Document:

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                                                                 Exhibit 10.2(a)

                         INFONET SERVICES CORPORATION
                       1998 EMPLOYEE STOCK PURCHASE PLAN

                                 AMENDMENT TO
                      LOAN, SECURITY AND PLEDGE AGREEMENT
                      -----------------------------------

     This AMENDMENT TO LOAN, SECURITY AND PLEDGE AGREEMENT (this "Agreement") is
                                                                  ---------
entered into as of January 1, 2000 (the "Effective Date") by and between
                                         --------------
_____________________, an individual (the "Borrower"), and Infonet Services
                                           --------
Corporation, a Delaware corporation (the "Company"; the Borrower and the
                                          -------
Company, collectively, the "Parties").
                            -------

                                R E C I T A L S
                                ---------------

     WHEREAS, the Borrower and the Company have previously entered into a Loan
Pledge and Security Agreement (the "Agreement").

     WHEREAS, the Borrower and the Company wish to enter into an amendment to
the Agreement to permit the Borrower to transfer some of the Shares pledged
pursuant to the Agreement.

     NOW, THEREFORE, in consideration of the premises and mutual promises herein
made, and in consideration of the representations, warranties, and covenants
herein contained, the Parties agree as follows.

     1.   Section 4 of the Agreement is hereby deleted and replaced in its
entirety by the following:

          "1.  Pledge of Shares.  The Borrower hereby (a) pledges and deposits
               ----------------
     as security with the Company that number of the Shares as the Company may
     deem necessary for such security (the "Pledged Shares") and agrees to
     deliver to the Company certificates therefor accompanied by stock powers
     duly executed in blank by the Borrower and (b) assigns, transfers,
     hypothecates, mortgages, charges and sets over to the Company all of the
     Borrower's right, title and interest in and to the Pledged Shares (and in
     and to the certificates or instructions evidencing such Pledged Shares), to
     be held by the Company upon the terms and conditions set forth in this
     Agreement.  A copy of the form stock power is attached hereto as Exhibit 1.

          1.1  Dividends.  Until payment in full at maturity of the Loan, all
               ---------
               dividends and other amounts received by the Company as a result
               of the Company's record ownership of the Pledged Shares (if any)
               shall be applied to the repayment of the Loan.

          1.2  Voting Rights.  Until payment in full at maturity of the Loan,
               -------------
               and as long as the Borrower is not in default in the performance
               of any of the terms of this Agreement, the Borrower shall have
               the right (if any) to vote the Pledged Shares on all corporate
               questions; provided, however, that no vote
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               shall be cast on any action taken which would violate or be
               inconsistent with the terms of this Agreement or which would
               have the effect of materially impairing the position or
               interests of the Company.  The Company shall execute due and
               timely proxies in favor of the Borrower to this end.

          1.3  Adjustments.  In the event that, prior to payment in full at
               -----------
               maturity of the Loan, any share dividend, reclassification,
               readjustment, or other change is declared or made in the capital
               structure of the Company, all new, substituted, and additional
               Pledged Shares or other securities issued by reason of any change
               shall be held by the Company in addition to, or in substitution
               for, as the case may be, and in the same manner as the Pledged
               Shares.

          1.4  Warrants and Rights.  In the event that, prior to payment in full
               -------------------
               at maturity of the Loan, subscription warrants or any other
               rights or pledges shall be issued in connection with the Pledged
               Shares, such warrants, rights, and pledges shall be immediately
               assigned by the Company to the Borrower, and if exercised by the
               Borrower, all new shares or other securities so acquired by the
               Borrower shall be immediately assigned to the Company to be held
               in the same manner as the Pledged Shares.

          1.5  Repayment of the Loan.  On payment in full at maturity of the
               ---------------------
               Loan, the Company shall transfer to the Borrower all of the
               Pledged Shares and all rights received by the Company as a result
               of the Company's record ownership of the Pledged Shares.

          1.6  Default.  In the event that the Borrower defaults in the
               -------
               performance of any of the terms of this Agreement, the Company
               shall (a) be entitled to vote all or any part of the Pledged
               Shares and otherwise act with respect to the Pledged Shares as if
               it were the outright owner thereof (Borrower hereby irrevocably
               constituting and appointing Company the proxy and attorney-in-
               fact of the Borrower) and (b) have the rights and remedies
               provided in the California Commercial Code.  In this connection,
               the Company may, on five days' written notice to the Borrower,
               and without liability for any diminution in price that may have
               occurred, sell the Pledged Shares in a commercially reasonable
               manner and for such a commercially reasonable price as the
               Company may determine.  At any bona fide public sale, the
               Borrower shall be free to purchase all of any part of the Pledged
               Shares.  Out of the proceeds of any sale the Company may retain
               an amount equal to outstanding balance of the Loan, plus the
               amount of the expenses of the sale, and shall pay any balance of
               such sale to the Borrower.  If the proceeds of the sale are
               insufficient to cover the outstanding balance of the Loan plus
               expenses of the sale, the Borrower shall remain liable to the
               Company for any deficiency, in accordance with the provisions set
               forth in Commercial Code Section 9504.

                                      -2-
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     2.  Capitalized terms used but not defined in this Amendment shall have the
meanings assigned to them in the Agreement.

     IN WITNESS WHEREOF, the Parties hereto have executed this Agreement as of
the date first above written.

                                    Infonet Services Corporation

                                    By:____________________________

                                      Name:

                                      Title:

                                    The Borrower

                                      ____________________________
                                      Name

                                      -3-<PAGE>

                                                                 EXHIBIT 10.3(a)

                         INFONET SERVICES CORPORATION
                    INCENTIVE STOCK OPTION AWARD AGREEMENT

          This Agreement (this "Agreement"), dated as of ___________________, is
made between INFONET SERVICES CORPORATION (the "Company") and _______________
(the "Optionee").  All capitalized terms used herein that are not defined herein
shall have the respective meanings given to such terms in the Infonet Services
Corporation 1999 Stock Option Plan (the "Plan").  The terms and conditions of
the Plan, together with all defined terms included in the Plan are, by this
reference, incorporated in this Agreement as if set forth in this Agreement in
their entirety.

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

     1.  Grant of Option.  Pursuant to the provisions of the Plan, the Company
         ---------------
hereby grants to the Optionee the right and option to purchase from the Company
(the "Option") all or any part of an aggregate of _____________ shares of the
Class B common stock of the Company (the "Stock").  The percentages listed below
of all shares of Stock purchased at any time in accordance with this Agreement
shall have a purchase price per share equal to the amount set forth below
opposite each such percentage:
<TABLE>
<CAPTION>

                   Percentage                     Price
                   -------------------------------------
                   <S>                            <C>

</TABLE>

          2.  Expiration.  The Option shall expire on ___________________.
              ----------

          3.  Exercise of Option.  Subject to the other terms of this Agreement
              ------------------
and the Plan, the Option may be exercised on or after the dates indicated below,
in whole or in part, as to that percentage of the total shares of Stock subject
to the Option as set forth below opposite each such date, plus any shares of
Stock as to which the Option could have been exercised previously, but was not
so exercised:

<TABLE>
<CAPTION>

                  Date                             Percentage
                  -------------------------------------------
                 <S>                             <C>
</TABLE>
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          4.  Nontransferability.  The Option, which is personal to the
              ------------------
Optionee, shall not be transferable otherwise than by will or the laws of
descent and distribution, and is exercisable, during the lifetime of the
Optionee, only by him; provided that the Option may be exercised after the
Optionee's death by the beneficiary most recently named by the Optionee in a
written designation thereof filed by the Optionee with the Company, or, in lieu
of any such surviving beneficiary, as designated by the Optionee by will or by
the laws of descent and distribution, in accordance with the Plan.

          5.  No Rights as Stockholder.  Neither the Optionee nor any other
              ------------------------
person shall  become the beneficial owner of the shares of Stock subject to the
Option, nor have any rights to dividends or other rights as a shareholder with
respect to any such shares, until the Optionee has exercised the Option in
accordance with the provisions of the Plan.

          6.  No Right to Continued Employment .  The Option shall not confer
              --------------------------------
upon the Optionee any right to be retained in the service of the Company or a
Subsidiary, nor restrict in any way the right of the Company or any Subsidiary,
which right is hereby expressly reserved, to terminate his employment at any
time with or without cause.

          7.  Relationship with Plan.  Notwithstanding any provision herein to
              ----------------------
the contrary, the Option provides the Optionee with no greater rights or claims
than are specifically provided for under the Plan.

          8.  Compliance with Laws, Regulations, Etc.  The Option and the
              --------------------------------------
obligation of the Company to sell and deliver shares of Stock upon the exercise
thereof in accordance with the Plan shall be subject in all respects to (a) all
applicable Federal and state laws, rules and regulations and (b) any
registration, qualification, approvals or other requirements imposed by any
government or regulatory agency or body.  Moreover, the Option may not be
exercised if its exercise, or the receipt of shares of Stock pursuant thereto,
would be contrary to applicable law.

          9.  Investment Representation.  If at the time of exercise of all or
              -------------------------
part of the Option  the Stock is not registered under the Securities Act of
1933, as amended (the "Securities Act"), and/or there is no current prospectus
in effect under the Securities Act with respect to the Stock, the Optionee shall
execute, prior to the issuance of any shares of Stock to the Optionee by the
Company, an agreement (in such form as the Committee may specify) in which the
Optionee, among other things, represents, warrants and agrees that (a) the
Optionee (i) is purchasing or acquiring the shares acquired under this Agreement
for the Optionee's own account, for investment only and not with a view to the
resale or distribution thereof, (ii) has knowledge and experience in financial
and business matters, (iii) is capable of evaluating the merits and risks of
owning any shares of Stock purchased or acquired under this Agreement, and (iv)
is a person who is able to bear the economic risk of such ownership and (b) any
subsequent offer for sale or distribution of any of such shares shall be made
only pursuant to (i) a registration statement on an appropriate form under the
Securities Act, which registration statement has become effective and is current
with regard to the shares being offered or sold, or (ii) a specific exemption
from
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the registration requirements of the Securities Act, it being understood that to
the extent any such exemption is claimed, the Optionee shall, prior to any offer
for sale or sale of such shares, obtain a prior favorable written opinion, in
form and substance satisfactory to the Committee, from counsel for or approved
by the Committee, as to the applicability of such exemption thereto.

          10.  Optionee Bound by Plan.  The Optionee hereby acknowledges receipt
               ----------------------
of a copy of the Plan and agrees to be bound by all of the terms and provisions
thereof, including the terms and provisions adopted after the granting of the
Option but prior to the complete exercise hereof, subject to the last paragraph
of Section 14 of the Plan as in effect on the date hereof.

          11.  Notices.  Any notice hereunder shall be in writing and if to the
               -------
Company shall be addressed to it at 2160 East Grand Avenue, El Segundo,
California 90245, Attention:  Mr. Ernest U. Gambaro, and if to the Optionee,
shall be addressed to him at the address set forth below his signature on the
signature page of this Agreement, subject to the right of either party to
designate at any time hereafter in writing some other address.

          12.  Governing Law.  THE VALIDITY, INTERPRETATION, CONSTRUCTION AND
               -------------
PERFORMANCE OF THIS AGREEMENT SHALL BE GOVERNED BY THE LAWS OF THE STATE OF
CALIFORNIA APPLICABLE TO CONTRACTS EXECUTED AND TO BE PERFORMED ENTIRELY WITHIN
SUCH STATE, WITHOUT REGARD TO THE CONFLICT OF LAW PROVISIONS THEREOF.

          13.  Severability.  If any of the provisions of this Agreement should
               ------------
be deemed unenforceable, the remaining provisions shall remain in full force and
effect.

          14.  Modification.  Except as otherwise permitted by the Plan, this
               ------------
Agreement may not be modified or amended, nor may any provision hereof be
waived, in any way except in writing signed by the party against whom
enforcement thereof is sought.

          15.  Counterparts.  This Agreement has been executed in two
               ------------
counterparts, each of which shall constitute one and the same instrument.

          16.  Previous Agreements.  It is hereby agreed and understood that any
               -------------------
stock option award agreements entered into by the parties hereto prior to the
date hereof under the Plan are hereby terminated and superseded and of no
further force or effect.
<PAGE>

     IN WITNESS WHEREOF, Infonet Services Corporation has caused this Agreement
to be executed by a duly authorized officer and the Optionee has executed this
Agreement, both as of the day and year first above written.

                              INFONET SERVICES CORPORATION

                              By:_________________________________
                                 Name:
                                 Title:

                              ___________________________________

                              Address for Notices:
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<TABLE>
<CAPTION>

                                            NOTATIONS AS TO PARTIAL EXERCISE
                                            --------------------------------
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    Date of         Number of Shares    Number of Shares of    Balance of Shares        Authorized          Notation
    Exercise      of Stock subject to    Stock delivered to    of Stock on Option       Signature             Date
                        Exercise              Optionee
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<S>               <C>                   <C>                   <C>                   <C>                 <C>
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</TABLE>

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