AGREEMENT OF PROMISE OF ASSIGNMENT AND TRANSFER

                                 OF PERMISSIONS

BY MEANS OF THIS PRIVATE INSTRUMENT:

      I.    MULTIPONTO TELECOMUNICACOES LTDA., a civil limited liability company
            organized and existing under the laws of the Federative Republic of
            Brazil, with head offices in the City of Rio de Janeiro, State of
            Rio de Janeiro, at Av. Presidente Wilson, 231, 28th floor (part),
            registered as taxpayers under CGC No. 086.982.675 /0001-07, herein
            represented by its duly empowered attorney-in-fact Mr. EDUARDO
            PENIDO MONTEIRO, Brazilian, married, engineer, resident and
            domiciled in the City of Rio de Janeiro, State of Rio de Janeiro,
            with identity card number 1029543 issued by SSP-BA, registered as
            taxpayer under CPF number 094323965-68, hereinafter referred to
            simply as "PROMISING TRANSFEROR";

AND

      II.   PAGING NETWORK DO BRASIL S.A., a corporation, organized and existing
            under the laws of the Federative Republic of Brazil, with head
            offices in the City of Sao Paulo, State of Sao Paulo, at Rua
            Alexandre Dumas, number 1711, registered as taxpayer under CGC/MF
            No. 01.126.946/0001-61, herein represented by its Officers Mr.
            Thomas Crane Trynin, American citizen, single, business
            administrator, bearer of identity card No. V192319-I and CPF No.
            214308398-05 and Mr. Marco Antonio Fregenal, Brazilian citizen,
            married, business administrator, bearer of identity card No.
            35355458-5 and CPF 214170768-49; hereinafter referred to simply as
            "PROMISING TRANSFEREE";

WHEREAS:

      1.    The PROMISING TRANSFEROR is the holder of permissions granted by the
            Ministry of Communications for the exploitation of Paging Services
            ("Servico Especial de Radiochamada") ("the Paging Services"), in
            accordance with Ordinances issued by the Ministry of Communication
            Number 497, 498, 499, 500, 501, 502, 503 and 504, all dated as of
            July 18, 1994 and published in the Official Gazette of July 22, 1994
            except for 


            Ordinance No. 502 published in the Official Gazette of July 25, 1994
            (the "Permissions"), which attached hereto as Exhibit I, are an
            integral part hereof as if they had been herein transcribed in full;

      2.    Having in view the amplification of the rendering of the services in
            the Brazilian territory the PERMISSION HOLDER has requested the
            Ministry of Communications the transformation of the Permissions
            into Permissions to National Restricted Exploitation (solely
            National Restricted Permissions, and together with the Permissions,
            also "Permissions") according to Ordinance No. 579/94, of August 2,
            1994;

      3.    The PROMISING TRANSFEROR has entered into an agreement for the
            resale of its Paging Services and mutual operating agreement with
            the PROMISING TRANSFEREE (The "Operating Agreement");

      4.    The PROMISING TRANSFEREE has made investments in the installation,
            operation and provision of the Paging Services, and has been
            developing commercial and marketing efforts with its operation and
            the resale;

      5.    The PROMISING TRANSFEREE has expressed its wish to acquire the
            Permissions and the PROMISING TRANSFEROR agrees to transfer them to
            the PROMISING TRANSFEREE;

      6.    The PROMISING TRANSFEREE desires to purchase said Permissions, to
            which the PROMISING TRANSFEROR agrees;

      7.    The PROMISING TRANSFEROR and the PROMISING TRANSFEREE acknowledge
            the legal demand for obtaining the prior authorization of the
            Ministry of Communications in order to have the Permissions
            transferred,

NOW, THEREFORE:

The Parties have agreed to enter in this Agreement of Promise of Assignment and
Transfer of Permissions with respect to Paging Services (the "Agreement"), in
accordance with the clauses and conditions specified below:

Clause One: DESCRIPTION OF THE PERMISSIONS

The Permissions are all of those described in Exhibit I hereto, which initialed
by the parties become an integral part of this Agreement, including any and all


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inherent rights of exploitation, namely, but not limited to, those arising from
distinct extensions or modalities of exploitation at any time granted to the
PROMISING TRANSFEROR by all and any Permissions to National Restricted
Exploitation.

Clause Two: PURPOSE

The PROMISING TRANSFEROR hereby promises to transfer to the PROMISING TRANSFEREE
and the latter promises to acquire the Permissions attached hereto as Exhibit I,
which shall be considered to have been transcribed in full herein, including any
and all inherent rights of exploitation, namely, but not limited to, those
arising from distinct modalities of exploitation at any time granted to the
PROMISING TRANSFEROR by all and any Permissions to National Restricted
Exploitation, or other modalities of exploitation.

      First Paragraph: The definitive transfer of title to the Permissions of
      the PROMISING TRANSFEROR to the PROMISING TRANSFEREE shall be made by
      means of the execution of one or more definitive transfer agreements
      relating to each of the Permissions individually, in groups or jointly, at
      the option of the PROMISING TRANSFEREE.

      Second Paragraph: For purposes of the definitive transfer of title to the
      Permissions by the PROMISING TRANSFEREE, as provided in the First
      Paragraph above, it is incumbent upon it to present to the PROMISING
      TRANSFEROR the text of the definitive transfer agreement or agreements,
      depending on whether it opts for the joint transfer of the Permissions, or
      for their transfer individually or in groups.

      Third Paragraph: For purposes of the provisions of the preceding
      paragraph, the PROMISING TRANSFEROR grants on the date hereof an
      irrevocable power-of-attorney to persons chosen by mutual agreement
      between the PROMISING TRANSFEROR and the PROMISING TRANSFEREE, conferring
      upon them the necessary powers to carry out the transfer.

      Fourth Paragraph: It is understood that the transfer or transfers of the
      Permissions include the transfer to the PROMISING TRANSFEREE of any
      equipment, cables, transmitters, receivers and other infrastructure, and
      all user's rights related to such infrastructure then owned or entitled to
      the PROMISING TRANSFEROR and affected to the service.


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      Fifth Paragraph: With the transfer of the Permissions, the parties
      consider automatically assigned and transferred to the PROMISING
      TRANSFEREE all the PROMISING TRANSFEROR's rights arising from any and all
      subscriber agreements.

Clause Three: THE DEFINITIVE TRANSFER AGREEMENT(S)

The definitive agreement(s) for the transfer of title to the Permissions shall
be granted by the PROMISING TRANSFEROR in favor of PROMISING TRANSFEREE or in
favor of whom it may indicate, it being recognized by the PROMISING TRANSFEROR,
as of now, that the PROMISING TRANSFEREE has the right to be substituted in its
contractual position in this Agreement one or more times, without the PROMISING
TRANSFEROR's consent, pursuant to its option for the joint, isolated or grouped
transfer of the Permissions, being able, for this purpose, to indicate one or
several interested parties, as the case may be, subject to any applicable legal
and regulatory requirements.

Clause Four: TERM FOR THE EXECUTION OF THE DEFINITIVE AGREEMENT(S)

The definitive agreement(s) for the transfer of title to the Permissions shall
be executed by the PROMISING TRANSFEROR and PROMISING TRANSFEREE, as soon as the
former has obtained from the Ministry of Communications the competent
authorization in accordance with items 6.11 and 6.11.1 of the General
Telecommunications Rule ("Norma Geral de Telecomunicacoes") approved by
Ordinance No. 232/91 of October 23 and item II.9, of the Specific Conditions of
the Specific Telecommunications Rule ("Norma Especifica de Telecomunicacoes"),
approved by Ordinance No. 257/91 of October 23, i.e. once the three (3) year
period counted from the date of issuance of the functioning license (or such
shorter period as may then be applicable) and the above referred express
authorization is obtained.

      First Paragraph: The term referred to in the previous item shall be,
      however, anticipated upon the earlier of the following situations:

      (i)   in accordance with the precise terms of an eventual legislative or
            administrative change, regarding the terms of the transfer of the
            Permissions;


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      (ii)  when any express authorization has been obtained for the direct
            assignment and transfer; or

      (iii) when any alternative solution, in accordance with the Second and
            Third Paragraphs below, has been allowed.

      Second Paragraph: The PROMISING TRANSFEROR shall use its best efforts so
      as to obtain the previous administrative authorization(s) required in
      connection with the execution of the definitive transfer agreement,
      cooperating, in a diligent and active manner, in all bureaucratic
      proceedings which may be necessary or convenient to accomplish such end.
      The PROMISING TRANSFEROR also agrees, if necessary, to look for
      alternative solutions to make such transfer possible, provided such
      alternative solutions are not excessively burdensome.

      Third Paragraph: The PROMISING TRANSFEREE shall cooperate, in a diligent
      and active manner, for the accomplishment of occasional bureaucratic
      requirements and, if necessary, to search for the alternative solutions in
      order to allow such transfer, being provided that said solutions are not
      excessively burdensome.

      Fourth Paragraph: For purposes of the provisions of the preceding
      paragraphs, the PROMISING TRANSFEROR grants, on the date hereof, an
      irrevocable power-of-attorney to persons chosen by mutual agreement
      between PROMISING TRANSFEROR and the PROMISING TRANSFEREE, conferring upon
      them the necessary powers to effectuate the transfer of the rights.

Clause Five: REPRESENTATIONS AND WARRANTIES OF THE PROMISING TRANSFEROR

      First Paragraph: The PROMISING TRANSFEROR is a limited liability company
      duly organized, validly existing and in good standing under the laws of
      the Federative Republic of Brazil and has full corporate power and
      authority to carry on its business as it is now being conducted and to own
      all of its properties and assets. The PROMISING TRANSFEROR is duly
      qualified to do business and is in good standing in each jurisdiction in
      which the ownership of its properties or the conduct of its business
      requires such qualification.

      Second Paragraph: The PROMISING TRANSFEROR has all necessary corporate
      power and authority and has taken all corporate action necessary to enter
      into this Agreement, to consummate the transactions contemplated on its
      part 


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      hereby and to perform its obligations hereunder. The execution, delivery
      and performance of this Agreement and the consummation of the transactions
      described herein by the PROMISING TRANSFEROR have been duly authorized by
      all requisite corporate action. This Agreement has been duly executed and
      delivered by the PROMISING TRANSFEROR and, assuming the due execution and
      delivery thereof by the PROMISING TRANSFEREE, is a valid and binding
      obligation of the PROMISING TRANSFEROR, enforceable against it in
      accordance with its terms.

      Third Paragraph: As of the date of this Agreement, the PROMISING
      TRANSFEROR has good title to all of the Permissions, free and clear of any
      and all liens, charges, pledges, mortgages, security interests or other
      encumbrances of any kind, except for governmental restrictions on the
      transfer thereof.

      Fourth Paragraph: The business of the PROMISING TRANSFEROR has been
      operated in material compliance with all applicable laws, statutes, rules,
      regulations, ordinances, codes, orders, licenses, permits or
      authorizations, as such now apply to such business, and to the knowledge
      of the PROMISING TRANSFEROR no notification has been received alleging any
      violation of any of the foregoing.

      Fifth Paragraph: Neither the execution, delivery nor performance of this
      Agreement or any of the transactions contemplated hereby will (i) violate
      or conflict with any provision of the organizational documents of the
      PROMISING TRANSFEROR, (ii) result in a breach of or a default under any
      material provision of any contract, agreement, lease, commitment, license,
      franchise, permit, authorization or concession to which the PROMISING
      TRANSFEROR is a party or bound or to which any property or asset of the
      PROMISING TRANSFEROR is subject or an event which with notice, lapse of
      time, or both, would result in any such breach or default, or (iii) result
      in violation by the PROMISING TRANSFEROR of any statute, rule, regulation,
      ordinance, code, order, judgment, writ, injunction, decree, or award, or
      an event which with notice, lapse of time, or both, would result in any
      such violation, which breach, default or violation would have a material
      adverse effect on the ability of the PROMISING TRANSFEROR to consummate
      the transactions contemplated hereby.


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Clause Six: REPRESENTATIONS AND WARRANTIES OF THE PROMISING TRANSFEREE

      First Paragraph: The PROMISING TRANSFEREE is a corporation (S.A.) duly
      organized, validly existing and in good standing under the laws of the
      Federative Republic of Brazil and has full corporate power and authority
      to carry on its business as it is now being conducted and to own all of
      its properties and assets. The PROMISING TRANSFEREE is duly qualified to
      do business and is in good standing in each jurisdiction in which the
      ownership of its properties or the conduct of its business requires such
      qualification.

      Second Paragraph: The PROMISING TRANSFEREE has all necessary corporate
      power and authority and has taken all corporate action necessary to enter
      into this Agreement, to consummate the transactions contemplated on its
      part hereby and to perform its obligations hereunder. The execution,
      delivery and performance or this Agreement and the consummation of the
      transactions described herein by the PROMISING TRANSFEREE have been duly
      authorized by all requisite corporate action. This Agreement has been duly
      executed and delivered by the PROMISING TRANSFEREE and, assuming the due
      execution and delivery thereof by the PROMISING TRANSFEROR, is a valid and
      binding obligation of the PROMISING TRANSFEREE, enforceable against it in
      accordance with its terms.

      Third Paragraph: The business of the PROMISING TRANSFEREE has been
      operated in material compliance with all applicable laws, statutes, rules,
      regulations, ordinances, codes, orders, licenses, permits or
      authorizations, as such now apply to such business, and to the knowledge
      of the PROMISING TRANSFEREE no notification has been received alleging any
      violation of any of the foregoing.

      Fourth Paragraph: Neither the execution, delivery nor performance of this
      Agreement or any of the transactions contemplated hereby will (i) violate
      or conflict with any provision of the organizational documents of the
      PROMISING TRANSFEREE, (ii) result in a breach of or a default under any
      material provision of any contract, agreement, lease, commitment, license,
      franchise, permit, authorization or concession to which the PROMISING
      TRANSFEREE is a party or bound or to which any property or asset of the
      PROMISING TRANSFEREE is subject or an event which with notice, lapse of
      time,


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      or both, would result in any such breach or default, or (iii) result in
      violation by the PROMISING TRANSFEREE of any statute, rule, regulation,
      ordinance, code, order, judgment, writ, injunction, decree, or award, or
      an event which with notice, lapse of time, or both, would result in any
      such violation, which breach, default or violation would have a material
      adverse effect on the ability of the PROMISING TRANSFEREE to consummate
      the transactions contemplated hereby.

Clause Seven: MUTUAL COVENANTS OF THE PARTIES

      First Paragraph: From the date hereof until the date upon which the
      definitive agreement(s) for the transfer of the Permissions are executed,
      the PROMISING TRANSFEROR shall:

      (a)   not take any action that would result in the rescission of the grant
            of the Permissions to the PROMISING TRANSFEREE, or any action
            inconsistent with the consummation of the transactions contemplated
            hereby;

      (b)   take all action necessary to maintain good title to the Permissions,
            including using its best efforts to preserve generally the present
            relationships with persons or governmental agencies instrumental in
            the granting of the Permissions; or

      (c)   not sell, transfer or otherwise dispose of any of the Permissions or
            permit any lien, charge, pledge, mortgage, security interest or
            other encumbrance of any kind to exist thereon.

      Second Paragraph: From the date hereof until the date upon which the
      definitive agreement(s) for the transfer of the Permissions are executed,
      the PROMISING TRANSFEREE shall not take any action inconsistent with the
      consummation of the transactions contemplated hereby.

Clause Eight: CONSIDERATION

      As consideration for the transfer of all the Permissions, now promised,
      the PROMISING TRANSFEROR acknowledges receipt from PROMISING TRANSFEREE,
      of (i) subscription bonds ("SB") to purchase 2.5% (two and a half percent)
      of the common stock (the "Common Stock") of PROMISING TRANSFEREE
      (pre-management dilution), and also (ii) the right to subscribe, up to the
      limit of 2.000 shares of PROMISING TRANSFEREE's preferred stock.


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      Sole Paragraph: The failure of the PROMISING TRANSFEROR to complete the
      assignment and transfer now agreed, once the regulatory term has elapsed
      and the approval of the competent authorities is obtained, and provided
      that the breach was not the result of the action or inaction of a
      government or regulatory authority, such as the Ministry of Communications
      of Brazil, shall give rise to the forfeit of its equity interest in the
      PROMISING TRANSFEREE.

Clause Nine: JURISDICTION

      9.1.  This Agreement and all questions arising in connection with its
            interpretation and legal relations between the parties in connection
            herewith shall be governed and construed in accordance with the
            substantive law of Brazil.

      9.2.  All disputes and differences arising from or in connection with this
            Agreement, or in relations between the parties with respect to the
            subject matter hereof, shall be finally settled by binding
            arbitration in accordance with the Rules for Conciliation and
            Arbitration of the International Chamber of Commerce (ICC) by three
            arbitrators appointed in accordance with said Rules. The place of
            arbitration shall be New York, New York, and the arbitration
            proceedings shall be conducted in English.

      9.3.  If for any reason, notwithstanding the international character of
            this Agreement and the diverse nationalities of the shareholders in
            the companies parties to the same, the preceding clause 9.2. should
            not be applied or be held invalid by any court in Brazil or in the
            United States of America, the parties specifically agree that any
            dispute or controversy relating to this Agreement or otherwise
            described in clause 9.2. shall be decided solely and exclusively by
            the competent courts of the State of New York, United States of
            America.


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In witness whereof, the parties have caused this Agreement to be duly executed
in three (3) counterparts of equal content and form, in the presence of the two
witnesses below.

                         Sao Paulo, December 11th, 1996


                    /s/ Eduardo Penido Monteiro
                   ------------------------------------------
                        MULTIPONTO TELECOMUNICACOES LTDA.
                             Eduardo Penido Monteiro
                                attorney-in-fact


                    /s/ Thomas Crane Trynin  
                    /s/ Marco Antonio Fregenal
                   ------------------------------------------
                          PAGING NETWORK DO BRASIL S.A.
                   Thomas Crane Trynin  Marco Antonio Fregenal
                         Officer              Officer
WITNESSES:


1.    /s/ Roberto Duque Estrada
      --------------------------
      Roberto Duque Estrada
      OAB/RJ 80.668
      CPF/MF 016.468.087-03


2.    /s/ Maria Gabriela Campos da Silva
      -----------------------------------
      Maria Gabriela Campos da Silva
      OAB/RJ 84.606-E
      CPF/MF 016.706.607-29