices for the purpose of this
Agreement located at 3333 Lee Parkway, Suite 100, Dallas, Texas 75219
(hereinafter referred to as "LICENSOR") and GTE Communications Corporation, a
Delaware corporation, with offices located at 5221 North O'Connor Boulevard,
14th Floor, Irving, Texas 75039 (hereinafter referred to as "RESELLER").

WHEREAS, LICENSOR provides paging, voice messaging, and related messaging
services (hereinafter referred to as "SERVICES"); and

WHEREAS, RESELLER desires to contract with LICENSOR to resell such SERVICES
and, in connection therewith, to receive blocks of Personal Identification
Numbers (hereinafter referred to as "PINs") and Direct Inward Dialing numbers
(hereinafter referred to as "DIDs") that provide individual access to
LICENSOR's system and SERVICES, for resale to members of the general public;

THEREFORE, in consideration of the mutual promises and covenants contained
herein, the parties agree as follows:

1.     TERM

       This Agreement shall be effective on the date written above and shall
       continue in effect thereafter for a period of thirty-six (36) months
       (hereinafter the "Term") unless terminated or modified by either party in
       accordance with the provisions of this Agreement.  This Agreement shall
       be automatically terminated unless renewed by RESELLER by written notice
       to LICENSOR not less than thirty (30) days prior to the end of the Term.
       At the end of each twelve (12) month period of the Term either party
       shall have the option to request review of the Agreement terms and
       adjustment of such terms as are mutually agreed upon by the parties.
       Unless mutually agreed otherwise, the Agreement shall remain in force as
       written until the end of the Term.

2.     DEFINITIONS

       (a)    CAP Code - The numeric code that identifies and is unique to each
              pager placed in service on LICENSOR's Paging System.

       (b)    DID - A local telephone number assigned by LICENSOR to identify a
              specific pager on the LICENSOR's network.

       (c)    Equipment - Pagers and related message receiving devices.

       (d)    Paging Terminal - A paging switch that processes paging calls.





                                                                          Page 1
<PAGE>   5
       (e)    Paging System - A telecommunications and radio frequency(ies)
              network that provides paging and related messaging services
              throughout a specific geographic area.

       (f)    PIN - Personal Identification Number.  A specific number assigned
              by LICENSOR to identify a pager on the LICENSOR's network.  By
              entering the PIN into LICENSOR's computer via a touch-tone
              telephone, the respective pager is activated.

       (g)    SERVICES - paging, voice messaging, and related messaging
              services currently offered for resale by LICENSOR, including but
              not limited to such additional SERVICES as LICENSOR makes
              available in the retail or reseller market during the Term of
              this Agreement.   Notwithstanding the foregoing, at such time
              LICENSOR makes available two-way messaging for resale, the
              parties shall mutually agree to the terms and conditions under
              which such services will be provided to RESELLER.

       (h)    Subscriber - A person or entity that is an end user of the
              LICENSOR's Paging System.

       (i)    Telephone Interconnect Charges - Those charges directly
              associated with acquiring Direct Inward Dial (DID) paging
              telephone numbers and transporting calls from the local exchange
              carrier.

3.     LICENSE

       (a)    LICENSOR grants RESELLER a non-exclusive license to resell
              LICENSOR's SERVICES subject to the terms of the Agreement and the
              rules, regulations and decisions of the Federal Communications
              Commission (hereinafter referred to as "the FCC").

       (b)    RESELLER is authorized to license its own sub-agents and
              affiliates for the marketing, promotion and resale of LICENSOR's
              SERVICES, provided that RESELLER shall be responsible for the
              observance by its sub-agents, affiliates, and sub-licensees of
              the terms and conditions of this Agreement.  RESELLER shall
              provide notice to LICENSOR of all sub-agents and affiliates
              authorized for promotion and resale on its behalf.

4.     INDEPENDENT PARTIES

       Each party is an independent contractor.  Except as provided in this
       Agreement, neither party shall have the right, power, or authority to
       act or to create any obligation, express or implied, on behalf of the
       other party.  Except as permitted pursuant to paragraph 3(b) above, all
       sales by RESELLER shall be in its own name and for its own account.





                                                                          Page 2
<PAGE>   6
5.     SCOPE

       (a)    This Agreement is non-exclusive and RESELLER is under no
              obligation to LICENSOR to resell any certain amount of SERVICES
              or refrain from selling or reselling competing SERVICES.

       (b)    LICENSOR hereby agrees to provide SERVICES in an efficient,
              economic, and timely fashion in accordance with the generally
              accepted commercial and business practices in the industry.

       (c)    This Agreement is solely between LICENSOR and RESELLER and is not
              intended to create rights in or obligations to any third party.

6.     LICENSOR RESPONSIBILITIES

       For the Term:

       (a)    LICENSOR shall establish a dedicated account manager for
              communications with RESELLER and shall actively manage the
              relationship between the parties.   The account manager will be
              the focal point for all issues and questions that may arise
              during this relationship and shall be available by pager at all
              times.  Escalation procedures have been defined by both the
              LICENSOR and RESELLER as outlined in Exhibit C.

       (b)    LICENSOR shall provide RESELLER's Subscribers with access to its
              Paging System to initiate and receive paging messages and shall
              use commercially reasonable good faith efforts to provide
              continuous network service in the geographical locations where
              LICENSOR is legally authorized and has the facilities to provide
              SERVICES.

       (c)    The SERVICES provided by LICENSOR for resale by RESELLER shall
              include but not be limited to those listed on Exhibit A hereto as
              amended by the parties from time to time.

       (d)    LICENSOR shall assign and coordinate all DID, CAP Code and, at
              RESELLER's option, toll free numbers in order to ensure the
              compatible initiation of SERVICES to RESELLER's Subscribers
              placed on LICENSOR's Paging System. LICENSOR shall provide at no
              charge, all required software, documentation and training to
              RESELLER to authorize and enable RESELLER to initiate and
              terminate SERVICES to RESELLER's customers as Subscribers on
              LICENSOR's Paging System.





                                                                          Page 3
<PAGE>   7
       (e)    Where permissible and technically feasible, LICENSOR shall work to
              support and enable RESELLER to move a Subscriber from LICENSOR to
              RESELLER without changing equipment.

       (f)    LICENSOR will provide sample collateral and marketing materials.
              This will include network manuals and features / options
              collateral.  RESELLER shall have the right to copy, modify,
              reproduce and change all collateral and use and distribute such
              collateral in modified or unmodified form without further consent
              of or payment to LICENSOR provided that RESELLER shall not omit
              or misstate any material fact contained in the collateral or
              marketing material, including without limitation, the
              specifications or functionality of the equipment, the SERVICES,
              or LICENSOR's network capability.  RESELLER will defend,
              indemnify and hold harmless LICENSOR from any claim, assertion,
              suit, demand or proceeding ("Claim"), to the extent that such
              Claim is caused by modification by RESELLER to, or use by
              RESELLER beyond that contemplated by this Agreement of,
              collateral, marketing materials or manuals provided by LICENSOR
              to RESELLER under this Section 6(f).

       (g)    At the request of RESELLER, LICENSOR shall provide RESELLER
              training for all SERVICES covered by the scope of this Agreement
              no less than ten (10) days, but not more than thirty (30) days
              prior to RESELLER's scheduled introduction of those SERVICES.

       (h)    LICENSOR shall provide and support on-line access to LICENSOR's
              administration system by which RESELLER may activate, deactivate,
              suspend, or terminate SERVICES to its Subscribers.

       (i)    LICENSOR shall provide, support and update its zip code coverage
              area database to reflect its Paging System coverage areas.

       (j)    LICENSOR shall use its commercially reasonable best efforts to
              provide at least ninety (90) days' prior written notice of new
              products and services offerings.

       (k)    LICENSOR shall use its commercially reasonable best efforts to
              provide at least ninety (90) days' notice of revisions to
              LICENSOR's administrative ordering system that may materially
              affect LICENSOR's ability to provide SERVICES or RESELLER's
              ability to initiate and terminate SERVICES to RESELLER's
              customers as Subscribers on LICENSOR's Paging System.

       (l)    If LICENSOR alters or revises transmission protocols, LICENSOR
              shall provide at least one hundred eighty (180) days' advance
              notice to RESELLER prior to the effective date of such proposed
              change.  If LICENSOR changes transmission protocols whereby
              previously authorized Equipment is no longer authorized for
              additional users on LICENSOR's transmission system, except only
              to the extent prohibited by law, LICENSOR agrees to grandfather
              all of





                                                                          Page 4
<PAGE>   8
              RESELLER's existing Subscriber's Equipment for continued use on
              the LICENSOR's network until LICENSOR proposes a mutually
              acceptable transition plan for such grandfathered Subscribers'
              Equipment.  At the end of the one hundred eighty (180) days'
              notice period, RESELLER shall no longer sell or place into
              service under lease additional units of Equipment that is no
              longer authorized for additional users on LICENSOR's transmission
              system.

       (m)    LICENSOR shall assist and support RESELLER in integrating
              RESELLER'S billing and administration systems with LICENSOR's
              administration system to permit RESELLER to simplify and maximize
              its efficiency in reselling LICENSOR's SERVICES.

       (n)    LICENSOR shall provide repair services to RESELLER and RESELLER's
              Subscribers in accordance with the terms of Exhibit C to this
              Agreement.

       (o)    LICENSOR shall provide network reports in accordance with the
              terms in Exhibit D to this Agreement.

7.     RESELLER RESPONSIBILITIES

       (a)    RESELLER shall be solely responsible for providing all sales,
              Equipment and customer support services to its Subscribers.
              RESELLER further agrees that all Equipment provided to its
              Subscribers shall be compatible with the existing transmission
              system of LICENSOR. RESELLER further agrees that all Equipment
              provided to its Subscribers for use on LICENSOR'S transmission
              system shall utilize the industry standard of FLEX (TM) based
              protocols.

       (b)    RESELLER shall be solely responsible for all billings to and
              collections from its Subscribers, including but not limited to
              the sending of periodic bills, collection of amounts owed or past
              due, and the collection and return of all applicable taxes on
              such SERVICES or Equipment rentals.

       (c)    RESELLER shall provide and mail all announcements or notices
              required to be mailed to its Subscribers as required by any
              regulatory agency.

       (d)    RESELLER shall maintain and keep in good working order all
              Equipment sold or leased by RESELLER to its Subscribers pursuant
              to the terms of this Agreement, in accordance with all
              manufacturer's specifications and the provisions of the filed
              tariffs of LICENSOR.

8.       PERFORMANCE STANDARDS

         LICENSOR agrees to comply with the Performance Requirements
         encompassed in Exhibit B to this Agreement.  If LICENSOR fails to meet
         any of the Performance





                                                                          Page 5
<PAGE>   9
         Requirements (except to the extent such failure is caused by a Force
         Majeure event or an act or omission of RESELLER), RESELLER may provide
         written notice to LICENSOR regarding such failure and LICENSOR shall
         use its best efforts to comply with such Performance Requirements.  If
         LICENSOR fails to meet such Performance Requirements (except to the
         extent such failure is caused by a Force Majeure event or an act or
         omission of RESELLER) within thirty (30) days after RESELLER's notice,
         LICENSOR shall pay to RESELLER as liquidated damages and not as a
         penalty, an amount equal to * dollars ($ *) for each Performance
         Requirement LICENSOR failed to meet (counted on the basis of one
         failure per applicable measuring period for each Performance
         Requirement), it being agreed that RESELLER's damages would be
         impossible to ascertain and the amount indicated above is a reasonable
         estimate of same. If LICENSOR fails to meet such Performance
         Requirement (except to the extent such failure is caused by a Force
         Majeure event or an act or omission of RESELLER) within sixty (60) days
         after RESELLER's notice, or if LICENSOR fails to meet the same
         Performance Requirement (except to the extent such failure is caused by
         a Force Majeure event or an act or omission of RESELLER) four (4) times
         in any rolling twelve (12) month period, LICENSOR shall be in default
         under this Agreement. Imposition of liquidated damages pursuant to this
         paragraph shall be in lieu of any damages RESELLER may suffer by reason
         of any failure by LICENSOR to comply with the Performance Requirements,
         provided that RESELLER shall further be entitled to any other relief to
         which RESELLER would otherwise be entitled under Section 21 or 26 of
         this Agreement.

9.       PERFORMANCE MEASUREMENTS

         LICENSOR's performance shall be measured against the Performance
         Requirements of Exhibit B as reported by RESELLER's Performance
         Measurements Report Card.  RESELLER shall meet with LICENSOR within
         thirty (30) days of contract execution to present Report Card
         Performance Measurements.  The Report Card Performance Measurements
         will also reflect RESELLER's Performance Objectives, which may in many
         respects be more stringent than the contract requirements.  On a
         quarterly basis, RESELLER shall compile the performance data and
         publish the Performance Report on Vendor Effectiveness (PROVE) Report
         Card. LICENSOR shall provide written action plans for Performance
         Measurements that do not meet RESELLER's Performance Requirements
         Report Card.  Additional action plans shall be provided to RESELLER in
         conjunction with pre-scheduled meetings for all Report Card
         Performance Measurements not met on a quarterly basis.  The corrective
         action associated with the action plans shall be implemented within
         thirty (30) days, unless the parties otherwise agree.

10.      SERVICE COMMITMENT

         In the event a particular terminal or transmitter of LICENSOR's Paging
         System is inoperable for a period of twenty-four (24) hours or more,
         and RESELLER's customer is not able to receive SERVICES because of the
         outage and RESELLER issues a credit because of such outage, RESELLER
         agrees to provide an accounting of such credits to LICENSOR and
         LICENSOR agrees to credit RESELLER * period for each affected pager,
         for a maximum of * periods in any one month. RESELLER agrees to provide
         an accounting to LICENSOR of the number of pagers for which a credit 
         was issued by RESELLER and LICENSOR's credit to RESELLER shall appear 
         on RESELLER's invoice for the next regular billing cycle.

                                                                          Page 6


*    CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN
     FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR
     CONFIDENTIAL TREATMENT.
<PAGE>   10
11.      PUBLIC REGULATION

         (a)     It is understood that the ultimate control and responsibility
                 for the standard and quality of SERVICES required under the
                 provisions of and license issued by the FCC to LICENSOR shall
                 be retained, rest and remain the prerogative and obligation
                 solely of LICENSOR.  No provision of this Agreement shall be
                 construed as vesting in RESELLER any control whatsoever of the
                 radio communication facilities and operations of LICENSOR.  To
                 the extent any performance obligations assumed in this
                 Agreement exceed standards set by the FCC, paragraphs (b) or
                 (c) of this section shall not be construed to relieve LICENSOR
                 from the performance obligations assumed in this Agreement.

         (b)     This Agreement is subject to all of the terms and conditions
                 of LICENSOR's outstanding authorizations from the FCC and the
                 utility regulatory agencies in the states to which this
                 Agreement pertains, as such tariffs and authorizations are
                 presently in effect or as they may hereafter be revised.
                 Nothing in this Agreement shall be construed so as to impair
                 or diminish LICENSOR's control over the facilities of the
                 applicable stations.

         (c)     It shall be LICENSOR's obligation to obtain all federal, state
                 and local approvals that are required for LICENSOR's lawful
                 participation in this Agreement.

         (d)     This Agreement shall be terminated, amended, revised, or
                 supplemented immediately if required by applicable law or
                 regulation; provided, that RESELLER shall have the option to
                 terminate this Agreement on thirty (30) days' written notice
                 to LICENSOR, given after receipt of written notice from
                 LICENSOR of such a required amendment, revision or supplement,
                 that RESELLER determines will have a material impact on its
                 products, services or business.

         (e)     The imposition by federal, state or local regulatory agencies
                 of any amendments, revisions, deletions or supplements to this
                 Agreement shall thereby relieve LICENSOR and RESELLER of any
                 obligations or liabilities to the other resulting from the
                 provisions of this Agreement which were ordered amended,
                 revised, deleted or supplemented; provided, that RESELLER
                 shall have the option to terminate this Agreement on thirty
                 (30) days' written notice to LICENSOR, given after receipt of
                 written notice from LICENSOR of such a required amendment





                                                                          Page 7
<PAGE>   11
               revision or supplement, that RESELLER determines will have a
               material impact on its products, services or business.

12.      PRICING

         (a)   RESELLER hereby agrees to pay LICENSOR the charges and fees
               for SERVICES specified in Exhibit A in accordance with the
               terms and conditions contained herein.

         (b)   The charges and fees specified in Exhibit A shall commence at
               the time RESELLER activates each particular number in LICENSOR's
               Paging System.  Such charges shall continue for each number for
               a minimum of thirty (30) days, and thereafter until the number
               in question is canceled or otherwise disconnected in accordance
               with the provisions herein.  When a number is activated in the
               middle of a month, the applicable rate will be prorated to the
               first of the following month so that all subsequent bills will
               be tendered thereafter on a monthly basis.

         (c)   With the exception of Telephone Interconnect Charge changes, the
               specified prices in Exhibit A shall remain firm for the first
               twelve (12) months of this Agreement.  Thereafter, each party
               may propose price adjustments once in each successive twelve
               (12) month period of the Term by giving written notice to the
               other at least ninety (90) days prior to the proposed effective
               date of the new pricing. However, no price adjustment will be
               effective unless mutually agreed by the parties in writing.
               LICENSOR shall honor all prices for SERVICES for which orders
               have been issued prior to the effective date of such adjustment.

         (d)   Notwithstanding the foregoing or anything to the contrary
               contained in this Agreement or any schedule or exhibit attached
               hereto, LICENSOR shall have the right, where permitted by
               applicable law or regulation, to change the fees charged for
               SERVICES at any time upon thirty (30) days prior notice to
               RESELLER in the event LICENSOR deems such change necessary to
               comply with applicable law or regulation, whether state or
               federal, or in the event LICENSOR determines that a change in
               applicable law or regulation substantially affects LICENSOR's
               operating costs.  If RESELLER deems such requested changes
               unreasonable or undesirable, RESELLER may terminate this
               Agreement upon thirty (30) days written notice to LICENSOR.

         (e)   LICENSOR warrants and represents that the prices for SERVICES
               hereunder are and will remain during the Term of this Agreement
               no less favorable than those extended to any other similarly
               situated RESELLER of LICENSOR of the same or substantially
               equivalent or like classification as RESELLER for the same volume
               levels achieved by RESELLER for the same or like SERVICES on
               substantially similar terms and conditions. 

                                                                          Page 8

<PAGE>   12
         (f)   Where allowable by the state regulating authority, the prices
               charged by RESELLER to its Subscribers for all SERVICES shall be
               determined solely by RESELLER.  In states where tariff rates are
               required, RESELLER may operate under its own tariff or the
               tariff of LICENSOR.

13.      BILLING AND COLLECTIONS

         (a)   LICENSOR will provide RESELLER a single tape for monthly
               recurring charges and excess usage in an agreed format.
               LICENSOR shall provide usage data to RESELLER no later than ten
               (10) days after the first day following the month such charges
               were incurred.  Invoice and detail shall be received no later
               than fifteen (15) days after the first day of the month
               following the month such charges were incurred.  LICENSOR shall
               endeavor to reduce the interval for provision of invoices and
               detail to no more than five (5) days as soon as feasible for
               RESELLER data.

         (b)   The invoice and associated detail must be generated and supplied
               in an acceptable electronic format as predetermined by both
               parties.

         (c)   Both parties shall collaboratively develop and establish
               mutually acceptable protocol and system requirements to
               accommodate electronic data transfer between their respective
               computer systems.

         (d)   RESELLER shall not recognize nor remit payment for Usage
               sensitive charges incurred sixty (60) or more days preceding bill
               date.

         (e)   LICENSOR shall provide the data required by RESELLER's billing
               department to credit RESELLER for network outages.  This credit
               process shall be an automated process and shall not require a
               credit request from RESELLER.

14.      TERMS OF PAYMENT

         Payment shall be due thirty-one (31) days after the date of LICENSOR's
         invoice, or the receipt of LICENSOR's invoice, whichever is later. The
         invoice rendering date and dates showing the time period covered by
         the invoice must be printed on the invoice.  Amounts disputed by
         RESELLER shall be withheld from the monthly remittance and LICENSOR
         shall be notified in writing of such disputed amounts and shall be
         provided with documentation supporting such disputed amounts within
         thirty-one (31) days of RESELLER's receipt of the invoice containing
         such disputed charges. If the parties are unable to resolve the
         dispute within thirty (30) days following LICENSOR's receipt of
         RESELLER's written notice of disputed charges and supporting
         documentation, the dispute shall at the request of either party that
         wishes to pursue the matter be submitted for resolution via the terms
         of Section 28 of this Agreement.  RESELLER shall only be assessed late
         charges for amounts held in dispute that are determined pursuant to
         the resolution provisions of Section 28 to have been disputed in bad
         faith.





                                                                          Page 9

<PAGE>   13
         Such late charges shall be assessed at the rate of one and one-half
         percent (1 1/2%) per month on the disputed amount outstanding.

15.      WARRANTY

         LICENSOR represents and warrants that its Paging System and any
         software provided to RESELLER for use in association with the SERVICES
         is capable of correctly processing, providing, and receiving date data
         as well as properly exchanging accurate date data with all products
         (for example, hardware, software and firmware) with which this Paging
         System and software is designed to be used and will not malfunction or
         cease to function due to an inability to correctly process such date
         data, including but not limited to transitions to or from the years
         1999 and 2000.

16.      RIGHT TO AUDIT

         Upon written notice to LICENSOR, RESELLER or its authorized
         representative, shall have the right to commence an audit of
         LICENSOR's books, records and operations pertaining to its performance
         of this Agreement. The scope of the audit may include, but is not
         limited to:  financial records, documentation and procedures, and
         input and output processing. Within thirty (30) days of such notice,
         the Parties will determine the location, date and specific information
         to be audited. No more than two audits may be conducted in any
         calendar year.  Audits will be conducted during normal business hours
         and shall be of such records, accounts and internal processes and
         procedures that contain information concerning any reports provided by
         LICENSOR or any charges payable under the terms of this Agreement
         including, but not limited to, billing logic and associated systems.
         The cost of the audit shall be borne by RESELLER if the amount of
         overcharges discovered but not previously reimbursed to RESELLER does
         not exceed five percent (5%) of net payments to LICENSOR over the
         previous twelve (12) months.  However, the cost of such audit shall be
         borne by LICENSOR if the amount of overcharges discovered but not
         previously reimbursed to RESELLER exceeds five percent (5%) of
         RESELLER's net payments to LICENSOR over the previous twelve (12)
         months. All auditors shall be subject to the confidentiality
         requirements of both parties established herein.

17.      PRECEDENCE OF DOCUMENTS

         All orders for SERVICES placed by RESELLER upon LICENSOR during the
         Term hereof shall be subject to and governed by the provisions
         contained herein.  The terms and conditions of this written Agreement
         shall control over any conflicting or inconsistent terms and
         conditions contained in any order placed with LICENSOR by RESELLER and
         in any order confirmation issued by LICENSOR to RESELLER.





                                                                         Page 10
<PAGE>   14
18.      USE OF CONFIDENTIAL INFORMATION

         (a)     Any specifications, drawings, sketches, models, samples,
                 tools, computer programs, technical information, or
                 confidential business information or data disclosed by one
                 party to the other hereunder, if in writing and clearly marked
                 as "confidential" or with words of clearly similar meaning, at
                 the time of disclosure, or if oral and designated as
                 confidential at the time of disclosure as well as summarized
                 in a writing indicating the confidential nature of the same
                 within twenty (20) days of disclosure (hereinafter called
                 "Confidential Information"), shall remain the property of the
                 supplier of such Information.  All copies of such Confidential
                 Information in written, graphic or other tangible form shall
                 be returned to the discloser upon request,

         (b)     For the purposes of this Agreement, Confidential Information
                 shall not include any information that:

                 (1)      was previously known to the recipient;

                 (2)      is subsequently received by the recipient free from
                          any obligation to keep it confidential;

                 (3)      is independently developed by the receiving party; or

                 (4)      was or is subsequently made public by the supplier or
                          a third party, without breach of any obligation of
                          confidentiality.

                 All Confidential Information shall be treated as confidential
                 and not disclosed by the recipient, and shall unless the prior
                 written consent of the disclosing party is obtained be used by
                 the recipient only in connection with fulfilling the
                 obligations of the recipient that arise pursuant to this
                 Agreement, Confidential Information shall only be distributed
                 to those employees of the recipient who have a need to know.

         (c)     Each party shall treat the other's Confidential Information in
                 accordance with a standard of care reasonably calculated to
                 prevent inadvertent or accidental disclosure.  Nothing herein
                 shall be construed as waiving the right of any party to
                 require the other party to execute a written nondisclosure
                 agreement, containing reasonable additional terms and
                 conditions, prior to the supplying of particular Confidential
                 Information from time to time.

         (d)     LICENSOR shall take such measures as necessary to ensure that
                 all information regarding RESELLER's customers and potential
                 customers received by LICENSOR from RESELLER is not made
                 available to or used by LICENSOR, its affiliates, employees or
                 agents for any purposes other than to support RESELLER. This
                 shall not, however, be construed to prohibit





                                                                         Page 11
<PAGE>   15
                 LICENSOR from competing with RESELLER, provided it does not
                 use RESELLER provided information to do so.

19.      PUBLICITY

         The parties agree to submit to one another for written approval all
         advertising, sales promotion, press releases and other publicity
         matters relating to the SERVICES furnished or the SERVICES performed
         by them pursuant to this Agreement whereby their respective names or
         marks are mentioned or language from which the connection of said
         names or marks therewith may be inferred or implied, and the parties
         further agree not to publish or use such advertising, sales
         promotions, press releases, or publicity matters without such prior
         written approval.  Such approval shall not be unreasonably withheld or
         delayed by either party.

20.      COMPLIANCE WITH LAWS

         The parties hereto shall comply with the provisions of all applicable
         federal, state, county and local laws, ordinances, regulations and
         codes (including procurement of required permits or certificates) in
         their respective performance hereunder, including, but not limited to,
         the standards promulgated under the Occupational Safety and Health
         Act, Executive Order 11246, as amended, relative to Equal Employment
         Opportunity, Section 503 of the Vocational Rehabilitation Act of 1973,
         as amended, and Section 402 of the Vietnam Era Veterans Readjustment
         Assistance Act of 1974 and all applicable laws, orders and regulations
         concerning immigrants and non-discrimination in the employment of
         minorities, females, veterans and the handicapped.  Each party hereby
         agrees to indemnify the other party, and defend the same against, any
         claims, loss or damage sustained because of its noncompliance
         hereunder.

21.      FORCE MAJEURE

         Neither LICENSOR nor RESELLER shall be responsible for any delay or
         failure in performance of any part of this Agreement to the extent
         that such delay or failure is caused by an event beyond its control,
         which may include, but not be limited to, fire, flood, explosion, war,
         strike, embargo, government requirement, civil or military authority,
         and acts of God ("Condition(s)").  If any such Condition(s) occur(s),
         the party delayed or unable to perform shall promptly give notice to
         the other party and, if such Condition(s) remains at the end of thirty
         (30) days thereafter or for more than thirty (30) days within any
         ninety (90) day period, the party affected by the other's delay or
         inability to perform may elect to suspend this Agreement or part
         thereof, and resume performance of this Agreement once the
         Condition(s) cease(s), with an option in the affected party to extend
         the period of this Agreement up to the length of time the Condition(s)
         endured.  If such Conditions continue for more than thirty (30) days,
         or for more than thirty (30) days within any ninety (90) day period,
         either party shall have the right to terminate this Agreement upon
         written notice to the other party.





                                                                         Page 12
<PAGE>   16
  22.    LIABILITY

         (a)     Notwithstanding anything to the contrary herein, each party
                 shall indemnify and save the other harmless the other from any
                 loss or damages (including reasonable attorney's fees)
                 incurred by the other because of claims, suits, or demands
                 based on personal injury or death or property damage or third
                 party claims, suits or demands of any kind, to the extent such
                 loss or damage is caused by or results from the negligent or
                 willful acts or omissions of the other or its employees or
                 agents.  The indemnifying party shall receive the full
                 opportunity and authority to assume the defense of and
                 settlement of such suits.  The indemnified party may
                 participate in the indemnifying party's defense of such matter
                 through its own counsel at its own expense if it so elects.
                 The indemnified party agrees to furnish to the indemnifying
                 party upon request all information and reasonable assistance
                 available to the indemnified party for defense against any
                 such suit, claim, or demand.

         (b)     LICENSOR will defend, indemnify and hold harmless RESELLER,
                 and RESELLER's employees, agents and customers, from any
                 claim, assertion, suit, demand or proceeding ("Claim")
                 alleging that the SERVICES, or any materials related thereto
                 (including collateral, marketing materials and manuals
                 referred to in Section 6(f) herein except to the extent
                 RESELLER is obligated to indemnify LICENSOR pursuant to 6(f)),
                 provided by LICENSOR under this Agreement, or use or
                 possession thereof, constitute, cause or result in direct or
                 contributory infringement or inducement of infringement,
                 misappropriation, misuse of any patent, copyright, trademark,
                 trade secret or other intellectual property or proprietary
                 right, including any right of privacy or publicity, of any
                 person or entity.  LICENSOR shall pay all damages,
                 settlements, judgments, fines, penalties and costs (including
                 court costs and reasonable fees of attorneys) incurred in
                 connection with the Claim.  RESELLER will promptly notify
                 LICENSOR of the Claim and, at LICENSOR's expense, provide
                 LICENSOR with all requested information and assistance
                 reasonably necessary to the defense of the Claim.

         (c)     LICENSOR makes no warranty, either express or implied
                 concerning its facilities, products, or SERVICES, including,
                 without limitation, warranties of merchantability or fitness
                 for a particular purpose.  RESELLER acknowledges that service
                 interruptions in the telecommunications industry frequently
                 are due to circumstances beyond a carrier's control and are
                 difficult to assess as to cause or resulting damages.  The
                 parties agree that LICENSOR shall not be liable beyond the
                 actual and direct loss to RESELLER arising out of any
                 mistakes, omissions, interruptions, delays, errors, or defects
                 in transmission of pages on LICENSOR's Paging System.  Except
                 as otherwise provided in Sections 8 and 10, LICENSOR's
                 liability in each instance shall not exceed an amount
                 equivalent to the proportionate charge to RESELLER for the
                 period of the disruption of





                                                                         Page 13
<PAGE>   17
                 SERVICES or the amount of five hundred dollars ($500),
                 whichever is more.  LICENSOR shall not be liable for any act
                 or omission of any other entity furnishing services to
                 RESELLER.  Except with respect to a breach of the provisions
                 of Section 18, neither party shall be liable for any special,
                 incidental or other consequential damage or losses, including
                 without limitation lost profits, or for loss of stored,
                 transmitted or recorded data, even if it has been advised of
                 the possibility of such damages, nor shall either party be
                 liable for any such damages due to the fault or negligence of
                 the other party or its employees, agents, or representatives.
                 With regard to breaches of Section 18, the liability of the
                 breaching party shall not exceed ten thousand dollars
                 ($10,000.00) per breach unless the breach is found to be
                 knowing and intentional.

         (d)     All work performed under this Agreement by any party shall be
                 performed as an independent contractor and not as an agent of
                 any other party.  Persons furnished by the respective parties
                 shall be solely the employees or agents of the furnishing
                 party, and shall be under the sole and exclusive direction and
                 control of such party.  They shall not be considered employees
                 of the other party for any purpose.  Each party shall be
                 responsible for compliance with all laws, rules and
                 regulations involving its employees or agents, including (but
                 not limited to) employment of labor, hours of labor, health
                 and safety, working conditions and payment of wages.  Each
                 party shall also be responsible, for payment of taxes,
                 including federal, state, and municipal taxes, chargeable or
                 assessed with respect to its employees or agents, such as
                 social security, unemployment, workers' compensation,
                 disability insurance and federal and state income tax
                 withholding. 

        (d)      RESELLER and LICENSOR each agree to maintain during the 
                 term hereof all insurance and/or bonds required by law or this
                 Agreement, including, but not limited to (1) Workers'
                 Compensation and related insurance as prescribed by applicable
                 law; (2) employer's liability insurance with limits of at least
                 $100,000 for each occurrence, and (3) comprehensive general
                 liability insurance including products liability, and, if the
                 use of motor vehicles is required, comprehensive motor vehicle
                 liability insurance, each with limits of at least $500,000 for
                 combined single limit for bodily injury, including death,
                 and/or property damage. RESELLER and LICENSOR each shall cause
                 the other to be included as an Additional Insured under their
                 respective policies and RESELLER's and LICENSOR's appropriate
                 coverage under such policies shall be primary. RESELLER and
                 LICENSOR each shall furnish certificates or evidence of the
                 foregoing insurance indicating the amount and nature of such
                 coverage, the expiration date of each policy, and stating that
                 no material change or cancellation of any such policy shall be
                 effective unless thirty (30) days advanced written notice is
                 given to the party named as an Additional Insured.
                 Notwithstanding the above, LICENSOR and RESELLER shall each
                 have the option, where permitted by law, to self-insure any or
                 all of the foregoing risks.





                                                                         Page 14
<PAGE>   18
  23.    ASSIGNMENT

         (a)     Except as otherwise provided herein, the rights and
                 obligations of the parties hereunder shall neither be assigned
                 nor delegated without the prior written consent of the other
                 party, provided that either may assign or delegate its
                 respective rights and obligations hereunder, in whole or in
                 part, to any parent, subsidiary or affiliate of RESELLER or
                 LICENSOR that was a parent, subsidiary or affiliate at the
                 time of execution of this Agreement upon notice and without
                 the consent of the other party.  Such assignment shall not
                 diminish any rights or duties that LICENSOR or RESELLER may
                 have had prior to the effective date of assignment.

         (b)     The limitation on assignment does not apply to an assignment
                 confined solely to moneys due or to become due under this
                 Agreement, provided that the assigning party gives the other
                 party to this Agreement thirty (30) days prior written notice
                 of such assignment.  An assignment of moneys shall be void to
                 the extent that it imposes upon RESELLER or LICENSOR
                 obligations to the assignee in addition to the payment of such
                 moneys, or to preclude RESELLER or LICENSOR from dealing
                 solely and directly with the other in all matters pertaining
                 hereto, including negotiation of amendments or settlement of
                 amounts due.  If RESELLER or LICENSOR makes such an
                 assignment, it is and shall remain responsible for payment
                 hereunder.

         (c)     Either party may transfer this Agreement as part of a merger
                 or upon the sale of all or substantially all of that party's
                 business on notice to the other party whose consent shall not
                 be required unless the purchaser is a direct competitor of the
                 party receiving the notice, in which case the party receiving
                 the notice shall have the option to terminate this Agreement
                 on ninety (90) days' notice.

24.      TAXES

         RESELLER shall be liable for and shall reimburse LICENSOR for actual
         payments of any retailers' excise taxes, state and local sales and use
         taxes, or any similar taxes as applicable, with respect to
         transactions under this Agreement.  Taxes payable by RESELLER shall be
         separately stated in LICENSOR's invoices and shall not be included In
         LICENSOR's prices.  RESELLER shall not be liable for any tax for which
         a valid exemption certificate acceptable to the applicable state or
         local taxing authorities is furnished by RESELLER to LICENSOR.

25.      RECORDS

         (a)     LICENSOR shall maintain complete and accurate records of all
                 amounts billable to and payments made by RESELLER hereunder,
                 in accordance with generally accepted accounting practices.
                 LICENSOR shall retain such records





                                                                         Page 15
<PAGE>   19
                 for a period of three (3) years from the date of rendering of
                 SERVICES covered by this Agreement.  LICENSOR agrees to
                 provide to RESELLER supporting documentation concerning any
                 disputed amount of invoice within thirty (30) days after
                 RESELLER provides written notification of the dispute to
                 LICENSOR along with RESELLER's documentation supporting any
                 disputed amount.  LICENSOR shall retain such records for three
                 (3) years from date of invoice.

         (b)     RESELLER's original Subscriber records shall be and remain the
                 property of RESELLER.  LICENSOR shall be entitled at
                 LICENSOR's expense during normal business hours to make copies
                 of such records directly relating to information verifying the
                 number of Subscribers or compliance by RESELLER to the terms
                 of this Agreement.

26.      RIGHT OF ACCESS

         LICENSOR and RESELLER shall each permit reasonable access during
         normal working hours to its facilities in connection with work
         hereunder.  No charge shall be made for such visits.  It is agreed
         that reasonable prior notification shall be given when access is
         required and that access is subject to compliance with the facility
         rules of conduct and security procedures of the visited property.

27.      TERMINATION

         (a)     RESELLER may terminate this Agreement with or without cause,
                 upon thirty (30) days' written notice to LICENSOR.
                 Termination shall not affect any order placed prior to the
                 date of termination,

         (b)     Either party may terminate this Agreement, effective
                 immediately, without liability for said termination, upon
                 written notice to the other party, if any of the following
                 events occur:

                 (1)      The other files a voluntary petition in bankruptcy;

                 (2)      The other is adjudged bankrupt;

                 (3)      A court assumes jurisdiction of the assets of the
                          other under a federal reorganization act;

                 (4)      A trustee or receiver is appointed by a court for all
                          or a substantial portion of the assets of the other;

                 (5)      The other becomes insolvent or suspends its business;

                 (6)      The other makes an assignment of its assets for the
                          benefit of its creditors, except as required in the
                          ordinary course of business;





                                                                         Page 16
<PAGE>   20
         (c)     Either party may immediately terminate this Agreement for a
                 material breach or default of any of the terms, conditions or
                 covenants of this Agreement by the other, provided that such
                 termination may be made only following the expiration of a
                 thirty (30) day period during which the other party has failed
                 to cure such breach after having been given written notice of
                 such breach.

         (d)     In the event of a material breach or default by LICENSOR,
                 provided that LICENSOR has failed to cure the same within
                 thirty (30) days of its receipt of RESELLER's written notice
                 of default, or if said default cannot be cured within a thirty
                 (30) day period, LICENSOR has failed to commence and
                 diligently pursue curing such a default, RESELLER shall be
                 under no obligation to continue to provide LICENSOR's SERVICES
                 to its Subscribers, and RESELLER shall have the right to
                 assign those Subscribers to another paging service.

28.      DISPUTE RESOLUTION

         (a)     The parties desire to resolve certain disputes, controversies
                 and claims arising out of this Agreement without litigation.
                 Accordingly, except in the case of (i) a suit, action or
                 proceeding to compel a party to comply with its obligations to
                 indemnify the other party pursuant to this Agreement or (ii) a
                 suit, action or proceeding to compel either party to comply
                 with the dispute resolution procedures set forth in this
                 Section 27, the parties agree to use the following alternative
                 procedure as their sole remedy with respect to any dispute,
                 controversy or claim arising out of or relating to this
                 Agreement or its breach.  The term "Arbitrable Dispute" means
                 any dispute, controversy or claim to be resolved in accordance
                 with the dispute resolution procedure specified in this
                 Section 27.

         (b)     At the written request of a party, each party shall appoint a
                 knowledgeable, responsible representative to meet and
                 negotiate in good faith to resolve any Arbitrable Dispute
                 arising under this Agreement.  The parties intend that these
                 negotiations be conducted by nonlawyer, business
                 representatives.  The discussions shall be left to the
                 discretion of the representatives.  Upon written agreement,
                 the representatives may utilize other alternative dispute
                 resolution procedures such as mediation to assist in the
                 negotiations.  Discussions and correspondence among the
                 representatives for purposes of these negotiations shall be
                 treated as confidential information developed for purposes of
                 settlement, shall be exempt from discovery and production, and
                 shall not be admissible in the arbitration described below or
                 in any lawsuit without the concurrence of all parties.
                 Documents identified in or provided with such communications,
                 which are not prepared for purposes of the negotiations, are
                 not so exempted and may, if otherwise admissible, be admitted
                 in evidence in the arbitration or lawsuit.





                                                                         Page 17
<PAGE>   21
         (c)     If the negotiations do not resolve the Arbitrable Dispute
                 within sixty (60) days of the initial written request, the
                 Arbitrable Dispute shall be submitted to binding arbitration
                 by a single arbitrator pursuant to the Commercial Arbitration
                 Rules of the American Arbitration Association.  A party may
                 demand such arbitration in accordance with the procedures set
                 out in those rules.  Discovery shall be controlled by the
                 arbitrator and shall be permitted to the extent set out in
                 this Section.  Each party may submit in writing to a party,
                 and that party shall so respond, to a maximum of any
                 combination of thirty-five (35) (none of which may have
                 subparts) of the following: interrogatories, demands to
                 produce documents and requests for admission.  Each party is
                 also entitled to take the oral deposition of one (1)
                 individual of another party.  Additional discovery may be
                 permitted upon mutual agreement of the parties.  The
                 arbitration hearing shall be commenced within sixty (60) days
                 of the demand for arbitration and the arbitration shall be
                 held in Dallas, Texas.  The arbitrator shall control the
                 scheduling so as to process the matter expeditiously.  The
                 parties may submit written briefs.  The arbitrator shall rule
                 on the Arbitrable Dispute by issuing a written opinion within
                 thirty (30) days after the close of hearings.  The times
                 specified in this Section may be extended upon mutual
                 agreement of the parties or by the arbitrator upon a showing
                 of good cause.  Judgment upon the award rendered by the
                 arbitrator may be entered in any court having jurisdiction.

         (d)     Each party shall bear its own cost of these procedures.  A
                 party seeking discovery shall reimburse the responding party
                 the cost of production of documents (to include search time
                 and reproduction time costs).  The parties shall equally share
                 the fees of the arbitration and the arbitrator.

29.      NOTICES

         Any notice or demand given under the terms of this Agreement or
         pursuant to statute shall be in writing and shall be given or made by
         telegram, facsimile transmission, certified or registered mail,
         express mail or other overnight delivery service or hand delivery,
         proper postage or other charges paid and addressed or directed to the
         respective parties as follows;

                                  To RESELLER:

         GTE Communications Corporation
         5221 N. O'Connor Boulevard
         East Tower, 14th Floor
         Irving, Texas 75039
         Attention: Director - Contract Management (HQL06C43)





                                                                         Page 18
<PAGE>   22
                              To RESELLER's LEGAL:

         GTE Communications Corporation
         5221 N. O'Connor Boulevard
         East Tower, 14th Floor
         Irving, Texas 75039
         Attention: Legal Department (HQL06B62)


                                  To LICENSOR:

         PageMart Wireless, Inc.
         3333 Lee Parkway
         Suite 100
         Dallas, Texas 75219
         Attention: Vice President - Strategic Alliance Business Unit

         Such notice or demand shall be deemed to have been given or made when
         actually received or the third business day following the day it is
         dispatched after being sent, whichever occurs first.

         The address for notice set out above may be changed at any time by
         giving thirty (30) days prior written notice in the manner above.

30.      NONWAIVER

         Either party's failure to enforce any of the provisions of this
         Agreement and/or any purchase order, or to exercise any option
         hereunder, shall in no way be construed as a waiver of such
         provisions, rights, or options, or in any way be deemed to affect the
         validity of this Agreement or any purchase order.

31.      SEVERABILITY

         Should any material part of this Agreement for any reason be declared
         invalid by order of any court or regulatory agency, the parties shall
         meet and determine whether such action shall not affect the validity
         of any remaining portion, which shall remain in force and effect as if
         this Agreement had been executed with the invalid portion eliminated,
         or shall require renegotiation or termination.

32.      SECTION HEADINGS

         The headings of the sections herein are inserted for convenience only
         and are not intended to affect the meaning or interpretation of this
         Agreement.





                                                                         Page 19
<PAGE>   23
33.      SURVIVAL OF OBLIGATIONS

         The respective obligations of LICENSOR and RESELLER under this
         Agreement which by their nature would continue beyond the termination,
         cancellation or expiration hereof, shall survive termination,
         cancellation or expiration hereof.

34.      CHOICE OF LAW

         The construction, interpretation and performance of this Agreement
         shall be governed by and construed in accordance with the domestic
         laws of the state of Texas.

35.      ENTIRE AGREEMENT

         This Agreement and the exhibits hereto constitute the entire agreement
         between LICENSOR and RESELLER.  No modifications shall be made to this
         Agreement unless in writing and signed by appropriate representatives
         of the parties.

IN WITNESS WHEREOF, the parties hereto have executed this Agreement through
their authorized corporate representatives.

GTE COMMUNICATIONS                              PAGEMART WIRELESS, INC.
CORPORATION                                   

By:      /s/ ROBERT E. STEWART for              By:     /s/ DOUGLAS S. GLEN
         Deb Covey                            
Name:    Robert E. Stewart                      Name:   Douglas S. Glen
Title:   AVP-Billing and Cost Mgmt.             Title:  Executive Vice President
Date:    12/30/97                               Date:   12/19/97





                                                                         Page 20
<PAGE>   24
                                   EXHIBIT A
                                    PRICING
<TABLE>
<CAPTION>
[1]  NUMERIC SERVICES

                         PER MO, PER UNIT            NETWORK        US 800/888      800/888
COVERAGE                 FLEX NETWORK RATE        OVERCALL LEVEL      CHARGE     OVERCALL LEVEL
- -----------------------------------------------------------------------------------------------
<S>                     <C>                       <C>               <C>          <C>
Local                         $ *                  >400 @ $ *          + $ *       >200 @ $ *
Numeric Roam USA              $ *                  >400 @ $ *          + $ *       >200 @ $ *
(Includes PR-VI-Bahamas)                                                                     
Numeric Roam International    $ *                  >400 @ $ *          + $ *       >200 @ $ *
(USA + all other coverage)    
Pick-A-City USA               $ *                  >400 @ $ *          + $ *       >200 @ $ *
Pick-A-City International     $ *                  >400 @ $ *          + $ *       >200 @ $ *
Statewide                     $ *                  >400 @ $ *          + $ *       >200 @ $ *
Regional                      $ *                  >200 @ $ *          + $ *       >200 @ $ *
Nationwide 48 states          $ *                  >200 @ $ *          + $ *       >200 @ $ *
Extended Nationwide           $ *                  >200 @ $ *          + $ *       >200 @ $ *
(48 states+AL-HI-PR-VI)
International                 N/A              use International Roam
(Extended NW+Can-Mex-Cntrl Am)
</TABLE>


NOTES:

(a)  GTECC and PageMart agree that the above aggregate pricing is reflective of 
GTECC utilizing PageMart as the "Preferred Network Provider" versus other 
similar paging network carriers for like paging services, coverages and 
related messaging services currently offered by PageMart.

(b)  Prices are for FLEX protocol pagers only.

(c)  International options require use of paging frequency 929.6625 Mhz only.

(d)  Numeric Roaming services include numeric retrieval.

(e)  All rates are per unit per month unless noted otherwise.

(f)  Services rates quoted above include aggregate overcall billing. Aggregate 
pricing refers to billing overcall charges only after an aggregate overcall 
threshold has been exceeded. The aggregate overcall threshold is the product of 
the numbers of GTECC subscribers and their respective overcall threshold. For 
example, the aggregate threshold for 500 local units in service is 200,000 
calls/month (500 X 400 calls). If total call count for this group of 500 pagers 
was 220,000 calls, then overcall charges incurred for that month would be *
(20,000 calls x $ * ). For numeric paging there are three thresholds subject to 
overcalls: (1.) Local, Roam, and Statewide; (2.) Regional; and (3.) Nationwide 
and Extended Nationwide. AGGREGATE BILLING IS NOT AVAILABLE FOR 800 OR 888 
SERVICE.

(g)  Aggregate pricing is contingent, upon GTECC selling/supporting industry 
standard overcall thresholds and rates in order to create penalties for 
overcall abusers.

(h)  Aggregate pricing is contingent upon GTECC customer usage profile not 
changing significantly from the current industry usage standards of 80 calls 
per month; should a change occur, the aggregate pricing may be revised to 
insure PageMart fair compensation.

(i)  PageMart 800/888 numbers will not accept toll-free calls that originate 
from pay phones. PageMart will permit GTE to accept calls originating from pay 
phones provided GTE agrees to pay for those calls on a per call basis.

*    CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN
     FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR
     CONFIDENTIAL TREATMENT.   



                                                                        Page A-1
<PAGE>   25
[2] ADDITIONAL NUMERIC SERVICES

<TABLE>
<CAPTION>
                  SERVICE                             RATES PER MONTH
- --------------------------------------------------------------------------------------
<S>                                          <C>
Generic Greeting                                           no charge

Custom Greeting                                           $*

Numeric Retrieval                                         $*

Second DID (US)                                           $*

800 / 888 Canadian Access                    $* (>200 calls, $* per call)

VoiceMail:

     Small Talk (5 mes., 20 sec., 12 hour)                $*
     Small Talk with US 800 / 888                         $*

     Standard (15 mes., 30 sec., 24 hour)                 $*
     Standard with US 800 / 888                           $*

     Executive (15 mes., 60 sec., 48 hour)                $*
     Executive with US 800 / 888                          $*

     VIP (15 mes., 120 sec., 48 hour)                     $*
     VIP with US 800 / 888                                $*

</TABLE>

ADDITIONAL TEXT SERVICES:

<TABLE>
<CAPTION>
                  SERVICE                                     RATE
- --------------------------------------------------------------------------------------
<S>                                                       <C>
Broadcast Services-Generic, for all subscribers           $* per month
</TABLE>


* CONFIDENTIAL MATERIAL HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN FILED 
  SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR CONFIDENTIAL 
  TREATMENT.



                                                                        Page A-2
<PAGE>   26
[3] TEXT SERVICES

<TABLE>
<CAPTION>

                              PER MO, PER UNIT         TEXT NETWORK        NUMERIC NET.        US 800/888        US 800/888
COVERAGE                     FLEX NETWORK RATE         OVERCALL LEVEL      OVERCALL LEVEL        CHARGE        OVERCALL LEVEL   
- --------------------------------------------------------------------------------------------------------------------------------
<S>                           <C>                      <C>                 <C>                 <C>             <C>
Local                         $    *                   >75 @ $ *           >400 @ $ *           + $ *           >200 @ $ *
Roam USA                      
(Includes PR-VI-Bahamas)      $    *                   >75 @ $ *           >400 @ $ *           + $ *           >200 @ $ *
Roam  International
(USA + all other coverage)    $    *                   >75 @ $ *           >400 @ $ *           + $ *           >200 @ $ *
Pick-A-City USA               $    *                   >75 @ $ *           >400 @ $ *           + $ *           >200 @ $ *
Pick-A-City International     $    *                   >75 @ $ *           >400 @ $ *           + $ *           >200 @ $ *
Statewide                     $    *                   >75 @ $ *           >400 @ $ *           + $ *           >200 @ $ *
Regional                      $    *                   >50 @ $ *           >200 @ $ *           + $ *           >200 @ $ *
Nationwide all 48 states      $    *                   >50 @ $ *           >200 @ $ *           + $ *           >200 @ $ *
Extended Nationwide           $    *                   >50 @ $ *           >200 @ $ *           + $ *           >200 @ $ *
(48 states+AL-HI-PR-VI)    
International                   N/A             use Roam International
(Extended NW+Can-Mex-Cntrl Am)
</TABLE>


NOTES:

(a)  GTECC and PageMart agree that the above pricing is reflective of GTECC
utilizing PageMart as the "Preferred Network Provider" versus other similar
paging network carriers for like paging services, coverages, and related
messaging services currently offered by PageMart.

(b)  All packages include 100 characters per message unless otherwise noted.

(c)  All rates are for FLEX protocol only pagers.

(d)  International options require equal level of US service and 929.6625 Mhz.

(e)  Roaming includes text message retrieval and numeric retrieval.

(f)  All rates are per unit, per month unless noted otherwise.

(g)  Service pricing for local, roam, and statewide levels only represent
aggregate billing. Aggregate billing refers to billing overcall charges only
after an aggregate overcall threshold has been exceeded. The aggregate overcall
threshold is the product of the numbers of GTECC subscribers and their
respective overcall threshold. For example, the aggregate threshold for 500
units in service is 37,500 calls/month (500 x 75 calls). If total call count for
this group of pagers was 42,500 calls, then overcall charges incurred for that
month would be $* (5,000 calls x $*). For text paging all Local, Roam, and
Statewide calls will be combined for aggregate computation. AGGREGATE BILLING
IS NOT AVAILABLE FOR 800 OR 888 SERVICE.

(h)  Aggregate pricing is contingent upon GTECC selling/supporting industry
standard overcall thresholds and rates in order to create penalties for
overcall abusers.

(i)  Aggregate pricing is contingent upon GTECC customer usage profile not
changing significantly from the current industry usage standards; if a change
should occur, the aggregate pricing may be revised to insure PageMart fairly
compensation.

(j)  If a GTECC subscriber originates more than 500 text messages in one month,
GTECC and PageMart will discuss the validity of the application and remove that
customer from aggregation on the basis that at such a high level, over 16 text
messages per day, PageMart is not fairly compensated.

(k)  PageMart 800/888 numbers will not accept toll-free calls that originate
from pay phones. PageMart will permit GTE to accept calls originating from pay
phones provided GTE agrees to pay for those calls on a per call basis.


*    CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN
     FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR
     CONFIDENTIAL TREATMENT.


                                                                        Page A-3
<PAGE>   27
[4] EQUIPMENT


PRODUCT NAME                       COST PER UNIT
- ------------------------------------------------
Motorola Pronto - Flex                  $ *
Motorola Bravo - Flex                   $ *
Motorola Ultra Express - Flex           $ *

Uniden FX 9400                          $ *
Uniden FLX 9050                         $ *

Motorola Wordline                       $ *
Motorola Advisor Gold                   $ *



NOTES:

(a) Prices include freight charges for standard UPS shipment in the continental
US based on bulk shipments of more than 50 units.

(b) Pagers do not have face labels.

(c) Batteries are included.

(d) Product has a 90 day manufacturer warranty.

(e) Shipments/prices are based on availability.

(f) All rates are per unit.

(g) GTECC is under no obligation to purchase equipment from PageMart.

 *  CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN
    FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR
    CONFIDENTIAL TREATMENT.

                                                                        Page A-4
<PAGE>   28
                                   EXHIBIT B
                                        
                            PERFORMANCE REQUIREMENTS


1.  PAGER ACTIVATION SYSTEM AVAILABILITY: Licensor's pager activation network
    server will be available 98% of the time, less any scheduled downtime,
    averaged over a 30 day period of time.

2.  MEAN TIME TO RESTORE: The mean time to restore all trouble tickets opened
    through the Licensor's Strategic Alliance Help Desk will be less than two
    hours.

3.  INITIAL NOTIFICATION: Licensor will provide initial notification for all
    activation system outages and all major network outages via Reseller's
    Network Management Center (800-500-8113) within 30 minutes of actual
    identification of outage during normal business hours M-F 7:30 a.m. until
    7:00 p.m. CST. All other weekday and weekend hours, Licensor agrees to
    notify Reseller's Network Management Center within two hours of actual
    identification of outage.

4.  STATUS NOTIFICATION: Licensor will provide Reseller status notification for
    all system outages/incidents via the Network Management Center
    (800-500-8113) every thirty (30) minutes until the reportable
    outage/incident is resolved unless otherwise agreed upon by Reseller.

5.  PLANNED OUTAGE NOTIFICATION: Licensor will provide notification to Reseller
    of all planned outages with the activation system and paging network no less
    than two business days prior to the planned outage that could place
    Reseller's Services at risk.

    Should emergency maintenance outage be necessary, Licensor shall use its
    commercially reasonable best effort to notify reseller via the Network
    Management Center (800-500-8113 or E-mail) of the outage existence.

6.  ROOT CAUSE ANALYSIS REPORT: For any major customer affecting
    incident(s)/outage(s) Licensor will provide an Initial Root Cause Analysis
    (RCA) Report(s) to Reseller within two business days.

    Final Root Cause Analysis (RCA) Reports will be provided by Licensor to
    Reseller via the Network Management Center within thirty (30) days of any
    reportable event, incident or outage.

    (A major incident/outage for RCA Reports is defined as any paging terminal
    failure in excess of two (2) hours, satellite and satellite up-link failure
    in excess of two (2) hours, any communications fiber or cable cut in excess
    of four (4) hours, transmitter down in excess of twenty four (24) hours and
    any activation and related equipment in excess of two (2) hours).



                                                                        Page B-1
<PAGE>   29
                                   EXHIBIT C
                                        
                    REPAIR REPORTING & ESCALATION PROCEDURES


1.  Licensor shall accept and document all troubles referred from Reseller on
    the Licensor's trouble reporting system.

2.  Licensor shall contact Reseller via telephone to verify trouble has been
    resolved prior to closing the trouble report. This mutual closing process
    shall take place between Licensor and Reseller within one hour of trouble
    resolution.

3.  Licensor shall provide escalated repair and trouble shooting assistance for 
    Reseller's Customer Service Management team for those incidents that are 
    not the business norm via the Licensor's Strategic Alliance Help Desk as 
    outlined below.

    MONDAY THROUGH FRIDAY DURING BUSINESS HOURS (7:30AM - 7:00PM (CT)):

    a.  Call Strategic Help Desk 800-260-2617. Leave a voice message, if you get
    voice mail. If it is an emergency, press zero (0) and the operator will page
    through the telephone public address system for a Strategic Alliance
    Representative. (available 1/98)

    b. If no response, call the Team's Supervisor, Glinda Freemon 214-765-3526

    c. If no response, call the emergency On Call pager at 888-260-9524

    d. If no response, call the Strategic Alliances Help Desk Manager Dyann
    Freeman at 214-765-3575.

    e. If no response, call the Director Phil Terry at 214-765-3398.

AFTER BUSINESS HOURS AND ON WEEKENDS:

    f. Call the Emergency "On Call" pager 888-260-9524.

    g. If no response in five minutes call the Numeric Number on the Emergency
    "On Call" pager at 214-322-4240 and enter your phone number with area code.

    h. If no response in five minutes page Glinda Freemon, Supervisor at
    800-864-8444 PIN 121-1157.

    j. If no response in five minutes page Dyann Freeman, Manager at
    800-864-8444 PIN 121-0580.




                                                                        Page C-1
<PAGE>   30
    j. If no response in five minutes page Phil Terry, Director at 800-219-4611,
       PIN 133-4686.

4.  During any major network outage or emergency, certain designated Reseller's
    management personnel may access the Licensor's Communication Center directly
    for immediate crisis reporting, assessments and updates. The Licensor's
    Communications Center may be reached directly at 800-864-5809 extension 3854
    the shift Supervisor will then be the Licensor's primary contact for inquiry
    handling. Direct access to the Licensor's Communications Center will be
    restricted to certain and specific Reseller's management personnel, through
    mutual consent, by both the Licensor and Reseller.



                                                                        Page C-2
<PAGE>   31
                                   EXHIBIT D
                                        
                            NETWORK REPORTS CRITERIA

The Licensor will provide the following confidential network and system reports 
to Reseller by the fifteenth (15) day of each month, following the previous 
month's performance. The report format may be modified from time to time by 
mutual consent to meet the Reseller's needs. Initially, the reports will be
sent to the Senior Manager - Vendor Management Wireless via Email.

     1.   DIAL UP MODEMS FOR ALPHA/TEXT SERVICE: Licensor will provide a P.02 
          grade of service for all Alpha/Text modem access. An exception report 
          will detail the areas not achieving this level of service with an 
          estimated time for resolution and/or repair.

     2.   TRUNKING BUSY HOUR: Licensor will provide a P.02 grade of service for 
          circuits into all paging terminals. An exception report will detail 
          areas not achieving this level of service with an estimated time for 
          resolution and/or repair.

     3.   TRANSMITTER OUTAGES: Licensor will provide an exception report 
          detailing each transmitter outage in excess of four (4) hours. This 
          report will include, but not limited to, name, location (city/state), 
          total downtime with dates.

     4.   TERMINAL OUTAGES: This report will list each paging terminal on the 
          Licensor's system that was out of service for greater than one (1) 
          minute. The report will include, but not limited to, name, 
          location (city/state), total downtime with dates.

     5.   REPEAT TROUBLE - TRANSMITTER: This report will list any Licensor 
          repeat paging transmitter that has occurred within the same thirty 
          (30) day period. The report will detail name and location of each 
          transmitter.

     6.   REPEAT TROUBLE - TERMINAL: This report will list any Licensor repeat 
          paging terminal that has occurred within the same thirty (30) day 
          period. The report will detail name and location of each terminal.

     7.   ACTIVATION SYSTEM ACCESS: This report will measure Licensor's 
          responsiveness of the "PRIME" administrative activation system. 
          Hourly tests will be conducted during the hours of 10:00am - 5:00pm 
          CST.

     8.   INTERNET GATEWAY TRAFFIC STATISTICS: This report will measure the 
          accessibility and reliability of the Licensor's InterNet gateway. The 
          report details will be jointly determined by both Reseller and 
          Licensor during the 1st Quarter, 1998.


                                                                        Page D-1
<PAGE>   32
     7.   BLOCKED CALLS: Licensor agrees to provide P.02 grade of service or 
          better for all paging customer calls placed into paging terminals.

     8.   PAGE DELAYS: Licensor agrees that paging transmission latency will 
          not exceed an average of 120 seconds per message averaged over a 24 
          hour period.

     9.   NETWORK RELIABILITY AND PERFORMANCE REPORTS: Licensor shall provide 
          to Reseller via the Network Management Center all required monthly 
          Network Reliability and Performance Reports by the fifteenth (15) day 
          of each month, following the previous month's performance. A listing 
          of these reports is contained in Exhibit D and is subject to change 
          by mutual consent.






                                                                        Page D-2

<PAGE>   1
                                                                   EXHIBIT 10.24



                               AGREEMENT BETWEEN
                             PAGEMART INCORPORATED
                                      AND
                     GTE COMMUNICATION SYSTEMS CORPORATION
                                   TO ASSUME
                                      AND
                                AMENDMENT NO. 2
                                       TO
                                RESALE AGREEMENT
                              NUMBER 999999-93-12
                                    BETWEEN
                             PAGEMART INCORPORATED
                                      AND
                            GTE SERVICE CORPORATION

ASSUMPTION

GTE Communication Systems Corporation, acting through its GTE Supply division,
for the benefit of itself and the affiliates enumerated in Exhibit D, with
offices at 700 Hidden Ridge, Irving, Texas 75038 ("RESELLER") assumes and
Pagemart Incorporated. with its principal offices located at 6688 North Central
Expressway, Suite 900, Dallas, Texas 75026 ("LICENSOR") accepts its assumption
of all rights and obligations of GTE SERVICE CORPORATION as RESELLER in said
Agreement Number 999999-93-12 as amended (Agreement).

AMENDMENT

THIS AMENDMENT NO. 2 to Resale Agreement Number 999999-93-12, between RESELLER
and LICENSOR shall be effective upon execution by both parties.

NOW, THEREFORE, the parties agree to the following changes for the mutual
benefit of both parties.

CHANGE NUMBER 1

Exhibit A, PRICING of the Agreement shall be replaced with Exhibit A, PRICING
attached hereto.

CHANGE NUMBER 2

In consideration of the renewal of Resale Agreement Number 999999-93-12
LICENSOR agrees to issue the credits and discounts in, and fulfill the other
commitments as detailed in Exhibit B, DISCOUNTS/CREDITS. By accepting the
discounts and credits listed in Exhibit B, RESELLER does not represent or
guarantee the ordering of any level or amount of Services from LICENSOR or any
peculiar status relative to other vendors.

CHANGE NUMBER 3

Exhibit C, AUTHORIZED EQUIPMENT attached hereto shall be added to the
Agreement.




                                                                    CONFIDENTIAL
<PAGE>   2
CHANGE NUMBER 4

The following shall be added as Section 32:

         32.     AUTHORIZED EQUIPMENT

                          (a)     RESELLER and its Subscribers shall only
                                  utilize the Equipment listed in Exhibit C,
                                  AUTHORIZED EQUIPMENT in connection with
                                  LICENSOR's Services. LICENSOR may revise
                                  Exhibit C from time to time upon delivery of
                                  written notice to RESELLER at least one
                                  hundred eighty (180) days prior to the
                                  effective date of such revision. If LICENSOR
                                  amends Exhibit C in such a manner whereby
                                  previously authorized Equipment is no longer
                                  authorized for use on LICENSOR's Paging
                                  System, LICENSOR agrees at its sole cost and
                                  expense to provide substitute authorized
                                  Equipment in exchange for the previously
                                  authorized Equipment then utilized by
                                  RESELLER's Subscribers.

                          (b)     All pagers previously sold by LICENSOR to
                                  RESELLER are included in this Agreement, as
                                  they all still work on this network.

CHANGE NUMBER 5

Exhibit D, GTE AFFILIATED ENTITIES attached hereto shall be added to the
Agreement.

CHANGE NUMBER 6

Exhibit E, REPORTS attached hereto shall be added to the Agreement and LICENSOR
agrees to provide such reports to RESELLER.

CHANGE NUMBER 7

The second line of Section 1. TERM shall be changed to read "thereafter until
October 31, 2000 unless terminated or modified by..."

CHANGE NUMBER 8

The following shall be added as Section 31.

         31.     SERVICE COMMITMENT

                 In the event a particular terminal or transmitter is inoperable
                 for a period of twenty-four (24) hours or more, and a RESELLER
                 Customer is not able to receive paging Services because of the
                 outage, LICENSOR agrees to credit RESELLER * period for each
                 affected pager, for a maximum of * hour periods in any one
                 month.

CHANGE NUMBER 9

Add the following to Section 6, LICENSOR RESPONSIBILITIES





                                       2                            CONFIDENTIAL

*    CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN
     FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR
     CONFIDENTIAL TREATMENT.
<PAGE>   3
                 (d)      LICENSOR agrees to provide the monthly reports
                          described in Exhibit E, attached hereto, to RESELLER.

                 (e)      LICENSOR shall assume the role of system coordinator
                          for all RESELLER'S terminals. This includes
                          monitoring these terminals for alarms, notifying
                          RESELLER of alarms, scheduling routine maintenance,
                          software upgrades and hardware upgrades.

                 (f)      LICENSOR is responsible for keeping RESELLER informed
                          of all necessary updates and maintenance to the
                          degree that it does not affect the RESELLER.

CHANGE NUMBER 10

Add the following to Section 7, RESELLER RESPONSIBILITIES

                 (g)      RESELLER is responsible for updating the contact list
                          of people who LICENSOR is to contact if an alarm
                          occurs or routine maintenance is required or upgrades
                          become necessary.

                 (h)      RESELLER is responsible for purchasing software,
                          hardware, and spare kits for each terminal owned by
                          RESELLER. RESELLER agrees to reimburse LICENSOR at
                          the rate of $100 per man hour (plus travel expenses)
                          for all software and hardware upgrades and other
                          maintenance that RESELLER approves LICENSOR to
                          perform on their behalf.

                 (i)      RESELLER will handle emergency maintenance for
                          service affecting outages on a case by case basis.

CHANGE NUMBER 11

Add the following to Section 10. BILLING

                 (b)      LICENSOR shall provide to RESELLER an overcalls
                          invoice by the 10th day of each month or RESELLER will
                          not be obligated to pay the overcall portion of that
                          invoice.

                 (c)      LICENSOR shall provide to RESELLER a detailed billing
                          statement for airtime services charge by the 15th day
                          of each month or RESELLER will be allowed to deduct *
                          from that particular statement and an additional *
                          will be deducted each month thereafter until statement
                          is received.

                 (d)      If the 15th day of the month falls on a weekend the
                          statement will be delivered to RESELLER by 12:00 noon
                          Central Standard Time on the next business day.

Except as specifically modified, amended or supplemented herein, all terms and
conditions of Resale Agreement Number 999999-93-12 and its Amendment One shall
remain in full force and effect between the parties.





                                       3                            CONFIDENTIAL

*    CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN
     FILED WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR CONFIDENTIAL
     TREATMENT.
<PAGE>   4
<TABLE>
<CAPTION>
RESELLER                                                    LICENSOR
<S>                                                         <C>
GTE COMMUNICATION SYSTEMS                                   PAGEMART INCORPORATED
CORPORATION

/s/ KEITH HENDERSHOT                                        /s/ DOUGLAS S. GLEN                                
- ---------------------------------------------               ---------------------------------------------------
(Signature of Authorized Agent)                             (Signature of Officer)

Keith Hendershot                                            Douglas S. Glen                                     
- ---------------------------------------------               --------------------------------------------------- 
(Printed Name of Officer)                                   (Printed Name of Officer)

Acting Group Manager - Contract Management                  Executive Vice President                           
- ---------------------------------------------               ---------------------------------------------------
(Title)                                                     (Title)

Date:  10-2-97                                              Date:   10-2-97                                   
      ---------------------------------------                     ---------------------------------------------
</TABLE>


                 APPROVED AS TO FORM AND LEGALITY
                 J.R. SEASTROM                     
                 ----------------------------------
                 Attorney, GTE Telephone Operations
                 Date:    09-30-97                 
                       ----------------------------









                                        4                           CONFIDENTIAL
<PAGE>   5
                                   EXHIBIT A
                                PRICING DOCUMENT
                                        
                          PRICE DOCUMENT ADDENDUM "A"
                   PRINTED 09/17/97, REPLACES 08/17/97 FORMAT
                               EFFECTIVE 10/01/97
                                PREPARED FOR GTE
                               ***CONFIDENTIAL***

[3.1] ADDITIONAL TEXT SERVICES

SERVICE                                                     RATE
- --------------------------------------------------------------------------------
Broadcast Services - Generic, for all subscribers           $900.00 per month


[3.0] NEIGHBOR CITY/PICK-A-CITY OPTIONS

                                         TYPE OF 
CITIES                                   COVERAGE
- -------------------------------------------------

Austin/San Antonio - Dallas             Neighbor
Austin/San Antonio - Dallas             Neighbor
Baltimore/Washington DC - Richmond      Neighbor
Chicago - Indianapolis                  Neighbor
El Paso - Albuquerque                   Neighbor
Houston - Dallas                        Neighbor
Little Rock - Memphis                   Neighbor
Memphis - Nashville                     Neighbor
Nashville - Birmingham                  Neighbor
Nashville - Atlanta                     Neighbor
Indianapolis - Elkart                   Neighbor
Chattanooga - Birmingham                Neighbor
Nashville - Louisville                  Neighbor
Nashville - Knoxville                   Neighbor
Indianapolis - South Bend               Neighbor
Louisville - Somerset, KY               Neighbor

PageMart shall have the right in its sole and absolute discretion, to change the
fees charged for Devices and/or Services at any time upon thirty (30) days prior
notice to Customer in the event PageMart deems such change necessary to comply
with applicable law or regulation, whether state or federal, or in the event
PageMart determines that a change in applicable law or regulation substantially
affects PageMart's operating costs.
<PAGE>   6
                                   EXHIBIT A
                                PRICING DOCUMENT
                                        
                   PRINTED 09/17/97, REPLACES 03/17/97 FORMAT
                               EFFECTIVE 10/01/97
                                PREPARED FOR GTE
                               ***CONFIDENTIAL***

[3.0] TEXT SERVICES

<TABLE>
<CAPTION>
                              PER MO, PER UNIT       TEXT NETWORK       NUMERIC NET.       US 800 /       US 800 / 888
COVERAGE                      FLEX NETWORK RATE     OVERCALL LEVEL     OVERCALL LEVEL     888 CHARGE     OVERCALL LEVEL
- -----------------------------------------------------------------------------------------------------------------------
<S>                           <C>                   <C>                <C>                <C>            <C>
Local - Tier I                      $ **              >100 @ $ *        >400 @ $ *           $ *           >200 @ $ *

Local - Tier II                     $ *               >100 @ $ *        >400 @ $ *           $ *           >200 @ $ *

Local - Tier III                    $ *               >100 @ $ *        >400 @ $ *           $ *           >200 @ $ *

Text Roaming
  US only                          +$ *               counts towards local coverage listed above

Text Roaming
  Canada*                          +$ *               counts towards local coverage listed above

Neighbor City US                   +$ *               counts towards local coverage listed above

Pick-A-City US                     +$ *               counts towards local coverage listed above

Pick-A-City Canada*                +$ *               counts towards local coverage listed above

Statewide                           $ *               >50 @ $ *         >400 @ $ *           $ *           >200 @ $ *

Region                              $ *               >50 @ $ *         >200 @ $ *           $ *           >200 @ $ *

Dual Region                         $ *               >50 @ $ *         >200 @ $ *           $ *           >200 @ $ *

Norpac                              $ *               >50 @ $ *         >400 @ $ *           $ *           >200 @ $ *

SF or LA plus
  Las Vegas                         $ *               >50 @ $ *         >400 @ $ *           $ *           >200 @ $ *

California State
  plus Las Vegas                    $ *               >50 @ $ *         >400 @ $ *           $ *           >200 @ $ *

Nationwide
  Continental US                    $ *               >50 @ $ *         >200 @ $ *           $ *           >200 @ $ *
  US plus Hawaii/AK                 $ *               >50 @ $ *         >200 @ $ *           $ *           >200 @ $ *
  Canadian Nationwide*             +$ *               counts towards nationwide coverage listed above
</TABLE>

Notes:
       (a)  All packages include 100 characters per message unless otherwise 
            noted.

       (b)  Tier I (LA / San Diego), Tier II (Hawaii), Tier III (All areas not 
            Tier I or Tier II).

       (c)  "(pocsag rate)" -- not applicable for new subscribers.
     
       (d)  All rates apply for TNPP as well as non-TNPP unless otherwise noted.

       (e)  "*" Canadian options require equal level of US service and 929.6625
            Mhz.

       (f)  All rates are per unit, per month unless noted otherwise.


*  CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN
   FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR
   CONFIDENTIAL TREATMENT.       
<PAGE>   7
                                   EXHIBIT A
                                PRICING DOCUMENT

                   PRINTED 09/17/97, REPLACES 03/17/97 FORMAT
                               EFFECTIVE 10/01/97
                                PREPARED FOR GTE
                               ***CONFIDENTIAL***

[1.2] ADDITIONAL NUMERIC SERVICES

<TABLE>
<CAPTION>
SERVICE                                       RATES PER MONTH
- ---------------------------------------------------------------------------------

<S>                                           <C>
Generic Greeting                              no charge

Custom Greeting                               $ *

Numeric Retrieval                             $ *

Second DID (US)                               $ *

800/888 Canadian Access                       $ * (>200 calls, $ * per call)

VoiceMail

       Small Talk (5 mes., 20 sec., 12 hour)  $ *
       Small Talk with US 800/888             $ *

       Standard (15 mes., 30 sec., 24 hour)   $ *
       Standard with US 800/888               $ *

       Executive (15 mes., 60 sec., 48 hour)  $ *
       Executive with US 800/888              $ *

       VIP (15 mes., 120 sec., 48 hour)       $ *
       VIP with US 800/888                    $ *
</TABLE>


PageMart shall have the right in its sole and absolute discretion, to change the
fees charged for Devices and/or Services at any time upon thirty (30) days prior
notice to Customer in the event PageMart deems such change necessary to comply
with applicable law or regulation, whether state or federal, or in the event
PageMart determines that a change in applicable law or regulation substantially
affects PageMart's operating costs.

* CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN FILED
  SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR CONFIDENTIAL
  TREATMENT.
<PAGE>   8
                                   EXHIBIT A
                                PRICING DOCUMENT

                   PRINTED 09/17/97, REPLACES 03/17/97 FORMAT
                               EFFECTIVE 10/01/97
                                PREPARED FOR GTE
                               ***CONFIDENTIAL***

[1.0] NUMERIC SERVICES

<TABLE>
<CAPTION>
                                  PER MO, PER UNIT              NETWORK           US 800/888              800/888
COVERAGE                         FLEX NETWORK RATE          OVERCALL LEVEL          CHARGE             OVERCALL LEVEL
- ---------------------------------------------------------------------------------------------------------------------

<S>                                   <C>                     <C>                    <C>                <C>
Local                                  $ *                    >400 @ $ *             $ *                >200 @ $ *

Local LA/SD                            $ *                    >400 @ $ *             $ *                >200 @ $ *

Numeric Roam
  US only                             +$ *                    counts towards local coverage listed above

Numeric Roam
  US plus Canada*                     +$ *                    counts towards local coverage listed above

Neighbor City US                      +$ *                    counts towards local coverage listed above

Pick-A-City US                        +$ *                    counts towards local coverage listed above

Pick-A-City Canada*                   +$ *                    counts towards local coverage listed above

Statewide                              $ *                    >400 @ $ *             $ *                >200 @ $ *

Region                                 $ *                    >200 @ $ *             $ *                >200 @ $ *

Dual Region                            $ *                    >200 @ $ *             $ *                >200 @ $ *

Norpac                                 $ *                    >400 @ $ *             $ *                >200 @ $ *

Seaboard Region                        $ *                    >400 @ $ *             $ *                >200 @ $ *

SF or LA plus
  Las Vegas                            $ *                    >400 @ $ *             $ *                >200 @ $ *

California State
  Plus Las Vegas                       $ *                    >400 @ $ *             $ *                >200 @ $ *

Nationwide
  Continental US                       $ *                    >200 @ $ *             $ *                >200 @ $ *
  US plus Hawaii/AK                    $ *                    >200 @ $ *             $ *                >200 @ $ *
  Canadian Nationwide*                +$ *                    counts towards nationwide coverage listed above
</TABLE>

Notes:
        (a) "(pocsag rate)"--not applicable for new subscribers.

        (b) All rates apply for TNPP as well as non-TNPP unless noted otherwise.

        (c) "*" Canadian options require equal level of US service and 929.6625
            MHz.

        (d) Numeric Roaming services include numeric retrieval.

        (e) All rates are per unit per month unless noted otherwise.

* CONFIDENTIAL INFORMATION HAS BEEN OMITTED. THE OMITTED MATERIAL HAS BEEN FILED
  SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR CONFIDENTIAL
  TREATMENT.
<PAGE>   9
                                   EXHIBIT B

                                DISCOUNTS/CREDITS


PageMart desires to offer the following commitments, both short and long term, 
to GTE Paging in an effort to restart sales momentum.

The following commitments represent a bottom line contribution of *

1.  MARKET DEVELOPMENT FUNDS (DISCOUNTS) - Credit issued on the preceding
    month's ending units in service by category. The purpose of MDF support
    funds is the promotion and growth of PageMart frequency sales. GTE has
    discretion on how to best utilize these credits for the above purpose. Proof
    of performance requested.

    Rate for Existing Accounts: $* credit per month per pager for local numeric 
    service and $* credit per month per pager for local alpha numeric services. 
    Term: September 1 through March 31, 1998 (seven months of credits).

    Rate for Net Additional Accounts: $* credit per month per pager for local 
    numeric service and $* credit per month per pager for local alpha numeric 
    services. Term: September 1 through March 31, 1998 (seven months of 
    credits).

    Estimated minimum seven month contribution: $*.

    These credits are in addition to the other marketing promotional projects 
    that we are committed to support. For example bundled package discounts and 
    specific sales channel promotions;

2.  ALPHA NUMERIC LOCAL TEXT MESSAGE COUNT INCREASED from 50 to 100 text 
    messages effective October 1, 1997.

3.  EXTEND 800/888 OVERALL DISCOUNT RATE OF $* PER CALL through March 31, 1998. 
    Estimated minimum seven month contribution: *.

4.  The credit towards a pocsag price reduction (from $* to $*, will FUND * up 
    TO $* OF THIRD PARTY HOST-TO-HOST DEVELOPMENT COSTS (or other alternatives 
    such as direct to terminal connection). This project could not only save 
    between 35,000 to 60,000 double data entry efforts performed to synchronize 
    PBMS with PRIME, but greatly improve the speed and reliability of 
    efficiency of operations.

    The $* pocsag price reduction will take effect October 1, 1997.

5.  Provide ON-LINE ACCESS to the PageMart network operations trouble ticket 
    system, with access to all open trouble tickets, before September 15, 1997.

6.  Establish a NETWORK OPERATIONS QUALITY REVIEW COMMITTEE that will include 
    GTE's and PageMart's management teams. This committee will develop and 
    implement a process to enhance service levels for network maintenance and 
    reliability and improve communications for all paging network operational 
    issues. PageMart and GTE will work together to implement processes and 
    procedures

*   CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN 
    FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR 
    CONFIDENTIAL TREATMENT.



                                      B-1                  CONFIDENTIAL
<PAGE>   10
    which reduce the turn-around time on open trouble tickets by 75%. Initial 
    meeting to be schedule before September 1, 1997. An agreement on what 
    process to implement will be agreed to by the members of the committee by 
    October 15, 1997, and implementation will begin by October 31, 1997.

7.  PageMart agrees that due to the network modifications made this year that 
    coverage has been affected at GTE Place. PageMart agrees to install a 
    transmitter and other equipment REQUIRED TO CORRECT THE affected coverage 
    at GTE Place.

8.  PageMart agrees to offer custom bundled packages at a reduced price for all 
    GTE Paging channels, as requested by Product Management.

9.  PageMart agrees to Re-Freq. all GTED's and GTE Directories pagers to work 
    on Frequency #2 in order to expedite a resolution for GTED's and GTE 
    Directories paging delay issues. This is CONDITIONAL upon acceptance of 
    this offer by GTE Paging. If GTE Paging wishes to upgrade the GTED's and/or 
    GTE Directories pagers to the new Advisor Elite pagers, PageMart agrees to 
    offer a credit equal to the cost of re-freqing the pagers toward the 
    purchase of the new units not to exceed $10 per pager.




                                      B-2                        CONFIDENTIAL
<PAGE>   11
                                   EXHIBIT C
                              AUTHORIZED EQUIPMENT

                               EFFECTIVE 10/01/97
                                PREPARED FOR GTE
                               ***CONFIDENTIAL***


[5.0]   EQUIPMENT

<TABLE>
<CAPTION>
PRODUCT NAME                      COST PER UNIT
- -----------------------------------------------
<S>                               <C>
Motorola Pronto - Flex            $ *
Motorola Bravo - Flex             $ *
Motorola Ultra Express - Flex     $ *

Uniden FX 9400                    $ *
Uniden FLX 9050                   $ *

Motorola Wordline                 $ *
Motorola Advisor Gold             $ *
</TABLE>


Equipment Notes:
         (a)    Prices include freight charges for standard UPS shipment in the 
                continental US based on bulk shipments of more than 50 units.

         (b)    Pagers do not have face labels unless noted otherwise.

         (c)    Batteries are included.

         (d)    Product has a 90 day manufacturer warranty.

         (e)    Shipments/prices are based on availability.

         (f)    All rates are per unit, per month unless noted otherwise.


*   CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN 
    FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR 
    CONFIDENTIAL TREATMENT.

<PAGE>   12

                                   EXHIBIT D

                            GTE AFFILIATED ENTITIES


TELEPHONE OPERATING COMPANIES
- -----------------------------

GTE Alaska Incorporated
GTE Arkansas Incorporated
GTE California Incorporated
GTE Florida Incorporated
   GTE Communications Corporation
   GTE Funding Incorporated
GTE Hawaiian Telephone Company Incorporated
   GTE Hawaiian Tel Insurance Company Incorporated
   GTE Hawaiian Tel International Incorporated 
   The Micronesian Telecommunications Corporation
     GTE Pacifica Incorporated
GTE Midwest Incorporated
GTE North Incorporated
   GTW Northwest Systems Incorporated
GTE Northwest Incorporated
   Gte West Coast Incorporated
GTE South Incorporated 
GTE Southwest Incorporated
Contel of California, Inc.
   Contel Advanced Systems, Inc.
Contel of Minnesota, Inc. d/b/a GTE Minnesota
Contel of the South, Inc. d/b/a GTE Systems of the South
Contel Service Corporation
Continental Telephone Business Systems, Inc.

GTE Anglo Holding Company Incorporated
   La Compagnie de Telephone Anglo-Canadienne/Anglo-Canadian Telephone Company
     BC TELECOM Inc.
     Quebec-Telephone
GTE London Limited (England)

GTE Holdings (Canada) Limited
   Compania Dominicana de Telefonos, C. por A. (Codetel)

GTE International Telephone Incorporated
   Codetel Computer Graphics Holdings B.V. (Netherlands)
   Informatica y Telecommunicaciones, C. por A. (Dominican Republic)

GTE International Telecommunications Incorporated
   GTE do Brasil Limitada
   GTE PCS International Incorporated
   GTE Venezuela Incorporated


                                      D-1                         CONFIDENTIAL
<PAGE>   13
                                   EXHIBIT D
                            GTE AFFILIATED ENTITIES

          VenWorld Telecom, C.A. (Venezuela)

GTE Investments Incorporated

GTE Customer Networks, Inc.

GTE Data Services Incorporated
GTE Data Services Holdings Mexico, S. de R.L. de C.V.
     GTE Data Services-Mexico, S.A. de C.V.
     GTEDS Data Services-Mexico, S.A. de C.V.
     GTE Data Services International Incorporated

GTE Intelligent Network Services Incorporated

GTE Main Street Incorporated

GTE Media Ventures Incorporated
     T.L. Robak, Inc.
     Apollo Cablevision, Inc.
ContelVision, Inc.

GTE Vantage Incorporated

GTE Information Services Incorporated
     GTE Card Services Incorporated




                                      D-2                          CONFIDENTIAL
<PAGE>   14
                                   EXHIBIT E

                                NETWORK REPORTS
Sample Format
- --------------------------------------------------------------------------------
Dial up modems for alpha service.

        Quantity Ports Available: 24
<TABLE>
<CAPTION>
                      Sun      Mon     Tues      Wed      Thurs     Fri     Sat

        <S>           <C>      <C>     <C>       <C>      <C>       <C>     <C> 
        Busy Hour     12pm     5pm     5pm       11am     5pm       5pm     9am
        Max ports     
        in use        5        12      12        13       12        17      8 
</TABLE>
- --------------------------------------------------------------------------------
Trunking Busy Hour

        Terminal Name: Anytown, USA

            Trunks Available: 24
<TABLE>
<CAPTION>
                      Sun      Mon     Tues      Wed      Thurs     Fri     Sat

        <S>           <C>      <C>     <C>       <C>      <C>       <C>     <C> 
        Busy Hour     5pm      6pm     11pm      5am      5pm       6pm     10am
        Max Trunks    
        in Use        7        20      19        18       18        24      10 
</TABLE>
- --------------------------------------------------------------------------------
Internet Gateway Traffic Stats

<TABLE>
<CAPTION>
                      Sun      Mon     Tues      Wed      Thurs     Fri     Sat

        <S>           <C>      <C>     <C>       <C>      <C>       <C>     <C> 
        Busy Hour     9am      10am    11am      3pm      5pm       6pm     2pm

        Capacity     
        % Usage       4%        40%    35%       50%      55%       95%     10% 
</TABLE>
- --------------------------------------------------------------------------------
Terminal Busy Hour

        Terminal Name: Neighborville, USA

<TABLE>
<CAPTION>
                      Sun      Mon     Tues      Wed      Thurs     Fri     Sat

        <S>           <C>      <C>     <C>       <C>      <C>       <C>     <C> 
        Busy Hour     5pm      6pm     11am      5pm      5pm       6pm     10am
        
        CPU %     
        Usage         45%      55%     63%       44%      50%       75%     30% 
</TABLE>
- --------------------------------------------------------------------------------




                                      E-1                           CONFIDENTIAL
<PAGE>   15
                                NETWORK REPORTS

Page 2
Sample Format
- --------------------------------------------------------------------------------
Transmitter Outages (over 2 hours)

      Average recovery time (by week)

      Detail on Exceptions - Transmitters out for more than 4 hours

Terminal Outages (over 1 minute)

      Recovery time - time & date
      Detail on all outages

- --------------------------------------------------------------------------------
Repeat trouble

      Terminals that have same trouble within one week.

      Transmitters that have same trouble within one week.

- --------------------------------------------------------------------------------
Activation System Access

      Ports Available: 12
                      ----

<TABLE>
<CAPTION>
                            Sun     Mon     Tues     Wed     Thurs     Fri     Sat

<S>                         <C>     <C>      <C>     <C>      <C>      <C>     <C>
      Busy hour             2pm     4pm      3pm     3pm      7pm      8pm     1pm

      Max ports
      in use                5       7        6       8        9        12      11

      Average Activation
      Time required per
      unit (in seconds)     60      75       90      90       105      120     45
</TABLE>





                                      E-2                           CONFIDENTIAL

<PAGE>   1
                                                                   EXHIBIT 10.25




                                RESALE AGREEMENT

                                     BETWEEN

                           GTE MOBILNET SERVICE CORP.

                                       AND

                                  PAGEMART, INC.



<PAGE>   2

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                PAGE

<S>                                                               <C>
 1.  TERM                                                         1
 2.  DEFINITIONS                                                  1
 3.  LICENSE                                                      2
 4.  INDEPENDENT PARTIES                                          2
 5.  SCOPE                                                        2
 6.  LICENSOR RESPONSIBILITIES                                    3
 7.  RESELLER RESPONSIBILITIES                                    3
 8.  PUBLIC REGULATION                                            4
 9.  PRICING                                                      4
10.  BILLING                                                      5
11.  TERMS OF PAYMENT                                             5
12.  SPECIAL PROGRAMS                                             5
13.  PRECEDENCE OF DOCUMENTS                                      6
14.  USE OF CONFIDENTIAL INFORMATION                              6
15.  PUBLICITY                                                    7
16.  COMPLIANCE WITH LAWS                                         7
17.  FORCE MAJEURE                                                7
18.  LIABILITY                                                    8
19.  ASSIGNMENT                                                   9
20.  TAXES                                                       10
21.  RECORDS                                                     10
22.  RIGHT OF ACCESS                                             10
</TABLE>


                                       i
<PAGE>   3

<TABLE>

<S>                                                              <C>
23.  TERMINATION                                                 11
24.  DISPUTE RESOLUTION                                          12
25.  NOTICES                                                     13
26.  NONWAIVER                                                   14
27.  SEVERABILITY                                                14
28.  SECTION HEADINGS                                            14
29.  SURVIVAL OF OBLIGATIONS                                     14
30.  CHOICE OF LAW                                               14
31.  ENTIRE AGREEMENT                                            14
</TABLE>




                                       ii
<PAGE>   4

                                RESALE AGREEMENT

This Agreement is made as of the first day of July 1996, by and between
PageMart, Inc., a Delaware corporation, with offices for the purpose of this
Agreement located at 6688 North Central Expressway, Suite 800, Dallas, Texas
75206 (hereinafter referred to individually or collectively as "LICENSOR") and
GTE Mobilnet Service Corp., a New York corporation with offices located at 245
Perimeter Center Parkway, Atlanta, GA 30346 (hereinafter referred to as
"RESELLER").

WHEREAS, LICENSOR provides paging, voice messaging, and related messaging
services (hereinafter referred to as "SERVICES"); and

WHEREAS, RESELLER desires to contract with LICENSOR to resell such SERVICES and,
in connection therewith, to receive blocks of Personal Identification Numbers
(hereinafter referred to as "PINs") and Direct Inward Dialing numbers
(hereinafter referred to as "DIDs") that provide individual access to LICENSOR's
system and SERVICES for resale to members of the general public;

THEREFORE, in consideration of the mutual promises and covenants contained
herein, the parties agree as follows:

1.   TERM

     This Agreement shall be effective on July 1, 1996 and shall continue in
     effect thereafter until October 30, 1996 unless terminated or modified by
     either party in accordance with the provisions of this Agreement.
     Thereafter, this Agreement shall be automatically be renewed for
     consecutive 12 month periods unless terminated by RESELLER by written
     notice to LICENSOR not less than thirty (30) days prior to the expiration
     date. At the end of each twelve (12) month period either party shall have
     the option to review Agreement terms and adjust such terms as are mutually
     agreed upon by the parties.

2.   DEFINITIONS

     (a)  CAP Code - The numeric code that identifies and is unique to each
          pager placed in service on LICENSOR's Paging System

     (b)  DID - A local telephone number assigned by LICENSOR to identify a
          specific pager on the LICENSOR's network. By dialing the DID, the
          respective pager is activated.

     (c)  Equipment - Pagers and related message receiving devices.

     (d)  GTE Tel Ops - GTE Telephone Operations Group.



<PAGE>   5

     (e)  Paging Terminal - A paging central office switch that processes paging
          calls.

     (f)  Paging System - A telecommunications network that provides paging and
          related messaging services throughout a specific geographic area.

     (g)  PIN - Personal Identification Number. A specific number assigned by
          LICENSOR to identify a pager on the LICENSOR's network. By entering
          their PIN into LICENSOR's computer vial a touch-tone telephone, the
          respective pager is activated.

     (h)  Subscriber - A person or entity that is the end user of the LICENSOR's
          Paging System.

     (i)  Telephone Interconnect Charges - Those charges directly associated
          with acquiring direct dial paging telephone numbers from the local
          exchange carrier.

3.   LICENSE

     (a)  LICENSOR grants RESELLER a non-exclusive license to resell LICENSOR's
          SERVICES subject to the rules, regulations and decisions of the
          Federal Communications Commission (hereinafter referred to as "the
          FCC").

     (b)  RESELLER may, upon receipt of LICENSOR's prior written approval, be
          authorized by LICENSOR to license its own sub-agents or affiliates for
          the marketing, promotion and resale of LICENSOR's SERVICES, provided
          that RESELLER shall be responsible for the observance by its
          sub-agents, affiliates, or sub-licensees of the terms and conditions 
          of the Agreement.

4.   INDEPENDENT PARTIES

     Each party is an independent contractor. Except as provided in this
     Agreement, neither party shall have the right, power or authority to act or
     to create any obligation, express or implied, on behalf of the other party.
     All sales by RESELLER shall be in its own name and for its own account

5.   SCOPE

     (a)  This Agreement is non-exclusive and RESELLER is under no obligation to
          LICENSOR to resell any certain amount of SERVICES.

     (b)  LICENSOR hereby agrees to provide SERVICES in an efficient, economic
          and timely fashion in accordance with generally accepted commercial
          and business practices.




                                        2
<PAGE>   6

6.   LICENSOR RESPONSIBILITIES

     (a)  LICENSOR shall provide RESELLER's Subscribers with access to its
          Paging System and shall use its good faith efforts to provide
          continuous network service in the geographical locations where
          LICENSOR is legally authorized and has the facilities to provide
          SERVICES.

     (b)  The SERVICES provided by LICENSOR shall include but not be limited to:

          (1)  Numeric display - as long as there is frequency space available,
               unlimited numeric display paging; and

          (2)  Alpha-numeric - as long as there is frequency space available,
               unlimited alpha-numeric paging.

     (c)  LICENSOR shall assign and coordinate all telephone and CAP code
          numbers in order to ensure the compatible initiation of SERVICES to
          Subscribers placed on LICENSOR's Paging System.

7.   RESELLER RESPONSIBILITIES

     (a)  RESELLER shall promote, solicit, market and take all reasonable
          actions, in the exercise of due diligence and good faith, to secure
          Subscribers for LICENSOR's Paging System.

     (b)  RESELLER shall be solely responsible for providing all sales,
          Equipment and customer support services to its Subscribers. RESELLER
          further agrees that all EQUIPMENT provided to its Subscribers shall be
          compatible with the existing transmission system of LICENSOR.

     (c)  RESELLER shall be solely responsible for all billings to and
          collections from its Subscribers, including but not limited to the
          sending of monthly bills, collection of amounts owed or past due, and
          the collection and return of all applicable taxes on such SERVICES or
          Equipment rentals.

     (d)  RESELLER shall provide and mail all announcements or notices required
          to be mailed to its Subscribers as required by any regulatory agency.

     (e)  RESELLER shall assign CAP codes, DIDs and PINs to its Subscribers only
          from the group of CAP codes, DIDs and PINs assigned to RESELLER by
          LICENSOR. RESELLER shall ensure that a given CAP code, DID or PIN is
          not assigned to more that one pager, provided that LICENSOR has not
          given RESELLER duplicate CAP codes, DIDs or PINs, which were then
          assigned in violation of this provision without the fault or knowledge
          of RESELLER.




                                        3
<PAGE>   7

         (f)     RESELLER shall maintain and keep in good working order all
                 Equipment leased by RESELLER to its Subscribers pursuant to
                 the terms of this Agreement, in accordance with all
                 manufacturer's specifications and the provisions of the filed
                 tariffs of LICENSOR.

8. PUBLIC REGULATION

         (a)     It is understood that the ultimate control and responsibility
                 for the standard and quality of SERVICES required under the
                 provisions of and license issued by the FCC to LICENSOR shall
                 be retained, rest and remain the prerogative and obligation
                 solely of LICENSOR. No provision of this Agreement shall be
                 construed as vesting in RESELLER any control whatsoever of the
                 radio communication facilities and operations of LICENSOR.

         (b)     This Agreement is subject to all of the terms and conditions
                 of LICENSOR's outstanding authorizations from the FCC and the
                 utility regulatory agencies in the states to which this
                 Agreement pertains, as such tariffs and authorizations are
                 presently in effect or as they may hereafter be revised.
                 Nothing in this Agreement shall be construed so as to impair
                 or diminish LICENSOR's control over the facilities of the
                 applicable stations.

         (c)     This Agreement shall be subject to the approval of the FCC and
                 the local state regulatory agency, if such approval shall be
                 required.

         (d)     This Agreement shall be terminated, amended, revised, or
                 supplemented immediately if required by the FCC or the local
                 state regulatory agency.

         (e)     The imposition by the FCC or local state regulatory agency of
                 any amendments, revisions, deletions or supplements to this
                 Agreement shall thereby relieve LICENSOR and RESELLER of any
                 obligations or liabilities to the other resulting from the
                 provisions of this Agreement which were ordered amended,
                 revised, deleted or supplemented.

9. PRICING

         (a)     RESELLER hereby agrees to pay LICENSOR the charges and fees
                 for SERVICES specified in Exhibit A in accordance with the
                 terms and conditions contained herein.

         (b)     The charges and fees specified in Exhibit A shall commence at
                 the time RESELLER activates each particular number in
                 LICENSOR's Paging System. Such charges shall continue for each
                 number for a minimum of thirty (30) days, and thereafter until
                 the number in questions is canceled





                                       4
<PAGE>   8

          or otherwise disconnected in accordance with the provisions herein.
          When a number is activated in the middle of a month, the applicable
          rate will be prorated to the first of the following month so that all
          subsequent bills will be tendered thereafter on a monthly basis.

     (c)  Price decreases arising during the term of this Agreement shall be
          immediately passed on to RESELLER and shall be in effect for all
          current and new Subscriber units.

     (d)  LICENSOR warrants and represents that the prices for SERVICES
          hereunder are no less favorable than those currently extended to any
          other similarly situated National RESELLER of LICENSOR of the same or
          like classification as RESELLER for the same volume/minimum commitment
          levels achieved by RESELLER for the same or like SERVICES.

     (e)  Where allowable by the state regulating authority, the prices charged
          by RESELLER to its Subscribers for all SERVICES shall be determined
          solely by RESELLER. In states where tariff rates are required,
          RESELLER may operate under its own tariff or the tariff of LICENSOR.

10.  BILLING

     LICENSOR shall provide RESELLER with a hard copy statement each month which
     identifies the number of DIDs or PINs billed at the applicable rates. At
     the reasonable request of RESELLER, LICENSOR shall also provide monthly
     billing in an electronic format.

11.  TERMS OF PAYMENT

     Payment shall be due thirty (30) days after the date or the receipt of
     LICENSOR's invoice, whichever is later.

12.  SPECIAL PROGRAMS

     Concurrently herewith, LICENSOR and RESELLER are entering into (i) a
     Representation Agreement, and (ii) a Trial Lease Program substantially in
     the forms attached hereto as Exhibit B and Exhibit C, respectively, and
     incorporated herein for all purposes. The Representation Agreement provides
     for compensation to RESELLER for the promotion of LICENSOR Products and
     SERVICES (as such terms are defined in the Representation Agreement). The
     Trial Lease Program provides for the lease to RESELLER of Products (as
     defined in the Trial Lease Program) from LICENSOR and the subsequent lease
     by RESELLER of such Products to RESELLER's Subscribers.




                                        5
<PAGE>   9

13.  PRECEDENCE OF DOCUMENTS

     All orders for SERVICES placed during the term hereof shall be subject to
     and governed by the provisions contained herein. The terms and conditions
     of this Agreement shall control over any conflicting or inconsistent terms
     contained in any order placed with LICENSOR by RESELLER. Notwithstanding
     the foregoing, as to the subject matter there of the terms and conditions
     of the Representation Agreement or Trial Lease Program, as the case may be,
     shall control over any conflicting or inconsistent terms and conditions
     contained in this Agreement.

14.  USE OF CONFIDENTIAL INFORMATION

     (a)  Any specifications, drawings, sketches, models, samples, tools,
          computer programs, technical information, or confidential business
          information or data furnished by the parties to one another hereunder,
          if in writing and clearly marked as "confidential" at the time of
          disclosure, or if oral and designated as confidential at the time of
          disclosure as well as summarized in writing indicating the
          confidential nature of the same within twenty (20) days of disclosure
          (hereinafter called "Confidential Information") shall remain the
          property of the supplier of such Information. All copies so such
          Confidential Information in written, graphic or other tangible form
          shall be returned to the supplier upon request.

     (b)  For the purposes of this Agreement, Confidential Information shall not
          include any information that:

          (1)  was previously known to the recipient;

          (2)  is subsequently received by the recipient free from any
               obligation to keep it confidential;

          (3)  is independently developed by the receiving party; or

          (4)  was or is subsequently made public by the supplier or a third
               party, without breach of any obligation of confidentiality.

     All Confidential Information shall be treated as confidential and not
     disclosed by the recipient, and shall be used by the recipient only in
     connection with fulfilling the obligations of the recipient that arise
     pursuant to this Agreement, unless the prior written consent of the
     supplier is obtained. Confidential Information shall only be distributed to
     those employees who have a need to know.

     (c)  Each party shall treat the other's Confidential Information in
          accordance with a standard of care reasonably calculated to prevent
          inadvertent or




                                        6
<PAGE>   10

          accidental disclosure. Nothing herein shall be construed as waiving
          the right of any party to require the other party to execute a
          written non-disclosure agreement, containing reasonable additional 
          terms and conditions, prior to the supplying of particular 
          Confidential Information from time to time.

15.  PUBLICITY

     The parties agree to submit to one another for written approval all
     advertising, sales promotion, press releases and other publicity matters
     relating to the SERVICES furnished or the SERVICES performed by them
     pursuant to this Agreement whereby their respective names or marks are
     mentioned or language from which the connection of said names or marks
     therewith may be inferred or implied, and the parties further agree not to
     publish or use such advertising, sales promotions, press releases, or
     publicity matters without such prior written approval. Such approval shall
     not be unreasonably withheld or delayed by either party.

16.  COMPLIANCE WITH LAWS

     The parties hereto shall comply with the provisions of all applicable
     federal, state, county and local laws, ordinances, regulations and codes
     (including procurement of required permits or certificates) in their
     respective performance hereunder, including, but not limited to, the
     standards promulgated under the Occupational Safety and Health Act,
     Executive Order 11246, as amended, relative to Equal Employment
     Opportunity, Section 503 of the Vocational Rehabilitation Act of 1973, as
     amended, and Section 402 of the Vietnam Era Veterans Readjustment
     Assistance Act of 1974 and all applicable laws, orders and regulations
     concerning immigrants and non-discrimination in the employment of
     minorities, females, veterans and the handicapped. Each party hereby agrees
     to indemnify the other party, and defend the same against, any claims, loss
     or damage sustained because of its noncompliance hereunder.

17.  FORCE MAJEURE

     Neither LICENSOR nor RESELLER shall be responsible for any delay or failure
     in performance of any part of this Agreement to the extent that such
     delay or failure is caused by event beyond its control, which may include,
     but not be limited to, fire, flood, explosion, war strike, embargo,
     government requirement, civil or military authority, and acts of God
     ("Condition(s)"). If any such Condition(s) occurs, the party delayed or
     unable to perform shall promptly give notice to the other party and, if
     such Condition(s) remains at the end of thirty (30) days thereafter, the
     party affected by the other's delay or inability to perform may elect to
     terminate or suspend this Agreement or part thereof, and resume performance
     of this Agreement once the Condition(s) ceases, with an option in




                                       7
<PAGE>   11

     the affected party to extend the period of this Agreement up to the length
     of time the Condition(s) endured.

18.  LIABILITY

     (a)  Notwithstanding anything to the contrary herein, each party shall
          indemnify and save harmless the other from any loss or damages
          (including reasonable attorney's fees) incurred by the other because
          of claims, suits, or demands based on personal injury or death or
          property damage or third party claims, suits or demands of any kind,
          to the extent such loss or damage is caused by or results from the
          negligent or willful acts or omissions of the other or its employees
          or agents. The indemnifying party shall receive the full opportunity
          and authority to assume the sole defense of and settlement of such
          suits. The indemnified party agrees to furnish to the indemnifying
          party upon request all information and reasonable assistance available
          to the indemnified party for defense against any such suit, claim, or
          demand.

     (b)  LICENSOR makes no warranty, either express or implied concerning its
          facilities, products, or SERVICES, including, without limitation,
          warranties of merchantability or fitness for a particular purpose.
          RESELLER acknowledges that service interruptions in the
          telecommunications industry frequently are due to circumstances beyond
          a carrier's control and are difficult to assess as to cause or
          resulting damages. The parties agree that LICENSOR shall not be liable
          beyond the actual and direct loss arising out of any mistakes,
          omissions, interruptions, delays, errors, or defects in transmission
          of pages on LICENSOR's Paging System. However LICENSOR's liability
          shall in no event exceed an amount equivalent to the proportionate
          charge to RESELLER for the period of the disruption of SERVICES or the
          amount of five hundred dollars ($500), whichever is less. LICENSOR
          shall not be liable for any act or omission of any other entity
          furnishing SERVICES to RESELLER. Neither party shall be liable for any
          special, incidental or other consequential damage or losses, including
          without limitation lost profits, or for loss of stored, transmitted or
          recorded data, even if it has been advised of the possibility of such
          damages, nor shall either party be liable for any such damages due to
          the fault or negligence of the other party or its employees, agents,
          or representatives.

     (c)  All work performed under this Agreement by any party shall be
          performed as an independent contractor and not as an agent of any
          other party. Persons furnished by the respective parties shall be
          solely the employees or agents of such parties, respectively, and
          shall be under the sole and exclusive direction of such parties. They
          shall not be considered employees of the other party for any purpose.
          Each party shall be




                                        8
<PAGE>   12
                 responsible for compliance with all laws, rules and
                 regulations involving their respective employees or agents,
                 including (but not limited to) employment of labor, hours of
                 labor, health and safety, working conditions and payment of
                 wages.   Each party shall also be responsible, respectively,
                 for payment of taxes, including federal, state, and municipal
                 taxes, chargeable or assessed with respect to its employees or
                 agents, such as social security, unemployment, workers'
                 compensation, disability insurance and federal and state
                 income tax withholding.

         (d)     RESELLER and LICENSOR each agree to maintain during the term
                 hereof all insurance and/or bonds required by law or this
                 Agreement, including, but limited to (1) Workers' Compensation
                 and related insurance as prescribed by applicable law; (2)
                 employer's liability insurance with limits of at least $100,000
                 for each occurrence, and (3) comprehensive general liability
                 insurance including products liability, and, if the use of
                 motor vehicles is required, comprehensive motor vehicle
                 liability insurance, each with limits of at least $500,000 for
                 combined single limit for bodily injury, including death,
                 and/or property damage. RESELLER and LICENSOR each shall cause
                 the other to be included as an Additional Insured under their
                 respective policies and RESELLER's and LICENSOR's appropriate
                 coverage under such policies shall be primary. RESELLER and
                 LICENSOR each shall furnish certificates or evidence of the
                 foregoing insurance indicating the amount and nature of such
                 coverage, the expiration date of each policy, and stating that
                 no material change or cancellation of any such policy shall be
                 effective unless thirty (30) days advanced written notice is
                 given to the party named as an Additional Insured.
                 Notwithstanding the above, LICENSOR and RESELLER shall each
                 have the option, where permitted by law, to self-insure any or
                 all of the foregoing risks.

19.      ASSIGNMENT

         (a)     Except as otherwise provided herein, the rights and
                 obligations of the parties hereunder shall neither be assigned
                 nor delegated without prior written consent of the other
                 party, provided that any party may assign or delegate their
                 respective rights and obligations hereunder, in whole or in
                 part, to any parent, subsidiary or affiliate of RESELLER or
                 LICENSOR that was such a parent, subsidiary or affiliate at
                 the time of execution of this Agreement upon prior written
                 notice to the other. Such assignment shall not diminish any
                 rights or duties that LICENSOR or RESELLER may have had prior
                 to the effective date of assignment.

         (b)     The limitation on assignment does not apply to an assignment
                 confined solely to monies due or to become due under this
                 Agreement, provided RESELLER or LICENSOR is given thirty (30)
                 days prior written notice of such assignment. An assignment of
                 monies shall be void to the extent





                                       9
<PAGE>   13
          that it attempts to impose upon RESELLER or LICENSOR obligations to
          the assignee in addition to the payment of such monies, or to preclude
          RESELLER or LICENSOR from dealing solely and directly with the other
          in all matters pertaining hereto, including negotiation of amendments
          or settlement of amounts due. If RESELLER or LICENSOR makes such an
          assignment, it is and shall remain responsible for payment hereunder.

20.  TAXES

     RESELLER shall be liable for and shall reimburse LICENSOR for actual
     payments of any Retailers' Excise Taxes, state and local sales and use
     taxes, or any similar taxes as applicable, with respect to transactions
     under this Agreement. Taxes payable by RESELLER shall be separately stated
     in LICENSOR'S invoices and shall not be included in LICENSOR's prices.
     RESELLER shall not be liable for any tax for which a valid exemption
     certificate acceptable to the applicable state or local taxing authorities
     is furnished by RESELLER to LICENSOR.

21.  RECORDS

     (a)  LICENSOR shall maintain complete and accurate records of all amounts
          billable to and payments made by RESELLER hereunder, in accordance
          with generally accepted accounting practices. LICENSOR shall retain
          such records for a period of three (3) years from the date of
          rendering of SERVICES covered by this Agreement. LICENSOR agrees to
          provide supporting documentation concerning any disputed amount of
          invoice to RESELLER within thirty (30) days after RESELLER provides
          written notification of the dispute to LICENSOR. LICENSOR shall retain
          such records for three (3) years from date of invoice.

     (b)  RESELLER's original Subscriber records shall be and remain the
          property of RESELLER. LICENSOR shall be entitled at LICENSOR's expense
          during normal business hours to make copies of such records directly
          relating to information verifying the number of Subscribers or
          compliance by RESELLER to the terms of this Agreement.

22.  RIGHT OF ACCESS

     LICENSOR and RESELLER shall each permit reasonable access during normal
     working hours to its facilities in connection with work hereunder. No
     charge shall be made for such visits. It is agreed that reasonable prior
     notification shall be given when access is required.



                                       10
<PAGE>   14

23.  TERMINATION

     (a)  RESELLER may terminate this Agreement without cause, effective
          immediately, upon written notice to LICENSOR in the event RESELLER's
          resale activities are combined with the resale activities of GTE Tel
          Ops under the Resale Agreement between GTE Tel Ops and LICENSOR dated
          November 1, 1993 (Resale Combination). In the event of a Resale
          Combination, all of RESELLER's subscribers will be transferred to the
          account of GTE Tel Ops and the terms and conditions provided in the
          Resale Agreement dated November 1, 1993 shall thereafter govern.
          Termination shall not affect any order placed prior to the date of
          termination.

     (b)  Either party may terminate this Agreement, effective immediately,
          without liability for said termination, upon written notice to the
          other party, if any of the following events occur:

          (1)  The other files a voluntary petition in bankruptcy;

          (2)  The other is adjudged bankrupt;

          (3)  A court assumes jurisdiction of the assets of the other under a
               federal reorganization act;

          (4)  A trustee or receiver is appointed by a court for all or a
               substantial portion of the assets of the other;

          (5)  The other becomes insolvent or suspends its business;

          (6)  The other makes and assignment of its assets for the benefits of
               its creditors, except as required in the ordinary course of
               business;

          (7)  The identity of the other's business is materially changed by
               sale of its business, transfer of control of its outstanding
               stock, merger or otherwise.

     (c)  Either party may immediately terminate this Agreement for a material
          breach or default of any of the terms, conditions or covenants of this
          Agreement by the other, provided that such termination may be made
          only following the expiration of a thirty (30) day period during which
          the other party has failed to cure such breach after having been given
          written notice of such breach.

     (d)  In the event of a material breach of default by LICENSOR, provided
          that LICENSOR has failed to cure the same within thirty (30) days of
          its




                                       11
<PAGE>   15

          receipt of RESELLER's written notice of default, or if said default
          cannot be cured within a thirty (30) day period,' LICENSOR has failed
          to commence and diligently pursue curing such a default, RESELLER
          shall be under no obligation to continue to provide LICENSOR's
          SERVICES to its Subscribers, and RESELLER shall have the right to
          assign those Subscribers to another paging service.

24.  DISPUTE RESOLUTION

     (a)  The parties desire to resolve disputes arising out of this Agreement
          without litigation. Accordingly, except for action seeking a temporary
          restraining order or injunction related to the purposes of this
          Agreement, or suit to compel compliance with this dispute resolution
          process, the parties agree to use the following alternative dispute
          resolution procedure as their sole remedy with respect to any
          controversy or claim arising out of or relating to this Agreement or
          its breach.

     (b)  At the written request of a party, each party shall appoint a
          knowledgeable, responsible representative to meet and negotiate in
          good faith to resolve any dispute arising under this Agreement. The
          parties intend that these negotiations be conducted by non-lawyer,
          business representatives. The discussions shall be left to the
          discretion of the representatives. Upon agreement, the
          representatives  may utilize other alternative dispute resolution
          procedures such as  mediation to assist in the negotiations.
          Discussions and  correspondence among the representatives for
          purposes of these  negotiations shall be treated as confidential
          information developed for purposes of settlement, exempt from
          discovery and production, which shall not be admissible in the
          arbitration described below or in any lawsuit without the concurrence
          of all parties. Documents identified in or provided with such
          communications, which are not prepared for purposes of the
          negotiations, are not so exempted and may, if otherwise admissible,
          be admitted in evidence in the arbitration or lawsuit.

     (c)  If the negotiations do not resolve the dispute within sixty (60) days
          of the initial written request, the dispute shall be submitted to
          binding arbitration by a single arbitrator pursuant to the Commercial
          Arbitration Rules of the American Arbitration Association. A party may
          demand such arbitration in accordance with the procedures set out in
          those rules. Discovery shall be controlled by the arbitrator and shall
          be permitted to the extent set out in this Section. Each party may
          submit in writing to a party, and that party shall so respond, to a
          maximum of any combination of thirty-five (35) (none of which may have
          subparts) of the following: interrogatories, demands to produce
          documents and requests for admission. Each party is also entitled to
          take the oral deposition of one (1) individual of another




                                       12
<PAGE>   16

          party. Additional discovery may be permitted upon mutual agreement
          of the parties. The arbitration hearing shall be commenced with sixty
          (60) days of the demand for arbitration and the arbitration shall be
          held in Dallas, Texas. The arbitrator shall control the scheduling so
          as to process the matter expeditiously. The parties may submit written
          briefs. The arbitrator shall rule on the dispute by issuing a written
          opinion within thirty (30) days after the close of hearings. The times
          specified in this Section may be extended upon mutual agreement of the
          parties or by the arbitrator upon a showing of good cause. Judgment
          upon the award rendered by the arbitrator may be entered in any court
          having jurisdiction.

     (d)  Each party shall bear its own cost of these procedures. A party
          seeking discovery shall reimburse the responding party the cost of
          production of the documents (to include search time and reproduction
          time costs). The parties shall equally share the fees of the
          arbitration and the arbitrator.

25.  NOTICES

     Any notice or demand given under the terms of this Agreement or pursuant to
     statute shall be in writing and shall be given or made by telegram,
     facsimile transmission, certified or registered mail, express mail or other
     overnight delivery service or hand delivery, proper postage or other
     charges paid and addressed or directed to the respective parties as
     follows:



                                  To RESELLER:

     GTE Mobilnet Corp. 
     245 Perimeter Center Parkway 
     Atlanta, GA 30346 
     Attention: Director-Vertical Services

                                  To LICENSOR:

     PageMart
     6688 North Central Expressway
     Suite 800
     Dallas, Texas 75206
     Attention: Vice President-Division General Manager

     Such notice or demand shall be deemed to have been given or made when
     actually received or seventy-two (72) hours after being sent, whichever
     occurs first.




                                       13
<PAGE>   17

     The address for notice set out above may be changed at any time by giving
     thirty (30) days prior written notice in the manner above.

26.  NONWAIVER

     Either party's failure to enforce any of the provisions of this Agreement
     and/or any purchase order, or to exercise any option hereunder, shall in no
     way construed as a waiver of such provisions, rights, or options, or in any
     way be deemed to affect the validity of this Agreement or any purchase
     order.

27.  SEVERABILITY

     Should any part of this Agreement for any reason be declared invalid by
     order of any court or regulatory agency, such order shall not affect the
     validity of any remaining portion, which shall remain in force and effect
     as if this Agreement had been executed with the invalid portion eliminated,
     and it is hereby declared the intention of the parties that they would have
     executed the remain portion of this Agreement without including therein any
     such part or portion which may, for any reason be hereafter declared
     invalid.

28.  SECTION HEADINGS

     The headings of the sections herein are inserted for convenience only and
     are not intended to affect the meaning or interpretation of this Agreement.

29.  SURVIVAL OF OBLIGATIONS

     The respective obligations of LICENSOR and RESELLER under this Agreement
     which by their nature would continue beyond the termination, cancellation
     or expiration hereof, shall survive termination, cancellation or expiration
     hereof.

30.  CHOICE OF LAW

     The construction, interpretation and performance of this Agreement shall be
     governed by and construed in accordance with the domestic laws of the state
     of Delaware.

31.  ENTIRE AGREEMENT

     This Agreement and the exhibits hereto constitute the entire agreement
     between LICENSOR and RESELLER. No modifications shall be made this
     Agreement unless in writing and signed by appropriate representatives of
     the parties.




                                       14
<PAGE>   18

IN WITNESS WHEREOF, the parties hereto have executed this Agreement through
their authorized corporate representatives.

PAGEMART, INC.                          GTE MOBILNET SERVICE CORP.




By: /s/ DOUG GLEN                       By: /s/ TERRY LEWIS
   -------------------------               ------------------------------------

Name:  Doug Glen                        Name:  Terry Lewis

Title: Vice President,                  Title: Vice President, 
       Strategic Alliances                     Product Management


                            Attested By: /s/ M.C. HOPPE
                                        ---------------------------------------
                                        Name:  M. C. Hoppe
                                             ----------------------------------
                                               Vice President
                                        Title: Finance & Information Management
                                             ----------------------------------




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