Document:

PURCHASE AND SALE AGREEMENT

This Purchase and Sale Agreement (hereinafter "Agreement") is entered into as of
July 11th, 2000, by and among Globaltron Communications Corporation, a company
Incorporated under the laws of Florida, U.S.A., with principal offices located
at New World Tower, 100 North Biscayne Boulevard, Suite 2500, Miami, Florida,
U.S.A. (hereinafter "Purchaser"), Tropico Sistemas e Telecomunicacoes S.A., a
company incorporated under the laws of Brazil, with principal offices located at
Avenida Selma Parada 201 (Galleria Office Park Ed 4), Campinas, State of Sao
Paulo, Brazil (hereinafter "Vendor"), and Singer Products Inc., a company
Incorporated under the laws of Florida, USA, with principal offices located at
1840 West 49th Street, Suite 501, Hialeah, Florida, U.S.A. and acting herein
both in its capacity as Authorized Sales Representative of Tropico (hereinafter
"Singer").

WHEREAS, the Parties desire to commence the partial execution of the objectives
of the Memorandum of Understanding (hereinafter "MOU"), signed between them on
May 13, 2000, in which the purchase of certain switches was contemplated,

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

                                     PART I
                                PURCHASE AND SALE

1 Nature of Transaction

       1.1  On the terms and conditions set forth in this Agreement, Purchaser
            agrees to purchase and Vendor agrees to sell certain telephony and
            transit switches, as well as certain related services, the
            description, quantities and prices of which are set forth in Exhibit
            A hereto (the "Products").

            1.1.1   Vendor declares that the Products are either new or of
                    recent manufacture and includes, among others, the features
                    described below:
                          -Standard telephony services and ISDN capabilities;
                          -Local and tandem switching capabilities;
                          -Supplementary services;
                          -SSC7-ETSI (for Colombia, Peru and other countries)
                           and ANSI (USA) signaling including STP capability;
                          -SSC7 over IP signaling;
                          -SSP function for Intelligent Network;

<PAGE>

Purchase and Sale Agreement                                              Page 2

                        - V5.1 and V5.2 capabilities and interfaces;
                        - Voice announcement;
                        - Remote Access Server function integrated in the switch
                          (for ISP access front and Internet off-load);
                        - TSC or Tropico Softswitch controller, able to provide
                          call control according to MGCP protocol and network
                          model;
                        - H.323 signaling interoperability (mediation gateway);
                        - CDR generation with AMA format for all the calls
                          controlled by the switch (signaling independent);
                        - Billing recording for contingency;
                        - Billing batch availability through FTP transfer;
                        - Remote or local OA&M;
                        - Voice mail and pre-paid services, with respective
                          service management platform.

       1 .2     Except where it conflicts with the terms and conditions of this
                Agreement the Vendor proposal set for the in Exhibit B hereof is
                made a part of this Agreement.

       1.3      Vendor declares that the scope of supply includes installation
                and commissioning supervision as well as the system engineering
                of Vendor's supplied products. The installation, equipment tests
                and the services in the country of destination of the products
                will be performed by Singer, under a separated agreement
                "Services Agreement" dated July 10th 2000.

2 Deployment Phases

       2.1      The implementation of the MOU shall be conducted in several
                phases, of which this Agreement constitutes the first phase
                ("Phase One").

       2.2      In this Phase One, the Products shall be subject to four
                deployment groupings (hereinafter individually referred to as
                "Deployment Group").

       2.3      The first Deployment Group shall consist of:

                a) One telephone transit switch for Medellin, Colombia Satellite
                   Hub for Orbitel Project, with 80 E1s;

                b) One telephone transit switch for New York, with 80 E1s; and

                c) One telephone transit switch for Lima, Peru Satelite Hub,
                   with 40 E1s.

       2.4         The second Deployment Group shall, consist of:

<PAGE>

Purchase and Sale Agreement                                               Page 3

             d)    One local switch for Wireless Local Loop access network for
                   Bogota, Colombia, equipped with a total number of 113 E1s;

             e)    One local Switch for Wireless Local Loop access network for
                   Cali, Colombia equipped with the total number of 135 E1s;

             f)    One local switch for Wireless Local Loop access network for
                   Cartagena, Colombia equipped with the total number of 28 E1s;

       2.5      The third Deployment Group shall consist of:

             g)    One local switch for Wireless Local Loop access network for
                   Medellin, Colombia equipped with the total number of 57 E1s

             h)    One switch for Wireless Local Loop access network for
                   Barranquilla, Colombia equipped with the total number of 57
                   E1s

             i)    Expansion of the New York transit switch, with 120 additional
                   E1s.

             j)    Expansion of the Medellin transit switch, with 80 additional
                   E1s;

             k)    Expansion of the Peru Satellite Hub transit switch, with 40
                   additional E1s;

       2.6      The fourth Deployment Group shall consist of:

                l) Expansion of the New York transit switch, with 130 additional
                   E1s;

                m) Expansion of the Bogota local switch for Wireless Local Loop,
                   access network equipped with the total number of 97 E1s

                n) Expansion of the Cali local switch for Wireless Local Loop,
                   access network equipped with the total number of 80 E1s;

                o) Expansion of the Cartagena local switch for Wireless Local
                   Loop, access network equipped with the total number of 25
                   E1s

                p) Five local switches for Wireless Local Loop access network
                   equipped with the total number of 28 E1s one for each of the
                   following cities In Colombia: Pereira, Cucuta, Bucaramanga,
                   Santa Maria and Villavicencio.

<PAGE>

Purchase and Sale Agreement                                               Page 4

3 Prices and Payments

       3.1      The purchase price for the Products (hereinafter "Purchase
                Price"), as set forth in Exhibit A, shall be Five Million, Three
                Hundred and Forty Thousand (US$5,340,000) dollars of the United
                States of America, allocated by Deployment Group as follows:

            3.1.1    First Deployment Group

                     The portion of the Purchase Price for the Products included
                     in the first Deployment Group shall be One Million and
                     Twenty Five Thousand (US$ 1,025,000.00) dollars of the
                     United States of America.

            3.1.2    Second Deployment Group

                     The portion of the Purchase Price for the Products included
                     in the second Deployment Group shall be Eight Hundred
                     Ninety Thousand (US$ 890,000.00) dollars of the United
                     States of America.

            3.1.3    Third Deployment Group

                     The portion of the Purchase Price for the Products included
                     in the third Deployment Group, shall be One Million Five
                     Hundred Sixteen Thousand (US$ 1,516,000.00) dollars of the
                     United States of America.

            3.1.4    Fourth Deployment Group

                     The portion of the Purchase Price for the Products included
                     in the fourth Deployment Group, shall be One Million Nine
                     Hundred and Nine Thousand (US$ 1,909,000.00) dollars of
                     the United States of America.

       3.2    Purchaser shall pay Vendor the Purchase Price in accordance with
              the following payment schedule:

            3.2.1    Fifteen (15) percent of the Purchase Price of each partial
                     or total shipment shall be paid before the date of
                     shipment.

            3.2.2    Eighty-five (85%) percent of the Purchase Price of each
                     partial or total shipment delivered FOB, upon presentation
                     of invoice and shipping documents.

<PAGE>

Purchase and Sale Agreement                                               Page 5

       3.3    The eighty-five (85%) percent part of the Purchase Price
              (hereinafter "Financed Purchase Price") shall be paid by means of
              a financing arrangement described in Exhibit C hereto.

       3.4    By entering into this Agreement; Purchaser agrees to the financing
              contemplated In Exhibit C and will enter into all such contracts
              and other documentation as are contemplated in Exhibit C. Exhibit
              C refers to certain guarantees. Purchaser agrees that in the event
              Vendor and/or any other party obligated on any guarantee referred
              to therein makes one or more payments under any such guarantee,
              Purchaser shall be unconditionally obligated to reimburse Vendor
              and any other such party the full amount of all such payments,
              together with interest thereon and all other sums payable in
              connection therewith pursuant to the agreement or agreements to be
              entered into in connection with the financing contemplated in
              Exhibit C.

       3.5    Purchaser shall reimburse Vendor for hotel, meals, transportation
              (including air travel) and administrative expenses, Incurred for
              the performance of services of training, installation and
              maintenance of the Products described in this Agreement. Such
              services shall be rendered by Vendor with no additional charges
              other than the ones mentioned herein.

       3.6    The reimbursements to Vendor mentioned in this Clause shall be
              made by Purchaser on the fifth (5th) business day of the month
              subsequent to that in which expenses were incurred.

4         Delivery

       4.1    Products shall be manufactured by Vendor and delivered to
              Purchaser in accordance with the schedule contained in Exhibit D
              hereof.

       4.2    Purchaser and Vendor together with Singer shall revise quarterly
              the configuration and delivery of all items of the Products and
              Services to be supplied by Vendor and Singer.

       4.3    Delivery of the Products to Purchaser shall be deemed completed
              when the respective Product is delivered to carrier at the
              shipping point specified in Exhibit D hereto (FOB, per INCOTERMS
              1990), at which time all risks of loss or damage shall be borne by
              Purchaser.

       4.4    Purchaser shall be responsible for arranging for the importation
              of the Products into the respective country of destination and for
              subsequent delivery to the installation sites (hereinafter
              "Installation Sites"), and for all the associated costs.

<PAGE>
          Purchase and Sale Agreement                                     Page 6

       4.5    Purchaser shall be responsible for locating and adequately
              preparing the Installation Sites for the receipt and operation of
              the Products. Failure to have an Installation Site fully prepared
              for the installation of the Product shall render Purchaser liable
              for all additional costs and expenses incurred by Vendor and/or
              Singer as a result thereof.

5      Warranties and Limitations

       5.1    Vendor warrants, for the benefit of Purchaser only, that, at the
              time of completion of delivery of the Products, the Products shall
              conform in all material aspects to the specifications set forth in
              Exhibit B hereto Vendor does not warrant that the operation of the
              products will be error free.

       5.2    As Purchaser's exclusive remedy for any nonconformity or defect in
              the Products, Vendor shall during the 18-month period following
              the delivery of the Products, or 12 months after installation,
              whichever occurs first, correct or cure such nonconformity or
              defect. Purchaser acknowledges that Vendor may require Purchaser
              to deliver defective Product to Vendor's authorized service
              centers for maintenance or repair.

       5.3    For non-conformities or defects during the warranty period
              Purchaser shall send, at its own expense, the respective Products
              for maintenance or repair to Vendor's authorized service centers;
              or to:

                           Promon Electronica da Amazonia Ltda.
                           Avenida Barbosa da Cunha, 309 Parte B -
                             Bairro Guanabara
                           CEP 13070 Campinas - S.P. Brasil

              In this case, Vendor shall repair the Products within thirty (30)
              days after receipt of the Products at the address specified above
              and shall, at its own expense, provide for shipment to the
              Installation Site indicated by Purchaser, except if any or all the
              conditions set forth in 5.4 below apply.

       5.4    Vendor shall bear no responsibility for correcting, curing, or
              otherwise remedying any nonconformity or defect in the Products if
              any or all of the following conditions apply: (1) the Products are
              not properly installed; (2) the Products are not maintained and
              operated under normal and specified conditions by qualified
              personnel; (3) the Products incorporate spare or replacement parts
              other than those purchased under this Agreement; (4) the Products
              have been altered, abused, misused or taken apart; (5) the
              nonconformity or defect has not been reported to Vendor within
              such 12-month period; (6) the non-conformity or defect has arisen
              as a result of damage to the Products occurring subsequent

<PAGE>

Purchase and Sale Agreement                                               Page 7

              to delivery of the Product; or (7) the non-conformity or defect is
              not provenly due to Vendor's sole fault.

       5.5    With the sole exception of the preceding undertakings, VENDOR
              DISCLAIMS ANY AND ALL PROMISES, REPRESENTATIONS AND WARRANTIES,
              EXPRESS OR IMPL1ED, WITH RESPECT TO THE PRODUCTS (INCLUDING,
              WITHOUT LIMITATION, THE EQUIPMENT AND THE PROGRAMS EMBEDDED
              THEREIN), INCLUDING ITS CONDITION, THE EXISTENCE OF ANY LATENT OR
              PATENT DEFECTS, AND ITS MERCHANTABILITY OR FITNESS FOR ANY
              PARTICULAR USE, SATISFACTORY QUALITY, AGAINST INFRINGEMENT OR
              ARISING FROM A COURSE OF DEALING, USAGE, OR TRADE PRACTICE, ALL OF
              WHICH ARE HEREBY EXCLUDED TO THE EXTENT ALLOWED BY APPLICABLE LAW.
              VENDOR FURTHER DISCLAIMS ANY AND ALL PROMISES, REPRESENTATIONS,
              AND WARRANTIES, EXPRESS OR IMPLIED, WITH RESPECT TO THE NATURE AND
              QUALITY OF ANY OTHER PERFORMANCE BY VENDOR HEREUNDER.

       5.6    Liability of Vendor for breach of any and all warranties hereunder
              is expressly limited to the repair, replacement or refund of the
              purchase price of defective products as set forth in this section,
              and in no event shall Vendor be liable for special, incidental or
              consequential damages by reason of any breach of warranty or
              defect in materials or workmanship. Vendor shall not be
              responsible for repair, replacement refund of purchase price of
              products which have been subjected to neglect, accident or
              improper use, or which have been altered by other than authorized
              Vendor personnel.

              Vendor's warranty obligations and Purchaser's remedies thereunder
              are solely and exclusively as stated herein. In no case shall
              Vendor be liable for indirect kinds of damages, including but not
              limited to special, incidental, punitive, and consequential
              damages, or loss of capital, revenue, or profits. In no event
              shall Vendor's liability to Purchaser, or any party claiming
              through Purchaser, be in excess of the actual sales price paid by
              Purchaser for any items supplied hereunder.

       5.7    Notwithstanding any other provisions of this contract, under no
              circumstances shall either party be liable to the other party or
              any third party claiming under the other party for special,
              incidental, indirect, punitive, or consequential damages, as a
              result of a breach of any provision of this contract. Purchaser
              hereby Indemnities Vendor against all loss or liability from
              claims by customer or a third party arising out of or relating to
              Purchaser's installation, operation, or use of the equipment,
              whether on account of negligence or otherwise.

<PAGE>
Purchase and Sale Agreement                                               Page 8

       5.8    Notwithstanding anything herein to the contrary, in no event shall
              Vendor be liable to Purchaser for any loss of use, loss of data,
              anticipated revenues or profit, whether caused directly or
              indirectly; any incidental, special, or consequential damages; or
              any claims or actions brought against Purchaser by any third
              party.

       5.9    The Programs, as defined in Exhibit A hereto, shall be considered
              as part of the Products, for all purposes of this Agreement, being
              subject to the same limitations, including, but not limited to,
              warranty restrictions and liability cap. IN ADDITION, BY
              INITIALING EXHIBIT A HERETO, PURCHASER SHALL BE DEEMED TO HAVE
              FULLY UNDERSTOOD AND AGREED TO THE "LICENSING CONDITIONS FOR THE
              PROGRAMS" CONTAINED THEREIN.

6         Vendor Substitution

       6.1    Vendor, at its sole discretion, may perform all or part of its
              obligations hereunder through its wholly owned subsidiary Promon
              Electronica da Amazonia Ltda. (hereinafter "Vendor's Subsidiary"),
              and may instruct Purchaser in writing to pay Vendor's Subsidiary
              directly, with the understanding that Vendor shall cause Vendor's
              Subsidiary to be bound by all of the terms and conditions of this
              Agreement and it is further agreed that Vendor shall remain
              jointly and severally with Vendor's Subsidiaries for the latter's
              responsibilities hereunder.

7         Training and User Materials

       7.1    Vendor shall provide Purchaser training services (described in
              Exhibit E hereto), free of charge, to selected Purchaser qualified
              personnel, up to 15 people. All other costs and expenses
              associated with the training, such as, without limitation, travel
              and living expenses, shall be for the account of Purchaser.

       7.2   Vendor may from time to time furnish Purchaser diagrams,
             specifications, documentation and other materials, including user
             manuals related to the use and servicing of the Products. Vendor
             reserves all right, title and interest in such materials, including
             without limitation all intellectual property rights.

       7.3   The documentation and user manuals will be supplied by the Vendor
             in the official language of the country of destination of the
             equipment.

<PAGE>

Purchase and Sale Agreement                                               Page 9

                                    PART III
                               GENERAL PROViSIONS
8      Termination

       Either Vendor or Purchaser may terminate this agreement immediately
       without need of previous judicial or arbitration resolution, in the event
       that the other party (a) has materially breached any of its obligations
       under the Agreement and alter notification thereof does not remedy the
       breach within thirty (30) days or (b) has been adjudged a bankrupt, has
       become insolvent by any test, has filed any petition in any court of
       bankruptcy or equivalent court for receivership, reorganization,
       bankruptcy, arrangement or relief from debts or creditors, or for any
       other relief whatsoever, has had any such petition filed against it, or
       has made any assignment for the benefit of creditors or has any
       substantial part of its assets subjected to any involuntary lien which is
       not removed within thirty (30) days after notice thereof.

9      Waiver

       No delay or failure by either Party in exercising any right under this
       Agreement, nor any partial exercise thereof, shall be deemed to
       constitute a waiver of said right or of any other right.

10     Effect of Breach

       10.1   In addition to any other rights, privileges, power or remedies of
              Vendor hereunder or under law, upon the occurrence of a breach of
              the Agreement or of any other event which gives rise to the
              Vendor's right to terminate the Agreement, the Purchaser shall
              remain liable for any and all monetary or financial obligations
              arising under this Agreement and Vendor shall have the right to
              accelerate and declare all obligations of the Purchaser to be due
              and payable by Purchaser as a liquidated sum and to proceed
              against the Purchaser and/or repossess so much of the Products as
              remain in its possession.

       10.2   Force Majeure

              Vendor and Singer shall not be responsible for delays or failures
              in its performance hereunder resulting from Acts of God,
              earthquakes, shortages of supplies, transportation difficulties,
              labor disputes, riots, war, fire, epidemics, and any acts,
              omissions or events beyond its control. Performance times under
              this agreement shall be extended for

<PAGE>

Purchase and Sale Agreement                                              Page 10

              a period of time equivalent to the time lost because of a delay
              which is excusable under this provision.

11     Severability

       Should any condition or term, or any part thereof, contained in this
       Agreement be unenforceable or prohibited by law or by any present or
       future local, municipal, provincial/state or national/federal
       legislation, then such Article, condition, term or part thereof, shall be
       amended, and is hereby amended so as to be in compliance with said
       legislation or law but, if such Article, condition or term, or part
       thereof cannot be amended so as to be in compliance with any such
       legislation or law then such Article, condition, term or part thereof
       shall be deemed severed from this Agreement, and all the rest of the
       Articles, terms and this Agreement, shall remained unimpaired.

12     Assignments

       Except as otherwise expressly provided herein, neither this Agreement nor
       any of the rights and obligations contained therein may be assigned by
       either party without the prior written consent or the other parties.

13     Governing Law and Venue

       This Agreement has been entered into and shall be governed in accordance
       with the laws of the State of New York, USA. The parties irrevocably and
       unconditionally submit to the jurisdiction of the courts of New York, NY,
       USA.

14     Notices

       All notices required or permitted under this Agreement will be in writing
       and will be deemed received when (a) delivered personally; (b) when sent
       by confirmed telex or facsimile (followed by the actual document in air
       mail/air courier); (c) three (3) days after having been sent by
       registered or certified mail, return receipt requested, portage prepaid
       (or ten (10) days for international mail); or (d) one (1) day alter
       deposit with a commercial express courier specifying next day delivery
       or, for international courier packages, two (2) days after deposit with a
       commercial express courier specifying 2-day delivery, with written
       verification of receipt, to the address set forth below:

<PAGE>

Purchase and Sale Agreement                                              Page 11

Purchaser:
Globaltron Communications Corporation
45 Broadway, Floor 12
New York, NY
USA

Vendor:
Tropico Sistemas e Telecomunicacoes S.A
Av. Selma Parada, 201 (Galleria Office Park, Ed 4)
Campinas-SP-Brasil

Singer:
Singer Products Inc.
1840 West 49th Street, Suite 501
Hialeah, FL 33012

15     Taxes

       All prices and charges stated herein are exclusive of any taxes, fees and
       duties or other amounts, however designated, and including without
       limitation value added and withholding taxes which are levied or based
       upon prices and charges or upon this Agreement outside of Brazil.
       Purchaser shall report and pay all federal, state, and local taxes,
       (excluding only those taxes based on the net income derived by Vendor and
       Singer), duties and amounts designated, levied, or based (1) upon the
       Product and the Purchase Price, or any other amounts payable under this
       Agreement; (2) on account of this Agreement; or (3) with respect to the
       Products, the Programs, or the acquisition, ownership, or use thereof by
       Purchaser. Purchaser shall indemnify and hold harmless Vendor and Singer,
       from all claims and liability resulting from Purchaser failure to report
       or pay such amounts.

16     Entire Agreement, Modifications.

       This Agreement including all exhibits hereto, which are hereby
       incorporated herein by this reference, constitutes the entire agreement
       between the parties hereto with respect to the subject matter hereof and
       supercedes any and all prior contemporaneous representations, proposals,
       agreements, negotiations, advertisements, statements, or understandings,
       whether oral or written. No amendment to this Agreement shall be binding
       on the Parties unless such amendment is in

<PAGE>
Purchase and Sale Agreement                                              Page 12

       writing and executed by authorized representatives of the Parties to this
       Agreement.

IN WITNESS WHEREOF, the Parties have caused this Agreement to be executed by
their respective authorized Representatives, in three identical counterparts,
each of which shall be deemed an original.
<TABLE>
<CAPTION>
<S>                                                   <C>
Global Communications Corporation                     By:  /s/ Gary Morgan
----------------------------------------                   ------------------------
Gary Morgan                                           Title: President

Tropico Sistemas e Telecomunicacoes S.A.              By:
----------------------------------------                  -------------------------
Luiz Augusto C. de Aquino                             Title: Director

Tropico Sistemas e Telecomunicacoes S.A.              By: /s/ Arnaldo Coutinho Costa
----------------------------------------                  --------------------------
Arnaldo Coutinho Costa                                Title: Business Director

Singer Products Inc.                                  By:
---------------------------------------                   --------------------------
Jaime Rojas                                           Title: Director

</TABLE>

<PAGE>

Purchase and Sale Agreement                                              Page 13

                                LIST OF EXHIBITS
                                ----------------

Exhibit A:        Quantity and Prices for Equipment and Vendor Services

Exhibit B:        Vendor Proposal to Globaltron Including Product Specifications

Exhibit C:        Finance Term Sheet

Exhibit D:        Project Schedule and Delivery Dates for Products

Exhibit E:        Training

Exhibit F:        Licensing Conditions for the Programs

<PAGE>
<TABLE>
<CAPTION>

                                   EXHIBIT - A

              QUANTITY AND PRICES FOR EQUIPMENT AND VENDOR SERVICES
----------------------------------------------------------------------------------------------------------------------
                                                       E1s QUANTITY
                                                       ------------
DEPLOY              SITES                        TOTAL        V 5.2            DESCRIPTION                EQ. PRICES
----------------------------------------------------------------------------------------------------------------------
<S>                                                <C>         <C>              <C>                       <C>
   1              Medellin                         80           -             Transit Switch              400,000.00
                  New York                         80           -             Transit Switch              400,000.00
                  Lima Peru                        40           -             Transit Switch              225,000.00
----------------------------------------------------------------------------------------------------------------------
               TOTAL DEPLOYMENT GROUP 1                                                                 1,025,000.00
----------------------------------------------------------------------------------------------------------------------
   2              Bogota                          113          47             Local Switch                430,000.00
                  Cali                             85          36             Local Switch                336,000.00
                  Cartagena                        28          12             Local Switch                124,000.00
----------------------------------------------------------------------------------------------------------------------
               TOTAL DEPLOYMENT GROUP 2                                                                   890,000.00
----------------------------------------------------------------------------------------------------------------------
   3              Medellin                         57          24             Local Switch                238,000.00
                  Barranquilla                     57          24             Local Switch                238,000.00
                  New York                        120           -             Transit Expansion           500,000.00
                  Medellin                         80           -             Transit Expansion           360,000.00
                  Lima Peru                        40           -             Transit Expansion           180,000.00
----------------------------------------------------------------------------------------------------------------------
               TOTAL DEPLOYMENT GROUP 3                                                                 1,516,000.00
----------------------------------------------------------------------------------------------------------------------
                  New York                        130           -             Transit Expansion           515,000.00
                  Bogota                           97          40             Local Expansion             388,000.00
                  Cali                             80          33             Local Expansion             284,000.00
                  Cartagena                        25          12             Local Expansion             102,000.00
                  Bucaramanga                      28          12             Local Switch                124,000.00
                  Pereira                          28          12             Local Switch                124,000.00
                  Cucuta                           28          12             Local Switch                124,000.00
                  Villavicencio                    28          12             Local Switch                124,000.00
                  Santa Marta                      28          12             Local Switch                124,000.00
----------------------------------------------------------------------------------------------------------------------
               TOTAL DEPLOYMENT GROUP 4                                                                 1,909,000.00
----------------------------------------------------------------------------------------------------------------------
          TOTAL AMOUNT - FOR MANAUS (Brasil)  US$                                                       5,340,000.00
----------------------------------------------------------------------------------------------------------------------
</TABLE>
Note:  The number E1's include: V5.2 interface, routings, MSA, Value added
services and VoIP trunks.

The prices include factory services.

<PAGE>
<TABLE>
<CAPTION>

                        SINGER PRODUCTS INC. & CIA. LTDA
------------------------------------------------------------------------------------------------------------------------------------
Cra. 9A No. 91 - 27 Bogota, D.C. Colombia
Conmutador: 610 3400 SPC- Fax: 218 6640
A.A. No. 54902   cables "COREGNIS"
------------------------------------------------------------------------------------------------------------------------------------
<S>                          <C>                        <C>        <C>     <C>        <C>         <C>
REMISION No.                TRABAJO NO.                           FECHA               PAGINA
                                                        MES       DIA      ANO          DE

                                                         07         31     2000      1      1
------------------------------------------------------------------------------------------------------------------------------------
                                                        FACTURA CAMBIARIA
                                                        DE COMPRA VENTA         15968
------------------------------------------------------------------------------------------------------------------------------------
                                                        NIT 860 031 240 4                         Facluracion Autorizada por la
                                                        IVA REGIMEN COMUN                         DIAN Segun Resolucion No.
                                                        NO Somos agenles relenedores del IVA      300000071315 de 1998/08/12
                                                        Condigo Actividad ICA                     Numeracion de 15101 al 16100
                                                        204 Ventas 0.8%
                                                        304 Servicios 0.7%
------------------------------------------------------------------------------------------------------------------------------------
PEDIDO DEL CLIENTE No.                FECHA PEDIDO REFERENCIA SPC No.                             GRUPO

Contract Dated   7-11-00
------------------------------------------------------------------------------------------------------------------------------------
VENDIDO A: Globaltron Communications Corporations                         DESPACHADO A: Mrs. Arlene Margolis
           New World Tower, 100 North Biscayne Boulevard,                 Administration Vice president
           Suite 2500
           Miami, FL
CONDICIONES DE PAGO
     Payment terms
     ten (10) days of Invoice presentation
------------------------------------------------------------------------------------------------------------------------------------
IDENTIFICATION DEL CLIENTE                                            MARCAS:
------------------------------------------------------------------------------------------------------------------------------------
DESPACHADO VIA:          FECHA DE DESPACHO        DESPACHADO DE       REFERENCIA DE DESPACHO No.         ASEGURADO POR.
------------------------------------------------------------------------------------------------------------------------------------
ITEM    CANTDAD                                    DESCRIPCION                          PRECIO UNITARIO                 TOTAL
------------------------------------------------------------------------------------------------------------------------------------
  1        -             First Payment of telephony switches services
                         item 1 of services agreement                                             UDS                173.600.00

  2        -             First payment of software systems services,                              USD                118,900.00
                         item 2 of services agreement

------------------------------------------------------------------------------------------------------------------------------------
SON:    Three hundred thirty six thousand three hundred and seventy five dollars with 00/00     SUB-TOTAL        $   292,500.00
------------------------------------------------------------------------------------------------------------------------------------
Esta factura se asimila en todos sus einclos legales a la letra de cambio Articulo 774 del          IVA
Codigo de Comercio                                                                              USD_____%             43.875.00
------------------------------------------------------------------------------------------------------------------------------------
RECIBI CONFORME                                          REVISADO POR

                                   FIRMA SELLO
------------------------------------------------------------------------------------------------------------------------------------
FECHA      NOMBRE:                                                                              TOTAL $USD           336.375.00
------------------------------------------------------------------------------------------------------------------------------------
</TABLE>LICENSE AGREEMENT

This License Agreement (hereinafter "Agreement") is entered Into as of July 11,
2000 by and among Globaltron Communications Corporation, a company
incorporated under the laws of Florida with principal offices located at New
World Tower, 100 North Biscayne Boulevard, Suite 2500, Miami, Florida,
U.S.A., (hereinafter "Licensee") CPqD Technologies and Systems, Inc. a
corporation incorporated under the laws of Delaware, U.S.A., with headquarters
located at 111 North Market Street, San Jose, California, U.S.A. (hereinafter
"Licensor"), and Singer Products Inc., a company incorporated under the laws of
Florida, USA, with principal offices located at 1840 West 49th) Street, Suite
501, Hialeah, Florida, U.S.A. and acting herein both in its capacity as
Authorized Sales Representative of CPqD (hereinafter "Singer").

WHEREAS, the Parties herein on May 13, 2000 signed a Memorandum of Understanding
(hereinafter "MOU") in which the licensing of certain software were
contemplated.

WHEREAS, the Parties desire to commence the partial execution of the objectives
of the MOU.

NOW, THEREFORE, in consideration of the mutual agreements and promises
contained in this Agreement, the parties agree as follows:

                                     PART I
                                    SOFT WARE

1.    Systems

      1.1.     The Licensor grants to Licensee the right to use certain
               Licensor's computer programs (Operations Systems) and associated
               documentation, listed below and specified In more detail
               Exhibit A (hereinafter "Systems")
                   I Copy of PROMUS V 2.4.
                   I Copy of FLEX FLOW V2.1.
                   I Copy of SAGRE V 4.5.2.
                   I Copy of SGE V 8.11.

      1.2.     Except where it conflicts with the terms and conditions of this
               Agreement the Licensor proposal to Licensee (Operations Systems
               Solution Proposal) set forth in Exhibit B hereto is made a part
               of this Agreement.

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License Agreement                                                       Page 2

      1.3.    The definitions set forth in Exhibit C hereto are adopted for the
              purposes of this contract.

2.    Software Use License

      2.1.     The license given to Licensee to utilize the Systems is
               restricted for use exclusively in operations related to its own
               business as well as their utilization by afiliates per clause
               5.15, and shall not be used for sub-licensing or for the direct
               rendering of support services for third parties.

      2.2.     During the term of this Agreement the use of the Systems will be
               limited to a maximum number of forty thousand (40,000)
               subscribers while the SAGRE System is limited to ten (10) users
               for engineering, as specified in Licensor's Proposal.

      2.3.     Licensee may sublicense the Systems for use by affiliate
               companies, as agreed on Clause 5.15, provided that Licensee
               assures that all conditions of this Agreement are complied with
               by the sub-Licensee. Licensee will inform, in writing of such
               sub-licensing within ten (10) days of such authorization,
               submitting a copy of the respective documentation to Licensor.

3. Services

      3.1.     Support, implementation, training and corrective and updating
               maintenance services will be provided to Licensee by Licensor
               directly or through Singer for those Systems licensed under the
               following conditions:

            3.1.1. Maintenance services shall include "help desk" and corrective
                   and updating maintenance. Corrective maintenance refers to
                   correction of any parts of the Systems that may be defective.

               3.1.1.1.    In the event the defect Is the result of, but not
                           limited to: i) negligence or lack of skill on the
                           part of Licensee users; ii) faults in the
                           computational platform in the basic software and/or
                           on the data bank manager; iii) improper use or use
                           that does not conform with the recommendations
                           contained in Exhibits hereto, and/or iv) the
                           connection with other software and/or equipment, it
                           is agreed that the time spent in the respective
                           correction will be considered consulting services
                           rendered, subject to payment of the daily rate

<PAGE>

License Agreement                                                       Page 3

                          established in Clause 5.10 as well as to the
                          reimbursement of expenses incurred by Licensor and or
                          Singer.

            3.1.1.2.      During the term of this Agreement Licensor will make
                          available to Licensee the Improvements and updates of
                          the Systems, as long as they do not result from an
                          improvement request unique to another company.

            3.1.1.3.      When requested by Licensee the implementation of
                          improvements into the Systems utilized by it may be
                          carried out by Licensor, according to terms and
                          conditions to be negotiated by the parties and it is
                          agreed that the results of developments done by
                          Licensor will be its own exclusive property.

            3.1.1.4.      The Licensor requires remote access to the Systems
                          via Internet to support Maintenance Services. Help
                          Desk services will be provided up to a limit of
                          ninety (90) hours per month.

              3.1.2.   Service will be provided for the installation of the
                       Executable Program Systems onto the computational
                       platform (hardware and basic software including software
                       tools) to be supplied and made available by Licensee on
                       its premises, that shall contain specifications
                       compatible with the Systems provided to perform the
                       services requested.

                   3.1.2.1.     Training services will be rendered only once for
                                each of the courses, according to details
                                furnished in Exhibit D hereto. The Licensor will
                                supply to Licensee detailed List of Courses
                                within thirty days from Contract signature.

                   3.1.2.2.     Additional training may be carried out as agreed
                                to between the parties.

              3.1.3.   During the Systems implementation period, Licensor will
                       provide consulting services to study and develop
                       specifications for integration with other software used
                       by Licensee, as well as to adjust the use of the Systems
                       to the specific needs of Licensee operations. This
                       contract includes up to five thousand four hundred and
                       eighty (5,480) hours for customization, localization and
                       development of parameters. The time for commencing and
                       duration of this activity shall be agreed by the parties
                       to define the scope of work and priorities of
                       implementation of the Systems. Once the number of hours

<PAGE>

License Agreement                                                       Page 4

                       included in this contract are completed, the rates agreed
                       in Clause 5.10 shall be applied.

              3.1.4.   Other  consulting  services  may be tendered by Licensor
                       and/or  Singer as agreed to by the parties.

4. Duration and Delivery

       4.1.     The term of software  license under this Agreement Is five (5)
                years  commencing from the effective date thereof, as agreed in
                Clause 5.16.

       4.2.     The Systems and related services shall be delivered by Licensor
                to Licensee in accordance with schedule contained in Exhibit E
                hereto. Exhibit E is preliminary and the parties agree to meet
                to revise the project schedule.

       4.3.     Additionally, Licensee and Licensor shall revise quarterly the
                Systems configuration and delivery of all items of the Systems
                and Services to be supplied by Licensor and Singer.

5. Price and Payments.

      5.1.   The purchase price for the Systems (hereinafter "License Price")
             for the license to use computer programs, services and training,
             detailed in Exhibit D of this Agreement shall be Four million six
             hundred fifty-eight thousand seven hundred and fifty ($4,658,150)
             United States dollars (hereinafter "License Price"), divided as
             follows:

          5.1.1.   Licensee will pay to Licensor Three million five hundred
                   thousand ($3,500,000) United States dollars for the license
                   to use the Operations Systems.

          5.1.2.   For training services, Licensee will pay Licensor One hundred
                   thirty one thousand two hundred and fifty ($131,250,000)
                   United States dollars corresponding to seven hundred (700)
                   hours of training for the courses detailed In Exhibit D.

          5.1.3.   For services of implementation and development of parameters
                   Licensee will pay Licensor One million twenty-seven thousand
                   five hundred ($1,027,500) United States dollars corresponding
                   to five thousand four hundred eighty (5,480) hours of
                   services for customization and localization.

       The payments by Licensee to Licensor will be made as follows:

<PAGE>

License Agreement                                                        Page 5

                  5.2.1. Operations Systems:

                         5.2.1.1.    Fifteen (15) percent of the License Price
                                     of each partial or total delivery shall be
                                     paid prior to each delivery.

                         5.2.1.2.    Eighty five (85) percent of the License
                                     Price of each partial or total delivery of
                                     Systems is to be paid upon presentation of
                                     invoice and shipping documents.

                  5.2.2. Training, implementation and development Services:

                         5.2.2.1.   Fifteen  (15)  percent of the  Purchase
                                    Price is to be paid to the  scheduled
                                    date of initiation of Services.

                         5.2.2.2.   Eighty five (85) percent of the Purchase
                                    Price of each partial delivery of Services
                                    is to be paid partially, as work progresses
                                    according to the schedule on Exhibit E,
                                    upon invoice presentation.

             5.3.    The eighty five (85) percent part of the Purchase Price
                     (hereinafter "Financed Purchase Price") shall be paid by
                     means of a financing arrangement described in Exhibit F
                     hereto.

            5.4.      By entering into this Agreement, Licensee agrees to the
                      financing contemplated In Exhibit F and will enter into
                      all such contracts and other documentation as are
                      contemplated in Exhibit F. Exhibit F refers to certain
                      guarantees under the heading "CPqD Guarantee". Licensee
                      agrees that in the event Licensor and/or any other party
                      obligated on any guarantee referred to therein makes one
                      or more changes under any such guarantee, Licensee shall
                      be unconditionally obligated to reimburse Licensor and any
                      other such party the full amount of all such payments,
                      together with interest thereon and all other sums payable
                      in connection therewith pursuant to the agreement or
                      agreements to be entered into in connection with the
                      financing contemplated in Exhibit F.

            5.5.     The license granted  hereunder allow usage for the
                     processing  restricted up to forty thousand (40,000)
                     subscribers for the Systems.

            5.6.     For usage above this limit, Licensee shall pay to Licensor
                     an additional four ($4.00) United States dollars per year,
                     for each subscriber. The increments will be applicable to
                     minimum groups

<PAGE>

License Agreement                                                       Page 6

                      of 100 subscribers. The dates in which these increments
                      will be due shall be negotiated by the parties. In the
                      case of Value Added Services the Licensee shall pay
                      Licensor an additional two ($2.00)United States dollars
                      per each additional subscriber in increments of two
                      hundred (200) subscribers.

                5.6.1.    The number of subscribers must be reported on a
                          quarterly basis to CPqD, who reserves the right to
                          perform periodical auditing in order to verify the
                          quantity of existing subscribers in the systems'
                          database. When the number of subscribers is greater
                          than the number contracted at the time, the amount
                          related to the increase will be charged retroactively
                          from the date of the increase.

            5.7.     For the other services listed an Clause 3.1 above Licensee
                     will pay Licensor and/or Singer One Thousand Five Hundred
                     ($1,500) United States dollars per day per each (1)
                     professional assigned to perform such services. In addition
                     to this payment Licensee shall reimburse expenses incurred
                     by Licensor with respect to hotel, food, transportation
                     (including air travel) and administrative costs.

            5.8.     Licensee shall reimburse Licensor or Singer for hotel,
                     meals, transportation (including air travel) and
                     administrative expenses, incurred for the performance of
                     services of training, installation and maintenance of the
                     Systems described in this Agreement. Such services shall be
                     rendered by Licensor or Singer with no additional charges
                     other than the ones mentioned herein.

            5.9.     The reimbursements to Licensor or Singer mentioned in this
                     Clause shall be made by Licensee on the fifth (5th)
                     business day of the month subsequent to that in which
                     expenses were incurred.

            5.10.    Maintenance services in 3.1.1 will be performed by Licensor
                     without additional charges to Licensee except for those
                     described in 5.11 above.

            5.11.    The payments established in this Clause grants the Licensee
                     the right to use the Systems only for Licensee own use and
                     affiliated companies, for the use of the Systems beyond
                     this limit the parties will agree on the terms and
                     conditions for doing so.

            5.12.    The payment terms for the amounts stipulated in this
                     Clause 5 may be revised by an addendum hereto in order to
                     adjust them to the parameters that may regulate the terms
                     of the designated

<PAGE>

License Agreement                                                       Page 7

                     financial institution. For the purpose of this Agreement is
                     conveyed that an affiliate is a business which is
                     controlled by the license or a joint venture in which
                     Licensee holds a minimum of forty (40) percent equity.

          5.13.      After expiration of this period of July 2000 through June
                     2005, as agreed In clause 4.1, the Annual Renewal License
                     fee will be fifteen (15) percent of the prevailing price,
                     not to exceed CPI value or Licensor's market price
                     whichever is lower.

6.   Licensee Obligations

     6.1. Licensee shall not use or make copies of the Systems for any purpose
          other than the one specified in this Agreement and shall not (a) use
          the Systems to process third parties' data, (b) rent, distribute
          electronically, or share the use of the Systems or market the Systems
          through interactive cables or remote processing services, or
          distribute the Systems in any form not specifically authorized in this
          Agreement.

     6.2. The parties agree that the Systems, its updates and the associated
          documentation are the property of Licensor and that no property right
          of the Systems or of any parts thereof are transferred by this
          Agreement. In case of termination as established in Clause 10 or non
          renewal of the License according to Clause 5.16, Licensee shall return
          or destroy the Systems and all parts and copies thereof, as well as
          all of the documentation and to issue a declaration so certifying.

     6.3. Licensee agrees to promptly inform Licensor in writing of any failure
          found in the Systems, including malfunctioning, inconsistency,
          transcription errors, and incompatibility, so that Licensor provides
          immediate action according to standards of the software industry.

     6.4. Licensee agrees to allow Licensor directly or through expert third
          parties, by previous notice and at its own cost and expense, to carry
          out directly or indirectly audits related to the activities of the
          Licensee with respect to the license during the term of this
          Agreement, and thereafter for a period of five years, beginning on the
          date of expiration or cancellation of this Agreement. The performance
          of the audit cannot be delegated to a firm that is a competitor of
          Licensee.

     6.5  Licensee agrees to immediately notify Licensor of any material change
          which occurs in the management, ownership or control of Licensee.

<PAGE>

License Agreement                                                      Page 8

      6.6.  Licensee shall not make or allow to be made modifications, copies,
            reverse engineering disassembly of the Systems nor to duplicate them
            except for one copy for "back up" security.

      6.7.  During the first five (5) business days of each calendar quarter,
            Licensee agrees to inform Licensor of the new amount of subscribers
            being serviced on the network.

      6.8.  Licensee agrees that the Systems must not be used for the purpose of
            clearing house services for third parties.

      6.9.  Licensee agrees that associated documentation and the systems
            contain valuable and confidential information that are the exclusive
            property of Licensor.

      6.10. The parties agree not to cede to third parties, under any
            circumstances, the rights that are attributed to them by this
            Agreement and/or Addenda, even if they be its shareholders, agents
            or distributors, subsidiaries or companies under its control, unless
            previously authorized in writing by Licensor.

      6.11. Licensee agrees to inform Licensor, in writing, in the event of
            declaration of bankruptcy, filing for protection, or judicial or
            extra judicial dissolution or liquidation of the company.

      6.12. Neither party shall be held contractually, civil or criminally
            liable for indirect, potential or consequent special damage, or for
            profit loss, caused to the other, except if caused by malice or bad
            faith, including on the part of its employee, so long as proven in
            court citing malevolence.

      6.13. Licensee understands and agrees that Licensor shall not be held
            liable for any damages, be they direct, indirect, accidental or
            consequent, arising from the use by Licensee of the Systems and
            Associated Programs.

      6.14. Licensee will not make public any results of comparative or
            performance tests of the Systems, without express authorization by
            Licensor.

      6.15. Licensee is responsible for making available the computational
            platform and its interconnections, as well as the basic Software of
            data base management, geo-referenced Information system (GIS), as
            well as software for bill printing. Additionally, Licensee shall be
            responsible for providing outside plant and market data in a
            compatible magnetic format (SAGRE compliant) for usage with the
            SAGRE product. In the event that

<PAGE>

LIcense Agreement                                                       Page 9

            data conversation shall be required, then this data conversation
            shall be the responsibility of the Licensee.

      6.16. Licensee agrees, within a period to be agreed between the parties,
            to make available persons to adjust the Systems to the language and
            the applicable legislation of the countries of deployment, without
            charge to Licensor, it being agreed that the results of these
            adaptations and of the translation will become the property of
            Licensor.

      6.17. Licensee shall be responsible for arranging for the importation of
            the Systems into the respective country of destination and for
            subsequent delivery to the installation sites, and for all the
            associated costs.

      6.18. Licensee agrees to allow Licensor to visit its facilities in order
            to demonstrate the functions of the Systems to prospective new
            Licensee with no charge to Licensor.

7. Licensor's Obligations

      7.1.  Licensor shall furnish the Systems and associated Technical
            Documentation to Licensee, however, Licensor does not guarantee that
            Systems will meet the needs of the business of Licensee, nor that
            their operations will be free of interruptions or errors, in which
            case Licensor's will do its best effort to assist Licensee or to
            correct such errors if they are covered under the Product warranty,
            according to standards of the software industry.

      7.2.  In the event third parties question the intellectual property rights
            of Licensor to the Systems and related materials, Licensor, at its
            own expense, will endeavor to remove the causes of the claim, by
            whatever legal means it deems necessary, including any of the
            following actions: i) to obtain for Licensee the right to continue
            to use the Systems; ii) to alter the Systems so that it will no
            longer infringe on the third party's rights or; iii) to defend
            Licensee in the cases of direct claims against the latter, and
            Licensor will be responsible for court costs and attorney's fees.

      7.3.  It is hereby expressly understood that the above measures constitute
            the extent and limit of Licensor's responsibility with respect to
            the infringement of intellectual property rights related to the
            Systems and related materials.

      7.4.  During the term of this Agreement Licensor will inform Licensee of
            any and all enhancement or improvement Introduced into the Systems
            that have not resulted from a Request for Improvement made by a
            specific company. If the Licensee is interested in having the
            Enhancements or

<PAGE>

License Agreement                                                      Page 10

            Improvements introduced into the Systems, these may be provided by
            means of a special agreement.

      7.5.  Licensor shall under a separate agreement license to Licensee the
            use of other computer programs, listed as optional in Exhibit A.
            Licensor will provide such Systems at the best prevailing market
            price.

      7.6.  Licensor warrants that the physical media in which the Systems are
            stored and utilized to make the transfer to Licensee, are free of
            defects under normal operating conditions.

      7.7.  If during a period of thirty (30) days after receipt of the Systems,
            a defect is found by Licensee in the physical means in which the
            Systems are stored, Licensee may return it immediately.

      7.8.  Once it is determined by Licensor that the detect or defects do not
            result from incorrect use or from failure by Licensee to follow the
            System's usage conditions, a replacement shall be given free of
            charge.

      7.9.  Licensor warrants that the Systems will operate in conformity with
            their technical specifications so long as:

            7.9.1. They have not been modified by Licensee or by third parties
                  without the authorization of the Licensor.

            7.9.2. All of the alterations of the information in the Data Bank
                  made by Licensee have been made through the functions of the
                  Systems.

            7.9.3. The Systems are being utilized upon Licensor recommended
                  computational platform that it is being operated within the
                  environmental conditions specified by its manufacturer.

      7.10. Licensor shall not be liable to Licensee, or to any third party
            claiming through Licensor, for failure of performance of any
            obligation under this Agreement except as specifically set forth
            herein. Additionally, Licensor shall not be liable hereunder for
            indirect, special or incidental or consequential damages from its
            failure of performance, including, by way of example, from the
            interruption or loss of data arising from this License, from the use
            or from the performance or loss of information arising from the use
            or the impossibility of using the Systems.

      7.11. Likewise, Licensor shall have no liability with regards to the
            market profitability of (the licensed Systems or to their
            appropriateness for a particular business of Licensee.

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License Agreement                                                       Page 11

      7.12. The Licensor shall not be liable for any delay occurred in the
            fulfillment of the deadlines previewed in this Contract, in which
            the Licensor is not directly engaged.

8. Protection.

      8.1.  The names and logos used as identifiers in the Systems, the
            Executable Program in itself, the updates, associated documentation
            and other support materials which are part of the purpose of this
            Agreement, are protected by applicable intellectual property law. No
            property, right Involving the Systems, its updates and the
            associated documentation or any part thereof is transferred to
            Licensee by the present Agreement.

      8.2.  Notices of reservation of rights existing on the Systems may not be
            removed or altered.

                                     PART II

                               GENERAL PROVISIONS

9. Termination

      9.1.  The affected party may terminate this agreement immediately without
            need of previous judicial or arbitration resolution, In the event
            that the other party (a) has materially breached any of its
            obligations under the Agreement and after notification thereof does
            not remedy the breach within sixty (60) days or (b) has been
            adjudged a bankrupt, has become insolvent by any test, has filed any
            petition in any court of bankruptcy or equivalent court for
            receivership, reorganization, bankruptcy, arrangement or relief from
            debts or creditors, or for any other relief whatsoever, has had any
            such petition filed against it, or has made any assignment for the
            benefit of creditors or has any substantial part of its assets
            subjected to any involuntary lien which is not removed within thirty
            (30) days after notice thereof.

      9.2.  The provisions of Clause 10.1 above notwithstanding, Licensor may
            cancel the present Agreement by extra-judicial notification sent to
            Licensee effective immediately in the event of:

            9.2.1. The utilization of the Systems by third parties without its
                  previous authorization;

<PAGE>
License Agreement                                                       Page 12

            9.2.4. The utilization of the Systems by Licensee in non-compliance
                  with the provisions of this Agreement.

      9.3.  In the event of extinction or termination of this Agreement Licensee
            and its sub-Licensees will be prohibited from using the Systems and
            Licensee shall return to Licensor all of the Systems, original or
            security copies, together with all the associated documentation
            related to the Systems supplied by Licensor, and, Licensee shall
            remain obligated to pay those amounts due or about to become due.

10. Waiver

      10.1. No delay or failure by either Party in exercising any right under
            this Agreement, nor any partial exercise thereof, shall be deemed to
            constitute a waiver of said right or of any other right.

11. Effect of Breach

      11.1. In addition to that provided in Clause 10.2 above upon the
            occurrence of a breach of the Agreement or of any other event which
            gives rise to the Licensor's right to terminate the Agreement, the
            Licensee shall remain liable for any and all monetary obligations
            arising under this Agreement and Licensor shall have the right to
            accelerate and declare all obligations of the Licensee to be due
            and payable by Licensee as a liquidated sum and to proceed against
            the Licensee and/or repossess so much of the Systems or License
            materials as remain in its possession.

12. Force Majeure.

      12.1. Licensor and Singer shall not be responsible for delays or failures
            in its performance resulting from Acts of God, earthquakes,
            shortages of supplies, transportation difficulties, labor disputes,
            riots, war, fire, epidemics, and any acts, omissions or events
            beyond its control. Performance times under this Agreement shall be
            extended for a period of time equivalent to the time lost because of
            a delay which is excusable under this provision.

<PAGE>

License Agreement                                                      Page 14

Licensee:

Globaltron Communications Corporation
45 Broadway, Floor 12
New York, NY
USA

Licensor:
CPqD Technologies arid Systems, Inc.
111, Market Street
San Jose 95113
California - CA

Singer:
Singer Products Inc.
1840 West 49th Street, Suite 501
Hialeah, FL 33012

l7. Taxes

All prices and charges stated herein are exclusive of any taxes, fees arid
duties or other amounts, however designated, and including without limitation
value added and withholding taxes which are levied or based upon prices and
charges or upon this Agreement outside of Brazil. Licensee shall report arid
pay, outside of Brazil, all federal, state, and local taxes, (excluding only
those taxes based on the net income derived by Licensee, Licensor and Singer,
fees and duties end amounts designated, levied, or based (1) upon the Product
and License Purchase Prices, or any other amounts payable under this Agreement;
(2) on account of this Agreement; or (3) with respect to the Products, the
Equipment, or the Systems or the acquisition, ownership, or use thereof by
Licensee. Licensee shall Indemnify and hold harmless, Licensor and Singer from
all claims and liability resulting from Licensee failure to report or pay such
amounts.

18. Entire Agreement, Modifications.

This Agreement including all exhibits hereto (A through H), which are hereby
Incorporated herein by this reference, constitutes the entire agreement between
the parties hereto with respect to the subject matter hereof and supersedes any
and all prior contemporaneous representations, proposals, agreements,
negotiations, advertisements, statements, or understandings, whether oral or
written. No amendment to this Agreement shall be binding on the Parties unless
such amendment is in writing and executed by authorized representatives of the
Parties to this Agreement.

IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed
by their respective authorized Representatives.

<PAGE>

License Agreement                                                      Page 15

Globaltron Communications Corporation

By
   ----------------------------------

Title  CEO
     --------------------------------

CPqD Technologies and Systems, Inc.

By
   ----------------------------------

Title  VP Finance
     --------------------------------

Singer Products Inc.

By
   ----------------------------------

Title  President
     --------------------------------

<PAGE>

License Agreement                                                      Page 16

                                LIST OF EXHIBITS

Exhibit A      Description, Quantity and Prices for Software and Licensor
               Services

Exhibit B      Licensor Proposal to Licensor including Systems Specifications
               (Operations Systems Solution Proposal)

Exhibit C      Definitions Adopted For the Purpose of Contract Exhibit D
               Training

Exhibit E      Project Schedule and Delivery Dates for Systems and Associated
               Services

Exhibit F      Finance Term Sheet

<PAGE>

                                    EXHIBIT A

Optional Software Products provided by CPqD Technologies and Systems

CENTURION
         Software product for alarms monitorization in the network. This system
does not supervise the network performance and surveillance but manages and
informs the network supervisor of faults which have occured.
                 Software License Price for Globaltron: US$ 350,000.00

SSR
         Software product for management of. the Public Pay Phones in Brazil.
This system complies to the standards of. ANATEL, the national (Brazil)
telecommunications regulatory agency.
                 Software License Price for Globaltron: US$ 100,000.00

SRO2
         System for planning and management of. Optical Networks. With this
product, Network planners are able to simulate the performance of the different
topologies and configurations, in conjunction with the new emerging access
technologies.
                 Software License Price for Globaltron: US$ 450,000.00

QUALISET
         Telecommunications services performance measurement system. This
software product was developed for quality assessment of telco services
according to ANATEL's speclfica1ions. This product can be customized to be
applied in other countries, due to the parametrization options which are
available.
                 Software License Price for Globaltron: US$ 200,000.00

INFOACCESS

         System for Cable Modem access to Internet and other general purpose
corporate networks. This system aUtomatically manages and supervises voice, data
and television traffic avoiding conflicts and other forms of. interference, due
to very high technology security characteristics.
                 Software License Price for Globaltron: US$ 350,000.00

TERUS
         System for management of. Switching Equipment balancing. This product
can evaluate the performance of. local switches enabling operators to predict
faults In the network due to increasing traffic.
                 Software License Price for Globaltron: US$ 350,000.00

<PAGE>
                                SOFTWARE SYSTEMS

CPqD
Telecom & It Solutions

CENTURION                     PROMUS              [LOGO]              [LOGO]
                         The Billing Solution      SSR                 SRO2

SAGRE
Outside Plant
Management                    [LOGO]                   Qualiset
                              CPqD                The Performance
                            Software              Improvement Solution

flexflow
Customer care and
Service Provisioning

     SGE                         TERUS                    [LOGO]
Work Force Management        Switching Access             InfoAccess
and Trouble Ticketing        Point Management

<PAGE>

2.     Conditions of Use

The systems are being considered by Globaltron and its telecommunications
partner companies in Colombia. In order for the systems to be used in other
countries, it will be necessary to include localization services to make them
adequate for the realities of those countries, which are not included in this
business proposal. Furthermore, any and every investment in a computational
platform that might be necessary for this purpose will be the sole
responsibility of Globaltron.

These systems are limited to 40,000 subscribers, and the use of the SAGRE
system is limited to 10 engineering users.

There are different forms of operations systems use and access control for local
telephone service providers and for long distance carriers. In the case or local
telephone service providers, the User Licenses are controlled based on the
subscriber plant, while for the carriers, control is done through the processed
traffic by the billing module using the average monthly CDRs (Call Detail
Records), based on the total annual traffic.

Considering PROMUS' use of the Account Settlement module (CAll), by the carrier
belonging to Globaltron, the total traffic to be considered processed, including
those generated by local telephone service providers that use the system is
limited to 6,000,000 CDRs per month, considering the annual average.

2.1 Conditions for Support and Maintenance

For adequate system maintenance and support to Globaltron, CPqD requires remote
access to the systems via Internet. This is necessary when working with failure
situations, evaluation for corrections and support, or for the updating of
systems.

 2.2   Computational Prerequisites

The systems installation architecture must be a client/server architecture as
described in chapter 9. The link between the server and client stations must
have a minimum speed of 19200 bps for each client station utilizing PROMUS,
SGE, and FLEXFLOW systems, and a minimum speed of 64 kbits/s for the client
stations which utilize the SAGRE system,

<PAGE>

3.     Commercial Conditions

The prices presented do not include taxes or fees which are normally applied.

CPqD, together with Tropico is seeking a line of credit for the export of this
project through Brazilian financial entities. The financing conditions will be
presented to Globaltron for its analysis and approval.

3.1    List Prices for Program User License:

The CPqD list prices for the systems are as follows:

--------------------------------------------------------------------------------
                                             License for the Use of Promus
     Number of Subscribers                   FLEXFLOW, SAGRE AND SGE SYSTEMS
                                                          US$
--------------------------------------------------------------------------------

30,001.00      to        30,000                        3,640,000.00
40,001.00      to        40,000                        4,550,000.00
60,001.00      to        60,000                        5,005,000.00
80,001.00      to        80,000                        5,510,000.00
100,001.00     to        100,000                       6,065,000.00
200,001.00     to        200,000                       7,280,000.00
400,001.00     to        400,000                       8,740,000.00
600,001.00     to        800,000                      12,590,000.00
800,001.00     to        1,000,000                    15,110,000.00
--------------------------------------------------------------------------------

    These prices do not include installation services and parameterization
applicable to the systems.

    3.2   Pricing for Globaltron

    These prices do not include installation services and parameterization
applicable to the systems, The hardware platform and the following basic
software, Oracle, Vision, and DOC 1 are not included but are necessary for the
adequate functioninq of the systems.

--------------------------------------------------------------------------------
                         Maximum Processing Traffic of      User License for the
Number of Subscribers           CDRs/month                  Operations System in
                                                                   US$
--------------------------------------------------------------------------------

Up to 40,000                  Up to 6,000,000                  3,500,000

--------------------------------------------------------------------------------
<PAGE>

For an Increase in use of the system, we will apply a value of US$ 4 per
telephone subscriber and US$ 2 per subscriber of aggregated value service
(Internet clients and unified message services), charged in groups of 100
subscribers when the number of subscribers of the service providers is greater
than 40,000 subscribers, In such cases an increase in processing traffic of 150
CDRs per month will be applied to the traffic limit of 6,000.000 CDRs per month
for each telephone subscriber that exceeds the limit oF 40,000 subscribers.

The number of subscribers must he reported on a monthly basis to CPqD, who
reserves the right to perform periodical auditing in order to verify the amount
of existing subscribers in the systems' database, When the number of subscribers
is greater than the number contracted at the time, the amount related to the
increase will be charged retroactively from the date of the increase.

In order to meet the needs of a start-up company, CPqD is offering, without any
additional costs, the account settlement system, limited to a processing traffic
limit of 6,000,000 CDRs per month, considering the monthly average over a year's
time, including all the carrier and local operator's traffic. For the increase
in the systems' use, there'll be an additional charge of US$ 2 for each: 1000
CDRs processed during the month, exceeding the limit of contracted CURs, The
average, number of CDRs processed during the month must be reported every three
months to CPqD, who reserves the right to perform periodical auditing to verify
this information.

All increases in traffic (CDRs) and in the subscriber base will imply a
correction in the license value.

<PAGE>

3.3   License Renewal

After the fifth year, in June 2005, the systems' user license will be renewed at
the annual value of 15 percent of the value of the license practiced by CPqD on
the renewal date, considering the subscribers network and the traffic processed
by Globaltron.

The value of the license at the renewal date cannot exceed tire value of the
license contracted at the time taking into account the variation of CPI. .

3.4    Implementation and Parameterization of Services

The implementation and parameterization of services of the PROMUS, FLEXFLOW,
SGE and SAGRE systems, as described in chapter 10 are:

--------------------------------------------------------------------------------
IMPLEMENTATION AND            NUMBER OF                     PRICE US$
PARAMETERIZATION OF        HOURS FORESEEN
     SERVICES
--------------------------------------------------------------------------------

PROMUS                        3,280                         615,000.00

FLEXFLOW                      1,500                         281,250.00

SGE                             250                          46,875.00

SAGRE                           450                          84,375.00

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

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