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                                                                EXHIBIT 10.18(a)

                               AMENDMENT TO THE
                         INFONET SERVICES CORPORATION
                            2000 OMNIBUS STOCK PLAN



     This Amendment (the "Amendment") to the Infonet Services Corporation 2000
Omnibus Stock Plan (the "Plan") is made as of November 21, 2000, by Infonet
Services Corporation, a Delaware corporation (the "Company").

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

     WHEREAS, the Board of Directors of the Company has determined that it is
appropriate and in the best interests of the Company to amend the Plan as set
forth herein;

     NOW, THEREFORE, the Plan is hereby amended as set forth herein:

     1. Capitalized terms used herein which are not otherwise defined herein but
are defined in the Plan shall have the meanings given to such terms in the Plan.

     2. Article I of the Plan is hereby amended by the addition of the following
provisions:

        "1.42 Family Member shall mean an Optionee's child, stepchild,
     grandchild, parent, stepparent, grandparent, spouse, former spouse,
     sibling, niece, nephew, mother in law, father in law, son in law, daughter
     in law, brother in law or sister in law, including adoptive relationships,
     any person sharing the Optionee's household (other than a tenant or
     employee), a trust in which these persons have more than fifty percent of
     the beneficial interest, a foundation in which these persons (or the
     Optionee) control the management of assets, and any other entity in which
     these persons (or the Optionee) owns more than fifty percent of the voting
     interest."

        "1.43 Permitted Transferee shall mean a Family Member who receives an
     Option from an Optionee as a gift not for value or a person or entity to
     whom an Option is transferred by an Optionee in a Permitted Transfer for
     Value."

        "1.44 Permitted Transfer for Value means any transfer for value of an
     Option (a) under a domestic relations order in settlement of marital
     property rights, or (b) to an entity in which more than fifty percent of
     the voting interests are owned by Family Members (or the Optionee) in
     exchange for an interest in that entity."

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     3. Section 11.1 of the Plan is hereby amended and restated in its entirety
to read as follows:

        "11.1 Transfer. Except as otherwise provided by this Section 11.1, or by
     the Committee, an Award shall by its terms be personal and may not be sold,
     pledged, assigned, transferred, encumbered or otherwise alienated or
     hypothecated in any manner other than (a) by will or the laws of descent
     and distribution (b) in the case of a Non-Qualified Stock Option, to a
     Permitted Transferee, or (c) in the case of any awards of Restricted Stock
     or Common Stock Awards that, by their terms, are fully vested. During the
     lifetime of the Holder, only the Holder or a Permitted Transferee may
     exercise an Option (or, if applicable, other Award), or any portion
     thereof, granted to the Holder under the Plan. An Award Agreement may
     permit the exercise and payment of a Holder's Option (or other Award, if
     applicable) after the Holder's death by or to the beneficiary most recently
     named by such Holder in a written designation thereof filed with the
     Company, or, in lieu of any such surviving beneficiary, as designated by
     the Holder by will or by the laws of descent and distribution. In the event
     any Award is exercised by, or to be paid to, the executors, administrators,
     heirs or distributees of the estate of a deceased Holder, or such a
     Holder's beneficiary, or the transferee of an Award, in any such case
     pursuant to the terms and conditions of the Plan and the applicable Award
     Agreement and in accordance with such terms and conditions as may be
     specified from time to time by the Committee, the Company shall be under no
     obligation to issue Common Stock, or make any payment, thereunder unless
     and until the Committee is satisfied that the person or persons exercising
     such Award, or to receive such payment, is the duly appointed legal
     representative of the deceased Holder's estate or the proper legatee or
     distributee thereof or the named beneficiary of such Holder, or the valid
     transferee of such Holder, as applicable.

             (a) An Option transferred to a Permitted Transferee shall not be
     assignable or transferable by the Permitted Transferee to any person or
     entity, other than the original Optionee's Family Members

             (b) Any Option which is transferred to a Permitted Transferee shall
     continue to be subject to all the terms and conditions of the Option as
     applicable to the original Holder.

             (c) The Optionee and the Permitted Transferee shall execute any and
     all documents reasonably requested by the Board, including without
     limitation documents to (i) confirm the status of

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     the transferee as a Permitted Transferee, (ii) satisfy any requirements for
     an exemption for the transfer under applicable federal and state securities
     laws and (iii) evidence the transfer.

             (d) Shares of Common Stock acquired by a Permitted Transferee
     through exercise of an Option may not be transferred, nor will any assignee
     or transferee thereof be recognized as an owner of such shares of Common
     Stock for any purpose, unless a registration statement under the Securities
     Act and any applicable state securities laws with respect to such shares
     shall then be in effect or unless the availability of an exemption from
     registration with respect to any proposed transfer or disposition of such
     shares shall be established to the satisfaction of counsel for the
     Company."

     4. Except as expressly provided in this Amendment, all of the terms,
covenants, conditions, restrictions and other provisions contained in the Plan
shall remain in full force and effect.

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          IN WITNESS WHEREOF, the undersigned, being duly authorized to do so,
has caused this Amendment to be executed as of the date first above written.

                         INFONET SERVICES CORPORATION


                                 /s/ PAUL A. GALLEBERG
                         By:______________________________________________
                         Name:   Paul A. Galleberg
                         Title:  Senior Vice President and General Counsel