EXHIBIT 10.26

LENDER:                                              LOAN AND SECURITY AGREEMENT

         NEWBRIDGE FINANCIAL SERVICES, A UNIT OF GE CAPITAL CORPORATION

                              BORROWER INFORMATION

BORROWER: TELSCAPE INTERNATIONAL, INC.,
PERSON TO CONTRACT/TITLE: TODD BINET, CHIEF FINANCIAL OFFICER

CO-BORROWERS: EACH SUBSIDIARY OF TELSCAPE LISTED ON THE SCHEDULE
              OF BORROWING SUBSIDIARIES ATTACHED HERETO AND EACH
              SUBSIDIARY WHICH SUBSEQUENTLY BECOMES A PARTY HERETO
              PURSUANT TO SECTION 1(B) OF THIS AGREEMENT

Address: 2700 POST OAK BLVD, STE 1000

                                                                 [X] Corporation
                                                                 [ ] Partnership
City: HOUSTON    County:         State: TX   Zip Code: 77056     [ ] Cooperative

Telephone Number: (713) 968-0968                Facsimile Number: (713) 968-0930

                         AGREEMENT TERMS AND CONDITIONS
--------------------------------------------------------------------------------
<TABLE>
<S>                   <C>                         <C>                <C>
Agreement Date        Interest Rate               Termination Date   Purchase Agreement No.
DECEMBER 7, 1998      FOR EACH  ADVANCE,  THE     MAY 30, 1999                N/A
                      3 YR. FED. RES.  TREAS.
                      CONSTANT  MATURITY RATE
                      AS OF THE  DATE OF SUCH
                      ADVANCE   +  550  BASIS
                      POINTS                 

Commitment Amount     No. of Payments            Supplier            Purchase Agreement Date
(US)$6,000,000              36                   NEWBRIDGE NETWORKS           N/A
</TABLE>
      1. COMMITMENT TO LEND: (a) Subject to the terms and conditions provided in
this Loan and Security Agreement ("Agreement") and so long as no Event of
Default (as defined in Section 14 hereof) or event or condition which with
notice or passage of time or both would constitute an Event of Default has
occurred and is continuing hereunder, Lender agrees to lend to Telscape
International, Inc., a Texas corporation ("Telscape"), and to Domestic and/or
Foreign Subsidiaries of Telscape which are signatories to the Schedule of
Borrowing Subsidiaries attached hereto and forming a part hereof, and to such
additional Domestic and/or Foreign Subsidiaries of Telscape which may become a
party hereto pursuant to Section 1(b) hereof (Domestic and/or Foreign
Subsidiaries of Telscape which are signatories to the Schedule of Borrowing
Subsidiaries attached hereto and such additional Domestic and/or Foreign
Subsidiaries of Telscape which may hereafter become a party hereto pursuant to
Section 1(b) of this Agreement are individually referred to as a "CO-BORROWER"
and collectively as the "CO-BORROWERS"), until the Termination Date set forth
above, an amount in the aggregate not to exceed the Commitment Amount set forth
above, which sum shall be used by such Co-Borrower solely to finance the
purchase by it of Newbridge Networks telecommunications equipment and associated
software sublicenses pursuant to one or more Purchase Agreements (individually
and collectively, the "Purchase Agreement") made by and between Newbridge
Networks (the "Supplier") and such Co-Borrower for installation in the United
States, Mexico and other Latin American jurisdictions. "SUBSIDIARY" means, as to
any person, a corporation, partnership, limited liability company or other
entity of which shares of stock or other ownership interests having ordinary
voting power (other than stock or other ownership interests having such power
only by reason of the happening of a contingency) to elect a majority of the
board of directors or other managers of such corporation, partnership, limited
liability company, or other entity, are at the time owned, or the management of
which is otherwise controlled, directly or indirectly, through one or more
intermediaries, or both, by such person. "DOMESTIC SUBSIDIARY" means a
Subsidiary incorporated under the laws of the United States, one of the states
of the United States, the District of Columbia, or any territory, possession or
protectorate of the United States. "FOREIGN SUBSIDIARY" means a Subsidiary
incorporated under the laws of any jurisdiction other than the laws of the
United States, one of the states of the United States, the District of Columbia,
or any territory, possession or protectorate of the United States. "DOMESTIC
CO-BORROWER" means a Co-Borrower which is a Domestic Subsidiary of Telscape, and
"FOREIGN CO-BORROWER" means a Co-Borrower which is a Foreign Subsidiary of
Telscape. Unless otherwise qualified, all references to a "Subsidiary" or to
"Subsidiaries" in this Agreement shall refer to a Subsidiary or Subsidiaries of
Telscape.

      (b) Lender, Telscape and each Co-Borrower acknowledge and agree that
subject to compliance with the terms and conditions of this Agreement, Telscape
may, and subject to the terms hereof is required to, (without the consent of any
Co-Borrower) cause one or more additional Domestic and/or Foreign Subsidiaries
of Telscape to become a Co-Borrower hereunder by executing a form of the annex
to 




            THE TERMS AND CONDITIONS ON PAGES 2 THROUGH 11 ARE A PART
                      OF THIS LOAN AND SECURITY AGREEMENT.
<TABLE>
==============================================   =========================================== 
<S>                                              <C> 
LENDER: NEWBRIDGE FINANCIAL SERVICES, a unit     TELSCAPE: TELSCAPE INTERNATIONAL, INC.
        of GE CAPITAL CORPORATION                          
                                                                                             
BY:                                              BY:                                         
                                                                                             
PRINT NAME:                                      PRINT NAME:                                 
                                                                                             
TITLE:                   DATE:                   TITLE:                   DATE:              
==============================================   =========================================== 
</TABLE>
<PAGE>
the Schedule of Borrowing Subsidiaries set forth as EXHIBIT A, as the case
may be, and such additional Domestic Subsidiaries may thereafter borrow amounts
hereunder to finance the acquisition of equipment which is, or is to be placed,
in the United States, Mexico or other Latin American jurisdictions and such
additional Foreign Subsidiaries of Telscape may thereafter borrow amounts
hereunder to finance the acquisition of equipment which is, or is to be placed,
in Mexico or other Latin American jurisdictions. The obligations of each
Domestic Co-Borrower hereunder and under each Note evidencing amounts from time
to time advanced hereunder to a Co-Borrower shall be joint and several
obligations of Telscape and all Domestic Co-Borrowers. The obligations of each
Foreign Co-Borrower hereunder and under each Note evidencing amounts from time
to time advanced hereunder to a Foreign Co-Borrower shall be joint and several
obligations of Telscape and all Co-Borrowers. Telscape and the Co-Borrowers
agree that, prior to any additional Subsidiary of Telscape becoming a
Co-Borrower hereunder, such Subsidiary and Telscape shall execute and deliver to
Lender a form of the annex to the Schedule of Borrowing Subsidiaries, as the
case may be, and if required by Lender cause the delivery of an opinion of legal
counsel to Telscape and such additional Subsidiary dated the date of the
execution of the form of the annex to the Schedule of Borrowing Subsidiaries in
form and substance satisfactory to Lender and such other documents as the Lender
may request, including but not limited to a certificate of a responsible officer
of such additional Subsidiary as to the authority of such additional Subsidiary
to execute, deliver and perform this Agreement and all Notes and as to the
incumbency and signature of the officer or officers signing Borrowing
Certificates and Notes.

      2. THE NOTES AND PAYMENT TERMS: Each advance of funds requested by a
Borrowing Certificate (an "ADVANCE") executed by a Domestic Co-Borrower shall be
evidenced by a Note in the form of EXHIBIT B, in each case satisfactory to the
Lender, executed by Telscape and all Domestic Co-Borrowers representing the
joint and several obligation of Telscape and all Domestic Co-Borrowers to pay
the aggregate unpaid principal amount of the Note (plus any accrued interest
thereon) until paid in full as provided below. Each Advance requested by a
Borrowing Certificate (an "ADVANCE") executed by a Foreign Co-Borrower shall be
evidenced by a Note in the form of EXHIBIT C, in each case satisfactory to the
Lender, executed by Telscape and each Co-Borrower representing the joint and
several obligation of Telscape and all Co-Borrowers to pay the aggregate unpaid
principal amount of the Note, plus any accrued interest thereon, until paid in
full as provided below. A Domestic Co-Borrower shall be jointly and severally
liable for each Note executed by Telscape and other Co-Borrowers under this
Agreement even if the Note is issued prior to the addition of such particular
Domestic Co-Borrower as a Co-Borrower hereunder and such Domestic Co-Borrower is
not a maker of the Note. A Foreign Co-Borrower shall be jointly and severally
liable for each Note executed by Telscape and other Foreign Co-Borrowers under
this Agreement even if the Note is issued prior to the addition of such
particular Foreign Co-Borrower as a Co-Borrower hereunder and such Foreign
Co-Borrower is not a maker of a Note. Each Co-Borrower acknowledges that an
Event of Default under any Note issued under this Agreement shall constitute an
Event of Default under all Notes issued hereunder. Each Note shall be dated the
borrowing date for that Note and be stated to mature on the maturity date set
forth in the Note (the "Maturity Date"). Except as otherwise provided herein,
each Note shall bear interest from the borrowing date on the outstanding unpaid
Principal Amount thereof at a fixed rate per annum (compounded monthly and
computed on the basis of a year of 360 days for the actual days elapsed) equal
to the applicable Interest Rate set forth above. In computing interest on any
Note, the borrowing date shall be included and the date of payment excluded.
Each Note shall be payable in the number of payments of principal and interest
set forth in that Note, commencing on the First Payment Date set forth in that
Note and continuing on each immediately successive Payment Date thereafter in an
amount equal to the Payment Amount set forth in that Note. A Payment Date shall
be the first day of each successive month following the First Payment Date and
continuing thereafter so long as any amounts are owed to the Lender under such
Note. If a Payment Date is not a business day, the Payment Date shall be on the
first business day following the nonbusiness day, and interest thereon shall be
payable at the rate in effect during such extension. Each payment shall be
credited first to accrued and unpaid interest and the balance to the Principal
Amount (provided that in any event the entire Principal Amount of the Note then
outstanding together with any accrued and unpaid interest shall be paid on the
final Payment Date, which shall be the Maturity Date). The Lender is authorized
to endorse the date and amount of each Advance and each payment of the Principal
Amount and interest with respect to the Note on the schedule annexed to and
constituting a part of the Note, which endorsement shall constitute prima facie
evidence of the accuracy of the information endorsed.

      All payments shall be made in lawful money of the United States of America
in immediately available funds and without set off or counterclaim to the Lender
or any subsequent assignee of a Note.

      Notwithstanding the foregoing, if Telscape or any Co-Borrower shall fail
to pay within ten (10) days after when due any part of the Principal Amount,
interest or any other amount payable hereunder or under the Note, such amount
shall bear interest at a rate per annum that is three percent (3%) higher than
the Interest Rate from the due date until such overdue Principal Amount,
interest, or other amounts are paid in full (before and after judgment) whether
or not any notice of default in the payment thereof has been delivered.

      Notwithstanding any provision of this Agreement, it is the intent of the
Lender, Telscape and each Co-Borrower that the Lender, or any subsequent holder
of a Note, shall never be entitled to receive, collect, reserve or apply, as
interest, any amount in excess of the maximum lawful rate of interest permitted
to be charged by applicable law, as amended or enacted from time to time. In the
event the Lender, or any subsequent holder of a Note, ever receives, collects,
reserves or applies as interest, interest in excess of the then maximum lawful
rate of interest, such amount which would be excessive interest shall be deemed
a partial prepayment of the Principal Amount and treated hereunder as such, or,
if the principal Indebtedness, defined in Section 6 hereof, evidenced thereby,
and all other amounts due are paid in full, any remaining excess funds shall
immediately be paid to the appropriate Co-Borrower. In determining whether or
not the interest paid or payable, under any specific contingency, exceeds the
maximum lawful rate of interest, each Co-Borrower and the Lender shall, to the
maximum extent permitted under applicable law, (a) exclude voluntary prepayments
and the effects thereof as it may relate to any fees charged by the Lender, and
(b) amortize, prorate, allocate and spread, in equal parts, the total amount of
interest throughout the entire term of the Indebtedness; provided that if the
Indebtedness is paid in full prior to the end of the full contemplated term
hereof, and if the interest received over the actual period of existence hereof
exceeds the maximum lawful rate of interest, the Lender or any subsequent holder
of a Note shall refund to the appropriate Co-Borrower the amount of such excess,
and in such event shall not be subject to any penalties provided by any laws 

                                      -2-
<PAGE>
for contracting for, charging, reserving, collecting or receiving interest in
excess of the maximum lawful rate of interest.

      3. PROCEDURES FOR BORROWING: Telscape and a Co-Borrower shall give Lender
at least five (5) business days notice of the intention to borrow amounts
hereunder to finance the acquisition by such Co-Borrower of equipment which is,
or is to be placed in, jurisdictions within the United States and at least
thirty (30) business days notice of the intention to borrow amounts hereunder to
finance equipment which is, or is to be placed, in Mexico or other Latin
American jurisdictions, by issuing and delivery to Lender a Borrowing
Certificate executed by Telscape and the Co-Borrower which is to acquire the
equipment to be financed with the proceeds of the Advance, in a form and
substance satisfactory to Lender, specifying the business day on which the
borrowing is to be made and the amount of the borrowing and attaching thereto
the applicable purchase order issued by such Co-Borrower and related invoice
from the Supplier which is to be paid by Lender with the proceeds of the loan.
On the borrowing date specified in the Borrowing Certificate, providing that all
conditions precedent have been satisfied, Lender shall transmit the borrowed
funds to an account maintained by and in the name of Supplier. The aggregate
principal amount of each borrowing shall be not less than $25,000. Lender shall
not be required to make Advances more than twice per calendar month.

      4. PLACE OF PAYMENT: The Principal Amount, interest and fees, if any,
shall be payable at 501 Corporate Centre Drive, Suite 600, Franklin, Tennessee
37067, or such other place as may be designated, from time to time in writing,
by Lender or any subsequent holder.

      5. PREPAYMENT: (a) Beginning thirty (30) business days after the date of
each Advance evidenced by a Note, a Co-Borrower may, at its option but subject
to the satisfaction of the requirements of the next sentence, at any time and
from time to time, prepay such Advance, in whole or in part, upon at least (30)
business days prior written notice to Lender specifying the date and amount of
prepayment in a minimum amount of $50,000 (unless the outstanding balance of the
Note is less than $50,000 then the payment shall be the balance). Any such
prepayment occurring during the first, second and third years following the date
of such Advance shall be subject to a prepayment premium equal to a percentage
of the amount being prepaid as follows: three percent (3%) if the prepayment is
made during the first year following the date of such Advance; two percent (2%)
if the prepayment is made during the second year following the date of such
Advance; and one percent (1%) if the prepayment is made during the third year
following the date of such Advance.

      (b) If (i) a Co-Borrower is unable to satisfy the conditions of Section
11(l)(ii) or (iii) due to the intended movement of Collateral to or within a
jurisdiction in Latin America other than Mexico and (ii) no Event of Default, or
condition or event which with the passage of time and/or giving of notice would
constitute an Event of Default, under this Agreement has occurred and is
continuing, then such Co-Borrower may, upon at least (30) business days prior
written notice to Lender specifying the date and amount of prepayment, prepay
without prepayment premium principal amounts owed hereunder in an amount equal
to the principal amount advanced hereunder by Lender to finance the acquisition
of such Collateral, and obtain a release, at the sole expense of such
Co-Borrower, of any lien, security, trust or other ownership interest of the
Lender on such Collateral, provided that (x) the amount of prepayments under
this Section 5(b) by all Co-Borrowers may not to exceed $150,000 in the
aggregate within any twelve month period, and (y) as a condition to the exercise
by a Co-Borrower of this right of prepayment, the Lender may require such
Co-Borrower, at the sole expense of such Co-Borrower, to execute and deliver (or
cause the execution and delivery of) such certificates and modifications or
amendments to existing agreements or the execution of replacement agreements as
Lender may reasonably request to assure the compliance by such Co-Borrower with
the conditions to this right of prepayment and to assure that the release of any
lien or security interest does not adversely affect Lender's rights on all
remaining Collateral. The payment made under this Section shall be in lieu of,
and not in addition to, the payment made under paragraph (a).

      6. SECURITY INTEREST: OBLIGATIONS SECURED: Each Domestic Co-Borrower (as
debtor) hereby assigns as collateral and grants to Lender (as secured party), as
security for all of the Indebtedness, and each Foreign Co-Borrower (as debtor)
hereby assigns as collateral and grants to Lender (as secured party), as
security for the Foreign Co-Borrower Indebtedness, a continuing security
interest in and to, all of such Co-Borrower's right, title and interest in and
to the property and the property rights described in Section 7 hereof, whether
now owned or hereafter acquired or arising, wherever located, together with all
substitutions therefor and all accessions, replacements and renewals thereof,
and in all proceeds and products thereof (collectively, the "COLLATERAL") .
"INDEBTEDNESS" means all Domestic Co-Borrower Indebtedness and Foreign
Co-Borrower Indebtedness. "FOREIGN CO-BORROWER INDEBTEDNESS" means all
indebtedness, liabilities and obligations to Lender of all Foreign Co-Borrowers,
of any class or nature, whether arising under or in connection with this
Agreement, and/or the other Loan Documents or otherwise, whether now existing or
hereafter incurred, direct or indirect, absolute or contingent, secured or
unsecured, matured or unmatured, joint or several, whether for principal,
interest, fees, expenses, lease obligations, indemnities or otherwise,
including, without limitation, future advances of any sort, including all future
advances made by Lender for taxes, levies, insurance and/or repairs to or
maintenance of the Collateral, the unpaid principal amount of, and accrued
interest owed by the Foreign Co-Borrowers on the Notes, and any expenses of
collection or protection of Lender's rights, including reasonable attorneys'
fees. "DOMESTIC CO-BORROWER INDEBTEDNESS" means all indebtedness, liabilities
and obligations to Lender of Telscape or any Domestic Co-Borrower, of any class
or nature, whether arising under or in connection with this Agreement and/or all
other documents, instruments, agreements and certificates evidencing or securing
any advance hereunder or any obligation for the payment or performance thereof
and/or executed and delivered in connection with any of the foregoing (the "LOAN
DOCUMENTS") or otherwise, whether now existing or hereafter incurred, direct or
indirect, absolute or contingent, secured or unsecured, matured or unmatured,
joint or several, whether for principal, interest, fees, expenses, lease
obligations, indemnities or otherwise, including, without limitation, future
advances of any sort, all future advances made by Lender for taxes, levies,
insurance and/or repairs to or maintenance of the Collateral, the unpaid
principal amount of, and accrued interest owed by the Domestic Co-Borrowers on
the Notes, and any expenses of collection or protection of Lender's rights,
including reasonable attorneys' fees.

      7. DESCRIPTION OF COLLATERAL: The Collateral includes, and each
Co-Borrower hereby grants Lender a security interest in, all such Co-Borrower's
presently existing or hereafter acquired right, title and interest in, and to
(a) the equipment, fixtures, and other property identified in a Borrowing
Certificate pursuant to which Lender advances funds hereunder (such collateral
description in Borrowing Certificates are collectively referred to as the
"Collateral Schedule") or otherwise acquired or financed directly or indirectly
with loan proceeds from Lender (including, without limitation, hardware and
software, components, parts, wiring, cabling and associated electronics) and any
and all replacements of or substitutions for any of the foregoing, together with
all additions, attachments, components, parts, accessions, improvements, and
upgrades forming an integral part thereof, and all accessories installed thereon
or affixed thereto; and (b) to the extent not otherwise included, all proceeds
of the foregoing, including without limitation, (i) any and all proceeds of any
insurance, indemnity, warranty or guaranty payable to Co-Borrower from time to
time with respect to any of the Collateral; (ii) any and all payments (in any
form whatsoever) made or due and payable to any Co-Borrower from time to time in
connection with any requisition, confiscation, condemnation, seizure or
forfeiture of all or any part of the Collateral by any governmental body,
authority, bureau or agency (or any person acting under color of governmental
authority); (iii) any and all other amounts from time to time paid or payable
under or in connection with any of the Collateral; and (iv) any and all cash
proceeds and non-cash proceeds in the form of equipment, inventory, accounts,
general intangibles, chattel paper or other proceeds with respect to any of the
Collateral (collectively, "Proceeds"). The Collateral Schedule is incorporated
in and made a part of this Agreement. Collateral may be released from the
Collateral Schedule and the 

                                      -3-
<PAGE>
security interests described herein only pursuant to Section 10 hereof.

      8. REPRESENTATIONS AND WARRANTIES: In order to induce the Lender to enter
into this Agreement and to make the loans contemplated herein, each of Telscape
and each Co-Borrower represents and warrants that on the date of each Note's
execution and until payment in full of the indebtedness:

      (a) Each of Telscape and each Co-Borrower (i) is duly organized, validly
existing and in good standing under the laws of the jurisdiction in which it was
formed; (ii) has the power and legal authority to own or lease and operate its
property and to carry on its business as now being conducted; (iii) is properly
licensed, in good standing and duly qualified to do business in every
jurisdiction where necessary; (iv) has the power and authority and the legal
right to make, deliver and perform this Agreement and each Note to which it is a
party and to borrow hereunder and has received all necessary authorization from
its directors or partners, as applicable, to execute, deliver and perform this
Agreement, the Notes to which it is a party and any related documents to be
delivered pursuant to this Agreement, and (v) the Co-Borrowers are, and will
remain, Subsidiaries of Telscape for so long as such Subsidiary remains
obligated to Lender hereunder.

      (b) The person executing this Agreement and each Note on behalf of each
Co-Borrower has been given the authority to bind Telscape and each Co-Borrower,
and this Agreement and all Notes executed by or on behalf of a Co-Borrower
constitute legally binding and enforceable obligations of such Co-Borrower and,
with respect to the Agreement, Telscape.

      (c) The execution, delivery and performance of this Agreement and any Note
will not violate Telscape's or any Co-Borrower's charter, bylaws, partnership
agreement or other organizational papers, or any law, agreement or undertaking
to which Telscape or any Co-Borrower is a party, or by which Telscape or any
Co-Borrower is bound or affected.

      (d) All required consents relative to the execution, delivery, and
performance of this Agreement and the Notes have been obtained, including any
required of the Federal Communications Commission, the Commerce Commission for
any state or other jurisdiction in which Telscape or any Co-Borrower is
operating ("PC") or any other governmental authority.

      (e) All information, reports and other papers and data with respect to
Telscape and each Co-Borrower (other than projections) furnished to the Lender
by Telscape or a Co-Borrower at any time prior to the date hereof, were, to the
best knowledge of Telscape and such Co-Borrower at the time the same were
furnished, true and correct in all material respects, or have been subsequently
supplemented by other information, reports or other papers or data, to the
extent necessary to give the Lender a true and accurate knowledge of the subject
matter thereof in all material respects; and all projections with respect to
Telscape and any Co-Borrower furnished by Telscape or a Co-Borrower, as
supplemented, were prepared or presented in good faith by Telscape or a
Co-Borrower and had a reasonable basis. No fact is known to Telscape or any
Co-Borrower which materially and adversely affects the business, operations,
assets (taken as a whole), or financial condition of Telscape or any Co-Borrower
which has not been set forth in the financial statements provided to Lender in
connection with this Agreement or in such information, reports, papers and data,
or otherwise disclosed in writing to the Lender prior to the first borrowing
date relative to the initial loan made hereunder. All financial statements have
been prepared in accordance with GAAP applied consistently throughout the period
involved.

      (f) There have been no material adverse changes in Telscape's consolidated
financial position since the date of the financial statements provided to Lender
in connection with the credit approval of Telscape relative to this Agreement.

      (g) There is no litigation, investigation or proceeding threatened or
pending against Telscape or any Co-Borrower or against any of its assets or
revenues which, if decided adversely, would have a material adverse effect upon
Telscape's consolidated financial condition or its business, operations or
assets (taken as a whole).

      (h) Each Co-Borrower is the sole owner of and has good and marketable
title to each item of Collateral (or will have at the time such Co-Borrower
acquires rights in the Collateral hereafter arising), free and clear of all
security interests, claims, liens, and encumbrances except as granted to Lender.
Lender has a fully-perfected first priority lien on, and security interest in,
all right, title and interest of each Co-Borrower in the US Collateral
enforceable against such Co-Borrower and third parties.

      (i) Neither Telscape nor any Co-Borrower is in default under any
agreement, mortgage, note, security agreement or other documents to which it is
a party or by which it, or any of its property, is bound in any respect which
could be materially adverse to the business, operations, assets or financial
condition of Telscape on a consolidated basis, or which could materially
adversely affect the ability of Telscape or any Co-Borrower to perform its
obligations under this Agreement.

      (j) Telscape and each Co-Borrower have paid all taxes due, except such
taxes as are being contested in good faith and against which Telscape has set up
reserves satisfactory to the Lender.

      (k) Neither Telscape nor any Co-Borrower is engaged nor will any engage
principally, or as one of its important activities, in the business of extending
credit for the purpose of "purchasing" or "carrying" any "margin stock" within
the respective meaning of each of the quoted terms under Regulation U of the
Board of Governors of the Federal Reserve System as now, and from time to time,
hereafter in effect. No part of the proceeds of any loan will be used for
"purchasing" or "carrying" "margin stock" as so defined or for any purpose which
violates, or which would be inconsistent with, the provisions of the regulations
of such Board of Governors.

      (l) Neither Telscape nor any Co-Borrower is an "investment company" or a
company "controlled" by an "investment company," within the meaning of the
Investment Company Act of 1940 as amended.

      (m) Neither Telscape nor any Co-Borrower is in violation of any federal or
state law, rule or regulation or determination of an arbitrator, court or other
governmental authority, in each case applicable or binding upon Telscape or such
Co-Borrower or any of its properties or to which Telscape or such Co-Borrower or
any of its properties are subject, in each case which individually or in the
aggregate would have a material adverse effect on the rights of the Co-Borrower
or Lender in the Collateral or Telscape's consolidated financial condition or
operations or assets taken as a whole.

      (n) There is no event which is, or with notice or lapse of time, or both,
would be an Event of Default as defined in Section 14 of this Agreement.

      (o) A Purchase Agreement has been duly executed and delivered by the
Co-Borrower and the Supplier with respect to the Collateral for which proceeds
of an Advance are being requested by such Co-Borrower and will be in full force
and effect on the date of such Note.

      (p) Telscape is reviewing its operations and those of its Subsidiaries
with a view to assessing whether its business (together with the businesses of
its Subsidiaries on a consolidated basis), will be vulnerable to a Year 2000
Problem or will be vulnerable to the effects of a Year 2000 Problem suffered by
any major commercial customers of Telscape or of any of its Subsidiaries, and
based upon this preliminary review has a reasonable basis to believe that no
Year 2000 Problem will cause a material adverse effect to Telscape on a
consolidated basis. For purposes of this Agreement, "Year 2000 Problem" means
any significant risk that computer hardware, software or equipment containing
embedded microchips essential to the business or operations of Telscape or any
other Co-Borrower will not, in the case of dates or time periods occurring after
December 31, 1999, function at least as effectively and reliably as in the case
of 

                                      -4-
<PAGE>
times or time periods occurring before January 1, 2000, including the making of
leap year calculations.

      (q) Each Subsidiary of Telscape (other than Telereunion, Inc. and
Interlink Communications, Inc.) is a signatory to the Schedule of Borrowing
Subsidiaries attached hereto and forming a part hereof, and a Co-Borrower
hereunder.

      9.    CONDITIONS PRECEDENT:

      (a) INITIAL LOAN. The obligation of the Lender to make the initial loan on
the first borrowing date shall be subject to the fulfillment prior to or
contemporaneously with the making of such loan of the following conditions
precedent:

            (i) The Lender shall have received an opinion of legal counsel to
Telscape and each Co-Borrower as of such date, dated the first borrowing date,
in a form and substance satisfactory to Lender.

            (ii) Lender shall have received a certificate of a responsible
officer of Telscape and each Co-Borrower as of such date, dated the first
borrowing date, as to the authority of such Co-Borrower(s) to execute, deliver
and perform this Agreement and all Notes.

            (iii) The Lender shall have received a certificate of a responsible
officer of Telscape and each Co-Borrower as of such date, dated the first
borrowing date, as to the incumbency and signature of the officer or officers
signing the Agreement, the Notes and any other certificate or other documents to
be delivered pursuant thereto, together with evidence of the incumbency of such
responsible officer.

            (iv) The Lender shall have received copies of all consolidated
financial statements of Telscape as required by Lender.

      (B) ALL LOANS. The obligation of the Lender to make any loan (including
the initial loan) to be made by it on any borrowing date is subject to the
satisfaction of the following conditions precedent:

            (i) The Lender shall have received a Note conforming to the
requirements hereof, and fully executed by the Co-Borrower which is requesting
the Advance evidenced thereby.

            (ii) The representations and warranties made by Telscape and each
Co-Borrower in this Agreement and in each Borrowing Certificate shall be correct
in all material respects on and as of such borrowing date and after giving
effect to the loan to be made on such borrowing date.

            (iii) No Event of Default or event or condition which with notice or
passage of time or both would constitute an Event of Default shall have occurred
and be continuing on such borrowing date or after giving effect to the loan to
be made on such borrowing date.

            (iv) The Lender shall have received a Borrowing Certificate, dated
such borrowing date for such loan, satisfying the requirements of Section 3.

            (v) Except where waived by Lender in the exercise of its reasonable
discretion, the Lender shall have received the waiver of liens and consent of
the real estate lessors of the Co-Borrower, and of such other persons as the
Lender shall deem desirable, to facilitate the removal by the Lender, upon the
occurrence of an Event of Default, of all items of US Collateral which are or
were personalty where first located on any real property that is subject to any
real estate leases and/or mortgages, such waivers of liens and consents to be in
form and substance satisfactory to the Lender and its counsel.

            (vi) Telscape and all existing the Co-Borrowers shall have (1)
executed and delivered to Lender all documents (including, without limitation,
financing statements) necessary to create in favor of Lender a first-priority
perfected security interest in, and lien on, Collateral located in the United
States ("US Collateral") with evidence of any necessary filing, registration or
recordation of such documents, the payment of recording, stamp or other taxes
measured by indebtedness or otherwise required as a result of filing,
registration or recordation of such documents and searches confirming the
absence of any other liens or security interests thereon, and (2) with respect
to jurisdictions in the United States for which Lender has not previously
received an opinion of counsel covering its security interests in the US
Collateral, delivered an opinion of counsel to the applicable Co-Borrower(s),
dated the date of such Advance, in form and substance satisfactory to Lender to
the effect that the lien and security interest of Lender on such US Collateral
constitutes a perfected security interest in favor of Lender.

            (vii) The Co-Borrowers shall have (1) executed and delivered to
Lender, if requested to do so by Lender, all trust documents requested by
Lender, together with such ancillary documents reasonably requested by Lender,
for Collateral located in Mexico which is enforceable against such Co-Borrower
and third parties ("Mexican Collateral"), together with evidence of (x) any
necessary filing, registration or recordation of such documents, (y) the payment
of any recording, stamp or other taxes measured by indebtedness or otherwise
required as a result of any filing, registration or recordation of such
documents and (z) to the extent available, the absence of any other liens or
security interests on such Mexican Collateral, and (2) delivered an opinion of
counsel to the applicable Co-Borrower(s), dated the date of such Advance, in
form and substance satisfactory to Lender to the effect that the documents have
been validly executed and delivered by, and are binding and enforceable upon,
the applicable Co-Borrower(s) and do not conflict with the applicable
Co-Borrower's organizational documents, material contracts or applicable law.

            (viii) All proceedings and all other documents and legal matters in
connection with the transactions contemplated by the Agreement shall be
satisfactory in form and substance to the Lender and its counsel.


      (C) ALL LOANS FINANCING COLLATERAL IN LATIN AMERICAN JURISDICTIONS OTHER
THAN MEXICO. The obligation of the Lender to make any loan (including the
initial loan) to be made by it on any borrowing date financing Collateral in, or
to be placed in, Latin American jurisdictions other than Mexico is subject to
the satisfaction of the following conditions precedent, in addition to the
conditions for all loans and the initial loan set forth herein:

            (i) For any Advance which is to finance Collateral in, or to be
placed in, a jurisdiction in Latin America other than Mexico and Advances
financing Collateral in such jurisdiction, when aggregated with the proposed
Advance, will exceed $150,000, Lender must be satisfied that a procedure or
mechanism is available under the law of such jurisdiction for creating in favor
of Lender a first-priority security interest in, lien on, or trust or comparable
security or ownership interest in, Collateral located in such jurisdiction which
is "perfected" or otherwise enforceable against such Co-Borrower and third
parties; and Co-Borrower shall have (A) (1) executed and delivered to Lender, if
requested to do so by Lender, all documents reasonably requested by Lender for
the purpose of creating in favor of Lender a first-priority security interest
in, lien on, or trust or comparable security or ownership interest in,
Collateral located in such jurisdiction which is "perfected" or otherwise
enforceable against such Co-Borrower and third parties, together with evidence
of (x) any necessary filing, registration or recordation of such documents, (y)
the payment of any recording, stamp or other taxes measured by indebtedness or
otherwise required as a result of the execution or any filing, registration or
recordation of such documents and (z) to the extent available, the absence of
any other liens on or security or other adverse ownership interests in such
Collateral, and (2) delivered an opinion of counsel to the applicable
Co-Borrower(s), dated the date of such Advance, in form and substance
satisfactory to Lender to the effect that the documents have been validly
executed and delivered by, and are binding and enforceable upon, the applicable
Co-Borrower(s) and do not conflict with the applicable Co-Borrower's
organizational documents, material contracts or 

                                      -5-
<PAGE>
applicable law, or (B) made other arrangements for securing such Advance
satisfactory to Lender in its sole discretion.

            (ii) For any Advance which is to finance Collateral in, or to be
placed in, a jurisdiction in Latin America other than Mexico and Advances
financing Collateral in Latin America other than Mexico, when aggregated with
the proposed Advance, will exceed $450,000, Lender must be satisfied that a
procedure or mechanism is available under the law of such jurisdiction for
creating in favor of Lender a first-priority security interest in, lien on, or
trust or comparable security or ownership interest in, Collateral located in
such jurisdiction which is "perfected" or otherwise enforceable against such
Co-Borrower and third parties; and Co-Borrower shall have (A) (1) executed and
delivered to Lender, if requested to do so by Lender, all documents reasonably
requested by Lender for the purpose of creating in favor of Lender a
first-priority security interest in, lien on, or trust or comparable security or
ownership interest in, Collateral located in such jurisdiction which is
"perfected" or otherwise enforceable against such Co-Borrower and third parties,
together with evidence of (x) any necessary filing, registration or recordation
of such documents, (y) the payment of any recording, stamp or other taxes
measured by indebtedness or otherwise required as a result of the execution or
any filing, registration or recordation of such documents and (z) to the extent
available, the absence of any other liens on or security or other adverse
ownership interests in such Collateral, and (2) delivered an opinion of counsel
to the applicable Co-Borrower(s), dated the date of such Advance, in form and
substance satisfactory to Lender to the effect that the documents have been
validly executed and delivered by, and are binding and enforceable upon, the
applicable Co-Borrower(s) and do not conflict with the applicable Co-Borrower's
organizational documents, material contracts or applicable law or (B) made other
arrangements for securing such Advance satisfactory to Lender in its sole
discretion.

      10. RELEASE OF COLLATERAL AND SALE OF SUBSIDIARY. (a) In the event a Note
is paid in full, no Indebtedness remains outstanding under the Note and no Event
of Default (or condition or event which with the passing of time or the giving
of notice or both would constitute an Event of Default) has occurred and is
continuing, Lender agrees to release, at the cost and expense (including
reasonable attorneys' fees) of the obligors under such Note, that portion of
Collateral acquired with the proceeds of the Note from the lien(s) and security
interest(s) of this Agreement and the other Loan Documents, upon Lender's
receipt from the obligors under such Note of a request and adequate
documentation (including an itemized invoice of the Supplier) confirming that
the Collateral to be released was acquired with the proceeds of the Note that
has been paid in full.

      (b) For so long as no Event of Default (or condition or event which with
the passing of time or the giving of notice or both would constitute an Event of
Default) has occurred and is continuing, Telscape may with the prior written
consent of Lender, such consent not to be unreasonably withheld, sell one or
more Co-Borrowers and obtain a release, at Telscape's sole cost and expense
(including reasonable attorneys' fees), from Lender of such Co-Borrower(s) from
any liability under this Agreement. Telscape and the Co-Borrowers acknowledge
that Lender may condition its consent on the repayment of all amounts advanced
hereunder (together with any applicable prepayment premium) which have financed
Collateral held by such Co-Borrower and the satisfaction of terms and conditions
concluded appropriate by Lender in the exercise of its reasonable discretion to
ensure that the sale of the Co-Borrower and the release of the Co-Borrower from
liability hereunder will not adversely affect the Lender's rights hereunder or
under the other Loan Documents or the likelihood of repayment of all amounts
advanced hereunder. As a condition to the exercise of the right to sell a
Co-Borrower and obtain the release of such Co-Borrower from any further
liability under this Agreement, (i) Telscape must give prior written notice (the
"Disposition Notice") to Lender of a pending transaction pursuant to which the
Co-Borrower would cease to be a Subsidiary of Telscape (a "Divested
Subsidiary"), which notice shall provide all material information about the
terms and conditions of the transaction and the anticipated closing date, (ii)
Telscape shall provide such other information about the proposed transaction as
Lender may reasonably request, and (iii) in the event of any change to the terms
of the proposed transaction from that disclosed to Lender, Telscape shall
provide all material information about such new or changed terms to Lender.
Lender must notify Telscape in writing whether it consents to the consummation
of the transaction as described in the notice within thirty (30) business days
of receipt of such Disposition Notice, provided if Lender has not received such
additional information requested by it within such time to permit it to be duly
considered or in the event of any change to the terms of the proposed
transaction from that disclosed to Lender, Lender shall have an additional
reasonable amount of time to consider (or in the event it has already given its
response) to reconsider whether to consent to the proposed transaction based
upon the additional and/or updated information. Any consent of Lender to such
transaction may be subject to the absence of any material adverse change between
the date of the consent and the consummation of the transaction.

      11. AFFIRMATIVE COVENANTS: Each of Telscape and each Co-Borrower (with
respect to itself and its business, property and Collateral) warrants, covenants
and agrees that from the Agreement date and until performance and payment in
full of the Indebtedness, it will:

      (a) Furnish to Lender as soon as available, but in any event within one
hundred and twenty (120) days after the end of each fiscal year of Telscape, a
copy of the consolidated balance sheet of Telscape as of the end of such year
and the related statements of operations and cash flows for such year, setting
forth in each case in comparative form, the figures for the previous year
audited by independent certified public accountants. The financial statements
shall be complete and correct in all material respects, and be prepared in
reasonable detail and in accordance with GAAP applied consistently throughout
the periods reflected therein (except as approved by such accountants or a
responsible officer, as the case may be, and disclosed therein).

      (b) Furnish to Lender, concurrently with the delivery of the financial
statements referred to in subsection (a) hereof, a certificate of a responsible
officer of Telscape and each Co-Borrower stating that, to the best of such
officer's knowledge, Telscape and each Co-Borrower, during such period, has
observed or performed all of its covenants and other agreements, and satisfied
every condition contained in this Agreement and in the Notes to be observed,
performed or satisfied by it, and that such officer has obtained no knowledge of
any Event of Default except as specified in such certificate.

      (c) Promptly upon receipt thereof, furnish to Lender one copy of each
written financial audit report submitted to Telscape by independent accountants
resulting from any annual, interim or special audits made by them of Telscape's
books.

      (d) Furnish to Lender copies of all financial statements and material
reports which Telscape or any Co-Borrower may make to, or file with, the
Securities and Exchange Commission or any successor.

      (e) Pay promptly when due all taxes, assessments, governmental charges,
claims for labor, supplies, rent and other obligations, which, if unpaid, might
become a lien against the Collateral or Telscape's or any Co-Borrower's other
assets, except liabilities (i) being contested in good faith and by appropriate
proceedings, which proceedings do not involve any danger of the sale, forfeiture
or loss of the Collateral or any interest therein or a material part of
Telscape's or such Co-Borrower's other assets, and (ii) against which Telscape
has set up reserves satisfactory to the Lender.

      (f) Comply with all applicable laws, statutes, orders, rules, regulations,
and directions applicable to Telscape and each Co-Borrower and the Collateral or
any part thereof or operation of Telscape's or such Co-Borrower's business,
except where the failure to comply will not have a material adverse effect on
the value of the Collateral or the operations of Telscape on a consolidated
basis; provided that Telscape or such Co-Borrower may contest any such statutes,
orders, rules, regulations, and directions in any reasonable manner which will
not, in Lender's opinion, adversely affect Lender's rights or Telscape's
financial condition, business or operations or the priority of any lien or
security interest in the Collateral.

                                      -6-
<PAGE>
      (g) Maintain and preserve in full force and effect all rights, privileges,
licenses, and franchises applicable to Telscape and each Co-Borrower necessary
for the orderly and efficient conduct of Telscape and each Co-Borrower's
business as is now conducted including, without limitation, any licenses or
authorizations required by the FCC or any other public utility commission or
comparable regulatory agency (a "PUC") for the operation and maintenance of its
present operations.

      (h) Perform and comply in all material respects with all obligations under
the contracts and all other agreements to which it is a party or by which it is
bound relating to the Collateral except where the failure to do so would not
materially and adversely affect the value of the Collateral taken as a whole.

      (i) Advise Lender promptly, in reasonable detail (i) of any lien, security
interest, encumbrance or claim made or asserted against any of the Collateral,
(ii) of any material change in the composition of the Collateral, and (iii) of
the occurrence of any other event which would have a material adverse effect on
the aggregate value of the Collateral, the security interest created hereunder,
or on Telscape's or such Co-Borrower's financial condition, business, or
operations.

      (j) (1) Maintain books, records and accounts which, in reasonable detail,
accurately and fairly reflect its transactions and dispositions of its assets
and maintain a system of internal accounting controls sufficient to provide
reasonable assurances that (A) transactions are executed in accordance with
management's general or specific authorization, (B) transactions are recorded as
necessary (x) to permit preparation of financial statements in conformity with
GAAP and (y) to maintain accountability for assets, (C) access to assets is
permitted only in accordance with management's general or specific authorization
and (D) the recorded accountability for assets is compared with the existing
assets at reasonable intervals and appropriate action is taken with respect to
any differences, and (2) prepare all financial statements required hereunder in
accordance with GAAP consistently applied and in compliance with the regulations
of any governmental regulatory body having jurisdiction over Co-Borrower or
Co-Borrower's business and keep such books and records pertaining to its
financial affairs and to the Collateral at Telscape's and the Co-Borrowers'
address set forth above.

      (k) Permit Lender or its representatives, at all reasonable times, to
inspect and copy Telscape's and each Co-Borrower's books and records pertaining
to its financial affairs and to the Collateral;

      (l) Keep the Collateral at the original location of such Collateral as set
forth in the Collateral Schedule and such principal place of business of each
Co-Borrower at the address set forth above and not move any of the Collateral
from such locations, or change the location of Co-Borrower's principal place of
business without giving Lender at least thirty (30) days advance written notice
of such change or move, and in connection with any change in location of
Collateral or the principal place of business of any Co-Borrower, at its cost
and expense, from time to time, at the written request of Lender, execute,
deliver, file or record documents, agreements, instruments, certificates and (in
connection with movements of Collateral or principal places of business between
locations in the United States, Mexico, and/or other jurisdictions in Latin
America) opinions to the effect that the documents, agreements or instruments
have been validly executed and delivered by, and are binding and enforceable
upon, the applicable Co-Borrower(s) and do not conflict with the applicable
Co-Borrower's organizational documents, material contracts or applicable law (in
such manner and form as Lender may reasonably require) in order to create,
preserve, perfect, validate, satisfy, evidence or confirm the first priority
perfected security interest in, lien on, or trust or comparable security or
ownership interest in the Collateral, PROVIDED THAT notwithstanding the
foregoing, Co-Borrower shall not be required to undertake execute, deliver, file
or record such documents, agreements, instruments, certificates or opinions in
connection with any such move of Collateral to or within any jurisdiction in
Latin America other than Mexico, unless:

      (i) at the time of such change or move an Event of Default, or condition
      or event which with the passage of time and/or giving of notice would
      constitute an Event of Default, under this Agreement has occurred and is
      continuing;

      (ii) the Collateral is to be placed in a jurisdiction in Latin America
      other than Mexico and Advances financing Collateral in such jurisdiction,
      when aggregated with the Advance(s) made to finance the Collateral
      proposed to be moved to such jurisdiction, exceed $150,000, in which case
      as a condition precedent to such placement of Collateral in such
      jurisdiction (A) (1) Lender must be satisfied that a procedure or
      mechanism is available under the law of such jurisdiction for creating in
      favor of Lender a first-priority security interest in, lien on, or trust
      or comparable security or ownership interest in, Collateral located in
      such jurisdiction which is "perfected" or otherwise enforceable against
      such Co-Borrower and third parties; and (2) Co-Borrower shall have (I)
      executed and delivered (or caused to be executed and delivered) to Lender,
      if requested to do so by Lender, all documents reasonably requested by
      Lender for the purpose of creating in favor of Lender a first-priority
      security interest in, lien on, or trust or comparable security or
      ownership interest in, Collateral located in such jurisdiction which is
      "perfected" or otherwise enforceable against such Co-Borrower and third
      parties, together with evidence of (x) any necessary filing, registration
      or recordation of such documents, (y) the payment of any recording, stamp
      or other taxes measured by indebtedness or otherwise required as a result
      of the execution or any filing, registration or recordation of such
      documents and (z) to the extent available, the absence of any other liens
      on or security or other adverse ownership interests in such Collateral,
      and (II) delivered an opinion of counsel to the applicable Co-Borrower(s),
      dated the date of such Advance, in form and substance satisfactory to
      Lender to the effect that the documents have been validly executed and
      delivered by, and are binding and enforceable upon, the applicable
      Co-Borrower(s) and do not conflict with the applicable Co-Borrower's
      organizational documents, material contracts or applicable law, or (B)
      made other arrangements for securing the Advance(s) financing such
      Collateral satisfactory to Lender in its sole discretion; or

      (iii) the Collateral is to be placed in a jurisdiction in Latin America
      other than Mexico and Advances financing Collateral in jurisdictions in
      Latin America other than Mexico, when aggregated with the Advance(s) made
      to finance the Collateral proposed to be moved to such jurisdiction,
      exceed $450,000, in which case as a condition precedent to such placement
      of Collateral in such jurisdiction (A) (1) Lender must be satisfied that a
      procedure or mechanism is available under the law of such jurisdiction for
      creating in favor of Lender a first-priority security interest in, lien
      on, or trust or comparable security or ownership interest in, Collateral
      located in such jurisdiction which is "perfected" or otherwise enforceable
      against such Co-Borrower and third parties; and (2) Co-Borrower shall have
      (I) executed and delivered (or caused to be executed and delivered) to
      Lender, if requested to do so by Lender, all documents reasonably
      requested by Lender for the purpose of creating in favor of Lender a
      first-priority security interest in, lien on, or trust or comparable
      security or ownership interest in, Collateral located in such jurisdiction
      which is "perfected" or otherwise enforceable against such Co-Borrower and
      third parties, together with evidence of (x) any necessary filing,
      registration or recordation of such documents, (y) the payment of any
      recording, stamp or other taxes measured by indebtedness or otherwise
      required as a result of the execution or any filing, registration or
      recordation of such documents and (z) to the extent available, the absence
      of any other liens on or security or other adverse ownership interests in
      such Collateral, and (II) delivered an opinion of counsel to the
      applicable Co-Borrower(s), dated the date of such Advance, in form and
      substance satisfactory to Lender to the effect that the 

                                      -7-
<PAGE>
      documents have been validly executed and delivered by, and are binding and
      enforceable upon, the applicable Co-Borrower(s) and do not conflict with
      the applicable Co-Borrower's organizational documents, material contracts
      or applicable law) or (B) made other arrangements for securing the
      Advance(s) financing such Collateral satisfactory to Lender in its sole
      discretion.

      (m) Keep the Collateral in good repair and operating condition, ordinary
wear and tear excepted and permit Lender or its representatives at all times,
upon reasonable notice, to enter into and upon any premises where any of the
Collateral is located for the purpose of inspecting it, observing its use or
otherwise protecting its interest therein.

      (n) If any Collateral, in whole or in part, shall be lost, stolen or
destroyed or damaged, or is taken in any condemnation or similar proceeding by a
governmental authority (any such Collateral is referred to as the "Affected
Collateral"), promptly and fully notify Lender and (i) immediately place the
Affected Collateral in good condition and working order, or (ii) replace the
Affected Collateral with one of like value which is in good repair, condition,
and working order, and grant a first priority perfected security interest in,
lien on, or trust or comparable security ownership interest in such substitution
to the same extent that Lender had (or was required to have) in the Affected
Collateral, or (iii) prepay Lender, without prepayment premium, loans in an
amount equal to the value of such Affected Collateral.

      (o) At its cost and expense, from time to time, at the written request of
Lender, execute, deliver, file or record documents, agreements and instruments
(in such manner and form as Lender may reasonably require) in compliance with or
to accomplish the covenants and agreements of Telscape and each Co-Borrower in
this Agreement; in order to create, preserve, perfect, validate or satisfy the
security interest in, lien on, or trust or comparable security ownership
interest in the Collateral granted or required hereby, but in each case subject
to the conditions to such requirements as set forth elsewhere herein; or to
enable Lender to exercise and enforce its rights hereunder. Each Co-Borrower
also hereby authorizes Lender to file any such financing statement or amendment
thereto, without the signature of the Co-Borrower, or with a copy or telecopy of
the Co-Borrower's signature, to the extent permitted by applicable law, or
during upon the occurrence and during the continuance of an Event of Default
hereunder to execute any financing statement or amendment thereof on behalf of
each Co-Borrower as each Co-Borrower's attorney-in-fact.

      (p) Telscape shall take all actions necessary and commit adequate
resources to assure that computer-based and other systems of Telscape and its
Subsidiaries are able to process dates effectively, including dates before, on
and after January 1, 2000, without experiencing any Year 2000 Problem that could
cause a material adverse effect to the consolidated financial results of
Telscape. At the reasonable request of Lender, Telscape will provide Lender with
assurances and substantiations (including but not limited to the results of
internal and external audit reports prepared in the ordinary course of business)
reasonably acceptable to Lender that Telscape and its Subsidiaries is taking all
reasonable actions to assure the future conduct of its and their businesses and
operations before, on and after January 1, 2000 without experiencing a Year 2000
Problem causing a material adverse effect.

      (q) Furnish to Lender such additional information or documents,
certificates, reports and agreements regarding Telscape or such Co-Borrower, its
financial condition or the Collateral, as Lender may reasonably request.

      (r) Cause each Subsidiary of Telscape formed or acquired after the date
hereof to become a Co-Borrower hereunder in conformity with the requirements of
Section 1(b).

      (s) Use its best efforts to cause Interlink Communications, Inc. to become
a Co-Borrower hereunder on or before June 1, 1999 in conformity with the
requirements of Section 1(b).

      12. NEGATIVE COVENANTS: Until payment in full of the indebtedness, each of
Telscape and each Co-Borrower covenants that it will not directly or indirectly;

      (a) Sell, lease, assign, transfer, pledge, create, or permit a security
interest in, or otherwise encumber any of the Collateral, or any of its rights
therein, or permit any levy, lien or encumbrance thereon in favor of anyone
other than Lender, provided that a Co-Borrower may remove any expansion,
modification or add-ons to Collateral if (i) such expansion, modification or
add-on is not a replacement of or substitution for Collateral, (ii) such
expansion, modification or add-on was not financed with an Advance, and (iii)
immediately after such removal, the Collateral at issue (including equipment,
software and operating systems) has a level of functionality equal to or better
than existing immediately prior to the initiation of the expansion, modification
or add-on and is in good repair and operating condition, ordinary wear and tear
excepted.

      (b) Use, or permit the Collateral to be used, for any unlawful purpose or
in violation of any law, statue or ordinance if the effect of such use is to
materially and adversely affect the Collateral or the Lender's rights therein or
the operations of Telscape on a consolidated basis.

      (c) Permit the Collateral to become part of, or be affixed to, any real
property without first assuring, to the reasonable satisfaction of Lender, that
Lender's security interest will be prior and senior to any interest or lien then
held, or thereafter acquired, by any mortgagee of such real property or the
owner or purchaser of any interest therein.

      (d) Permit the Collateral to comprise a part of any Co-Borrower's
inventory.

      (e) Permit anything to be done that may impair the value of any of the
Collateral or the security intended to be afforded by this Agreement, if the
effect of such impairment has a material adverse effect on the value of the
Collateral, either individually or in the aggregate, or the security intended to
be afforded by this Agreement.

      (f) Dispose of any part of the Collateral without the express prior
written consent of Lender.

      (g) Change its name or change its structure in any material way without
giving Lender at least thirty (30) days advance written notice thereof.

      (h) Engage in any business activities or operations substantially
different from or unrelated to Telscape's or such Co-Borrower's present business
activities and operations.

      (i) Permit any Change in Control of Telscape to take place without
Lender's prior written consent. A "Change in Control" of Telscape shall be
deemed to have occurred upon any change in the direct or indirect control of, or
the ability or right to control, a majority of the voting shares of any class of
securities or ownership rights in Telscape or in the right and/or the power to
control the election of the board of directors of Telscape.

      (j) Permit any Co-Borrower to no longer be a Subsidiary of Telscape
without the prior written consent of Lender, such consent not to be unreasonably
withheld.

      13. RISK OF LOSS AND INSURANCE: All risk of loss of, damage to, or
destruction of the Collateral shall, at all times, be with each Co-Borrower.
Each Co-Borrower shall procure and maintain with financially sound and reputable
companies, insurance policies (i) insuring the Collateral against loss by fire,
explosion, theft and such other casualties as are usually insured against by
companies engaged in the same or similar business, and (ii) insuring such
Co-Borrower and the Lender against liability for personal injury and property
damage relating to the Collateral. The policies shall be in such form and in
such amounts and coverage as may be reasonably satisfactory to the Lender, with
losses payable to such Co-Borrower and the Lender as their respective interest
may appear. Each Co-Borrower shall, if requested by Lender, deliver to the
Lender 

                                      -8-
<PAGE>
evidence that such insurance coverage is in effect. All insurance shall (i)
contain a breach of warranty clause in favor of the Lender, (ii) provide that no
cancellation, reduction in amount or change in coverage thereof shall be
effective until at least thirty (30) days after receipt by the Lender of written
notice thereof, and (iii) be reasonably satisfactory in all respects to the
Lender. If any Co-Borrower fails to furnish such insurance or fails to pay the
premiums therefor, Lender may do so or may obtain insurance of its interest only
and add the amount of any such premium thereof to the other amounts secured
hereby. Lender is under no obligation nor duty, however, to pay such premiums or
obtain such insurance.

      14. DEFAULT: The occurrence of any one or more of the following will
constitute an "Event of Default" under this Agreement:

            (a) Any Co-Borrower shall fail to pay when due any Payment Amount or
any other amounts payable under this Agreement or any Note and such failure
continues for five (5) business days after receipt by such Co-Borrower of
written notice from Lender of such failure;

            (b) A breach or failure in the observance or performance by Telscape
or any Co-Borrower of any other material provision of this Agreement which is
not remedied within thirty (30) days after receipt by Telscape or such
Co-Borrower of notice of such breach or failure;

            (c) Any material representation, warranty or covenant made herein,
or in any certificate, document, financial or other statement delivered in
connection with this Agreement, or hereafter made by Telscape or any Co-Borrower
proves to have been incorrect in any material adverse respect when made or
given;

            (d) Telscape, any Co-Borrower, or any surety or guarantor of the
Indebtedness evidenced by this Agreement or a Note (i) files a petition or has a
petition filed against it under the bankruptcy code, or any proceeding for
relief of insolvent debtors; (ii) generally and materially fails to pay its
debts as such debts become due; (iii) shall admit in writing its inability to
pay its debts as they become due; (iv) has a custodian, trustee or receiver
appointed, voluntarily or otherwise, for it or its assets for relief of
insolvent or troubled debtors; (v) benefits from, or is subject to, the entry of
an order for relief by any court of insolvency; (vi) makes an assignment for the
benefit of creditors; (vii) becomes insolvent (however otherwise evidenced);
(viii) liquidates, winds-up, dissolves or suspends business; or (ix) has
commenced against it any case, proceeding or other action seeking the issuance
of a warrant of attachment, execution, distraint or similar process against all
or any substantial part of its assets, which results in the entry of an order
for any such relief which shall not have been vacated, discharged, or stayed or
bonded pending appeal within sixty (60) days from the entry thereof;

            (e) Telscape or any Co-Borrower shall (i) default in any payment of
any other instrument or agreement (other than with Lender) with an aggregate
principal amount outstanding in excess of $200,000 beyond the period of grace,
if any, provided in the applicable instrument or agreement, or (ii) default in
the observance of any other provision of such other instrument or agreement as
to cause, or permit the holder of such instrument or agreement to cause, the
obligations thereunder to become due prior to its stated maturity;

            (f) One or more judgments or decrees shall be entered against
Telscape or any Co-Borrower involving in the aggregate a liability (not paid or
fully covered by insurance) of $200,000 or more, and any of such judgments or
decrees shall not have been vacated, discharged, or stayed or bonded pending
appeal within sixty (60) days after the entry thereof; or

            (g) Any guaranty or subordination agreement required pursuant to
this Agreement is breached or becomes ineffective, or any guaranty or
subordinating creditor disavows its obligations under the guaranty or
subordination agreement; or

            (h) Telscape or any Co-Borrower fails to perform any of its
obligations under any other agreement or lease with Lender; or

            (i) At any time a Co-Borrower ceases to be a Subsidiary of Telscape;
or

            (j) If any Change in Control should occur without Lender's prior
written consent, which may be withheld in Lender's sole and absolute discretion.

      15. RIGHTS AND REMEDIES ON DEFAULT: At Lender's option, upon the
occurrence of any such Event of Default under Section 14, and at any time
thereafter, at Lender's option, Lender's commitment to lend shall terminate
and/or all unmatured Indebtedness evidenced by the Notes will immediately become
due and payable without presentation, demand, protest, or notice of any kind,
all of which are expressly waived. Lender may exercise, from time to time, any
rights and remedies available to it under this Agreement, any Note, the Uniform
Commercial Code and other applicable law. Telscape and each Co-Borrower agree
that upon the occurrence and during the continuance of an Event of Default, to
the extent permitted by applicable law (i) any amounts payable under this
Agreement or under the Notes shall thereafter bear interest at a rate per annum
equal to the Interest Rate plus three percent (3%), or the maximum rate per
annum allowed by law, whichever is less, compounded monthly and payable on
demand (both before and after judgment), until the Indebtedness is paid in full
(which payment of Indebtedness in the event of acceleration shall not be subject
to any prepayment premium) or the Event of Default is cured, (ii) it will, at
Lender's request, assemble the Collateral and make it available to Lender at
places which Lender shall reasonably select, and (iii) Lender, by itself or its
agent, may, without notice to any person and without judicial process of any
kind, enter into any premises or upon any land owned, leased or otherwise under
the real or apparent control of Telscape or any Co-Borrower, or any agent of any
Co-Borrower, where the Collateral may be, or where Lender believes the
Collateral may be, and disassemble, render unusable, and/or repossess all or any
item of the Collateral, disconnecting and separating the Collateral from any
other property. Each Co-Borrower expressly waives all further rights to
possession of the Collateral after the occurrence and during the continuance of
an Event of Default and all claims for injuries suffered through, or loss caused
by, such entering and/or repossession.

Lender shall have the right to sell, lease or otherwise dispose of the
Collateral (or contract to do so), whether in its then condition or after
further preparation or processing, either at public or private sale, in lots or
in bulk, for cash or for credit, with or without warranties or representations,
and upon such terms and conditions as Lender, in its sole discretion, may deem
advisable. Lender shall have the right to purchase at any such sale. Lender will
give the applicable Co-Borrower reasonable notice of the time and place of any
public sale of the Collateral or of the time after which any private sale or
other intended disposition of the Collateral is to be made. Unless otherwise
provided by law, the requirement of reasonable notice shall be met if such
notice is delivered to the address of the Co-Borrowers and Telscape set forth
above at least ten (10) days before the time of the sale or disposition. Any
proceeds of any disposition by Lender of any of the Collateral may be first
applied by Lender to the payment of expenses, including reasonable attorneys'
fees and legal expenses, incurred in connection with the repossession, care,
safekeeping, sale or otherwise of any or all of the Collateral, or in any way
relating to the rights of Lender hereunder. Any balance of such proceeds may be
applied by Lender toward the payment of the Indebtedness in such order as
Lender, in its sole discretion, shall determine. The Co-Borrowers shall be
liable for, and shall pay to Lender on demand, any deficiency which may remain
after such sale, lease or other disposition, and Lender agrees to remit to the
Co-Borrowers any surplus resulting therefrom.

      16. GENERAL AUTHORITY: Upon the occurrence and during the continuance of
an Event of Default hereunder, Lender shall have the full power to exercise at
any time and from time to time all or any of the following powers with respect
to all or any of the Collateral:

                                      -9-
<PAGE>
            (a) To demand, sue for collection, receive and give acquittance for
any and all monies due or to become due upon or by virtue thereof;

            (b) To receive, take, endorse, assign and deliver any and all
checks, notes, drafts, documents and other property taken or received by Lender
in connection therewith;

            (c) To settle, compromise, compound, prosecute or defend any action
or proceeding with respect thereof;

            (d) To sell, transfer, assign or otherwise deal in or with the same
or the proceeds thereof, as fully and effectually as if Lender were the absolute
owner thereof; and

            (e) In general, to do all things necessary to perform the terms of
this Agreement, including, without limitation, to take any action or proceedings
which Lender deems necessary or appropriate to protect and preserve the security
interest of Lender in the Collateral. In the case of failure of Telscape or any
Co-Borrower to comply with any provision of this Agreement which constitutes an
Event of Default and is continuing, Lender shall have the right, but shall not
be obligated, to so comply in whole or in part, and all moneys spent, and
expenses and obligations incurred or assumed by Lender in connection with such
performance or compliance, shall be payable on demand together with interest on
such amounts equal to the Interest Rate plus three percent (3%) from the date
and amount is expended or advanced by the Lender until paid. Such sums plus
interest shall constitute indebtedness secured hereby. Lender's effecting such
compliance shall not be a waiver of Telscape's or any Co-Borrower's default.
Lender shall be under no obligation or duty to exercise any of the powers hereby
conferred upon it.

      17. EXPENSES: Telscape and each Co-Borrower will, upon demand, pay to
Lender all reasonable costs and expenses, including without limitation
attorneys' fees and expenses, incurred by Lender in the creation, satisfaction,
protection, defense or enforcement of Lender's rights hereunder, or in seeking
to collect the Indebtedness evidenced by this Agreement.

      18. NOTICES: Notices, demands and other communications required to be
given hereunder to be effective shall be transmitted in writing by telex,
telecopy, or facsimile transmission and confirmed by a similar mailed writing,
by hand delivery, by first class, registered or certified mail, return receipt
requested, or an overnight courier service, addressed to Lender at 501 Corporate
Centre Drive, Suite 600, Franklin, TN 37067 (Attention: Director Operations &
Administration) or to the applicable as the case may be, at the address set
forth above or at such other address as any party may hereinafter substitute by
written notice. Notice shall be effective four (4) days after the date it was
mailed or upon receipt, whichever is earlier.

      19. INDEMNIFICATION: Telscape and each Co-Borrower shall indemnify Lender
against and hold Lender harmless from any and all claims, actions, suits,
damages, allegations, liabilities, and liens and all costs and expenses,
including, without limitation, reasonable attorneys' fees incurred by Lender,
arising out of or in any way related to a Co-Borrower's ownership or use of the
Collateral, or in connection with the transactions contemplated by this
Agreement, including without limitation, the granting and perfection of the
security interest and lien described herein.

      20. FCC AND PUC APPROVALS; NOTIFICATION: The exercise of any rights
hereunder by the Lender that may require FCC or PUC approval shall be subject to
obtaining such approval. Pending obtaining any such FCC or PUC approval, each
Co-Borrower will refrain from taking or permitting any action to be taken which
is contrary to the interest of the Lender. In accordance with the requirements
of 47 C.F.R. Section 22.917 (1984), or any successor provision, the Lender
agrees to notify the applicable Co-Borrower and the FCC (if required) in writing
at least ten (10) days prior to the repossession, in accordance with the
Agreement, of all or any part of the Collateral which is subject to the
regulation.

      21. ASSIGNMENT: Lender may, in whole or in part, without notice to, or the
consent of Telscape or any Co-Borrower, sell, assign, grant a security interest
in or pledge its interest in the Collateral and/or a Note and any amounts due or
to become due hereunder to any third party ("Assignee"). Upon receiving written
notice from Lender, a Co-Borrower shall, if so directed, pay the amounts due
hereunder, directly to Assignee. Any Assignee shall be entitled to rely on
Telscape's and each Co-Borrower's agreements, representations, warranties, and
covenants contained herein, as applicable, and shall be considered a third-party
beneficiary thereof. Telscape and each Co-Borrower shall also execute and
deliver to Lender, or any Assignee, any additional documentation as Lender or
Assignee may reasonably request. Without Lender's prior written consent, neither
Telscape nor any Co-Borrower shall assign or transfer its obligations hereunder.
Any attempted transfer by Telscape or any Co-Borrower shall be void ab initio.

      22.   MISCELLANEOUS:

      (a) No failure or delay by the Lender to exercise any right, power or
privilege hereunder shall operate as a waiver of any such right, power or
privilege, nor shall any single or partial exercise of any right, power or
privilege preclude any other or future exercise thereof. The Lender may waive
any default before or after the same has been declared and restore this
Agreement to full force without impairing any rights hereunder, such right of
waiver being a continuing one. The waiver of any provision hereunder will not be
effective unless in writing signed by the Lender.

      (b) If any provision in this Agreement or a Note shall be prohibited or
unenforceable, such provision shall be ineffective to the extent of such
prohibition or unenforceability without invalidating the remaining provisions.

      (c) To the extent that the Indebtedness is now or hereafter secured by
property other than the Collateral, or by the guaranty, endorsement or property
of any other person, corporation or entity, then Lender shall have the right, in
its sole discretion, to determine which rights, security, liens, security
interest or remedies it shall, at any time, pursue, relinquish, subordinate,
modify, or take any other action with respect thereto without, in any way,
modifying or affecting any of them or any of its rights hereunder.

      (d) Lender's duty of care (as imposed by law) with respect to the
Collateral in its possession shall be deemed fulfilled if Lender exercises
reasonable care in physically safekeeping such Collateral, or in the case of
Collateral in the custody or possession of a bailee or other third person,
exercises reasonable care in the selection of the bailee or other third person,
and Lender need not otherwise preserve, protect, insure, or care for any
Collateral.

      (e) No right or remedy is exclusive of any other provided under this
Agreement or permitted by law or equity. All such rights and remedies shall be
cumulative and may be exercised singularly or concurrently at Lender's option.
The exercise or enforcement of any one such right or remedy shall neither be a
condition to, nor bar the exercise or enforcement of any other.

      (f) All representations and warranties made herein or in any document,
certificate or statement delivered pursuant thereto, or in connection therewith,
shall survive the execution and delivery of this Agreement and the Notes.

      (g) Subject to the notice requirement in Section 14, Telscape and each
Co-Borrower waives presentment, demand, protest and notice to the extent
permitted by applicable law.

      (h) Time is of the essence with regard to each and every provision of this
Agreement and each Note.

      (i) This Agreement may be executed in more than one counterpart, all of
which taken together, shall constitute one agreement.

      23. SUCCESSORS AND ASSIGNS: This Agreement shall be binding on the parties
and inure to the benefit of Lender and each Co-Borrower and their successors and
permitted assigns.

                                      -10-
<PAGE>
      24. GOVERNING LAW: This Agreement and the Notes are being delivered to
Lender in the State of Tennessee and shall be construed in accordance with and
governed by the laws of such state, except to the extent the internal laws of
another jurisdiction are required to be applied in connection with the exercise
of rights pertaining to Collateral in that jurisdiction.

      25. ENTIRE AGREEMENT: This Agreement constitutes the entire agreement
between Lender, Telscape and each Co-Borrower with respect to the subject matter
hereof and supersedes all previous negotiations, proposals, commitments,
writings, and understandings of any nature whatsoever.

                                      -11-
<PAGE>
                       SCHEDULE OF BORROWING SUBSIDIARIES

      By executing this Schedule of Borrowing Subsidiaries attached to and
forming a part of the Loan and Security Agreement dated as of December 7, 1998
(the "Loan Agreement"), between and among Telscape International, Inc. a Texas
corporation ("Telscape"), Newbridge Financial Services, a unit of GE Capital
Corporation (the "Lender"), (i) each of TELSCAPE USA, INC., a Texas corporation,
TSCP INTERNATIONAL, INC., a Texas corporation, and MSN COMMUNICATIONS, INC., a
California corporation, represents and warrants that it is a Domestic Subsidiary
of Telscape, joins as a party to the Loan Agreement, assumes the obligations of
a Domestic Co-Borrower under the Loan Agreement, and confirms that it is bound
by the terms and conditions of the Loan Agreement, including but not limited to
the grant to Lender of a security interest in all Collateral (the execution of
this instrument by the Co-Borrowers constitutes a grant of a security interest
in the Collateral) and (ii) each of TELSCAPE DE MEXICO, SA DE CV, a corporation
incorporated under the laws of Mexico D.F., N.S.I., SA DE CV, a corporation
incorporated under the laws of Mexico D.F., TELEREUNION INTERNATIONAL, SA DE CV,
a corporation incorporated under the laws of Mexico D.F., VEXTRO DE MEXICO, SA
DE CV, a corporation incorporated under the laws of Mexico D.F., LAN AND WAN, SA
DE CV, a corporation incorporated under the laws of Mexico D.F., SERVICIOS
CORPORATIVOS VEXTRO, SA DE CV, a corporation incorporated under the laws of
Mexico D.F., TELEREUNION, SA DE CV, a corporation incorporated under the laws of
Mexico D.F., and MS NOTICIAS, SA DE CV, a corporation incorporated under the
laws of Mexico D.F. represents and warrants that it is a Foreign Subsidiary of
Telscape, joins as a party to the Loan Agreement, assumes the obligations of a
Foreign Co-Borrower under the Loan Agreement, and confirms that it is bound by
the terms and conditions of the Loan Agreement, including but not limited to the
grant to Lender of a security interest in all Collateral (the execution of this
instrument by the Co-Borrowers constitutes a grant of a security interest in the
Collateral). The undersigned Co-Borrowers acknowledge and agree that (i) future
Subsidiaries of Telscape are required to become additional Co-Borrowers under
the Loan Agreement without the consent of any other Co-Borrower by execution of
a form of the Annex to this Schedule of Borrowing Subsidiaries by Telscape, the
Subsidiary and the Lender; (ii) the Lender is willing to extend certain credit
to the undersigned Co-Borrowers, subject to the terms and conditions set forth
in the Loan Agreement, including the condition that the undersigned Domestic
Co-Borrowers will be jointly and severally liable for the payment of all
Indebtedness owed by Telscape or any Co-Borrower to Lender under the Loan
Agreement and the condition that the undersigned Foreign Co-Borrowers will be
jointly and severally liable for the payment of all Indebtedness owed by any
Foreign Co-Borrower to Lender under the Loan Agreement; (iii) without this
condition of joint and several liability, Lender would not be willing to extend
credit to any Co-Borrower; and (iv) the undersigned Co-Borrowers and other
Subsidiaries of Telscape which may become additional Co-Borrowers under the Loan
Agreement are (or will be) related entities, and the undersigned Co-Borrowers
expect to increase their respective businesses, and to benefit directly and
indirectly, through the use of the equipment to be acquired by it and the other
Co-Borrowers with the proceeds of the loans to be made pursuant to the Loan
Agreement.

      This Schedule of Borrowing Subsidiaries to the Loan Agreement is attached
to, and forms a part of, the Loan Agreement, is being delivered to Lender in the
State of Tennessee together with the Loan Agreement and shall be construed in
accordance with and governed by the laws of such state, except to the extent the
internal laws of another jurisdiction are required to be applied in connection
with the exercise of rights pertaining to Collateral in that jurisdiction.
Capitalized terms used in this Schedule of Borrowing Subsidiaries without
definition shall have the meanings set forth in the Loan Agreement to which this
Schedule is attached and forms a part.

      This Schedule of Borrowing Subsidiaries may be executed in any number of
counterparts (by facsimile transmission or otherwise) and by the different
parties hereto on separate counterparts, each of which, when so executed, shall
be deemed an original, but all such counterparts shall constitute but one and
the same document.

      IN WITNESS WHEREOF, the parties have executed this Schedule of Borrowing
Subsidiaries to the Loan and Security Agreement by their duly authorized
representatives:
                                                   TELSCAPE:

                                                   TELSCAPE INTERNATIONAL, INC.

                                                   BY:

                                                   TITLE:


                                                   CO-BORROWERS:

                                                   TELSCAPE USA, INC.

                                                   BY:

                                                   TITLE:


                                                   TSCP INTERNATIONAL, INC.

                                                   BY:

                                                   TITLE:


                                                   MSN COMMUNICATIONS, INC.

                                                   BY:

                                                   TITLE:

                                             (SIGNATURES CONTINUED ON NEXT PAGE)

                                      -12-
<PAGE>
                                                   TELSCAPE DE MEXICO, SA DE CV

                                                   BY:

                                                   TITLE:


                                                   N.S.I., SA DE CV

                                                   BY:

                                                   TITLE:


                                                   TELEREUNION INTERNATIONAL, 
                                                     SA DE CV

                                                   BY:

                                                   TITLE:


                                                   VEXTRO DE MEXICO, SA DE CV

                                                   BY:

                                                   TITLE:


                                                   LAN AND WAN, SA DE CV

                                                   BY:

                                                   TITLE:


                                                   SERVICIOS CORPORATIVOS 
                                                     VEXTRO, SA DE CV

                                                   BY:

                                                   TITLE:


                                                   TELEREUNION, SA DE CV

                                                   BY:

                                                   TITLE:


                                                   MS NOTICIAS, SA DE CV

                                                   BY:

                                                   TITLE:


                                                   LENDER:

                                                   NEWBRIDGE FINANCIAL SERVICES,
                                                   A UNIT OF GE CAPITAL 
                                                   CORPORATION

                                                   BY:

                                                   TITLE:

                                      -13-
<PAGE>
                                    EXHIBIT A

               FORM OF ANNEX TO SCHEDULE OF BORROWING SUBSIDIARIES

      By executing this Annex to the Schedule of Borrowing Subsidiaries attached
to and forming a part of the Loan and Security Agreement dated as of December 7,
1998, (the "Loan Agreement"), between and among Telscape International, Inc. a
Texas corporation ("Telscape"), Newbridge Financial Services, a unit of GE
Capital Corporation (the "Lender"), Domestic and/or Foreign Subsidiaries of
Telscape which are signatories to the Schedule of Borrowing Subsidiaries
attached to, and forming a part of, the Loan Agreement, and such additional
Domestic and/or Foreign Subsidiaries of Telscape which may become a party to the
Loan Agreement pursuant to Section 1(b) thereof, ____________________ represents
and warrants that it is a [FOREIGN OR DOMESTIC] Subsidiary of Telscape, joins as
a party to the Loan Agreement, assumes the obligations of a [FOREIGN/DOMESTIC]
Co-Borrower under the Loan Agreement, and confirms that it is bound by the terms
and conditions of the Loan Agreement, including but not limited to the grant by
_______________________ to Lender of a security interest in all its right, title
and interest in and to the Collateral as provided in the Loan Agreement. (The
execution of this instrument constitutes a grant by ___________________________
of a security interest in the Collateral). acknowledges and agrees that one or
more other Subsidiaries of Telscape may become additional [FOREIGN/DOMESTIC]
Co-Borrowers under the Loan Agreement without the consent of any other
[FOREIGN/DOMESTIC] Co-Borrower by execution of a form of the Annex to the
Schedule of Borrowing Subsidiaries by Telscape, the Subsidiary and the Lender.
______________________ acknowledges and agrees that (i) other Subsidiaries of
Telscape may become additional [FOREIGN/DOMESTIC] Co-Borrowers under the Loan
Agreement without the consent of any other Co-Borrower by execution of a form of
the Annex to this Schedule of Borrowing Subsidiaries by Telscape, the Subsidiary
and the Lender; (ii) the Lender is willing to extend certain credit to the
Co-Borrowers, subject to the terms and conditions set forth in the Loan
Agreement, including the condition that all Domestic Co-Borrowers will be
jointly and severally liable for the payment of all Indebtedness owed by
Telscape or any Co-Borrower to Lender under the Loan Agreement and the condition
that all Foreign Co-Borrowers will be jointly and severally liable for the
payment of all Indebtedness owed by any Foreign Co-Borrower to Lender under the
Loan Agreement; (iii) without this condition of joint and several liability,
Lender would not be willing to extend credit to any Co-Borrower; and (iv)
______________________ , the existing Co-Borrowers and Subsidiaries of Telscape
which may become additional Co-Borrowers under the Loan Agreement are (or will
be) related entities, and ______________________ expects to increase its
business, and to benefit directly and indirectly, through the use of the
equipment to be acquired by it and the other Co-Borrowers with the proceeds of
the loans to be made pursuant to the Loan Agreement.

      _______________________ authorizes the Lender to attach this Annex to the
Schedule of Borrowing Subsidiaries to the Loan Agreement, which is attached to,
and forms a part of, the Loan Agreement. This Annex to the Schedule of Borrowing
Subsidiaries to the Loan Agreement is being delivered to Lender in the State of
Tennessee and shall be construed in accordance with and governed by the laws of
such state, except to the extent the internal laws of another jurisdiction are
required to be applied in connection with the exercise of rights pertaining to
Collateral in that jurisdiction. Capitalized terms used in this Annex to the
Schedule of Borrowing Subsidiaries without definition shall have the meanings
set forth in the Loan Agreement to which this Annex and the Schedule of
Borrowing Subsidiaries are attached and form a part.

      This Annex may be executed in any number of counterparts (by facsimile
transmission or otherwise) and by the different parties hereto on separate
counterparts, each of which, when so executed, shall be deemed an original, but
all such counterparts shall constitute but one and the same document.

      IN WITNESS WHEREOF, the parties have executed this Annex to Schedule of
Borrowing Subsidiaries by their duly authorized representatives:


                                                   TELSCAPE:

                                                   TELSCAPE INTERNATIONAL, INC.

                                                   BY:

                                                   TITLE:


                                                   CO-BORROWER:

                                                   BY:

                                                   TITLE:


                                                   LENDER:

                                                   NEWBRIDGE FINANCIAL SERVICES,
                                                   A UNIT OF GE CAPITAL 
                                                   CORPORATION

                                                   BY:

                                                   TITLE:

                                      -14-