Document:

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Exhibit 10.8

[LOGO]

AGCN(TM)
MEMBER
AGREEMENT

                              Spot Market - Minutes

1. Introduction.

      The AGCN is a clearinghouse for the sale and purchase of telecommunication
            services by and between telecommunication carriers, internet
            telephony service providers, prepaid card service providers, and
            others. The AGCN is operated by Arbinet Communications, Inc.
            (Arbinet(TM)) It is understood and agreed by entities who use the
            AGCN to obtain telecommunications service that Arbinet's operation
            of the AGCN does not constitute the provision by Arbinet of
            telecommunications of common carrier services. Compliance with all
            applicable legal and regulatory requirements governing the provision
            of telecommunication services bought or sold through the AGCN is the
            responsibility of those telecommunication carriers whose services
            are made available through the AGCN.

      This Agreement contains important information regarding the terms and
            conditions which apply to your membership with the Arbinet Global
            Clearing Network(TM) (AGCN(TM)). PLEASE READ THIS AGREEMENT
            CAREFULLY and retain it for future reference. Please note that the
            information contained herein is subject to change without notice.

      In consideration for Arbinet approving your Membership Application and
            allowing you access to the AGCN, you agree to the terms and
            conditions contained in this Agreement, as amended from time to
            time.

      Arbinet may amend this Agreement at any time by posting the amended terms
            at www.agcn.net. The amended terms shall automatically be effective
            ____ days after they are initially posted on our site. This
            Agreement may not be otherwise amended except in a writing signed by
            both parties. Member agrees that notification of changes to these
            Terms and Conditions by virtue of posting on the Arbinet or AGCN
            website constitute reasonable notice. This Agreement was last
            revised on June 28, 1999.

      Members may only begin trading through the AGCN after they have agreed in
            writing to accept the terms and conditions of this Agreement. Such
            acceptance must be received by a certified representative of Arbinet
            prior to the commencement of any authorized AGCN trading activities.

2. Definitions.

      The following terms as used in this Agreement have the meanings given to
            such terms in this Section 2.

      AGCN Node means Any Arbinet owned or operated interconnect facility that
            provides a

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            Member with the ability to route call traffic through or in
            conjunction with the AGCN.

      Answer Seizure Ratio or ASR means on a route or destination code basis,
            and during a specified time interval, the ratio of the number of
            seizures that result in an answer signal, to the total number of
            seizures. (As defined by the International Telecommunications Union,
            ITU-T Terms and Definitions of Traffic Engineering 3/93).

      An Associate Member is defined as any person or entity that has been
            approved by Arbinet to view-only the Buy and Sell Orders through the
            AGCN.

      Buying Members means any Member which offers to buy or buys any
            telecommunications services through the AGCN.

      E1 Facility means European digital signal level; 2.048 Mbits/s.

      A Member is defined as any person or entity that has registered to buy
            and/or sell telecommunication services through the AGCN and has been
            approved by Arbinet as a trader of telecommunication services
            through the AGCN, and whose network is capable of routing a call
            through or in conjunction with an AGCN Node.

      Post Dialing Delay or PDD means time interval between the end of dialing
            by the user and the reception by him of the appropriate tone or
            recorded announcement, or the abandonment of the call without tone.
            (As defined by the International Telecommunications Union, ITU-T
            Terms and Definitions of Traffic Engineering 3/93).

      Selling Members means any Member which offers for sale or sells any
            telecommunications services through the AGCN.

      T1 Facility means transmission at DS-1, 1.544 Mbits/s.

      Voice Quality of Service or VQOS means Arbinet's three state (A, B, C)
            scale of rating the average overall voice quality of a seized call
            during a specified time interval.

3. Eligibility for Membership

      Our services are available only to entities that can form legally binding
            contracts under applicable law. If you do not qualify, please do not
            use our services. Arbinet may refuse its services or membership to
            the AGCN to anyone at any time, in its sole discretion.

4. Arbinet is Only a Venue.

      The AGCN acts as the venue for sellers and for buyers to sell and buy
            telecommunication services. We are not involved in the actual
            transaction between buyers and sellers. As a result, we have no
            control over the quality, safety or legality of the items
            advertised, the truth or accuracy of any information provided, the
            ability of sellers to sell items or the ability of buyers to buy
            items. We cannot and do not control whether or not sellers will
            complete the sale of items they offer or buyers will complete the
            purchase of items they

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            have agreed to purchase. In the event that you have a dispute with
            one or more Members, you release Arbinet (and our agents and
            employees) from claims, demands and damages (actual and
            consequential) of every kind and nature, known and unknown,
            suspected and unsuspected, disclosed and undisclosed, arising out of
            or in any way connected with any such dispute.

5. No Advice.

      Members acknowledge that Arbinet will not provide Members with any legal,
            tax or accounting advice or advice regarding the appropriateness,
            suitability or profitability of any transaction which Members
            undertake on or through the AGCN. Members also acknowledge that
            Arbinet's employees are not authorized to give any such advice and
            that Members will not solicit or rely upon any such advice from
            Arbinet or any of its employees. Arbinet and its officers,
            directors, employees, agents and affiliates will have no liability
            with respect to any transaction which Members undertake on or
            through the AGCN.

      Arbinet or its agent(s) will evaluate each membership application and
            Agreement individually. Arbinet reserves the right to impose such
            financial risk reduction management conditions on Members as
            detailed in the AGCN Risk Management Policy (attached hereto as
            Addendum "A" and as amended from time to time), including, but not
            limited to, requiring security deposits, advance payments and
            letters of credit, as Arbinet deems necessary and appropriate.
            Arbinet reserves the right to reject any membership application.

      The AGCN Risk Management Policy may be posted at website address
            www.agcn.net. Changes to such policy will be reflected in the posted
            policy seven days before such changes take effect. Purchaser agrees
            that notification of Risk Management Policy changes by posting a
            revised policy on the AGCN website shall constitute reasonable
            notice of such changes and agrees to comply with such policy as
            amended from time to time.

6. Member Responsibilities.

      A. General

      Member shall perform its obligations under this Agreement and use the AGCN
            in a manner consistent with applicable law, and shall not use the
            AGCN, or permit the AGCN to be used, for any illegal purpose or in
            any other unlawful manner. Any Member's transmission of any and all
            material (including, but not limited to, copyrighted material or
            material protected by trade secrets) in violation of any federal,
            state or local law, order or regulation is prohibited.

      Member is responsible for provision of, and expenses associated with,
            installation of all interconnection facilities and maintenance of
            such facilities, and other actions necessary for it to use the AGCN.

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      Each Member acknowledges that it is solely responsible for the security
            and confidentiality of any information transmitted through the AGCN
            and that neither Arbinet nor any other Member will make any effort
            to confirm the security or confidentiality of such Member's
            information.

      Arbinet will not be responsible for any losses or damages resulting from
            delay's non-deliveries, misdeliveries, or service interruption.

      Any Member offering to buy or sell services through the AGCN website
            represents that it possesses all requisite legal and regulatory
            authority to buy or sell such services at the rate and route
            characteristics specified by it. Offers to sell services by Members
            constitute a guarantee that the Member will meet all service
            characteristics, including but not limited to, quality
            characteristics, posted on the AGCN.

      B. Selling Members

      A Selling Member shall use its best efforts to verify that all services
            provided through the AGCN meet or exceed all AGCN [and self defined
            quantitive and qualitative] service standards and route
            characteristics posted for and by Selling Members or Arbinet on the
            AGCN.

      A Selling Member must use its best efforts to quantify maximum available
            minute capacity for each route employing an estimated formula of
            250,000 minutes per month per T1 Facility and 300,000 minutes per
            month per E1 Facility. It is the sole responsibility of the Selling
            Member to maintain accurate capacity information on each individual
            route offered by such Member through the AGCN.

      A Selling Member must use its best efforts to quantify average Post Dial
            Delay. The time period over which average PDD shall be calculated
            daily using a twenty-four (24) hour period commencing at 12:00 am
            (GMT) and concluding at 11:59 pm [(GMT). Further, all Selling
            Members must make best effort to quantify average Answer Seizure
            Ratio. The time period over which average PDD shall be calculated
            daily using a twenty-four (24) hour period commencing at 12:00 am
            (GMT) and concluding at 11:59 pm (GMT).

      A Selling Member must use its best efforts to qualify average Voice
            Quality of Service. The time period over which average PDD shall be
            calculated daily using a twenty-four hour period commencing at 12:00
            am (GMT) and concluding at 11:59 pm. The system and rating formula
            to be employed is as follows:

                    VQOS Rating     Route Characteristics
                    -----------     ---------------------

                         A          Little or no background noise, no echo, no
                                    delay.

                         B          25% or more of calls contain one of the
                                    following--background noise, echo, delay.

                         C          50% or more of the calls contain one of the

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                                    following--background noise, echo, delay.

      C. Buying Members. [Note to Arbinet: Please advise whether Buying Members
         should be required to make any undertakings]

7. Member Acknowledgments

      Each Member hereby acknowledges and agrees as follows:

            Arbinet assumes no liability for any delays or errors in trade
                  execution or for misrouting of any telecommunications services
                  bought or sold by any Member through the AGCN, irrespective of
                  cause. Members agree to hold Arbinet harmless from liability
                  for any errors or delays in trade execution, including errors
                  as to prices quoted by other Members.

            Sell prices posted on the AGCN represent the rates for Member calls
                  transiting through AGCN Nodes and are based on Member orders.
                  Members understand that other Members may make available
                  limited capacity at specified prices, and that a price
                  displayed on the AGCN may not be available for all calls of
                  similar characteristics at all times.

            [Arbinet may test route characteristics both routinely and as a
                  result of Member complaints. Where incongruities are
                  identified between posted route characteristics and the
                  Member's provided route, Arbinet will perform appropriate
                  tests and render a final decision on what mitigation, if any,
                  is required. Any fees associated with such testing will be
                  levied against applicable Members in accordance with AGCN Fee
                  Schedule (set forth in Appendix One attached hereto).]1/

            Arbinet may, in its sole discretion, modify the stated quality
                  characteristics of any AGCN sell order posted by any Member on
                  the AGCN. Arbinet also may, in its sole discretion, modify any
                  AGCN nodal routing plans so as to ensure that the routing
                  following the quality specified in Member buy orders as
                  modified by Arbinet.

            Arbinet may, in its sole discretion, suspend or terminate any
                  Member's right to buy or sell services through the AGCN,
                  including removal of and declination to list any offer of any
                  Member to buy or sell services; revoke any Member's
                  participation in the AGCN at any time; and/or arrange for
                  disconnection of any Member's facilities interconnected with
                  any AGCN Node, without prior notice. All expenses incurred by
                  any Member as a result of such disconnection shall be
                  responsibility of such Member. Arbinet shall use reasonable
                  efforts to provide a Member whose facilities are to be
                  disconnected with advance notice of disconnection.

--------
 1/  Please advise whether this is a appropriate.

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      Arbinet will undertake reasonable efforts to protect the identity of
            Members. Arbinet may, in its discretion, share information with
            other entities as necessary in monitoring the conduct of Members
            with regard to their participation in the AGCN.

8. Payment/Settlement

      Members agree to pay the applicable AGCN fees as specified in the AGCN Fee
            Schedule attached hereto as Appendix One as amended from time to
            time. All Fees will be deducted from payments distributed by Arbinet
            to Selling Members, and added to the invoices presented by Arbinet
            to Buying Members. Arbinet reserves the right to modify, impose new,
            or remove fees from the AGCN Fee Schedule upon five (5) business
            days notice to Members. The AGCN Fee Schedule changes will be posted
            at website address www.agcn.net five (5) business days prior to
            taking effect. Purchaser agrees that notification of fee schedule
            changes by posting such notice on the AGCN website shall constitute
            reasonable notice.

      All traffic purchased or sold through the AGCN will be rated based on call
            durations measured by a 30-second minimum period followed by six (6)
            second billing increments. In certain circumstances, as posted in
            Member buy and sell orders, call durations may be measured by a
            one-minute minimum period followed by one-minute increments.
            Arbinet, at its discretion, may, from time to time, introduce
            additional call duration measurement intervals.

      All calculations and ratings of calls will be performed to the one hundred
            thousandth (xx.xxxxx) of a cent. Final settlements will be rounded
            up to the nearest one hundredth of a cent (xx.xx).

      Payment between Arbinet and Members will be settled twice monthly, the
            fifteenth and the last day of each month (each a Settlement Date).
            Arbinet will present settlement statements to Members within five
            (5) business days of the end of each Settlement Date. Payments to
            and from Arbinet will be due within five (5) business days of the
            applicable settlement statement (each a Payment Date). All amounts
            owed to Arbinet by Members that remain unpaid on the applicable
            Payment Date will bear interest at a rate equal to 18% per annum or
            the highest amount allowable by applicable law. Members disputing
            settlement charges must provide Arbinet with notice of the dispute
            and accompanying documentation to support each claim within five (5)
            business days of the applicable Payment Date. Notification of such
            disputes does not relieve Members from their obligation to remit
            settlement payments in full as designated by the applicable
            Settlement Statement on or prior to the applicable Payment Date.
            Arbinet will work with Members in good faith to investigate and
            resolve all such settlement disputes for which it receives timely
            notification. Set-offs amounts, if any, will be applied to the
            Member's succeeding monthly statement. Arbinet reserves the right to
            reconcile Settlement Statements at any time for a period of six (6)
            months after the original Settlement Statement has been issued.

      Settlement Statements will be provided to Members either by next-day mail
            and/or, the billing e-mail addresses provided to Arbinet at the time
            of registration of such Member.

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      Unless otherwise stated, all fees are quoted in U.S. Dollars. Members are
            responsible for paying all applicable taxes and for other costs
            Members incur to bid, buy, sell or access Arbinet servers or the
            AGCN. All settlement payments between Members and Arbinet shall be
            made via US Funds in the form of corporate check, wire transfer, or
            electronic funds transfer. Members requiring the use of certified
            checks shall be charged for the additional expense incurred by
            Arbinet in processing such checks.

9. Miscellaneous

      Should discrepancies exist as a result of multiple contracts between
            Arbinet and Member, the current as defined by the terms herein and
            as posted at website address www.agcn.net from time to time shall
            govern, supercede and be employed as the sole determinant for all
            resolution.

      Nothing in this Agreement is intended to create any agency, partnership,
            or joint venture arrangement between AGCN and any Member, nor are
            there to be any third party beneficiaries under this Agreement.

      Arbinet makes NO EXPRESS WARRANTIES AND DISCLAIMS ALL IMPLIED WARRANTIES,
            INCLUDING WARRANTIES OF MERCHANTABILITY AND OF FITNESS, with regard
            to the quality, capacity, availability, reliability, or other
            characteristics of any service offered by any Member over the AGCN.
            Upon being notified by Members of complaints regarding any service
            obtained through the AGCN, Arbinet may investigate and modify
            information posted on the AGCN where appropriate.

      Members agree to indemnify and hold Arbinet harmless for any and all
            errors in information, including pricing information, provided
            through the AGCN, including information posted on the AGCN website.
            Members further agree to indemnify and hold Arbinet harmless from
            and against any and all claims against Arbinet made by any person
            arising out of or related to any offer or transaction resulting from
            any transaction made by any Member through the AGCN. The scope of
            this indemnification shall include, but shall not be limited to,
            reasonable attorneys' fees and other costs incurred by Arbinet in
            the defense or resolution (including settlement) of any claim.

      Arbinet's obligations under this Agreement are subject to, and it shall
            not be responsible for, any delays, failure to perform, or operation
            of the AGCN where such delays or failure are the result of fire,
            flood, water, the elements, labor disputes or shortages, utility
            cutailments, power failures, explosions, civil disturbances, war,
            acts of God, governmental actions, including changes in regulations,
            tariffs, or rates which make it impossible or impractical for
            Members to provide the telecommunications services as represented on
            the AGCN.

      This Agreement is to be enforced under the laws of the State of New York
            without regard to conflict of law principles. Members hereby consent
            to the exclusive jurisdiction of federal or sate courts located in
            the County of New York, with respect to all actions regarding this
            Agreement or the AGCN.

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      Members shall not transfer or assign this Agreement or their participation
            in the AGCN to others except upon the written approval of an
            authorized representative of Arbinet. In the event of such an
            assignment or transfer, any such assignee shall be subject to and
            shall execute this Agreement.

      All rights to AGCN intellectual property, including copyrights, patents,
            software, trademarks, and service marks, as well as websites, and
            communications nodes, shall remain the sole property of Arbinet.

      Members understand that certain features demonstrated in the tutorial
            segment of the AGCN may not be available during live trading on the
            AGCN, and vice versa, and that prices posted in the tutorial segment
            are for demonstration purposes only.

      This Agreement is made expressly subject to all present and future valid
            orders and regulations of any regulatory body having jurisdiction
            over the subject matter hereof and to the laws of the United States
            of America, any of its states, or any foreign governmental agency
            having jurisdiction. In the event this Agreement, or any of its
            provisions, shall be found contrary to or in conflict with any such
            order, rule, regulation or law, this Agreement shall be deemed
            modified to the extent necessary to comply with any such order,
            rule, regulation or law and shall be modified in such a way as is
            consistent with the form, intent and purpose of this Agreement.

      This Agreement, constitute the entire agreement between Arbinet and
            Members. Arbinet may modify this agreement at any time upon
            reasonable notice to Members. The Applicant agrees that posting of
            such modifications on the AGCN website constitutes reasonable
            notice. Upon such posting, this Agreement or any of its parts may be
            modified immediately. New or modified paragraphs shall apply to any
            and all transactions executed through the AGCN after the effect date
            of such new or modified terms and conditions.

      Member represents and warrants that: (a) the signatory shown below has the
            authority to bind the party on whose behalf he/she is signing to the
            terms of this Agreement; (ii) the execution and delivery of this
            Agreement and the performance of such party's obligations hereunder
            have been duly authorized; and (iii) the Agreement is a valid and
            legal agreement binding on such parties and enforceable in
            accordance with its terms.

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      All notices, demands, requests and other communications required or
            permitted hereunder shall be in writing and shall be deemed to be
            delivered when actually received, when sent by certified mail,
            return receipt requested, reputable overnight carrier, facsimile, to
            the address set forth below:

Acknowledged and agreed to as of this _____ day of ___________________.

                                       Member:

                                       By:_____________________________

                                       Printed Name:___________________

                                       Title:__________________________
                                       Address:

                                       Telephone:
                                       Fax:

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                                  APPENDIX ONE

                           AGCN RISK MANAGEMENT POLICY

The following states Arbinet's Risk Management Policy with respect to AGCN
members. By subscribing as an AGCN Member, you indicate your agreement to the
terms and conditions set forth below.

Candidates for AGCN membership must submit to Arbinet Communications, Inc.
      ("Company") a completed credit application form, a sales and use tax
      exemption certificate, and a copy of FCC 214 license if applicable.
      Additionally, the Company's Controller may require a Candidate or a Member
      to submit audited financial statements.

The AGCN operates two billing cycles, the first to the fifteenth (15th) of each
      month and the sixteenth (16th) to last day of each month.

Security deposits must be in the form of (a) cash (held in a cash deposit
      non-interest bearing escrow account), or (b) an irrevocable Letter of
      Credit (confirmed and payable in USD at the counter of the Company's bank;
      details provided on request). The security deposit must be not less than
      200% of the estimated billing-cycle amount. The Company may require the
      amount to be adjusted to reflect the actual billed amounts of the Member's
      trading and transaction activities. Each Member will be able to buy and
      transact up to an amount not exceeding 70% of their security deposit. An
      increase to the security deposit will be required whenever the open
      account balance reaches a threshold of 70% of the security deposit amount.
      The Company must receive, within 24 hours of the time the threshold is
      passed (a) a paydown of the balance owed, and/or (b) an appropriate
      increase in the amount of the security deposit. If neither is received,
      the Company will restrict the Member's buying activities and associated
      AGCN node transactions until the security deposit is replenished to 200%
      of the then-estimated billing-cycle amount.

The Company will bill back to Members for any bank fees charged in the
      collection of the receivable or any deductions taken by the Member that
      was not approved in writing by the Company.

Collection of Past Due Accounts:

      Standard Terms: (a) Net 5 days from invoice date. (b) Interest charges
            will begin on the 8th day from invoice date at 18% annually
            (1.5%/month).

      It is the responsibility of the Member to notify in writing the Company's
            collection department the details of any disputed items before the
            8th day from the date of invoice so interest is not charged on the
            amount in dispute. Disputes should be resolved or paid within 15
            days from date of invoice unless special consideration warrants
            additional time.

      Outstanding balances that are not cleared within 15 days will
            automatically be presented to the Member's bank to draw down on the
            security deposit, with concomitant effect on the Member's trading
            floor buying and nodal transaction activities.

      If reasonable collection efforts are unsuccessful in obtaining payments
            for past due invoices the account, all of the delinquent Member's
            buying activities will be placed on hold, and associated nodal
            transactions will be terminated. The Company reserves the right to
            refer delinquent accounts to an external collection agency.

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                                  APPENDIX ONE

                            AGCN MEMBER FEE SCHEDULE

The following schedule defines fees assessed to Members of the AGCN upon their
enrollment and participation with the Arbinet Global Clearing Network(TM).

Registration/Interconnection

         Registration/Set Up:       No charge

         T1/E1 Installation:        Member responsibility

Monthly Recurring

         Port Fee                           $500 Per T1 or E1

Exchange Fees for Calls Transmitted over a Single AGCN Node

         Buyer and Seller each pay 5% of  the Seller Offered Rate

Additional Provisioning Services

         Trunk Group Change         $500 per trunk group change

         Testing Charges (based on seller-requested Arbinet VQoS Testing &
         Posting)

                                    $250 per batch of 5 individual routes -
                                      Seller
                                    $2,000 per batch of up to 50 individual
                                      routes - Seller
                                    $5,000 per batch of up to 150 individual
                                      routes - Seller
                                    $7,500 per batch of up to 300 individual
                                      routes - Seller

         Compliance Checking (based Member-Requested Compliance Checking)

                                    $100 Per Route - Charged to requester if
                                      route meets or exceeds seller's posted QoS
                                    $100 Per Route - Charged to seller if route
                                      fails to meet seller's posted QoS
                                    $100 Per Route - Charged to seller if route
                                      fails to meet Arbinet's earlier QoS
                                      results.

Reporting

         Custom Reports             Onetime Set Up Fee - Price provided upon
                                    request, based on $150 per programming
                                    hour times the numbers of estimated hours

         Call Detail Records        $x.xx per record provided on CD-ROM

         Late Payment               See separate "AGCN Risk-Management Policy"
                                    document, latest version

         Risk Management            See separate "AGCN Risk-Management Policy"
                                    document, latest version

* Bills & Reports will normally be provided securely on the www.agcn.net
Website.<PAGE>

Exhibit 10.9

                       ARBINET HOLDINGS, INC. EMPLOYMENT,
              NONDISCLOSURE AND ASSIGNMENT OF INVENTIONS AGREEMENT

            On this _____ day of ________, in exchange for my becoming employed
by Arbinet Holdings, Inc., or its subsidiaries, affiliates, or successors
(hereinafter referred to collectively as the "Company" or Employer"), I (also
referred to as "Employee") hereby agree as follows:

            1. General. I understand that I have been hired by the Company as an
employee. As an obligation of starting as an employee or continuing my
employment, I will perform for the Company such duties as may be designated by
the Company from time to time, including, but not limited to, those described in
any Company employment offer letter to me. During my period of employment by the
Company, I will devote my best efforts to the interests of the Company and will
not engage in other employment or in any activities detrimental to the best
interests of the Company without the prior written consent of the Company, nor
will I engage in any activity which occupies my attention so as to interfere
with the proper and efficient performance of my duties at the Company. I
understand that my title, duties and reporting responsibilities will initially
be as set forth in any such employment letter, until changed, and that same may
change from those originally set forth in such letter. I understand that there
are no other terms of compensation or benefits except as set forth in the
employment letter. I further understand that I am an at will employee, and my
employment may be terminated by the Company in its discretion at any time. I
further understand that any representations to the contrary are unauthorized and
void, unless contained in a formal written employment contract signed by an
officer of the Company. I further understand that I can terminate my employment
at any time.

            2. Assignment of Inventions. Without further compensation, I hereby
agree promptly to disclose to the Company, and I hereby assign and agree to
assign to the Company or its designee, my entire right, title, and interest in
and to all Inventions (as defined in paragraph 6) which (a) pertain to any line
of business activity of the Company, (b) are aided by the use of time,
equipment, supplies, materials, facilities, services, or trade secrets of the
Company, whether or not during working hours, or (c) relate to any of my work
during the period of my employment with the Company, whether or not during
working hours. I hereby waive and quitclaim to the Company any and all claims of
any nature whatsoever that I now or hereafter may have for infringement of any
patent resulting from any patent applications for any Inventions so assigned to
the Company. If in the course of my employment at the Company, I use in or
incorporate into or permit the Company to use in or incorporate into a released
or unreleased Company product, program, process, or machine, an invention owned
by me or in which I have an interest, the Company is hereby granted and shall
have an exclusive royalty-free, irrevocable, worldwide license to make, have
made, use, and sell that invention without restriction as to the extent of my
ownership or interest. No rights are hereby conveyed in Inventions, if any, made
by me prior to

<PAGE>

my employment with the Company which are identified in a sheet attached to and
made a part of this Agreement, if any (which attachment contains no confidential
information) or in Inventions to which the Company enjoys no claim under
applicable law.

            3. Applications for Copyrights and Patents. I agree to perform, at
Company expense, during and after my employment, all acts deemed necessary or
desirable by the Company to permit and assist Company, in obtaining and
enforcing the full benefits, enjoyment, rights and title throughout the world in
the Inventions hereby assigned to the Company as set forth in paragraph 2 above.
Such acts may include, but are not limited to, execution of documents and
assistance or cooperation in legal proceedings. If I do not cooperate reasonably
in signing such documents, I hereby authorize Company to execute on my behalf as
my attorney in fact for the limited purpose of perfecting Company's rights in
such Inventions, as if I had signed same myself, any and all documents which are
reasonably necessary to perfect Company's rights in such Inventions.

            4. Non-Disclosure. I agree to hold in confidence and not directly or
indirectly to use or disclose, either during or after termination of my
employment with the Company, any Confidential Information (as defined in
paragraph 6 below) I obtain or create during the period of my employment,
whether or not during working hours, except to the extent authorized by the
Company. I further agree to not disclose any Confidential Information to anyone
inside the Company except on a "need-to-know" basis. If I have any questions as
to what comprises such Confidential Information, or to whom if anyone it may be
disclosed, I will consult with my manager. I agree not to make copies of such
Confidential Information except as authorized by the Company. Upon termination
of my employment or upon an earlier request of the Company, I will return or
deliver to the Company all tangible forms of such Confidential Information in my
possession or control, including, but not limited to, drawings, specifications,
documents, records, devices, models, papers, notes, memoranda, manuals, designs,
diskettes, CD's, tapes, and any other material on any media containing or
disclosing any confidential or proprietary technical or business information, or
any other material and copies or reproductions thereof.

            5. Prior Employer Information. I represent that my performance of
all the terms of this Agreement and as an employee of the Company does not and
will not breach any agreement to keep in confidence proprietary information,
knowledge or data acquired by me in confidence or in trust prior to my
employment with the Company, and I will not disclose to the Company, or induce
the Company to use, any confidential or proprietary information or material
belonging to any previous employer, principals, partners, co-venturers, clients,
customers, or suppliers of the vendors or customers of such persons or entities;
and I will not bring onto the premises of the Company any unpublished document
or any property belonging to any such persons or entities without their consent,
and I will not violate any non-disclosure or proprietary rights agreement I
might have signed in connection with any such person or entity. I agree not to
enter into any agreement, either written or oral, in conflict with this
Agreement.

            6. Inventions and Confidential Information. As used in this
Agreement, the

<PAGE>

term "Inventions" includes, without limitation, electronic designs, hardware and
software creations, discoveries, formulae, processes, manufacturing techniques,
trade secrets, inventions, improvements, concepts, techniques, methods, systems,
designs, circuits, cost data, computer programs, development or experimental
work, work in progress, ideas and copyrightable or patentable works, including
all rights to obtain, register, perfect and enforce these proprietary interests.
The term "Confidential Information" means (a) information pertaining to any
aspect of the Company's business which is not known by actual or potential
competitors of the Company or (b) proprietary information of the Company or its
customers or suppliers, whether of a technical nature or otherwise, which the
Company (or its suppliers or vendors) takes reasonable measures to protect
against unauthorized disclosure to or use by third parties, including, without
limitation, technical, financial, marketing, manufacturing, or distribution
information, customer or client lists and names; addresses and phone numbers of
Company's customers, clients, and employees; or other technical or business
information or trade secrets of the Company.

            7. Excluded Inventions. Company shall have no right to any Invention
or to claim that Employee shall have any obligation to assign to Company any
Invention that Employee develops or developed entirely on Employee's own time
without using the Company's equipment, supplies, facilities, material, services,
or trade secret information; provided, however, that the foregoing limitation
shall not apply to Invention(s) that either (i) relate at the time of conception
or reduction to practice of the Invention to the Company's business, or
Company's actual or demonstrably anticipated research or development or (ii)
result from work performed by the Employee for Company. I agree to disclose all
Inventions made by me to the Company in confidence in order to permit a
determination as to whether or not the Inventions should be the property of the
Company.

            8. Non-Solicitation. I agree that, during the term of my employment
and for a period of one year thereafter, I will not solicit or encourage any
employee of the Company to terminate his employment with the Company or to
accept employment with any subsequent employer with whom I am affiliated in any
way. I further agree that for one year after the date my employment by Company
ceases, I will not solicit or attempt to solicit the employment for the benefit
of a third party of any Company employee.

            9. Non-Competition. I agree that for a period of one year after
termination of my employment, I will not accept employment or engage in
activities directly or indirectly competitive with products (including actual or
demonstrably anticipated research or development) on which I worked or about
which I learned proprietary or confidential or trade secret information while
employed at the Company. I agree that I shall not use at any time during the
term of my employment or for any time afterwards, any proprietary or
confidential or trade secret information which I learned while employed at the
Company, in a manner which would be injurious to Company.

            10. Return of Property. Upon termination of my employment or upon an

                                      -3-
<PAGE>

earlier request of the Company, I will return any keys, pass cards,
identification cards, telephone cards, computer equipment, or other property
belonging to the Company.

            11. Reimbursement. I hereby authorize the Company to withhold from
any monies due to me from the Company at or following the time of termination of
my employment (including without limitation salary, bonus, commissions, expense
reimbursement, ESPP refunds, etc.) any amounts which I owe to the Company
(including without limitation amounts for personal expenses charged to my
Company credit cards, phone cards, cash advances, etc.). Further, the Company
may condition the exercise of any stock options by requiring me to
simultaneously sell a sufficient number of shares to generate cash required to
repay any such amounts owed to the Company.

            12. Personal Property. I agree that the Company will not be
responsible for loss of, disappearance, or damage to personal property on the
Company premises, or if applicable, on residential premises subsidized by the
Company (including apartments or temporary housing). I hereby release,
discharge, and hold the Company harmless from any and all claims relating to
loss of, disappearance, or damage to such personal property.

            13. Equitable Relief. I acknowledge that any violation of this
Agreement by me will cause irreparable injury to the Company, and the Company
shall be entitled to extraordinary relief in court, including, but not limited
to, temporary restraining orders, preliminary injunctions, and permanent
injunctions, without the necessity of posting bond or security.

            14. Attorneys' Fees. I agree that if court proceedings are required
to enforce any provision of this Agreement, the prevailing party shall be
entitled to an award of reasonable and necessary expenses of litigation,
including reasonable attorneys' fees.

            15. Termination; Successors and Assigns. This Agreement shall (a)
survive my employment by the Company, (b) not in any way restrict my right or
the right of the Company to terminate my employment, (c) inure to the benefit of
successors and assigns of the Company, and (d) be binding upon my heirs and
legal representatives.

            16. Headings. The headings of the paragraphs of this Agreement are
inserted for convenience only and shall not be deemed to constitute part of this
Agreement or to affect the construction thereof.

            17. Governing Law. I agree that irrespective of its place of
execution or performance, this Agreement shall be governed by, and enforced
pursuant to, the laws of the State of Delaware, without regard to its conflicts
of laws rules or provisions.

            18. Severability. In the event that any of the terms or provisions
herein shall violate any statutory provision or may be otherwise unlawful or
inoperative, it is the intent and

                                      -4-
<PAGE>

desire of the parties that the remainder of this Agreement shall stay in full
force and effect insofar as such terms do not violate any statutory provision or
are otherwise lawful and that this Agreement be enforced to the maximum extent
possible.

            19. Entire Agreement. I certify that, to the best of my information
and belief, I am not a party to any other agreement which will interfere with my
full compliance with this Agreement. This Agreement sets forth the entire
Agreement of the parties as to my employment at the Company and any
representations, promises, or conditions in connection therewith not in writing
and signed by both parties shall not be binding upon either party.

                                      -5-
<PAGE>

            I CERTIFY AND ACKNOWLEDGE THAT I HAVE CAREFULLY READ ALL OF THE
PROVISIONS OF THIS AGREEMENT AND THAT I UNDERSTAND AND WILL FULLY AND FAITHFULLY
COMPLY WITH SUCH PROVISIONS.

ARBINET HOLDINGS, INC.                          EMPLOYEE

By ______________________________               Signature

Title ___________________________               Printed Name

                                      -6-
<PAGE>

                                   ATTACHMENT

      The following "Inventions," as that term is defined in the Agreement to
which this Attachment is affixed, are claimed by Employee.

                                      -7-

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