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                                                                   EXHIBIT 10.21

              FORM OF EMPLOYMENT AGREEMENT FOR SENIOR EXECUTIVES

          THIS FORM OF EMPLOYMENT AGREEMENT FOR SENIOR EXECUTIVES ("Agreement")
is made and entered into this 1st __day of  July, 1999, (the "Effective Date")
by and between [  ]
          (the "Executive") and International Exchange Networks, Ltd., a
Delaware corporation (the "Company").

                                   BACKGROUND

          WHEREAS the Executive has and is expected to continue to make a major
contribution to the growth, profitability and financial strength of the Company;
and

          WHEREAS the Company desires to retain the services of the Executive,
and the Executive desires to be retained by the Company, on the terms and
conditions set forth below.

          NOW, THEREFORE, intending to be legally bound, and in consideration of
the premises and the mutual promises set forth in this Agreement and for other
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the Company and Executive agree as follows:

                           ARTICLE I -- DEFINITIONS

     1.1  Definitions.  The following terms, when used in this Agreement, shall
     have the following meanings, unless the context clearly requires otherwise
     (such definitions to be equally applicable to both the singular and plural
     of the defined terms):

     1.1.1  "Affiliate" means, (a) with respect to the Executive, any other
             ---------
Person directly or indirectly Controlling, Controlled by, or under common
Control with the Executive and (b) with respect to the Company, (i) any Person
which directly or indirectly beneficially owns (within the meaning of Rule 13d-3
promulgated under the Securities Exchange Act of 1934, as amended) securities or
other equity interests possessing more than 50% of the aggregate voting power in
the election of directors (or similar governing body) represented by all
outstanding securities of the Company or (ii) any Person with respect to which
the Company beneficially owns (within the meaning of Rule 13d promulgated under
the Securities Exchange Act of 1934, as amended) securities or other equity
interests possessing more than 50% of the aggregate voting power in the election
of directors (or similar governing body) represented by, or more than 50% of the
aggregate value of, all outstanding securities or other equity interests of such
Person.

     1.1.2  "Base Salary" shall have the meaning set forth in section 3.1.
             -----------

     1.1.3  "Board" means the Board of Directors of the Company.
             -----
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        1.1.4  "Cause" means an omission, act or action or series of omissions,
                -----
acts or actions of the Executive which, in the determination of the Board,
constitute(s), cause(s) or result(s) in:

               1.1.4.1  the Executive's material dishonesty including, without
               limitation, theft, fraud, embezzlement, financial
               misrepresentation or other similar behavior or action in his
               dealings with or with respect to the Company or any Affiliate
               thereof or entity with which the Company or any Affiliate
               thereof, shall be engaged in or be attempting to engage in
               commerce;

               1.1.4.2  the conviction of the Executive for, or the Executive's
               entry of a plea of guilty or nolo contendere to, the commission
               of a felony;

               1.1.4.3  the willful refusal of the Executive to follow the
               lawful directives of the Board or the President of the Company
               with respect to his duties hereunder, which directives shall be
               consistent with his duties and position as an officer of the
               Company, as set forth in this Agreement, and which refusal is not
               cured by the Executive within thirty (30) calendar days after
               written notice from the Board of the Company to the Executive
               setting forth with reasonable specificity the nature thereof; or

               1.1.4.4  the material breach of any provision of this Agreement
               which is not cured by the Executive within thirty (30) calendar
               days after written notice from the Board or the President of the
               Company to the Executive setting forth with reasonable
               specificity the nature of such breach.

        1.1.5  "Confidential Information" means:
                ------------------------

               1.1.5.1..proprietary information, trade secrets and know-how of
               the Company and its Affiliates;

               1.1.5.2  confidential information relating to the business,
               operations, systems, networks, services, data bases, customer
               lists, pricing policies, business plans, marketing plans, product
               development plans, strategies, inventions and research of the
               Company or its Affiliates; and

               1.1.5.3  confidential information relating to the financial
               affairs and results of operations and forecasts or projections of
               the Company or its Affiliates;

provided that information shall not constitute Confidential Information if such
information: (i) is generally known by Persons other than the Company or its
Affiliates or Persons employed by, in control of or otherwise affiliated with
the Company or its Affiliates, (ii) is known by Persons other than the Company
or its Affiliates or Persons employed by, in control of or otherwise affiliated
with the Company or its Affiliates by reason of the action of such Person or
Persons other than the Executive or any Person acting at the Executive's
direction or with the Executive's consent, (iii) was known by the Executive, by
lawful means, prior to the date of the Executive's
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employment with the Company or (iv) is compelled to be disclosed by law,
regulation or legal process.

     1.1.6  "Control" (including the terms "Controlled by" and "under common
             -------
     Control with") means the possession, directly or indirectly or as a trustee
     or executor, of the power to direct or cause the direction of the
     management of a Person, whether through the ownership of stock, as a
     trustee or executor, by contract or credit agreement or otherwise.

     1.1.7  "Disability" means any physical or mental condition which renders
             ----------
     Executive incapable of performing his essential functions and duties
     hereunder as determined in good faith by the Board.

     1.1.8  "Effective Date" shall have the meaning set forth in the preamble.
             --------------

     1.1.9  "Employment Term" shall have the meaning set forth in section 2.2.
             ---------------

     1.1.10  "Good Reason" means:
              -----------

             1.1.10.1  the assignment to Executive, without Executive's
             expressed written approval, of duties or responsibilities
             materially inconsistent with the Executive's position of       ,
             or any material reduction in Executive's duties, responsibilities
             or authority from those in effect on the date hereof;

             1.1.10.2  the Company's failure to continue in effect any
             material benefit plan, program or policy in which Executive is
             participating (other than any plan, program or policy which is
             available to the salaried employees of the Company generally), or
             the taking of any action by the Company that would adversely
             affect Executive's participation in or materially reduce
             Executive's benefits under any such benefit plan, program or
             policy or that would deprive Executive of any material fringe
             benefit enjoyed by Executive; provided, however, that no Good
             Reason shall occur if the aggregate value of the benefit plans,
             programs and policies in which the Executive is participating
             remains substantially equivalent;

             1.1.10.3  a relocation of the Executive's primary place of
             employment to any location that is both (a) greater than 50 miles
             away from the location at which Executive is currently working,
             and (b) greater than 50 miles away from the Executor's primary
             residence, except for required travel by Executive on the
             Company's business to an extent substantially consistent with
             Executive's past business travel obligations;

which, in any case, is not cured by the Company within thirty (30) calendar days
after written notice from the Executive to the Board setting forth with
reasonable specificity the nature of such breach. For purposes of this
Agreement, any action or inaction shall constitute Good Reason only
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if written notice thereof as contemplated by the preceding sentence is given
within 60 days after the date on which such action or inaction first occurs (or,
if later, the earliest date on which the Executor knows or reasonably should
know of such action or inaction).

               1.1.11  "Initial Term" means the first period that this Agreement
                        ------------
is in effect, as set forth in section 2.2.

               1.1.12  "Person" means an individual, corporation, partnership,
                        ------
association, limited liability company or partnership, trust, government,
governmental agency or body, or any other group or entity, no matter how
organized and whether or not for profit.

               1.1.13  "Renewal Term" shall have the meaning set forth in
                        ------------
Section 2.2.

                       ARTICLE II --  EMPLOYMENT AND TERM

     2.1  Employment. The Company employs Executive and the Executive hereby
agrees to such employment by the Company during the Employment Term to serve as
____ of the Company, with the customary duties, authorities and responsibilities
of a _________ ___ of a telecommunications corporation and such other duties,
authorities and responsibilities relative to the Company or its Affiliates that:
(i) have been agreed upon by the Company and Executive or (ii) may from time to
time be delegated to Executive by the Board [or the President of the Company].

     2.2  Employment Term.

          2.2.1  Initial Term. The "Initial Term" of this Agreement shall
                 ------------
     commence on the Effective Date, and unless sooner terminated as provided in
     Article IV, shall continue until the fourth anniversary of such date.

          2.2.2  Renewal Term. On the day after the Effective Date and on each
                 ------------
     day thereafter, the Employment Term shall be extended by one day, such that
     on any date the Employment Term will expire on the fourth (4th) anniversary
     of such date.  These extensions shall continue in perpetuity until
     discontinued by: (a) notice to the Executive given by the Company that it
     has elected to discontinue the extensions; (b) notice by the Executive to
     the Company that he has elected to discontinue the extensions; or (c)
     termination of the Executive's employment with the Company, whether by
     resignation, discharge or otherwise.  On the date on which such a notice is
     deemed given, or on the effective date of a termination of the Executive's
     employment with the Company, the Employment Term shall be converted to a
     fixed period of four (4) years ending on the fourth (4th) anniversary of
     such date.

          2.2.3.  Employment Term.  For all purposes of this Agreement, the term
                  ---------------
     "Employment Term" shall mean the Initial Term and all Renewal Terms.
     Except as otherwise expressly provided in this Agreement, any reference in
     this Agreement to the term "Remaining Unexpired Employment Term" as of any
     date shall mean the period beginning on such date and ending on the fourth
     (4th) anniversary of  the earliest of (a) the
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     date in question, (b) any earlier date on which the Executive or the
     Company is deemed to have given a notice to discontinue extensions of the
     Employment Term, and (c) any earlier date on which the Executive's
     employment with the Company was terminated.

     2.3  Full Working Time.  During the Employment Term, the Executive shall
devote his ability and attention, all of his skill and experience and efforts
during normal business hours and at such other times as the performance of his
duties hereunder may reasonably require to the proper performance of his duties
hereunder and to the business and affairs of the Company. During the Employment
Term, the Executive, without the prior written approval of the Board, shall not,
either directly or indirectly, actively participate in any other business or
accept any employment or business office whatsoever, including, without
limitation, serving as a director, from any other Person; provided, however,
that the foregoing shall not preclude the Executive, subject to Article V, from:
(i) serving as a director of any non-profit or charitable organization or (ii)
making an investment in any other business, so long as in any such case, the
Executive does not actively participate in such other business or organization
and such activity does not interfere with the Executive's ability to perform his
duties hereunder and does not constitute a conflict of interest with the Company
in the reasonable opinion of the Board.

                    ARTICLE III -- COMPENSATION AND BENEFITS

     3.1  Base Salary. During the Employment Term, as compensation for services
hereunder and in consideration for the protective covenants set forth in Article
V of this Agreement, Executive shall be paid an annual base salary of [$    ] or
such greater amount as may from time to time be approved by the Compensation
Committee of the Board (the "Base Salary"); provided, however, that the Base
Salary may be decreased if there are decreases in salary imposed on all of the
Company's executive employees because the Company's financial performance
dictates such decreases. Base Salary shall be paid to Executive in accordance
with the Company's normal payroll practices.

     3.2  Bonus.  During the Employment Term, Executive shall be eligible to
receive an annual bonus that will be determined in accordance with the bonus
program established by the Board from time to time.

     3.3  Stock Option.  The Executive shall be granted an option to purchase
  shares of the common stock of the Company pursuant to the IXnet, Inc. 1999
  Stock Option Plan (the "Stock Plan").

     3.4  Benefits. To the maximum extent that he is eligible under the terms of
the applicable plan or program, the Executive shall participate in any and all
plans or programs maintained by the Company for its employees and/or senior
executives generally that provide insurance, medical benefits, retirement
benefits, or similar fringe benefits. In addition, the Executive shall be
entitled to [  ] weeks of paid vacation each calendar year of the Employment
Term, which must be taken in accordance with the Company's vacation policy then
in effect.
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     3.5  Indemnification and Insurance.

       3.5.1  D&O Insurance.  The Company shall cause the Executive to be
              -------------
     covered by and named as an insured under any policy or contract of
     insurance obtained by it to insure its directors and officers against
     personal liability for acts or omissions in connection with service as an
     officer or director of the Company or service in other capacities at its
     request.  The coverage provided to the Executive pursuant to this section
     3.5.1 shall be of the same scope and on the same terms and conditions as
     the coverage (if any) provided to other officers or directors of the
     Company and shall continue for so long as the Executive shall be subject to
     personal liability relating to such service.

       3.5.2  Indemnification.  To the maximum extent permitted under applicable
              ---------------
     law, the Company shall indemnify the Executive against and hold him
     harmless from any costs, liabilities, losses and exposures to the fullest
     extent and on the most favorable terms and conditions that similar
     indemnification is offered to any director or officer of the Company or any
     subsidiary or Affiliate thereof and shall continue for so long as the
     Executive shall be subject to personal liability relating to such service.

     3.6  Expenses.  The Company shall pay or reimburse the Executive for
reasonable business expenses actually incurred or paid by the Executive during
the Employment Term, in the performance of his services hereunder; provided,
however, that such expenses are consistent with the Company policy. Such payment
or reimbursement is expressly conditioned upon presentation of expense
statements or vouchers or other supporting documentation by the Executive in a
manner that is acceptable to the Company and otherwise in accordance with the
Company policy then in effect.

     3.7    Deductions.  The Company shall deduct from all compensation or
benefits payable pursuant to this Agreement such payroll, withholding and other
taxes as may in the reasonable opinion of the Company be required by law and any
such additional amounts requested in writing by the Executive.

                            ARTICLE IV - TERMINATION

     4.1  General. The Company shall have the right to terminate the employment
of the Executive at any time with or without Cause.

     4.2  Termination Under Certain Circumstances.

          4.2.1  Termination Without Severance Benefits.  In the event the
                 --------------------------------------
     Executive's employment with the Company is terminated prior to the
     expiration of the Employment Term by reason of (i) the Executive's
     resignation without Good Reason, (ii) the Executive's death or (iii) the
     Executive's discharge by the Company for Cause, this Agreement shall
     terminate including, without limitation, the Company's obligations to
     provide any compensation, benefits or severance to the Executive under
     Article IV of this
<PAGE>

     Agreement or otherwise, other than the Standard Termination Entitlements
     (as defined in section 4.4.1).

          4.2.2  Disability.  The Company may terminate the Executive's
                 ----------
     employment upon the Executive's Disability.  In such event, in addition to
     the Standard Termination Entitlements (as defined in section 4.4.1), the
     Company shall continue to pay the Executive his Base Salary in accordance
     with the Company's normal payroll practices, at the annual rate in effect
     for him immediately prior to the termination of his employment, during a
     period ending on the earliest of: (a) the date on which long-term
     disability insurance benefits are first payable to him under any long-term
     disability insurance plan covering employees of the Company; and (b) the
     date of his death; and (c) the expiration of the Remaining Unexpired
     Employment Term.  A termination of employment due to Disability under this
     Section 4.2.2 shall be effected by notice of termination given to the
     Executive by the Company and shall take effect on the later of the
     effective date of termination specified in such notice or the date on which
     the notice of termination is deemed given to the Executive.

          4.2.3  Termination with Severance Benefits. In the event that the
                 -----------------------------------
     Executive's employment with the Company is terminated by the Executive
     prior to the expiration of the Employment Term for Good Reason or by the
     Company prior to the expiration of the Employment Term other than for Cause
     or Disability, the Company shall pay the Standard Termination Entitlements
     (as defined in section 4.4.1) and the Severance Benefits (as defined in
     section 4.4.2); provided, however, that any payment required by this
     section 4.2.2 is expressly conditioned upon:

                 4.2.3.1  The Executive's compliance with the terms of this
                 Agreement, including, without limitation, Article V;

                 4.2.3.2 The Executive's execution of a release and waiver of
                 all claims and potential claims against the Company, its
                 Affiliates and other related parties in a form satisfactory to
                 the Company and that is substantially similar to the attached
                 form; and

                 4.2.3.3  The Executive's resignation from any and all positions
                 which he holds as an officer, director or committee member with
                 respect to the Company or any Affiliate thereof.

     4.3  Liquidated Damages. The Company and Executive hereby stipulate that
the damages which may be incurred by the Executive as a consequence of any such
termination of employment are not capable of accurate measurement as of the date
first above written and that the liquidated damages payments provided for in
this Agreement constitute a reasonable estimate under the circumstances of, and
are in full satisfaction of, all damages sustained as a consequence of any such
termination of employment.
<PAGE>

     4.4  Standard Termination Entitlements; Severance Benefits.

          4.4.1  Standard Termination Entitlements.  For all purposes of this
                 ---------------------------------
     Agreement, the Executive's "Standard Termination Entitlements" shall mean
     and include:

               (a) the Executive's earned but unpaid compensation (including,
          without limitation, salary and all other items which constitute wages
          under applicable law) as of the date of his termination of employment.
          This payment shall be made at the time and in the manner prescribed by
          law applicable to the payment of wages but in no event later than 30
          days after the date of the Executive's termination of employment.

               (b) the benefits, if any, due to the Executive, and the
          Executive's estate, surviving dependents or his designated
          beneficiaries under the employee benefit plans and programs and
          compensation plans and programs (including stock option plans)
          maintained for the benefit of the officers and employees of the
          Company). The time and manner of payment or other delivery of these
          benefits and the recipients of such benefits shall be determined
          according to the terms and conditions of the applicable plans and
          programs.

          4.4.2  Severance Benefits.  For all purposes of this Agreement, the
                 ------------------
     Executive's "Severance Benefits" shall mean and include:

               (a) the payment of (i) the Executive's Base Salary at the annual
          rate of Base Salary in effect immediately prior to his termination of
          employment (without giving effect to any reduction in Base Salary not
          expressly authorized by this Agreement) for a period of twelve (12)
          months from the date of the Executive's termination of employment
          payable in accordance with the Company's normal payroll practices,
          plus (ii) the annual bonus (if any) earned by the Executive for the
          fiscal year (computed as though the Executive had remained employed
          through the end of such fiscal year) multiplied by a fraction, the
          number of which is the number of calendar months in the current fiscal
          year to begin before the Executive's termination of employment and the
          denominator of which is twelve (12), payable at the time and in the
          manner specified in the applicable bonus plan. The payments described
          in this section 4.4.2 (a) shall not commence until the release
          referred to in section 4.3.2.2. becomes irrevocable.

               (b) a lump sum payment equal to any unpaid bonuses or other
          compensation earned for periods completed prior to the
<PAGE>

          Executive's termination of employment, the payment of which is
          contingent on the Executive's continued employment through a date that
          is after the date of his termination of employment. This payment shall
          be made at the time and in the manner prescribed by law, but in any
          event within five (5) business days after the Executive's termination
          of employment.

                (c) for a period of one year after termination of employment,
          direct payment by the Company to the carrier of the premiums due for
          any health insurance continuation coverage elected by the Executive
          under the Company group health plans pursuant to the Consolidated
          Budget Reconciliation of 1985.


                       ARTICLE V -- RESTRICTIVE COVENANTS

     5.1  Proprietary Information.

          5.1.1  Disclosure during the Term. The Executive shall promptly
                 --------------------------
     disclose to the Company in such form and manner as the Company may
     reasonably require (a) all operations, systems, services, methods,
     developments, inventions, improvements and other information or data
     pertaining to the business or activities of the Company and its Affiliates
     as are conceived, originated, discovered or developed by Executive (whether
     or not copyrighted or patented or capable of being copyrighted or patented)
     during the Employment Term (whether before or after the date hereof), and
     (b) such information and data pertaining to the business, operations,
     personnel, activities, financial affairs, and other information relating to
     the Company and its Affiliates and their respective customers, suppliers,
     employees and other persons having business dealings with the Company and
     its Affiliates as may be reasonably required for the Company to operate its
     business. It is understood that such information is proprietary in nature
     and shall (as between the Company and Executive) be for the exclusive use
     and benefit of the Company and shall be and remain the property of the
     Company both during the Employment Term and thereafter. If so requested by
     the Company, the Executive shall execute and deliver to the Company any
     instrument as the Company may reasonably request to effectuate the
     assignment of any such proprietary information to the Company.  Without
     limiting the generality of the foregoing, the Executive hereby releases and
     waives and assigns to the Company any and all claims and rights which he
     has against the Company or any Affiliate thereof or any of the technology,
     "know-how," licenses or other proprietary rights or processes of the
     Company or any Affiliate thereof.

          5.1.2  Disclosure after the Term. In the event that the Executive
                 -------------------------
     leaves the employ of the Company for any reason, including, without
     limitation, the expiration of the Employment Term, the Executive shall
     deliver to the Company (and shall not keep in his possession, recreate or
     deliver to anyone other than the Company or its designee) any and all
     devices, records, data, notes, reports, proposals, lists, correspondence,
     specifications, drawings, blueprints, sketches, materials, equipment, other
     documents or property,
<PAGE>

    together with all copies thereof (in whatever medium recorded) belonging to
    the Company or any Affiliate thereof or any of their respective successors
    or assigns.

    5.2  Non-Competition. During the Employment Term and any extensions thereof,
and, only if the Executive's employment hereunder is terminated due to the
Company's discharge of the Executive for Cause, or the Executive's voluntary
resignation from his employment hereunder without Good Reason, for two years
thereafter, the Executive agrees, and shall cause each Person Controlled by him
to agree, that any such Person shall not, directly or indirectly, through any
Person Controlled by the Executive, in any form or manner on a worldwide basis:
(a) engage in any activities competitive with the business of the Company and
its Affiliates for his or their own account or for the account of any other
Person, or (b) become interested in any Person engaged in activities competitive
with the business of the Company and its Affiliates as a partner, shareholder,
member, principal, agent, employee, trustee, consultant or in any other
relationship or capacity; provided, however, that Executive may own, directly or
indirectly, solely as a passive investment, securities of any Person if the
Executive (x) is not a Person in Control of, or a member of a group that
Controls, such Person and (y) does not, directly or indirectly, own 5% or more
of any voting class of securities of such Person.

    5.3  Non-Solicitation. During the Employment Term, any extensions thereof
and for a period of two years thereafter, the Executive will not, directly or
indirectly, use proprietary knowledge or information relating to the Company or
its Affiliates obtained during the course of Executive's employment with the
Company with the intention to, or which a reasonable person would construe to
(a) interfere with or disrupt any present or prospective relationship,
contractual or otherwise, between the Company or its Affiliates and any
customer, supplier, employee, consultant or other person having business
dealings with the Company or its Affiliates, or (b) employ or solicit the
employment or engagement by others of any employee or consultant of the Company
or its Affiliates who was such an employee or consultant at the time of
termination of the Executive's employment hereunder or within one year prior
thereto.

    5.4  Non-Disclosure. Except with the prior written consent of the Company in
each instance or as may be reasonably necessary to perform the Executive's
services hereunder, the Executive shall not disclose, use, publish, or in any
other manner reveal, directly or indirectly, at any time during or after the
Employment Term, any Confidential Information relating to the Company or any
Affiliate thereof acquired by him prior to, during the course of, or incident
to, his employment hereunder. In the event Executive is required (by oral
questions, interrogatories, requests for information or documents in legal
proceedings, subpoenas, civil investigative demand or similar process) to
disclose any such Confidential Information, the Executive shall provide the
Company with prompt written notice of such requirement so that the Company may
seek a protective order or other appropriate remedy and/or waive compliance with
the provisions of this Section. If, in the absence of such a protective order or
other remedy or receipt of a waiver by the Company, the Executive is nonetheless
advised by his legal counsel that he is legally compelled to disclose such
Confidential Information, the Executive may, without liability hereunder,
disclose only that portion of such Confidential Information which such counsel
advises in writing is legally required to be disclosed.
<PAGE>

     5.5  Reasonable Limitations. Executive acknowledges that given the nature
of the Company's business the covenants contained in this Article V contain
reasonable limitations as to time, geographical area and scope of activity to be
restrained, and do not impose a greater restraint than is necessary to protect
and preserve the Company's business and to protect the Company's legitimate
business interests. If, however, this Article V is determined by any court of
competent jurisdiction or any arbitrator to be unenforceable by reason of its
extending for too long a period of time or over too large a geographic area or
by reason of its being too extensive in any other respect, or for any other
reason, it will be interpreted to extend only over the longest period of time
for which it may be enforceable and/or over the largest geographical area as to
which it may be enforceable and/or to the maximum extent in all other aspects as
to which it may be enforceable, all as determined by such court or arbitrator in
such action.

     5.6  Remedies for Breach. Executive acknowledges that the legal remedies
for breach of the protective covenants hereunder are inadequate and therefore
agrees that, in addition to all of the remedies available to the Company in the
event of a breach or a threatened breach of any covenant contained in this
Article V, the Company may: (i) obtain temporary, preliminary, and permanent
injunctions and any other appropriate equitable relief against any and all such
actions, (ii) cease as of the date of such breach or threatened breach any and
all further payments to Executive pursuant to this Agreement and (iii) recover
from Executive monetary damages to the Company or any Affiliate arising from
such breach or threatened breach and all costs and expenses (including
reasonable attorneys' fees) incurred by the Company or any Affiliate in the
enforcement of such protective covenants.

     5.7  Extension of Limitation Period. The parties acknowledge that if
Executive violates any of the protective covenants in this Article V and the
Company brings legal action for injunctive, damages or other relief hereunder,
the Company shall, as a result of the time involved in obtaining the relief, be
deprived of the full benefit of these protective covenants. Accordingly, the
applicable limitation period shall be deemed to have the full duration of the
period stated therein, computed from the date relief is granted, but reduced by
the time between the period when the restriction began to run and the date of
the first violation of the covenant by Executive.

     5.8  Affiliates of the Company. The provisions of this Article V shall
benefit the business and proprietary rights of the Company's Affiliates and
shall be enforceable against Executive by each of such Affiliates as third party
beneficiaries.

     5.9  Survival of Protective Covenants. Each covenant on the part of
Executive contained in this Article V shall be construed as an agreement
independent of any other provision of this Agreement, unless otherwise indicated
herein, and shall survive the termination of Executive's Employment under this
Agreement, and the existence of any claim or cause of action of Executive
against the Company, whether predicated on this Agreement or otherwise, shall
not constitute a defense to the enforcement by the Company of such covenant.

                        ARTICLE VI -- DISPUTE RESOLUTION

     6.1  Arbitration. Any dispute, controversy or claim, at any time arising
from or relating to this Agreement, or the breach, termination or invalidity
thereof (other than any
<PAGE>

dispute, controversy or claim made by the Company pursuant to Article V, which
may, at the option of the Company, be submitted to any court of competent
jurisdiction) shall be referred to final and binding arbitration by a panel of
three arbitrators selected according to the National Rules for the Resolution of
Employment Disputes of the American Arbitration Association (but not held under
its auspices). In the event the arbitrator selected by the Executive and the
arbitrator selected by the Company cannot, within thirty (30) days after the
appointment of both, agree on a third arbitrator, he or she shall be selected by
a United States District Court Judge sitting in the United States District Court
for the Southern District of New York. The place of arbitration shall be New
York, NY. Any arbitral award may be entered as a judgment in any court of
competent jurisdiction.

                       ARTICLE VII -- GENERAL PROVISIONS

     7.1  Notices. All notices, requests, claims, demands and other
communications hereunder shall be in writing and shall be given (and shall be
deemed to have been duly received if so given) by hand delivery, telegram, telex
or telecopy, or by mail (registered or certified mail, postage prepaid, return
receipt requested) or by any courier service, providing proof of delivery. All
communications hereunder shall be delivered to the respective parties at the
following addresses:

If to the Executive:  [                 ]

                      [address]

with copy to:         [                 ]

If to the Company:    IPC Information Systems, Inc.
                         Wall Street Plaza
                         88 Pine Street - 15th Floor
                         New York, NY 10005
                         Attn:  Chairman of the Board
                         Fax No.: (212) 858-7959

with copy to:         [                 ]

or to such other address as the party to whom notice is given may have
previously furnished to the other parties hereto in writing in the manner set
forth above.

     7.2  Entire Agreement. This Agreement shall constitute the entire agreement
between the Executive and the Company with respect to the Company's employment
of the Executive and supersedes any and all prior agreements and understandings,
written or oral, with respect thereto.
<PAGE>

     7.3  Amendments and Waivers. Any term of this Agreement may be amended and
the observance of any term of this Agreement may be waived (either generally or
in a particular instance and either retroactively or prospectively), only by (a)
an instrument in writing and signed by the party against whom such amendment or
waiver is sought to be enforced, and (b) in the case of the Company, such
amendment or waiver also must be duly authorized by an appropriate resolution of
the Board.

     7.4  Successors and Assigns. The Company shall have the right to assign
this Agreement. The personal services of the Executive are the subject of this
Agreement and no part of his rights or obligations hereunder may be assigned,
transferred, pledged or encumbered by the Executive. This Agreement shall inure
to the benefit of, and be binding upon (a) the parties hereto, (b) the heirs,
administrators, executors and personal representatives of the Executive and (c)
the successors and assigns of the Company as provided herein.

     7.5  Governing Law. This Agreement, including the validity hereof and the
rights and obligations of the parties hereunder, and all amendments and
supplements hereof and all waivers and consents hereunder, shall be construed in
accordance with and governed by the laws of the State of New York without giving
effect to any conflicts of law provisions or rule, that would cause the
application of the laws of any other jurisdiction.

     7.6  Severability. If any provisions of this Agreement as applied to any
part or to any circumstance shall be adjudged by a court to be invalid or
unenforceable, the same shall in no way affect any other provision of this
Agreement, the application of such provision in any other circumstances or the
validity or enforceability of this Agreement.

     7.7  No Conflicts. The Executive represents to the Company that the
execution, delivery and performance by the Executive of this Agreement does not
and will not conflict with or result in a violation or breach of, or constitute
(with or without notice or lapse of time or both) a default under any contract,
agreement or understanding, whether oral or written, to which the Executive is
or was a party or of which the Executive is or should be aware.

     7.8  Survival. The rights and obligations of the Company and Executive
pursuant to Articles IV, V and VI shall survive the termination of the
Executive's employment with the Company and the expiration of the Employment
Term.

     7.9  Captions. The headings and captions used in this Agreement are used
for convenience only and are not to be considered in construing or interpreting
this Agreement.

     7.10  Counterparts. This Agreement may be executed in two or more
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

     7.11  Non-duplication.  In the event that the Executive shall perform
services for any Affiliate of the Company or any other direct or indirect
subsidiary or affiliate of the Company or any Affiliate, any compensation or
benefits provided to the Executive by such other employer shall be applied to
offset the obligations of the Company hereunder, it being intended that this
<PAGE>

Agreement set forth the aggregate compensation and benefits payable to the
Executive for all services to the Company, its Affiliates and all of their
respective direct or indirect subsidiaries and affiliates.

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

                                                       [EXECUTIVE]







                                                       IXnet, Inc.


                                                       By:

                                                       Name:

                                                       Title: