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     IP TELEPHONY SERVICES DISTRIBUTION AND INTERACTIVE MARKETING AGREEMENT
     ----------------------------------------------------------------------


     This IP Telephony Services Distribution and Interactive Marketing Agreement
(this "Agreement"), dated as of July 14, 1999 (the "Effective Date"), is between
ICQ, Inc., a Delaware corporation, with offices at 22000 AOL Way, Dulles,
Virginia 20166 ("ICQ"), and Net2Phone, Inc. ("N2P"), a Delaware corporation,
with offices at 171 Main Street, Hackensack, NJ  07601.  ICQ and N2P may be
referred to individually as a "Party" and collectively as the "Parties."

                                  INTRODUCTION
                                  ------------

     ICQ is a provider of online communication services, including the ICQ
Service, and is a subsidiary of America Online, Inc., a Delaware corporation
("AOL").  N2P is a provider of various IP Telephony services.  The Parties wish
for N2P to develop and provide to ICQ a customized version of certain N2P
Services that can be distributed through the ICQ Service so as to enable ICQ
Users to send and receive free, or low cost, Internet-enabled telephony
communications. This relationship is further described below and is subject to
the terms and conditions set forth in this Agreement.  Defined terms used but
not defined in the body of the Agreement shall have the meanings ascribed to
such terms in Exhibit A hereto.

                                     TERMS
                                     -----

1.  ICQ IP TELEPHONY SERVICES GENERALLY
    -----------------------------------

     1.1  Description of ICQ IP Telephony Services.  The N2P Services to be
          ----------------------------------------
          offered collectively as the customized ICQ IP Telephony Services shall
          be comprised of the following:


               1.1.1.  PC-to-PC Service.  A PC-to-PC calling service (the
                       ----------------
          "PC-to-PC Service"), which shall allow any ICQ User (through use of
          the ICQ IP Telephony Software as distributed through the ICQ Service
          in accordance with the terms of this Agreement) to originate a voice
          conversation on an Internet enabled PC and to terminate such
          conversation on another Internet-enabled PC. The PC-to-PC Service
          initially shall be provided to ICQ Users without a per-minute or other
          similar charge. The provision of such PC-to-PC Service by N2P shall
          not be designed to compromise the ability of any ICQ User to make PC-
          to-PC calls through ICQ with other clients (e.g., ****).


               1.1.2.  PC-to-Phone Service.  A PC-to-telephone calling
                       -------------------
          service (the "PC- to-Phone Service"), which shall allow any ICQ User
          to originate a voice conversation on an Internet-enabled PC (through
          use of the ICQ IP Telephony Software as distributed through the ICQ
          Service in accordance with the terms of this Agreement) and terminate
          such conversation on a telephone located virtually anywhere in the
          world.

               1.1.3.  Phone-to-PC Service.  A telephone-to-PC calling service
                       -------------------
          (the "Phone-to-PC Service"), which shall allow any ICQ User to
          originate a voice conversation from a telephone and terminate such
          voice conversation on an Internet-enabled PC (through use of the ICQ
          IP Telephony Software as distributed through the ICQ Service in
          accordance with the terms of this Agreement).  Such calls shall be
          initiated by any such ICQ User by dialing a local and/or toll-free N2P
          access number (i.e., a local POP) and entering any such ICQ User's
          account number and PIN, and then the number of the receiving party.
          The Phone-to-PC Service generally shall enable telephone conversations
          with any ICQ User online even if such ICQ User is also using his or
          her only telephone line for online access.



[****] REPRESENTS MATERIAL, WHICH HAS BEEN REDACTED AND SEPARATELY FILED WITH
THE COMMISSION, PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT PURSUANT TO
RULE 406 UNDER THE SECURITIES ACT OF 1933, AS AMENDED.

<PAGE>


                                                               EXECUTION VERSION


                1.1.4.  Phone-to-Phone Calling Card Service.  A
                        -----------------------------------
          telephone-to-telephone calling card service using IP Telephony (the
          "PTP Calling Card Service"), which shall allow any ICQ User to call a
          third party by dialing a local and/or toll-free N2P access number
          (i.e., local POP) and entering the ICQ User's account number and PIN,
          and then dialing the phone number of the person whom such ICQ User is
          calling. For the avoidance of doubt, the Parties acknowledge that the
          PTP Calling Card Service shall include fax-to-fax service.


                1.1.5.  Conference Calling Service.  A conference calling
                        --------------------------
          service (the "Conference Calling Service"), which shall allow
          conference calls initiated from a combination of phones and/or
          Internet-enabled PCs.

                1.1.6.  Optional Services.  ICQ shall provide N2P with a ****
                        -----------------
          (for a period not to exceed **** with respect to the provision of the
          following additional services as additional ICQ IP Telephony Services:
          (i) an integrated voice-messaging service, whereby ICQ Users shall be
          able to send and receive voice messages online and via telephone; (ii)
          a video conference calling service; (iii) a universal messaging
          service, whereby ICQ Users shall be able to access voice mails, e-
          mails, faxes, etc., in one area of the ICQ Service, with such
          messaging capable of being accessed via telephone, the ICQ Client or
          the Worldwide Web; and (iv) **** (the **** aforementioned services,
          collectively, the "Optional Services" and each, an "Optional
          Service"). In the event that the Parties cannot agree, within any such
          **** period, to the terms and conditions pursuant to which N2P would
          offer any such Optional Service(s) to ICQ Users, then ICQ shall have
          the right to enter into an arrangement with any third party
          (including, without limitation, any N2P Competitor) regarding the
          provision of any such Optional Service(s) to ICQ Users through the ICQ
          Service. In addition, the Parties shall, within **** after the
          Effective Date, mutually determine whether (i) a PC-to-fax service,
          whereby ICQ Users may send faxes from their PCs to a facsimile machine
          of a third party, (ii) a fax-to-PC service, whereby ICQ Users may
          receive faxes through their PCs from a facsimile machine of a third
          party, and/or (iii) a virtual private network (VPN) service shall be
          added to this Agreement as additional ICQ IP Telephony Services.
          Moreover, ICQ shall provide N2P with a **** (for a period not to
          exceed ****) with respect to the offering of any Core Premium Services
          in any country other than a Collective International Gateway.

     N2P acknowledges, for the avoidance of doubt, that the right to access the
     ICQ IP Telephony Services initially shall be free of any member fee or
     similar access charge (but excluding per-minute, flat-rate or other usage
     charges and Internet service provider access charges) to ICQ Users,
     provided that N2P reserves the right to charge any fee or charge for such
     --------
     services consistent with its obligations under Sections 3.1 and 3.3.  In
     addition to the foregoing services, N2P shall (i) provide APIs and (ii) to
     the extent commercially reasonable (a) provide connection for ICQ to N2P's
     local equipment and (b) assist finding space for ICQ and its Affiliates to
     locate equipment along with or near N2P's local equipment to enable ICQ and
     its partners to link into aspects or features of the ICQ IP Telephony
     System to provide related services (e.g., voice messaging); provided,
                                                                 --------
     however, that any such arrangement shall be subject to the mutual agreement
     -------
     of the Parties as to the reasonable terms and conditions for such
     arrangement.

1.2  Performance  Each Party shall cause all aspects of the ICQ IP Telephony
     -----------
     Services within its control, including customer service and billing,
     network coverage and performance and fraud detection, to comply in all
     material respects with the applicable standards set forth on Exhibits B, C
     and D.


[****] REPRESENTS MATERIAL, WHICH HAS BEEN REDACTED AND SEPARATELY FILED WITH
THE COMMISSION, PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT PURSUANT TO
RULE 406 UNDER THE SECURITIES ACT OF 1933, AS AMENDED.

                                       2
<PAGE>

                                                               EXECUTION VERSION


     1.3  Launch Cutoff
          -------------

               1.3.1  Cutoff Dates.  N2P shall cause (i) the PTP Calling Card
                      ------------
          Service to be fully prepared for launch on the ICQ Service (A) for
          calls originating in the United States, within **** (****) ****
          following the Effective Date, (B) for calls originating in the Primary
          International Gateways, within **** (****) **** following the
          Effective Date, and (C) for calls originating in the Secondary
          International Gateways, within **** (****) **** following the
          Effective Date; and (ii) each of the Secondary ICQ IP Telephony
          Services (including, without limitation, with respect to the
          Collective International Gateways) to be fully prepared for launch on
          the ICQ Service by the respective cutoff dates therefor set forth on
          Exhibit I to this Agreement (each such date in clauses (i) and (ii)
          above, a "Cutoff Date," and collectively, the "Cutoff Dates"). If any
          Core Premium Service is not fully prepared for launch in a particular
          country (whether the United States or a Collective International
          Gateway) by the applicable Cutoff Date, ICQ shall have the right to
          terminate the exclusivity (as set forth in Section 9 of this
          Agreement) with respect to such Core Premium Service in such country
          (each such country, a "Non-Exclusive Gateway"), and thereby enter into
          an agreement with any third party (including a N2P Competitor) with
          respect to such Core Premium Service in such Non-Exclusive Gateway. In
          the event that within **** (****) **** following any Cutoff Date (as
          to a Core Premium Service), N2P shall not have caused any such Core
          Premium Service to be fully prepared for launch in any such Non-
          Exclusive Gateway and fails to cause such Core Premium Service to be
          fully ready for launch in substitute gateways approved by ICQ (such
          approval not to be unreasonably withheld) that would provide a
          substantially similar percentage of the ICQ User base access to such
          Core Premium Service, then ICQ shall have the right to terminate the
          exclusivity (as set forth in Section 9 of this Agreement) with respect
          to such Core Premium Service, and thereby to enter into an agreement
          with any third party (including, without limitation, any N2P
          Competitor) with respect to such Core Premium Service.

               1.3.2  ICQ Assistance.  To the extent that it shall be reasonably
                      --------------
          necessary for ICQ to undertake any activities within ICQ's reasonable
          control (including providing information or materials) reasonably
          requested by N2P in order to enable N2P to fulfill its development and
          deployment obligations and meet any Cutoff Date, ICQ shall undertake
          any such activities in a timely manner.

               1.3.3  Excusable Delays.  Each applicable Cutoff Date (together
                      ----------------
          with any rights of ICQ related thereto, including, without limitation,
          any right to terminate this Agreement or any exclusivity hereunder)
          shall be deemed extended, subject to the remainder of this Section
          1.3.3,  to the extent (and only for the duration in which):  (i) ICQ
          fails to undertake the reasonably requested and reasonably necessary
          activities described in Section 1.3.2 with respect to any Core Premium
          Service, and N2P has provided ICQ with reasonable informal notice
          (e.g., by e-mail message to the ICQ Technical Liaison or through
          discussion at the quarterly meetings described in Section 2.8) of such
          failure and of its causal effect on N2P's ability to meet any such
          Cutoff Date (an "ICQ Delay"); (ii)  there is (or is reasonably
          expected to be) a U.S. or other regulation which would prevent N2P
          from offering a Core Premium Service in the United States or in any
          Collective International Gateway (or which such regulation would make
          it commercially unreasonable for N2P to offer any such Core Premium
          Service (in such country)) (collectively, a "Regulatory Event"); or
          (iii) any other Force Majeure Event occurs.  The Parties, through the
          Management Committee, shall determine in good faith the period by
          which the Cutoff Date is to be extended (or any other obligations or
          criteria that are to be affected), if at all, by any of the events
          described in this Section 1.3.3; provided, however, that, unless
                                           --------  -------
          otherwise agreed by the Parties, the extension of any Cutoff Date
          resulting from any Regulatory Event or Force Majeure Event shall not
          exceed **** (****) **** in the aggregate.  In the event that a
          Regulatory Event or Force Majeure Event affects N2P Competitors
          generally with respect to the provision of the PTP Calling Card
          Service, then

**** CERTAIN PORTIONS OF THIS EXHIBIT HAVE BEEN OMITTED AND FILED SEPARATELY
WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
CONFIDENTIAL TREATMENT UNDER RULE 406 OF THE SECURITIES ACT OF 1933, AS AMENDED.

                                       3
<PAGE>


                                                              EXECUTION VERSION

          ICQ shall discuss with N2P in good faith extending the Cutoff Date
          beyond such **** (**) *** period. Notwithstanding the foregoing, so
          long as any such Regulatory Event or Force Majeure Event prevents N2P
          from offering the PTP Calling Card Service to ICQ Users in any
          particular Collective International Gateway(s), then N2P's exclusivity
          with respect to the PTP Calling Card Service in such Collective
          International Gateway(s) shall extend beyond such **** (**) *** period
          unless and until a third party is in a position to provide a
          comparable phone-to-phone calling card service in such Collective
          International Gateway(s) and ICQ enters into an agreement with such
          third party for the provision of such phone-to-phone calling card
          service to ICQ Users in such Collective International Gateway(s). For
          the avoidance of doubt, any extension of a Cutoff Date due to an ICQ
          Delay shall be as mutually agreed upon in writing by the Parties.


     1.4  Launch Dates.  The Parties shall record the date on which each ICQ IP
          ------------
          Telephony Service is launched (each such date, a "Launch Date") in a
          written instrument signed by both Parties promptly following any such
          Launch Date; provided, however, that in the event that the Parties
                       --------  -------
          cannot agree as to the definitive Launch Date with respect to a
          particular ICQ IP Telephony Service, the Parties shall submit such
          Dispute to the dispute resolution provisions set forth in Section 17
          of this Agreement.

2.   DEVELOPMENT OBLIGATIONS
     -----------------------

     2.1  Initial Version.  The initial version of each of the ICQ IP
          ---------------
          Telephony Services shall be developed by N2P, by customizing each of
          the existing N2P Services as set forth in Sections 1.1.1 through 1.1.5
          to conform to the product specifications set forth in Exhibit B to
          this Agreement (collectively, together with such modifications thereto
          or any such additional specifications as may be agreed to in writing
          by the Parties after the Effective Date, the "Specifications").  As
          part of such customization, the N2P Services shall be developed to
          function in an integrated manner with the operation of the ICQ Client
          to the extent set forth in the Specifications or elsewhere in this
          Agreement.  To the extent that any material conflict exists between
          (i) Exhibit B to this Agreement and (ii) the provisions of the
          principal body of this Agreement, the principal body of this Agreement
          (i.e., Sections 1 through 18 hereof) shall govern.

     2.2  Updates.
          -------


                2.2.1     Notification of Updates.  If, during the Term, N2P
                          ---------------------
          develops any Update of any N2P Service that is generally commercially
          available to users of the N2P Services, N2P shall, in each such case,
          (i) promptly notify ICQ of such Update and (ii) promptly (i.e., in the
          shortest commercially reasonable time period) include such Update
          (provided that such Update complies with the Specifications or the
          ---------
          terms of this Agreement) in the applicable ICQ IP Telephony Service.


                2.2.2     No Notification Required.  N2P shall not be
                          ------------------------
          obligated to notify ICQ of or to provide to ICQ any modification,
          improvement, addition, deletion, feature or functionality of the N2P
          Services provided by N2P to another customer if such modification,
          improvement, addition, deletion, feature or functionality is subject
          to contractual restrictions that would prohibit N2P from providing it
          to ICQ hereunder. For the avoidance of doubt, the Parties acknowledge
          that N2P shall not be required to notify ICQ of or provide to ICQ any
          modification, improvement, addition, deletion, feature or
          functionality of any Optional Service, Expanded Service or other IP
          Telephony Service (apart from any Core Premium Service) unless the
          Parties have agreed to the provision by N2P to ICQ Users of any such
          service pursuant to the terms of this Agreement.

**** CERTAIN PORTIONS OF THIS EXHIBIT HAVE BEEN OMITTED AND FILED SEPARATELY
WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
CONFIDENTIAL TREATMENT UNDER RULE 406 OF THE SECURITIES ACT OF 1933, AS AMENDED.

                                       4
<PAGE>

                                                               EXECUTION VERSION


               2.2.3  Disagreement.  In the event of any disagreement between
                      ------------
          the Parties regarding the provision by N2P of any such Updates to ICQ
          (e.g., as to whether any such Update is generally commercially
          available, the length of the time period in which any such Update is
          to be implemented, etc.), such disagreement shall be submitted to the
          Management Committee pursuant to Section 17 of this Agreement.

     2.3  Additional ICQ Modifications.
          ----------------------------


                2.3.1     Definition.  ICQ may in its discretion, from time
                          ----------
          to time during the Initial Term, request that N2P, to the extent
          commercially reasonable, (i) add new functionality or features to any
          ICQ IP Telephony Service(s), (ii) modify elements related to the ICQ
          GUI (but not elements of the ICQ GUI itself), and/or (iii) modify the
          ICQ IP Telephony Services in connection with modifications of the ICQ
          Client and ICQ Service (which modifications shall be subject to
          Section 2.7 and which modifications ICQ estimates will occur at least
          twice a year), (each of (i), (ii) and (iii) above, an "Additional ICQ
          Modification"). The Parties agree that any features, functionality,
          additions, deletions or other modifications necessary to be carried
          out by N2P in order for N2P to comply with its obligations under
          Section 3 of this Agreement (collectively, the "Necessary
          Modifications") shall not constitute Additional ICQ Modifications and
          that ICQ shall not be required to pay for any such Necessary
          Modifications.


                2.3.2     Request for Non-Substantial Modification.  In the
                          ----------------------------------------
          event that ICQ requests Additional ICQ Modifications that N2P
          reasonably believes would not involve (i) a substantial cost or
          expense to N2P (i.e., less than **** Dollars
          ($****) in the aggregate during any Year of this Agreement) or (ii)
          a substantial commitment of N2P personnel, N2P shall develop the
          Additional ICQ Modifications in cooperation with ICQ on a schedule to
          be mutually agreed upon by the Parties. Each Party shall allocate
          development resources on a high priority basis to complete such
          Additional ICQ Modifications in accordance with such schedule. ICQ
          shall pay for the actual, reasonable, fully-allocated cost of
          developing any such Additional ICQ Modifications.


                2.3.3     Request for Substantial Modification.  In the event
                          ------------------------------------
          that ICQ requests an Additional ICQ Modification that N2P reasonably
          believes would involve a substantial cost or expense to N2P, or a
          substantial commitment of N2P personnel, the Parties shall negotiate
          in good faith regarding the request for such Additional ICQ
          Modification, including, without limitation, the appropriate schedule
          for development and deployment, rights to the results of the
          development, interoperability requirements, and the relevant business
          terms (e.g., amount of any payments for the development, the revenue
          model for the features or functions, etc.). If and when the Parties
          reach agreement on the terms and conditions for such Additional ICQ
          Modification, N2P shall develop the Additional ICQ Modification in
          cooperation with ICQ, and each Party shall allocate development
          resources on a high priority basis to complete such Additional ICQ
          Modification in accordance with such schedule.


                2.3.4     Commissioned Works.  Notwithstanding the foregoing,
                          ------------------
          in the event that the Parties are unable to agree as to the
          development or deployment of any Additional ICQ Modification in
          accordance with Section 2.3.3, ICQ shall have the right during the
          Initial Term to require N2P to assist ICQ in securing a mutually
          agreed-upon third party to develop any such Additional ICQ
          Modifications for ICQ; provided, however, that either N2P or (at ICQ's
                                 --------  -------
          option) ICQ may perform such development. In the event that a third
          party is secured to perform such development, N2P will use
          commercially reasonable efforts to assist such third party in
          performing such development. Any development by any such third parties
          shall not be considered the responsibility of N2P, and such third
          parties shall not be considered contractors of N2P. To the extent that
          portions of such Additional ICQ Modifications (including intellectual
          property rights therein) are developed


**** CERTAIN PORTIONS OF THIS EXHIBIT HAVE BEEN OMITTED AND FILED SEPARATELY
WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
CONFIDENTIAL TREATMENT UNDER RULE 406 OF THE SECURITIES ACT OF 1933, AS AMENDED.

                                       5
<PAGE>

                                                               EXECUTION VERSION

          by N2P specifically for ICQ pursuant to this Section 2.3.4, such
          portions shall be considered "Commissioned Works," but "Commissioned
          Works" shall exclude, any software, modules, routines or subroutines,
          documentation or other materials, and any methods, processes,
          techniques or inventions, that were (i) developed by or for N2P prior
          to such development for ICQ or (ii) developed independently by or for
          N2P (i.e., independent of the development carried out for ICQ under
          this Section 2.3.4 by N2P). To the extent that (a) N2P develops any
          Commissioned Works pursuant to this Section 2.3.4 without requiring
          that ICQ pay for such Commissioned Works (in cash or such other
          consideration as may be agreed to by the Parties), then N2P shall own
          all right, title and interest in and to such Commissioned Works
          (provided, however, that in such case, ICQ shall have a fully paid-up,
           --------  -------
          royalty-free, non-exclusive, non-transferable and worldwide license
          for the Term to use, reproduce, directly and indirectly distribute,
          transmit, display, perform, sublicense and adapt such Commissioned
          Works), (b) ICQ pays (in cash or such other consideration as may be
          agreed to by the Parties) for any such Commissioned Works pursuant to
          this Section 2.3.4, then ICQ shall own all right, title and interest
          in and to such Commissioned Works, and (c) the Parties so agree, the
          Parties shall co-own all right, title and interest in and to such
          Commissioned Works, which shall be treated as Joint Work Product for
          purposes of this Agreement. Each Party shall cooperate with the other
          Party in documenting and perfecting all rights with respect to the
          Commissioned Works, including executing any necessary assignments,
          applications or other documentation with respect to the Commissioned
          Works.

                2.3.5     Disagreement.  In the event that the Parties
                          ------------
          disagree as to the development or deployment of any Additional ICQ
          Modification, including any disagreement as to the terms and
          conditions for the development or deployment thereof, the Parties
          shall submit such Dispute to the Management Committee in accordance
          with the terms of Section 17 of this Agreement.

     2.4  Expansion to Cover Other Services and Platforms of ICQ.
          ------------------------------------------------------

               2.4.1  Request by ICQ to Encompass Expanded Service Within an ICQ
                      ----------------------------------------------------------
          Telephony Service.  ICQ may in its discretion, from time to time
          -----------------
          during the Initial Term, seek to expand any ICQ IP Telephony
          Service(s) to provide service through any and all platforms and
          services hereafter offered by ICQ or an Affiliate of ICQ (other than
          the ICQ Service) (the "Expanded Services").  In such event, ICQ may in
          its discretion request that N2P develop or deploy or assist with the
          development or deployment of any such Expanded Services.  Upon the
          receipt of any such request, and before any development or deployment
          of any Expanded Services, the Parties shall negotiate in good faith
          regarding the request for any such Expanded Services, including,
          without limitation, with respect to the appropriate schedule for any
          development and deployment, and the relevant business terms (e.g., the
          amount of any payments for any development, the revenue model for the
          Expanded Services, etc.).  If and when the Parties reach agreement on
          the terms and conditions related to the development and deployment of
          such Expanded Services, each Party shall allocate development and
          deployment resources on a high priority basis towards the development
          and deployment of an updated version of the applicable ICQ IP
          Telephony Software to support such Expanded Services in accordance
          with the terms and conditions agreed upon by the Parties.

               2.4.2  Failure to Agree.  In the event that the Parties disagree
                      ----------------
          as to the development or deployment of any Expanded Service, including
          any disagreement as to the terms and conditions for the development or
          deployment thereof, the Parties shall submit such Dispute to the
          Management Committee in accordance with the terms of Section 17 of
          this Agreement; provided, however, that in the event that the
                          --------  -------
          Management Committee is unable to agree as to the terms and conditions
          regarding such development and deployment, such Expanded Service shall
          not constitute an ICQ IP Telephony

                                       6
<PAGE>

                                                               EXECUTION VERSION

          Service for purposes of this Agreement, and N2P shall not have any
          rights or obligations with respect to such Expanded Service.

               2.4.3  Agreement.  Nonetheless, if the Parties agree to add an
                      ---------
          Expanded Service to this Agreement, such Expanded Service, for all
          purposes hereof, shall be considered part of the ICQ IP Telephony
          Services, and all rights and obligations of ICQ and N2P hereunder
          shall apply to such Expanded Service and users of such services shall
          be considered ICQ Users for purposes of this Agreement.  For purposes
          of calculating the Revenue Share and the Revenue Threshold hereunder,
          any such agreed-upon Expanded Service shall be aggregated with the ICQ
          IP Telephony Services as if only one service existed (unless otherwise
          agreed upon by the Parties).


     2.5  Delivery and Acceptance.
          -----------------------

               2.5.1  Initial Versions.  Following the completion of the
                      ----------------
          development and internal testing of each initial version of the Core
          Premium Services, N2P shall deliver each such initial version to ICQ
          for evaluation and acceptance in accordance with the delivery dates
          set forth on Exhibit I hereto.  ICQ shall have thirty (30) days
          following such delivery by N2P to evaluate whether each such initial
          version functions in accordance with the Specifications and without
          any Severity 1 or Severity 2 Problems.  If ICQ reasonably determines
          that any such initial version of any Core Premium Service does not
          function in material conformity with the Specifications and/or without
          Severity 1 or Severity 2 Problems, ICQ may reject such version by
          providing N2P with written notice within such thirty (30) day period
          specifying in detail the reason for rejection.  Any initial version of
          the Core Premium Services that has not been so rejected within such
          thirty (30) day period shall be deemed accepted.  If ICQ rejects any
          initial version of any Core Premium Service, then following such
          rejection, N2P shall use commercially reasonable efforts to correct
          (as promptly as commercially possible but in any case by the
          applicable Cutoff Date) in all material respects, the deficiencies in
          such initial version that were specified in ICQ's notice of rejection.
          If the deficiencies specified in any such ICQ notice of rejection have
          not been remedied in all material respects by such Cutoff Date, ICQ
          shall have the right to terminate the exclusivity (as set forth in
          Section 9 of this Agreement) with respect to such Core Premium Service
          and thereby enter into an agreement with any third party (including a
          N2P Competitor) with respect to such Core Premium Service.

               2.5.2  Subsequent Versions.  Following the completion of the
                      -------------------
          development and internal testing of each subsequent version (i.e.,
          subsequent to the initial version) of any Core Premium Service (or any
          initial version of any Optional Service, Expanded Service or other IP
          Telephony service mutually agreed upon by the Parties to be provided
          by N2P hereunder) (each, a "Subsequent Version"), N2P shall deliver
          each such Subsequent Version to ICQ for evaluation and acceptance.
          ICQ shall have thirty (30) days following such delivery by N2P to
          evaluate whether such Subsequent Version functions in accordance with
          the Specifications and without any Severity 1 or Severity 2 Problems.
          If ICQ reasonably determines that any such Subsequent Version does not
          function in material conformity with the Specifications and without
          Severity 1 or Severity 2 Problems, ICQ may reject such Subsequent
          Version by providing N2P with written notice within such thirty (30)
          day period specifying in detail the reason for rejection.  Any
          Subsequent Version that has not been so rejected within such thirty
          (30) day period shall be deemed accepted.

               2.5.3  Acceptance Process.  The acceptance criteria set forth in
                      -------------------
          Sections 2.5.1 and Section 2.5.2 of this Agreement shall not include
          as factors the Core ICQ Obligations, and ICQ shall not withhold any
          such acceptance due to its failure to comply with the Core ICQ
          Obligations.

                                       7
<PAGE>


                                                               EXECUTION VERSION

     2.6  Assistance from ICQ.  ICQ shall provide N2P with reasonable
          -------------------
          consultative assistance in connection with the development obligations
          of N2P as set forth in this Section 2.  In addition, during the Term,
          ICQ agrees to notify N2P in advance of any modifications and/or
          changes to the ICQ Service that ICQ believes may result in
          incompatibility between the Parties' respective systems or
          interruptions in the ICQ IP Telephony Services (including without
          limitation, network configuration changes and system maintenance).
          The Parties shall work together to resolve any such potential or
          actual incompatibility, or interruptions, in connection with ICQ's
          implementation of any such change and/or modification.

     2.7  Other Modifications.  ICQ reserves the right to redesign and/or modify
          -------------------
          the organization, structure, "look and feel," navigation, features and
          other elements of the ICQ Service and the ICQ IP Telephony Services
          (subject to (i) the technical limitations and design requirements of
          the N2P Services and N2P System (which shall themselves remain subject
          to the Specifications) and (ii) the requirement that such ICQ Service
          and ICQ IP Telephony Services remain in compliance with the terms and
          conditions of this Agreement.  ICQ shall provide N2P with reasonable
          notice of any proposed redesign and/or modification in advance of
          developing such redesign or modification, and the Parties shall
          consult in good faith on how to avoid any adverse effect on the ICQ
          Telephony Services (including, without limitation, any adverse effect
          on the functionality or performance thereof) as a result of such
          redesign and/or modification.  Such notice shall be sufficiently in
          advance of the proposed redesign or modification such that the Parties
          will have a reasonable opportunity to complete the process, and avoid
          the adverse effect on the ICQ IP Telephony Services, as contemplated
          by this Section 2.7.

     2.8  Meetings.  In furtherance of the rights and obligations of the Parties
          --------
          under this Agreement, the Parties shall meet, in person on a quarterly
          basis (the "Quarterly Meetings") and  by telephone on a monthly basis
          (the "Telephone Meetings").  With respect to the four (4) Quarterly
          Meetings to take place during each Year of the Initial Term, two (2)
          such Quarterly Meetings shall take place in Israel (at ICQ
          headquarters or such other location as mutually agreed upon by the
          Parties) and the other two (2) such Quarterly Meetings shall take
          place in the United States (at N2P headquarters or such other location
          as mutually agreed upon by the Parties).  The Quarterly Meetings shall
          be used to discuss, inter alia, long-term planning, strategic and
                              ----- ----
          development issues, and marketplace and performance information
          regarding the obligations and criteria applicable to the Parties
          hereunder (including the obligations and criteria under Section 3),
          and shall be attended by the Technical Liaisons and appropriate senior
          development and management personnel.  The Parties anticipate that the
          first such Quarterly Meeting shall occur as promptly as possible
          following the Effective Date but in no event later than two (2) months
          following the Effective Date.  The Telephone Meetings shall be used to
          discuss, among other things, the activities and relationship
          contemplated by this Agreement, including the proposed implementation
          and/or progress of any Updates or Additional ICQ Modifications,
          changes to the operating standards set forth on Exhibit B, Exhibit C
          or Exhibit D hereto, ICQ Exclusive Offers to be provided during the
          subsequent quarter, and the redesign or modification of elements of
          the ICQ Service or ICQ IP Telephony Services.

     2.9     No Support for ICQ Modifications.  The Parties acknowledge that any
             --------------------------------
          modifications or additions to the ICQ IP Telephony Services that are
          carried out by ICQ (or carried out for ICQ by a third party not
          contracted or subcontracted by N2P) shall not affect the determination
          of whether N2P has met its obligations or the criteria set forth in
          Sections 1.3 or 3 of this Agreement.

                                       8
<PAGE>

                                                               EXECUTION VERSION

3.   N2P PERFORMANCE
     ---------------

     3.1  Pricing and Terms.  N2P will ensure that the prices (including any
          -----------------
          other required consideration) for each Core Premium Service and other
          aspects of such Core Premium Service (including, without limitation,
          the terms and conditions related to such Core Premium Service, the
          scope, quality and functionality of each such Core Premium Service,
          customer service and billing, user experience and interface) are,
          taken as a whole, not materially less favorable as compared to the
          corresponding N2P Service as offered by or on behalf of N2P directly
          to retail customers through any Additional N2P Channel.  In the event
          that at any time during the Initial Term, N2P fails to comply with
          such obligation (i) as to any pricing aspect of a Core Premium Service
          (a "Pricing Failure"), and such Pricing Failure is not cured within
          **** (****) **** after notice to N2P of such Pricing Failure (unless
          otherwise agreed upon in writing by the Parties), or (ii) as to a non-
          pricing aspect of a Core Premium Service (a "Non-Pricing Failure"),
          and such Non-Pricing Failure is not cured within **** (****) *****
          after notice thereof to N2P (unless otherwise agreed upon in writing
          by the Parties), ICQ shall have the right to suspend, until such time
          as N2P cures such failure, (i) distribution of such Core Premium
          Service, (ii) any of ICQ's promotional obligations hereunder related
          specifically to such Core Premium Service, and/or (iii) any Listings
          related specifically to such Core Premium Service. In addition, in the
          event that N2P fails to cure such Pricing Failure within **** (****)
          **** after notice thereof to N2P or such Non-Pricing Failure within
          **** (****) **** after notice thereof to N2P (or, in each case, such
          shorter period as is reasonably feasible) ICQ shall have the right to
          terminate the exclusivity granted to N2P hereunder with respect to
          such non-compliant Core Premium Service (and in the event that N2P
          shall have failed to cure, within thirty (30) days after notice
          thereof to N2P, any such Pricing Failure and/or Non-Pricing Failure as
          to a total of **** (****) **** during the Initial Term, then ICQ shall
          have the right to terminate this Agreement in accordance with Section
          16.6 hereof). For purposes of this Section 3.1, the categorization of
          what constitutes retail customers, as opposed to wholesale customers,
          shall be consistent with general telecommunications industry practice,
          and the characterization (as retail or wholesale) of services provided
          to customers through a N2P Affiliate shall be based on the delivery
          mechanism of such services by such N2P Affiliate to any third party
          (i.e., if the services are sold by N2P Affiliates to third parties on
          a retail basis, then such services shall be deemed to be retail
          services for purposes of this Section 3.1). Any dispute as to such
          categorization shall be submitted to the Management Committee in
          accordance with Section 17 of this Agreement.

     3.2  Operating Standards.
          -------------------

               3.2.1  Compliance.  During the Term, N2P will cause the ICQ IP
                      ----------
          Telephony Services to comply in all material respects with the
          standards set forth in each of Exhibit B, Exhibit C and Exhibit D.  To
          the extent standards are not established in Exhibits B, C or D with
          respect to any aspect of the ICQ IP Telephony Services, N2P will use
          commercially reasonable efforts to provide such aspect at a level of
          quality, completeness or timeliness which meets or exceeds prevailing
          standards in the IP Telephony industry.  Without limiting the
          generality of the foregoing, N2P will use commercially reasonable
          efforts to provide all hardware, software, telecommunications lines
          and other infrastructure necessary to meet traffic and usage demands
          on the ICQ Service in connection with the offering of the ICQ IP
          Telephony Services.

**** CERTAIN PORTIONS OF THIS EXHIBIT HAVE BEEN OMITTED AND FILED SEPARATELY
WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
CONFIDENTIAL TREATMENT UNDER RULE 406 OF THE SECURITIES ACT OF 1933, AS AMENDED.

                                       9
<PAGE>


                                                               EXECUTION VERSION

          3.2.2  N2P Technical Problem.
                 ---------------------

                        (a)  Occurrence; Cure Period.  In the event of any
                             -----------------------
               material technical problem (over which N2P exercises control)
               affecting the use by ICQ Users of any ICQ IP Telephony Service
               and constituting a Severity 1 Problem or Severity 2 Problem (an
               "N2P Technical Problem"), ICQ shall have the right to suspend (i)
               distribution of such ICQ IP Telephony Service, (ii) any of ICQ's
               promotional obligations hereunder related specifically to such
               ICQ IP Telephony Service, and/or (iii) any Listings related
               specifically to the such ICQ IP Telephony Service until such time
               as N2P corrects such N2P Technical Problem. Prior to suspending
               any such distribution of any particular ICQ IP Telephony Service,
               related promotional obligations of ICQ or related Listings
               hereunder, ICQ shall provide N2P with notice and an opportunity
               to cure, as provided below, unless, in its reasonable discretion,
               ICQ will be materially and adversely affected in a substantial
               manner by failing to act immediately or at some subsequent time
               prior to the completion of the notice and cure period. Any such
               notice shall be in writing and shall contain a reasonably
               detailed explanation for ICQ's intention to suspend (and, in
               reasonable detail, the reasons for suspending) access to the
               particular ICQ IP Telephony Service and related promotional
               obligations and Listings due to the occurrence of the N2P
               Technical Problem. Upon receipt of such notice, N2P will have at
               least **** (****) **** to cure the applicable N2P Technical
               Problem to ICQ's reasonable satisfaction and, if cured, ICQ shall
               not suspend the affected ICQ IP Telephony Service(s) and/or
               related promotional obligations or Listings. ICQ will make good
               faith efforts to facilitate N2P's cure efforts and to extend the
               cure period as appropriate, so long as ICQ, in its reasonable
               discretion, is not materially adversely affected by any such
               extension. In the event ICQ suspends distribution of any ICQ IP
               Telephony Service, any ICQ promotional obligations and/or any
               Listings due to the occurrence of any such N2P Technical Problem,
               ICQ will notify N2P in writing within **** (****) **** of such
               decision, setting forth in reasonable detail the explanation
               therefor.

                    (b) Cure; Resumption of Distribution.  When and if the cure
                        ---------------------------------
               to an N2P Technical Problem is demonstrated to ICQ's reasonable
               satisfaction, which satisfaction shall not be unreasonably
               withheld, ICQ shall resume distribution of the affected ICQ IP
               Telephony Service, promotional obligations and Listings as soon
               as commercially practical; provided, however, that (in addition
                                          --------  -------
               to any other remedies available to ICQ in this Agreement,
               including, without limitation, in Section 16.6 hereof) in the
               event that N2P shall fail to cure any such N2P Technical Problem
               within thirty (30) days following notice thereof by ICQ to N2P,
               then ICQ shall have the right to terminate the exclusivity (as
               set forth in Section 9 of this Agreement) with respect to the
               Core Premium Service(s) affected by such N2P Technical Problem
               and thereby enter into an agreement with any third party
               (including any N2P Competitor) to promote (or offer the services
               of) such third party with respect to such Core Premium
               Service(s).

     3.3  Competitive Performance Standards.  N2P will use commercially
          ---------------------------------
          reasonable efforts during the Initial Term to cause each of the Core
          Premium Services included in the ICQ IP Telephony Services to be "Best
          of Breed."  For purposes of this Agreement, "Best-of-Breed" means, as
          to each Core Premium Service, that, as determined by a cross-section
          of mutually agreed-upon third-party reviewers who are recognized
          authorities in the IP Telephony industry, (i) such Core Premium
          Service is competitive, when taken as a whole, with the same or
          substantially similar services offered by any N2P Competitor through
          any similar online distribution channel; (ii) the rates associated
          with such Core Premium Service (including per-minute rates), when
          taken as a whole, are equal to or lower than the rates, when taken as
          a whole, for the same or substantially similar

**** CERTAIN PORTIONS OF THIS EXHIBIT HAVE BEEN OMITTED AND FILED SEPARATELY
WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
CONFIDENTIAL TREATMENT UNDER RULE 406 OF THE SECURITIES ACT OF 1933, AS AMENDED.

                                       10
<PAGE>

                                                               EXECUTION VERSION

          products or services offered by any N2P Competitor; and (iii) N2P is
          included within the top **** (****) providers of such IP Telephony
          Service (when taken as a whole) in the IP Telephony industry, taking
          into consideration, as a whole, such factors as pricing, scope and
          selection of products and services, technology platform and other
          aspects of the distribution channel, quality and ease of use of
          products and services, functionality, call quality, quality of
          customer support, success rates of call completion and overall level
          of customer satisfaction. The determination of "Best-of-Breed" shall
          not take into account limited promotions (e.g., ****) In the event
          that at any time during the Initial Term, a Core Premium Service fails
          to be Best-of-Breed, ICQ may notify N2P of such failure (including the
          reasons therefor and the basis for the determination thereof under
          this Agreement) and of its intention to terminate exclusivity with
          respect to the non-Best-of-Breed Core Premium Service. For a period of
          **** (****) **** following receipt of such notice, N2P shall have the
          opportunity to remedy the failure. Notwithstanding the foregoing (and
          in addition to any other remedies available to ICQ in this Agreement,
          including, without limitation, in Section 16.6 hereof), in the event
          that N2P has not cured any such failure (regardless of the level of
          effort by N2P to cure such failure) by the end of such **** (****)
          **** period (unless the Parties mutually agree in writing to extend
          such cure period), ICQ shall have the right to terminate the
          exclusivity (as set forth in Section 9 of this Agreement) with respect
          to such non-Best-of-Breed Core Premium Service and thereby enter into
          an agreement with any third party (including a N2P Competitor) to
          promote (or offer the services of) such third party with respect to
          the corresponding non-Best-of-Breed Core Premium Service.

     3.4  No Payment by ICQ.  For the avoidance of doubt, the Parties
          -----------------
          acknowledge that ICQ shall not be required to pay N2P any compensation
          in connection with any modification, addition, deletion, feature or
          functionality or other improvement required to be provided by N2P in
          order for N2P to comply with its obligations under Section 3 of this
          Agreement.

     3.5  N2P Not Responsible for Core ICQ Obligations.  The Parties acknowledge
          ---------------------------------------------
          that the Core ICQ Obligations shall not affect the determination as to
          whether N2P has satisfied the criteria and obligations set forth in
          Section 3 of this Agreement.  The Parties also acknowledge that the
          determination of whether N2P has satisfied the criteria and
          obligations set forth in Sections 3.1, 3.2 or 3.3 of this Agreement
          shall not be affected by features or functionality that N2P offers to
          ICQ and that ICQ (a) declines to implement or support or (b) cannot
          (e.g., due to technological or operational constraints within the
          control of ICQ) reasonably implement or support, provided that (i) in
          either such case, N2P provides ICQ with reasonable prior, informal,
          written notice (e.g., by e-mail) of the anticipated effects of ICQ's
          not implementing or supporting the features or functions on the ICQ IP
          Telephony Services and (ii) in the case of technological or
          operational constraints within ICQ's control, N2P provides ICQ with
          reasonable prior informal notice of such constraints.

4.   DISTRIBUTION AND PROMOTION
     --------------------------

     4.1  Distribution and Promotion Requirements.  During the Term, subject to
          ---------------------------------------
          the terms and conditions herein, the Parties agree to the following:

          4.1.1.    Access to ICQ IP Telephony Service.  ICQ shall distribute
                    ----------------------------------
                    the ICQ IP Telephony Services and the ICQ IP Telephony
                    Software, provided that ICQ shall determine in its
                    reasonable discretion (upon consultation with N2P) the
                    manner in which such distribution occurs (e.g., through the
                    bundling with the ICQ Client of the ICQ-customized N2P IP
                    Telephony Software, through a "plug-in" of such software,
                    etc.).

          4.1.2     Distribution of ICQ IP Telephony Software.
                    -----------------------------------------

[****] REPRESENTS MATERIAL, WHICH HAS BEEN REDACTED AND SEPARATELY FILED WITH
THE COMMISSION, PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT PURSUANT TO
RULE 406 UNDER THE SECURITIES ACT OF 1933, AS AMENDED.

                                       11
<PAGE>

                                                               EXECUTION VERSION

                   (a)  PTP Calling Card Service.  Promptly upon the
                        ------------------------
               acceptance by ICQ of the initial version of the PTP Calling Card
               Service (including any Updates thereto), ICQ shall promote and
               distribute such initial version as part of the ICQ Service
               subject to the remainder of this Section 4.1.2.


                   (b)   Secondary ICQ IP Telephony Services.  Following the
                         -----------------------------------
               acceptance by ICQ of the initial version of any Secondary ICQ IP
               Telephony Service (including any Updates thereto) and subject to
               the remainder of this Section 4.1.2, ICQ shall promote and
               distribute such accepted Secondary ICQ IP Telephony Service as
               part of the 2000a ICQ Client and related version of the ICQ
               Service.  ICQ shall launch (i.e., make generally commercially
               available) such 2000a ICQ Client and version of the ICQ Service
               no later than **** provided, however, that in the event
                                           --------  -------
               that ICQ shall not have launched the 2000a Client and related
               version of the ICQ Service by **** (as N2P's sole and
               exclusive remedy hereunder), the Initial Term shall be extended
               by one day for each day beyond **** that ICQ fails to
               launch the 2000a ICQ Client and related version of the ICQ
               Service.


                   (c)   Distribution.  The version of the ICQ Client that is
                         ------------
               generally made available for downloading on the ICQ Service or
               otherwise generally distributed in connection with the ICQ
               Service shall include either the ICQ IP Telephony Software or a
               means (consistent with Section 4.1.4 of this Agreement) by which
               ICQ Users can access and use the ICQ IP Telephony Services.


                   (d) Exceptions.  ICQ shall be relieved of the foregoing
                       ----------
               obligations under the conditions of, and in accordance with,
               Section 4.2 and the other terms of this Agreement.  In addition,
               ICQ may also support other IP Telephony services (including those
               of N2P Competitors) as to which, and in the countries in which,
               N2P (on the Effective Date or thereafter) does not have
               exclusivity.  Moreover, but subject to the requirements of this
               Agreement, ICQ may provide to a particular customer a version of
               the ICQ Client that does not include the customizations developed
               by N2P hereunder or any other IP Telephony capability if such
               customer requests (provided that ICQ does not encourage such
               customer to so request or offer such customer in a prominent
               fashion an opportunity to so request) that it receive a version
               of the ICQ Client that does not include N2P customizations.


                   (e) Subsequent Versions.  Following the acceptance by ICQ
                       -------------------
               of any Subsequent Version, ICQ will distribute such Subsequent
               Version with the ICQ Service within a time period (of not more
               than six (6) months) to be determined by ICQ in its reasonable
               discretion (e.g., taking into account such factors as the
               imminence of the launch of a new version of the ICQ Client,
               etc.), upon consultation with N2P.

        4.1.3  Localized Versions.  At such time as ICQ makes generally
               ------------------
               commercially available localized versions of the ICQ Client
               (including, without limitation, any translation service
               distributed by ICQ in connection therewith) for use in the
               Collective International Gateways (or in any other countries in
               which the Parties agree that N2P shall provide the ICQ IP
               Telephony Services) (collectively, the "Localized Versions"), N2P
               shall cause (within a commercially reasonable time period) to be
               fully prepared for launch through the ICQ Service versions of the
               Core Premium Services, if any, that are required to be compatible
               with such Localized Versions. The Parties shall use commercially
               reasonable efforts to develop, make available and otherwise
               distribute Updates to such Localized Versions, from time to time
               as Updates for the U.S. English-language versions of


[****] REPRESENTS MATERIAL, WHICH HAS BEEN REDACTED AND SEPARATELY FILED WITH
THE COMMISSION, PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT PURSUANT TO
RULE 406 UNDER THE SECURITIES ACT OF 1933, AS AMENDED.

                                       12
<PAGE>


                                                               EXECUTION VERSION

               the ICQ IP Telephony Services are publicly released. ICQ shall be
               responsible for the localization of the ICQ GUI.

        4.1.4   N2P Listing and Promotion.  ICQ (together with any Affiliate of
                -------------------------
                ICQ that offers the ICQ Service) shall feature, offer and
                promote the ICQ IP Telephony Services prominently in the ICQ
                Service.

                   (a) In furtherance and as part of the foregoing, the initial
               implementation of such promotional requirement shall include,
               where feasible, the following (and any future implementation
               shall be consistent in terms of prominence (e.g., in terms of
               size, location, appearance and the like) with the following):

                       (i) Each ICQ IP Telephony Service will be "sub-branded"
               with the name "Net2Phone," "N2P" or any other N2P Mark designated
               by N2P, subject to the approval of ICQ not to be unreasonably
               withheld (the "N2P Name"). "Sub-branding" means that each ICQ IP
               Telephony Service will be labeled and marketed with the name
               "****" or such other ICQ name as ICQ designates (the "ICQ Name"),
               but that each such ICQ IP Telephony Service shall, where feasible
               and to the extent not inconsistent with the ICQ Look and Feel,
               have a prominent tag line such as "****" or "****," and a N2P
               Mark. The N2P tag line and Mark (the "Brandings") will be
               included prominently in (and where feasible, will be placed
               within reasonable proximity to the ICQ brandings in) the (A)
               areas which provide information regarding the use of and enable
               ICQ users to launch the ICQ IP Telephony Service (collectively,
               the "Support Area"), (B) other areas within the ICQ Service that
               relate principally to the ICQ IP Telephony Services (including,
               without limitation, ****), and (C) the ICQ IP Telephony Software
               or areas within the ICQ Client that relate principally to an ICQ
               IP Telephony Service (the "Branded Areas").

                      (ii) The Brandings will also appear prominently in
               advertising, promotional, public relations and marketing material
               relating principally to the ICQ IP Telephony Services.

                     (iii) There will be links (evidenced by the ICQ Name or
               a graphical image of a telephone, or such other link as ICQ
               selects) to the PC-originated ICQ IP Telephony Services
               (initially, the PC-to-PC Service and PC-to-Phone Service)
               throughout the ICQ Service in areas providing ICQ Users with the
               ability to perform communication functions (e.g., white page
               results, yellow page results, directory search results, ****
               etc.) (collectively, the "Links"). The Links will launch the ICQ
               IP Telephony Services.

                   (b) The name, design and "look and feel" of the Branded
               Areas, the Brandings and the Links (collectively, the "Listings")
               will be determined by ICQ in its reasonable discretion in
               consultation with N2P. The Listings will properly convey the
               functionality of the ICQ IP Telephony Services.

                   (c) ICQ generally will provide to N2P branding, marking and
               promotion that are no less prominent, in terms of size,
               placement, appearance and the like, than those accorded to
               ****. In the event that ICQ begins to sell advertising inventory
               on **** "****" ****, ICQ shall provide N2P with
               an opportunity to bid on the purchase of a placement within such
               inventory.

                   (d) Subject to the other requirements of this Section 4.1.4
               and the other provisions of this Agreement, the foregoing will
               not preclude users from

[****] REPRESENTS MATERIAL, WHICH HAS BEEN REDACTED AND SEPARATELY FILED WITH
THE COMMISSION, PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT PURSUANT TO
RULE 406 UNDER THE SECURITIES ACT OF 1933, AS AMENDED.


                                       13
<PAGE>

                                                               EXECUTION VERSION

               linking to another such provider from the ICQ Service, provided
               that the link to such other provider is limited to a ****
                                           --------
               that is no more prominent than any similar reference to N2P.
               Nothing in this Agreement shall prevent ICQ from offering
               (whether through buttons, icons or otherwise) an AOL PC-to-PC
               communication function on the ICQ Service, subject to the other
               requirements of this Section 4.1.4.


        4.1.5  Promotion of ICQ Service by N2P; Promotion of ICQ IP Telephony
               --------------------------------------------------------------
               Services by ICQ.
               ---------------

                  (a)  N2P.  N2P shall promote the ICQ Service to its
                       ---
               customers and partners, and shall use reasonable efforts to
               encourage such customers and partners to adopt the ICQ Service as
               an integrated component of the IP Telephony products and services
               provided to such customers and partners by N2P, as and to the
               extent set forth in Exhibit E. ICQ shall assist N2P, as
               reasonably requested by N2P, in such promotional efforts.

                  (b)  ICQ.   ICQ shall use reasonable efforts to ****
                       ---
               as part of the products and services offered to their
               respective users. N2P shall assist ICQ, as reasonably requested
               by ICQ, in such promotional efforts.


     4.2   General Conditions to Distribution and Promotional Obligations.
           --------------------------------------------------------------
           Notwithstanding anything contained in this Section 4, ICQ shall have
           no obligation to promote a particular version of the ICQ IP Telephony
           Services, to distribute to ICQ Users a particular version of the ICQ
           IP Telephony Services or to provide any Listing therefor to the
           extent that and for so long as:

           (i)  ICQ has received notice (whether written or verbal) of, and
                reasonably believes, that the reproduction, use or distribution
                of such version of the ICQ IP Telephony Services in accordance
                with this Agreement infringes or misappropriates the
                intellectual property rights of any third party, provided that
                                                                 --------
                ICQ may not promote or offer access to any other IP Telephony
                product unless ICQ reasonably believes that it raises a lesser
                risk of infringement or misappropriation; or

          (ii)  An aspect of any such version of the ICQ IP Telephony Service
                exists, other than an acknowledged security risk that a
                corporation/user accepts by opening up holes in its firewall to
                enable use of any such ICQ IP Telephony Service (and other than
                security risks ordinarily associated with Web-based
                communications products), that could be exploited in a manner
                that ICQ reasonably believes (a) would expose ICQ Users to
                potential efforts to invade their privacy or damage or modify
                data, software or hardware in an unauthorized manner or (b)
                would otherwise result in meaningful and serious claims that any
                such ICQ IP Telephony Service presents a security risk to its
                users, provided that ICQ may not promote or offer access to any
                       --------
                other IP Telephony product unless ICQ reasonably believes that
                it raises a lesser security risk.

     4.3  Exclusive Offers/ICQ User Benefits.  N2P shall offer through the
          ----------------------------------
          ICQ Service on a regular and consistent basis (but no less than once
          per quarter) special offers comparable to those available through
          Additional N2P Channels (e.g., preferred rates to specific termination
          points to be offered periodically, raffle or sweepstakes conducted
          from time to time, etc.), which such special offers shall be
          exclusively available to ICQ Users (the "ICQ Exclusive Offers").  Each
          ICQ Exclusive Offer made available by N2P shall provide a substantial
          member benefit to ICQ Users, either by virtue of a meaningful price
          discount, product enhancement, unique service benefit or other special
          feature.  N2P will provide ICQ with reasonable prior notice of ICQ
          Exclusive Offers so that ICQ

**** CERTAIN PORTIONS OF THIS EXHIBIT HAVE BEEN OMITTED AND FILED SEPARATELY
WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR
CONFIDENTIAL TREATMENT UNDER RULE 406 OF THE SECURITIES ACT OF 1933, AS AMENDED.

                                       14
<PAGE>


                                                               EXECUTION VERSION

          can market the availability of such ICQ Exclusive Offers in the manner
          ICQ deems appropriate in its reasonable discretion; provided that ICQ
                                                              --------
          shall consult with N2P regarding the marketing of the ICQ Exclusive
          Offers.

     4.4  ICQ Search Keywords.  During the Initial Term, subject to the
          -------------------
          terms and conditions hereof, ICQ (in its sole discretion) may provide
          N2P with ICQ Search Keywords to be mutually agreed upon by the
          Parties.

5.   ICQ USER REGISTRATION AND INFORMATION
     -------------------------------------

     5.1  Ownership of Assets and Customer Relationships.  ICQ shall own
          ----------------------------------------------
          all tangible and intangible assets (and all personal and intellectual
          property) provided by ICQ in developing the ICQ IP Telephony Services
          (except as otherwise expressly set forth herein) and the Support Area,
          including all materials provided by ICQ to N2P for the purpose of
          branding the ICQ IP Telephony Service and the Support Area ("ICQ
          Branding Materials"), and the relationship with ICQ IP Telephony
          Users, including, without limitation, all aspects of such relationship
          specified in this Section 5.  ICQ shall own any and all rights in the
          call detail records generated in providing the ICQ IP Telephony
          Services which shall be treated as Confidential Information for
          purposes of this Agreement (collectively, the "Call Detail Records").
          ICQ hereby grants N2P a non-exclusive, non-transferable, worldwide,
          royalty-free license to use the Call Detail Records only to the extent
          necessary to provide the ICQ IP Telephony Services to be provided by
          N2P hereunder (including any related planning and development).  Such
          license shall continue through the end of the Term, but shall survive
          expiration of the Term with respect to the provision by N2P of the PTP
          Calling Card Service.

     5.2  ICQ User Relationship.
          ---------------------

               5.2.1  Registration Information.  In order to use the Surcharged
                      ------------------------
          ICQ IP Telephony Services, an ICQ User will be required to register
          for such ICQ IP Telephony Services.  The Parties shall determine by
          mutual agreement the terms and conditions of use to be agreed to by
          such ICQ Users (including, without limitation, with respect to any
          special access codes to be used by such ICQ Users in connection with
          the ICQ IP Telephony Services, provided, that neither Party shall
                                         --------
          unreasonably withhold such agreement with respect to the use of such
          special access codes), and ICQ shall determine both (i) the
          information to be collected from the ICQ Users as part of the
          registration process (provided that such information shall in any
                                --------
          event include information that N2P reasonably requests in connection
          with the provision of the ICQ IP Telephony Services, including,
          without limitation, any Personal Identification Numbers (PINs) for use
          by ICQ Users in connection with the ICQ IP Telephony Services) and
          (ii) any domain names, unique identifier numbers, e-mail addresses and
          passwords to be assigned and/or used by such ICQ Users in connection
          with such ICQ IP Telephony Services.  Notwithstanding the foregoing,
          it is the Parties' intention that ICQ Users initially shall not be
          required to register for, or provide any information in connection
          with the use of, the PC-to-PC Service.  Registration for the ICQ IP
          Telephony Services shall take place at the Support Area or at such
          other location as may be mutually agreed upon by the Parties.  ICQ
          shall use reasonable efforts to build into the end of the registration
          process for the ICQ Service (the "ICQ Registration Process") a sub-
          routine for the registration for the ICQ IP Telephony Services.
          Notwithstanding the foregoing, in the event that any ICQ Users shall
          not have registered for the Surcharged ICQ IP Telephone Services prior
          to attempting to use any such service, ICQ shall cause any such ICQ
          User to register for the Surcharged ICQ IP Telephony Services prior to
          the use thereof.  N2P shall determine the pricing for the Core Premium
          Services and other ICQ IP Telephony Services to be provided by N2P
          hereunder.  In addition, N2P shall handle the assignment of applicable
          phone numbers to ICQ Users (using the ICQ User unique identifier
          number as an identifier and provided that such phone numbers and
                                      --------
          special access codes (unless

                                       15
<PAGE>

                                                               EXECUTION VERSION

          otherwise agreed upon in writing by the Parties) shall be different
          from any phone numbers and access numbers used in connection with any
          N2P Services), and shall handle the billing and collection of any fees
          or other amounts to be charged to ICQ Users from time to time in
          connection with the ICQ IP Telephony Services (collectively, the "IPT
          Fees"); provided, however that, unless otherwise expressly consented
                  --------  -------
          to in writing by ICQ, N2P shall not directly contact or communicate
          with any ICQ IP Telephony Users other than in connection with the
          billing and collection of the IPT Fees, or in connection with
          maintenance and customer support for the ICQ IP Telephony Services;
          provided, further, that such communications shall be limited to
          --------  -------
          obtaining billing information, providing pricing information related
          to the ICQ IP Telephony Services and ensuring collection of the IPT
          Fees or providing maintenance or customer support, and shall not be
          used by N2P as a platform to sell, market, advertise or promote any
          products or services other than the ICQ IP Telephony Services.

               5.2.2  Billing Transition.  Notwithstanding the foregoing, at any
                      ------------------
          time during the Term and at ICQ's sole discretion, ICQ shall have the
          right to assume responsibility for the aforementioned billing and
          collection obligations with respect to the IPT Fees (collectively, the
          "Billing Transition"); provided, however, that (i) ICQ shall give N2P
                                 --------  -------
          reasonable advance notice of any such Billing Transition; (ii) the
          Billing Transition shall be subject to agreement of the Parties on
          arrangements (a) for N2P to receive the same portion of revenue from
          the ICQ IP Telephony Services as it would have received before the
          Billing Transition (and on procedures to verify the proper payment of
          such revenue), (b) for handling fraud, and (c) for the handling of the
          billing for the PTP Calling Card Service after the Initial Term, and
          (iii) ICQ shall be responsible for all costs and out-of-pocket
          expenses incurred by N2P in connection with such Billing Transition.
          In the event of such Billing Transition, N2P hereby agrees to provide
          ICQ with reasonable assistance (and to otherwise cooperate with ICQ),
          at ICQ's expense, regarding such Billing Transition, and following
          such Billing Transition, ICQ shall use commercially reasonable efforts
          to ensure that the billing services comply in all material respects
          with the standards set forth in Exhibits B and C of this Agreement.

     5.3  ICQ User Information and Solicitation.
          -------------------------------------

               5.3.1   Ownership of ICQ User Information.  ICQ shall own any and
                       ---------------------------------
          all information collected from ICQ Users in connection with the ICQ IP
          Telephony Services, including, without limitation, information
          collected during the registration processes for the ICQ Service and/or
          any ICQ IP Telephony Service, respectively, and information then or
          subsequently obtained from any use of the ICQ Service and/or any ICQ
          IP Telephony Services, including without limitation ****
          (collectively, "User Information").  All User Information shall be
          deemed Confidential Information of ICQ.  N2P agrees, both during and
          after the Term, not to (i) use any User Information for any purpose
          other than in connection with the operation of the ICQ IP Telephony
          Services or (ii) disclose any such information to any third party
          without the prior written consent of ICQ, which consent may be
          granted or withheld in ICQ's sole and absolute discretion;
          provided, however, that N2P may disclose User Information solely as
          necessary (and only to the extent necessary) to comply with applicable
          laws, regulations and government orders or requests; provided,
                                                               --------
          further, that N2P shall use all reasonable efforts to limit any such
          -------
          disclosure to the maximum extent possible and to provide ICQ with as
          much advance written notice of N2P's intended use or disclosure as is
          practicable. N2P agrees to comply with the ICQ Privacy Policy to the
          same extent as ICQ, as such policy exists on the Effective Date (i.e.,
          the ICQ Privacy Policy dated as of January 26, 1999), as the same may
          be modified and notified to N2P from time to time. N2P shall not sell,
          license, rent or otherwise transfer any ICQ User Information or any
          list of ICQ Users for any

[****] REPRESENTS MATERIAL, WHICH HAS BEEN REDACTED AND SEPARATELY FILED WITH
THE COMMISSION, PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT PURSUANT TO
RULE 406 UNDER THE SECURITIES ACT OF 1933, AS AMENDED.

                                       16
<PAGE>


                                                               EXECUTION VERSION

          purpose whatsoever, without ICQ's prior written consent.
          Notwithstanding the foregoing, N2P shall have the right to use User
          Information to the extent necessary to provide the PTP Calling Card
          Service to then-existing ICQ User customers following the expiration
          of the Initial Term, and ICQ shall provide N2P with the customer
          records and other information to the extent necessary for N2P to
          continue providing the PTP Calling Card Service to such customers for
          the **** period immediately following the expiration of the Initial
          Term, subject to Section 5.3.2 and 5.3.3 of this Agreement and
          prohibitions, if any, under applicable law.

               5.3.2  No Competitive Solicitation.  During the Term and for the
                      ---------------------------
          **** period following the expiration or termination of this
          Agreement (and without limiting any other provision of this Agreement,
          including Section 5.3.1), neither N2P nor its agents shall use the ICQ
          Service or the ICQ IP Telephony Services or information owned by ICQ
          or an ICQ Affiliate to (i) solicit third parties or ICQ Users when
          that solicitation is for the benefit of any entity (including N2P)
          which could reasonably be construed to be or to become in competition
          with ICQ, the ICQ Service or the ICQ IP Telephony Services, or (ii)
          promote any services or products which could reasonably be construed
          to be in competition with services or products provided by ICQ,
          through the ICQ Service or through the ICQ IP Telephony Services.
          Except as otherwise prohibited in this Section 5, nothing in this
          Section 5.3.2 shall be construed to prohibit N2P or its agents from
          soliciting or promoting the N2P Services to any third party, whether
          during the Term or thereafter, provided that, in connection with such
          solicitation or promotion, N2P complies with the terms of (a) Section
          9 (Exclusivity) during the Initial Term and (b) Section 13
          (Confidential Information) during the Term (and after the Term for the
          period set forth in such Section 13).  The Parties acknowledge that
          any incidental (i.e., de minimis) failure by N2P to comply with the
          terms of this provision shall not be deemed a material breach of this
          Agreement; provided, however, that N2P shall take appropriate steps to
                     --------  -------
          prevent any further failure to comply with the terms of this Section
          5.3.2.

               5.3.3  No Communication.  During the Term and for the ****
                      ----------------
          period following the expiration or termination of this Agreement
          (and without limiting any other provision of this Agreement, including
          Section 5.3.1), N2P agrees not to send any ICQ User any messages or
          communications on or through the Qualified ICQ Services for any
          commercial purpose, unless N2P has an Independent Business
          Relationship with such ICQ User. Any commercial e-mail communications
          (i.e., e-mail communications offering products or services) to ICQ
          Users on or through the ICQ Service or the ICQ IP Telephony Services
          which are otherwise permitted hereunder (i.e., permitted as exceptions
          to general prohibitions included in this Agreement) shall include a
          prominent and easy means to "opt-out" of receiving any future
          commercial e-mail communications from N2P. The Parties acknowledge
          that any incidental (i.e., de minimis) failure by N2P to comply with
          the terms of this provision shall not be deemed a material breach of
          this Agreement; provided, however, that N2P shall take appropriate
                          --------  -------
          steps to prevent any further failure to comply with the terms of this
          Section 5.3.3.

6.   TECHNICAL SUPPORT
     -----------------

          N2P shall provide all frontline technical and customer support to ICQ
          Users as set forth in Exhibit B, including, without limitation,
          technical and customer support for ICQ Users who have problems with,
          or questions concerning, the installation, use, operation or
          maintenance of the ICQ IP Telephony Service (collectively, the
          "Frontline Support").  The Parties acknowledge that N2P may provide
          such Frontline Support using e-mail and/or telephone support, at N2P's
          option.  N2P shall, at no cost to ICQ, provide to ICQ the back-end
          support regarding the ICQ IP Telephony Service specified on Exhibit D.
          During the Term, each Party will designate one (1) internal technical
          contact  (each such contact,


[****] REPRESENTS MATERIAL, WHICH HAS BEEN REDACTED AND SEPARATELY FILED WITH
THE COMMISSION, PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT PURSUANT TO
RULE 406 UNDER THE SECURITIES ACT OF 1933, AS AMENDED.

                                       17
<PAGE>


                                                               EXECUTION VERSION

          a "Technical Liaison") and will conduct technical communication
          activities as may be necessary for the optimization of the integration
          of the ICQ IP Telephony Services into the ICQ Service. ICQ will use
          commercially reasonable efforts to provide technical and marketing
          assistance, including facilitating the maintenance of regular
          communication channels between relevant personnel, for the purpose of
          assisting both Parties in abiding by their respective obligations
          under this Agreement. The initial Technical Liaison for N2P shall be
          **** and the initial Technical Liaison for ICQ shall be ****,
          unless otherwise designated from time to time by the Parties.
          Each Party may change its Technical Liaison from time to time, in its
          sole discretion. Unless otherwise agreed upon by the Parties, N2P
          shall not be obligated to provide support for any modifications or
          additions to the ICQ IP Telephony Services carried out by ICQ (or
          carried out for ICQ by a third party not contracted or subcontracted
          by or on behalf of N2P); provided, however, that where not required to
                                   --------  -------
          provide such support pursuant to the terms of this Section 6, N2P
          shall assist in the support of such work to the extent necessary for
          either Party to comply with its obligations under this Agreement.

7.   PAYMENT AND REVENUE PROVISIONS
     ------------------------------

     7.1  Guaranteed Payments; Refund.  In partial consideration for ICQ's
          ---------------------------
          marketing of the ICQ IP Telephony Services, N2P shall pay to ICQ a
          non-refundable guaranteed payment of Seven Million Five Hundred
          Thousand Dollars (US$7,500,000) as follows:  (i) Four Million Dollars
          (US$4,000,000) on the Effective Date, and (ii) Three Million Five
          Hundred Thousand Dollars (US$3,500,000) on the earlier of (a) the one
          (1) year anniversary of the Effective Date or (b) consummation of an
          initial public offering of shares of N2P under the Securities Act of
          1933, as amended.  In the event of any termination of this Agreement
          before expiration of the Initial Term in accordance with (i) Section
          16.2 due to a material breach by ICQ of this Agreement, (ii) Section
          16.3 due to a Change of Control of ICQ by a N2P Competitor or a Parent
          Company Competitor or (iii) Section 16.5 due to the occurrence of a
          Regulated Entity Event, ICQ shall refund to N2P the pro rata portion
                                                              --- ----
          (based on a four (4) year term) of any guaranteed payments made by N2P
          prior to the date of such early termination (e.g., if such termination
          occurs on the **** anniversary of the Effective Date, and N2P has paid
          ICQ **** (US$****) in guaranteed payments as required by the terms of
          this Agreement, ICQ shall refund to N2P **** (****%) of such
          guaranteed payments, ****. In the event of any termination of this
          Agreement before the expiration of the Initial Term in accordance with
          Section 16.6(i)(c) or Section 16.6(i)(d), then ICQ shall refund to N2P
          **** of the pro rata portion (based on a four (4) year term) of any
                      --- ----
          guaranteed payments made by N2P prior to the date of such early
          termination. In partial consideration for such guaranteed payments,
          ICQ shall provide N2P during the Initial Term with promotional
          placements (on areas of the ICQ Service to be determined by ICQ in its
          reasonable discretion as further set forth in Section 4.1.4) with a
          value of **** (based on average amounts actually charged by ICQ for
          comparable Advertisements or, if unavailable, amounts set forth on
          ICQ's advertising rate card).

     7.2  Net Advertising Revenue for IP Telephony Services.

               7.2.1  Advertising Sales. ICQ shall have the right to license or
                      -----------------
          sell promotions, advertisements, links, sponsorships, pointers or
          similar services or rights ("Advertisements") through the ICQ Service,
          subject to ICQ's then-applicable advertising policies.


[****] REPRESENTS MATERIAL, WHICH HAS BEEN REDACTED AND SEPARATELY FILED WITH
THE COMMISSION, PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT PURSUANT TO
RULE 406 UNDER THE SECURITIES ACT OF 1933, AS AMENDED.

                                       18
<PAGE>

                                                               EXECUTION VERSION

               7.2.2  Revenue Sharing.
                      ---------------

                      (a)       Net Advertising Revenue.  As partial
                                -----------------------
               consideration for its marketing efforts hereunder, ICQ shall
               retain **** percent (****%) of the Net Advertising Revenue. ICQ
               shall pay N2P, within **** following the end of each quarter
               during the Term, the remaining **** percent (****%) of the Net
               Advertising Revenue that is actually collected by ICQ or any
               Affiliate of ICQ (collectively, the "Advertising Revenue Share").

                      (b)       Net Button Advertising Revenue.  In the event
                                ------------------------------
               that ICQ sells (which such decision to sell shall be in ICQ's
               sole discretion) any buttons that appear on the ICQ IP Telephony
               client (the "Special Buttons"), (i) N2P shall receive (1) ****
               percent (****%) of the Net Button Advertising Revenue generated
               from the sale (without N2P participation or support) of any such
               Special Button or (2) **** percent (****%) of the Net Button
               Advertising Revenue generated from the sale (with N2P
               participation or support) of any such Special Button, and (ii)
               ICQ shall retain the remainder of such Net Button Advertising
               Revenue (clauses (i) and (ii) above, collectively, the "Net
               Button Advertising Revenue Share"). Notwithstanding the
               foregoing, in no event shall the total portion of the Net Button
               Advertising Revenue received by N2P during the Term exceed ****
               Dollars (US$****) (i.e., after the receipt by N2P of US$**** in
               Net Button Advertising Revenue, ICQ shall retain **** (****%) of
               such Net Button Advertising Revenue). In the event that ICQ
               utilizes such Special Buttons to promote any ICQ or other
               commercial products or services, ICQ shall utilize a portion of
               such Special Buttons (i.e., at least one such Special Button) to
               promote the ICQ IP Telephony Services.

               7.2.3  Definition of Net Advertising Revenue.  For purposes of
                      -------------------------------------
          this Agreement, "Net Advertising Revenue" shall mean, for any calendar
          quarter, (i) the gross revenue (including cash and the value of any
          non-cash consideration) received by ICQ, or any Affiliate of ICQ, from
          Advertisements in (a) the Support Area, (b) other areas within the ICQ
          Service that principally list the ICQ IP Telephony Services, or (c)
          the ICQ IP Telephony Software or areas within the ICQ Client that
          principally list the ICQ IP Telephony Services (collectively, the
          "Designated Advertising Areas"), less (ii) the actual commissions paid
          to third party agencies by ICQ in connection with the placement of
          such Advertisements (or, if no such commissions were incurred, ****
          percent (****%) of the gross revenues received by ICQ for such
          Advertisements).  If Advertisements in the Designated Advertising
          Areas are sold or otherwise made available to a party that also
          purchases or obtains Advertisements through one or more other areas or
          media of ICQ or an Affiliate (collectively, a "Combined Sale"), the
          revenue from the Combined Sale shall be allocated pro rata between
                                                            --- ----
          such Designated Advertising Areas and such other areas or media (based
          on list prices for such Designated Advertising Areas and other areas
          or media).  For the avoidance of doubt, "Net Advertising Revenues"
          shall not include Net Button Advertising Revenues.

               7.2.4.  Ownership of Advertising.  The right of N2P to
                       ------------------------
          participate in the Net Advertising Revenue pursuant to the provisions
          of this Section 7.2 shall in no way create any ownership interest in
          N2P with respect to ICQ advertising inventory.  ICQ owns all right,
          title and interest in and to the Advertisements and promotional spaces
          within the ICQ Service, including the Support Area and the ICQ Client,
          and ICQ has the sole authority to market and sell such Advertisements;
          provided, however, that ICQ agrees that, during the Initial Term
          --------  -------
          within the Designated Advertising Areas, ICQ shall not include any
          Advertisements for (or sell any advertising inventory to) N2P
          Competitors with respect to


[****] REPRESENTS MATERIAL, WHICH HAS BEEN REDACTED AND SEPARATELY FILED WITH
THE COMMISSION, PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT PURSUANT TO
RULE 406 UNDER THE SECURITIES ACT OF 1933, AS AMENDED.

                                       19
<PAGE>


                                                               EXECUTION VERSION

          (i) the Core Premium Services (to the extent that N2P enjoys
          exclusivity with respect thereto under this Agreement) and (ii) any
          Optional Service(s) or Expanded Service(s) which the Parties mutually
          agree from time to time shall be exclusive to N2P). Further, ICQ shall
          be responsible for all obligations, liabilities and duties under any
          and all agreements that ICQ has with third parties and otherwise with
          regard to such Advertisements, including serving such advertisements,
          subject to Section 15 of this Agreement.

     7.3  Transaction Revenues Sharing Arrangement.
          ----------------------------------------

               7.3.1  Revenue Threshold.  If at any time (i) during Year One the
                      -----------------
          amount of Transaction Revenues received by N2P during such year
          exceeds **** Dollars (US$****) or (ii) during each of Years Two
          through Four of this Agreement, the amount of the Transaction
          Revenues received by N2P exceed **** Dollars (US$****) (for each such
          Year, the "Revenue Threshold"), then N2P will pay ICQ, in partial
          consideration for ICQ's marketing and distribution efforts hereunder,
          the Revenue Share with respect to the incremental Transaction Revenues
          received during any such Year above the Revenue Threshold for such
          Year (the "Incremental Transaction Revenues"). N2P will pay all of the
          foregoing amounts within thirty (30) days following the end of the
          Year in which the applicable Transaction Revenues were received. At
          the end of each such Year, the calculation of Transaction Revenues for
          purposes of this Section 7.3.1 shall recommence. N2P shall have the
          right to collect and retain all Transaction Revenues other than the
          Revenue Share paid to or retained by ICQ. To the extent mutually
          agreed upon by the Parties in writing in connection with any Billing
          Transition, ICQ shall be responsible (following any such Billing
          Transition) for calculating the Revenue Share and for paying N2P its
          portion of such Revenue Share as contemplated by this Section 7.3.1.

               7.3.2  Revenue Share.  The "Revenue Share" shall mean the amounts
                      -------------
          to be paid to ICQ (in each case, determined as a percentage of
          Incremental Transaction Revenues) set forth on Exhibit H hereto.

               7.3.3  **** Users.  To the extent that N2P is required to
                      --------------
          share revenue with ****(pursuant to agreements in full force and
          effect on the Effective Date) for transaction revenues generated with
          respect to the Core Premium Services, any Transaction Revenue received
          by N2P hereunder from any **** user with respect to the Core Premium
          Services shall not constitute Transaction Revenues for purposes of
          this Section.

     7.4  No Other Revenue Sharing.  Except as expressly provided in this
          ------------------------
          Section 7 and on Exhibit H, neither Party shall be entitled to any
          revenues derived from, or related to, the activities of the other
          Party.

     7.5  Alternative Revenue Streams.  In the event that N2P receives or
          ---------------------------
          desires to receive (directly or indirectly) any compensation in
          connection with the ICQ Service from the sale of any Products other
          than the ICQ IP Telephony Services or as otherwise agreed to by the
          Parties (an "Alternative Revenue Stream"), N2P will promptly inform
          ICQ in writing, and the Parties will negotiate in good faith regarding
          whether N2P will be allowed to market the Products producing such
          Alternative Revenue Stream (the "Alternative Products") through the
          ICQ Service, and if so, the equitable portion of revenues from such
          Alternative Revenue Stream (if applicable) that will be shared with
          ICQ.


[****] REPRESENTS MATERIAL, WHICH HAS BEEN REDACTED AND SEPARATELY FILED WITH
THE COMMISSION, PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT PURSUANT TO
RULE 406 UNDER THE SECURITIES ACT OF 1933, AS AMENDED.

                                       20
<PAGE>


                                                               EXECUTION VERSION

     7.6  Reports and Payments.  Each Party (the "Paying Party") shall comply
          --------------------
          with the following requirements in connection with its payment
          obligations to the other Party (the "Payee Party") under this
          Agreement: Within thirty (30) days following the end of each payment
          period, the Paying Party shall provide the Payee Party with a report
          that contains information detailing the amount payable for such
          payment period. Such report shall, with reasonable detail, explain the
          basis upon which such payment has been determined and shall be
          accompanied by payment in full of all amounts indicated on such report
          as due for such period. Each such report shall constitute Confidential
          Information of the Paying Party. Without limiting the generality of
          the foregoing:

                7.6.1   Reports on Transaction Revenues.  N2P will provide
                        -------------------------------
          ICQ with a report in a mutually agreed-upon format, detailing the
          following activity in such period (and any other information mutually
          agreed upon by the Parties as required for measuring Transaction
          Revenues): (i) summary sales information (e.g., total number of
          orders, average sales per customer and per order); and (ii) detailed
          sales information to be agreed upon by the Parties (collectively,
          "Sales Reports"). ICQ will be entitled to use the Sales Reports only
          in its internal business operations, subject to the terms of this
          Agreement. The report will also contain information which supports the
          payment based on Transaction Revenues, including information
          identifying gross Transaction Revenues and all items deducted or
          excluded from gross Transaction Revenues to produce Transaction
          Revenues, including, without limitation, charge-backs and credits for
          returned or canceled goods or services (and, where reasonably
          practicable, an explanation in general of the types of reasons
          therefor (e.g., bad credit card information, poor customer service,
          etc.)).

               7.6.2  Reports on Advertising Revenue Share.  ICQ will provide
                      ------------------------------------
          N2P with a quarterly report in a mutually agreed-upon format,
          detailing the following in such quarter (and any other information
          mutually agreed upon by the Parties as required for measuring
          Advertising Revenues):  (i) aggregate cash, plus the fair market value
          (and basis for determining the fair market value) of any non-cash
          consideration received (such as barter advertising), received by ICQ
          or any ICQ Affiliate from Advertisements in the Designated Advertising
          Areas, (ii) to the extent applicable, the agency fees incurred in
          connection with the placement of such Advertisements, and (iii) if
          applicable, the basis for allocating revenue from Combined Sales to
          Advertisements in the Designated Advertising Areas.

     7.7  Late Payments; Wired Payments.  All amounts owed hereunder not paid
          -----------------------------
          when due and payable will bear interest from the date such amounts are
          due and payable at the prime rate in effect at such time.  All
          payments required to be paid to ICQ hereunder will be paid in
          immediately available, non-refundable U.S. funds wired to ****.  All
          payments required to be paid to N2P hereunder will be paid in
          immediately available, non-refundable U.S. funds wired to an account
          to be designated by N2P  (within thirty (30) days following the
          Effective Date) in a written notification to ICQ.

     7.8  Audit Rights.  Each Party (as Paying Party) will maintain complete,
          ------------
          clear and accurate records of the information required to determine
          the amounts of payments made hereunder.  For the sole purpose of
          ensuring compliance with the payment obligations of this Agreement,
          either Party (as Payee Party) will have the right to request that an
          independent certified accountant selected by the Parties (and which
          accountant enters into a confidentiality agreement mutually agreed to
          by the Parties) conduct (no more than twice per calendar year of this
          Agreement) a reasonable and necessary inspection of portions of such
          books and records as are necessary to verify the correctness of the


[****] REPRESENTS MATERIAL, WHICH HAS BEEN REDACTED AND SEPARATELY FILED WITH
THE COMMISSION, PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT PURSUANT TO
RULE 406 UNDER THE SECURITIES ACT OF 1933, AS AMENDED.


                                       21
<PAGE>


                                                               EXECUTION VERSION

          payments made hereunder.  Any such audit may be conducted after twenty
          (20) business days prior written notice to the Paying Party.  The
          Payee Party shall bear the expense of any audit conducted pursuant to
          this Section 7.8 unless such audit shows an error in the Payee Party's
          favor amounting to a deficiency in excess of five percent (5%) of the
          actual amounts payable to the Payee Party hereunder, in which event
          the Paying Party shall bear the reasonable costs and expenses incurred
          in connection with such audit.  The Paying Party shall pay the Payee
          Party the amount of any deficiency discovered by the Payee Party
          within thirty (30) days after receipt of notice thereof from the Payee
          Party, except to the extent disputed in good faith by the Paying
          Party.

     7.9  Taxes.  Each Party will collect and pay, and indemnify and hold
          -----
          harmless the other Party from, any sales, use, excise, import or
          export value added or similar tax or duty required to be collected and
          paid by such Party, including any penalties and interest, as well as
          any costs associated with the collection or withholding thereof,
          including attorneys' fees (collectively, the "Taxes").

     7.10 Fraudulent Transactions.  To the extent permitted by applicable law,
          -----------------------
          N2P will (i) provide ICQ with prompt notice of any fraudulent order (a
          "Fraudulent Order"), including the date, screen name or e-mail address
          and amount associated with such order, promptly following N2P
          obtaining knowledge that the order is, in fact, fraudulent and (ii) as
          promptly as possible following the occurrence of any such Fraudulent
          Order (but in no event later than one (1) month after the occurrence
          thereof), provide ICQ with a report regarding any such order and the
          steps taken by N2P with respect thereto.

     7.11 Most Favored Customer.  N2P represents that the terms and conditions
          ---------------------
          accorded to ICQ under this Agreement (including any consideration
          provided to ICQ and any of its Affiliates in connection herewith) are,
          taken as a whole, no less favorable than the terms and conditions
          accorded to any (i) ICQ Competitor, (ii) AOL Competitor or (iii)
          **** (a "Regulated Telecommunications Service Provider") with respect
          to the N2P Services provided to ICQ hereunder. In addition, if during
          the Initial Term, N2P enters into an agreement with an ICQ Competitor,
          AOL Competitor or Regulated Telecommunications Service Provider with
          respect to the N2P Services provided hereunder that accords to such
          ICQ Competitor, AOL Competitor or Regulated Telecommunications Service
          Provider terms and conditions that, taken as a whole, are more
          favorable than those accorded to ICQ under this Agreement (including
          any such consideration provided to ICQ and any of its Affiliates in
          connection herewith), then N2P shall adjust the terms and conditions
          of this Agreement so that ICQ obtains terms and conditions (including
          any such consideration provided to ICQ and any of its Affiliates in
          connection herewith) that, taken as a whole, are no less favorable
          than those accorded to such ICQ Competitor, AOL Competitor or
          Regulated Telecommunications Service Provider (as the case may be)
          (including any consideration provided to such ICQ Competitor, AOL
          Competitor or Regulated Telecommunications Service Provider (as the
          case may be) and any Affiliates thereof).


8.   STOCK WARRANTS
     --------------

     Attached hereto as Exhibit G is a form of common stock warrant to be
     executed by N2P on behalf of ICQ, or, if ICQ so directs N2P in writing, any
     parent, subsidiary or affiliate entity of ICQ (including AOL.). In the
     event that ICQ directs N2P to issue such warrant to such other entity, the
     Parties agree that such entity shall have the right to enforce the terms of
     such warrant against N2P.

[****] REPRESENTS MATERIAL, WHICH HAS BEEN REDACTED AND SEPARATELY FILED WITH
THE COMMISSION, PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT PURSUANT TO
RULE 406 UNDER THE SECURITIES ACT OF 1933, AS AMENDED.

                                       22
<PAGE>


                                                               EXECUTION VERSION

9.   EXCLUSIVITY
     -----------

     9.1  Scope.
          -----

               9.1.1   N2P Exclusivity.  Except to the extent that ICQ is
                       ---------------
          expressly relieved of its exclusivity obligations under this
          Agreement, N2P shall be the exclusive provider of the Core Premium
          Services on the ICQ Service during the Initial Term (the "N2P
          Exclusivity"); provided, however, that ICQ shall be free to enter into
                         --------  -------
          agreements with third parties (including, without limitation, with any
          N2P Competitor) for the use, integration, offering and/or promotion of
          IP Telephony services (and any other telecommunications services or
          products) other than the Core Premium Services within the ICQ Service.
          Provided that N2P retains exclusivity hereunder with respect to any
          Core Premium Service, ICQ will not promote on the ICQ Service any IP
          Telephony service which is comparable to such Core Premium Service.
          Notwithstanding the foregoing, unless otherwise agreed by the Parties,
          the N2P Exclusivity shall not extend to any country outside the United
          States other than the Collective International Gateways.  The Parties
          hereby acknowledge and agree that the N2P Exclusivity may be
          terminated with respect to particular ICQ IP Telephony Services (or
          with respect to particular Collective International Gateways) in
          accordance with the terms of this Agreement.

               9.1.2  ICQ Exclusivity.  N2P agrees that N2P shall not (i)
                      ---------------
          authorize the public release before **** of a product in which N2P or
          any third party has integrated (e.g., **** etc.) the N2P IP Telephony
          Software (or any portion thereof) into or with an instant messaging or
          similar online, real time messaging product of **** or **** or (ii)
          announce or authorize the announcement of the release (whether planned
          or actual) of such an integrated product of an **** or an **** (or
          announce or authorize the announcement of the distribution of the N2P
          IP Telephony Software by or through **** or **** where the
          announcement refers to any instant messaging or similar online real
          time communications service (e.g., **** etc.))) before the earlier of
          **** or the date for public release of each of the initial versions of
          the Core Premium Services ("ICQ Exclusivity"). During the Initial
          Term, N2P will promote ICQ as a preferred integrated instant messaging
          service and product; provided, however, that during the Initial Term,
                               --------  -------
          N2P shall not promote an instant messaging service or similar online,
          real time messaging product of an ICQ Competitor or an AOL Competitor
          more prominently than ICQ. Notwithstanding the foregoing, the Parties
          hereby acknowledge that N2P shall have the right to offer its PC-to-PC
          voice-enabled chat service to any third party following the earlier of
          (a) June 5, 2000 or (b) three (3) months following the date on which
          ICQ integrates such voice-enabling chat service into the ICQ Service.

     9.2  Optional Services.  With respect to all Optional Services and other IP
          -----------------
          Telephony services not expressly contemplated by this Agreement, ICQ
          shall offer N2P a **** (not to exceed **** (****)) with respect to the
          offering of such additional services through the ICQ Service. In the
          event that the Parties cannot agree, within such time period, to the
          terms and conditions regarding the provision of any such additional
          service to ICQ Users through the ICQ Service, ICQ shall have the right
          to offer such additional service(s) to ICQ Users through any third
          party (including, without limitation, any N2P Competitor).

     9.3  Termination of Exclusivity.  In the event that ICQ is entitled to
          --------------------------
          relief from the N2P Exclusivity as to a particular Core Premium
          Service and/or country in accordance with the express terms and
          conditions of this Agreement, then only the N2P Exclusivity with
          respect to such Core Premium Service and/or country (as the case may
          be and subject to Section 16 hereof) shall terminate.


[****] REPRESENTS MATERIAL, WHICH HAS BEEN REDACTED AND SEPARATELY FILED WITH
THE COMMISSION, PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT PURSUANT TO
RULE 406 UNDER THE SECURITIES ACT OF 1933, AS AMENDED.

                                       23
<PAGE>

                                                               EXECUTION VERSION

     9.4  Exception to Exclusivity.  For the avoidance of doubt, the Parties
          ------------------------
          acknowledge that the N2P Exclusivity does not preclude the listing of
          N2P Competitors or any AOL PC-to-PC communication function in any
          whites pages, yellow pages or other online search or directory
          service, subject to Section 4.1.4 and Section 7.2.4.

10.       LICENSE FROM N2P
          ----------------

     10.1 License.
          -------

               10.1.1  Software License.  Subject to all the terms and
                       ----------------
          conditions of this Agreement, N2P hereby grants to ICQ a worldwide,
          non-exclusive, non-transferable, royalty-free license for the Term to
          use, reproduce, distribute directly and indirectly, transmit, display,
          perform and sublicense (i.e., grant to end-users the right to use) and
          adapt the ICQ IP Telephony Software, including any and all components
          contained in the ICQ IP Telephony Software necessary to effectuate the
          provision of the ICQ IP Telephony Services to ICQ, and the use by end-
          users of the ICQ IP Telephony Services, in each case, in object code
          form only (except as provided in Section 10.2) in accordance with the
          terms of this Agreement.  To the extent reasonably requested by ICQ,
          N2P shall deliver the ICQ IP Telephony Software electronically to ICQ.

               10.1.2  Purpose of License.  The foregoing license is expressly
                       ------------------
          intended to permit (and limited to permitting) ICQ to effectuate all
          of its rights and conduct all of the business expressly contemplated
          hereunder, including distributing the ICQ IP Telephony Services
          pursuant to the terms and conditions of this Agreement.  Except as set
          forth in Sections 10.2 and 12.1 or as otherwise set forth in this
          Agreement (including, without limitation, with respect to the ICQ
          GUI), ICQ acknowledges and agrees that N2P and its licensors retain
          all rights, title and interest in and to the ICQ IP Telephony Software
          in both object and source code forms.  ICQ shall not have any right
          under any circumstances, or authorize any third party (which, for
          avoidance of doubt, includes any Affiliate of ICQ), to (i) **** the
          ICQ IP Telephony Software (other than adaptation in accordance with
          Section 10.1.1 or as otherwise authorized by the Source Code Escrow
          Agreement or license described in Section 10.2), (ii) **** or
          otherwise **** the source code for or underlying algorithms, processes
          or methods of the ICQ IP Telephony Software that is provided in object
          code form, or (iii) **** or **** the ICQ IP Telephony Software to any
          third party (other than as expressly provided in this Agreement). All
          copies of the ICQ IP Telephony Software made hereunder shall include
          all proprietary notices included on the copy provided by N2P, and ICQ
          shall not remove, deface or obscure or authorize to be removed,
          defaced or obscured any of N2P's or its licensors' proprietary rights
          notices on or in the ICQ IP Telephony Software or on output generated
          by the software; provided that the placement of such notices, if any,
          in the ICQ IP Telephony Software that are visible in the user
          interface of such software shall be subject to ICQ's prior written
          approval, which approval will not be unreasonably withheld. ICQ agrees
          that any and all copies of the ICQ IP Telephony Software distributed
          to third parties shall be pursuant to binding license agreements no
          less restrictive or protective of N2P's rights than this Section 10.1.
          ICQ agrees that any material violation of this Section 10.1 by ICQ
          that is not cured by ICQ within thirty (30) days shall constitute a
          material breach of this Agreement. N2P agrees to provide the ICQ IP
          Telephony Software in object code form, including all required
          Documentation, to ICQ as and when needed for ICQ to exercise its
          rights under this Agreement. For the avoidance of doubt, the Parties
          acknowledge that the host components of the ICQ IP Telephony Software,
          if any, are for use only by ICQ and may not be provided to any third
          party.

[****] REPRESENTS MATERIAL, WHICH HAS BEEN REDACTED AND SEPARATELY FILED WITH
THE COMMISSION, PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT PURSUANT TO
RULE 406 UNDER THE SECURITIES ACT OF 1933, AS AMENDED.

                                       24
<PAGE>


                                                               EXECUTION VERSION

     10.2 Source Code License and Escrow.
          ------------------------------

               10.2.1  Escrow Agreement.  N2P and ICQ will enter into an escrow
                       ----------------
          agreement (the "Source Code Escrow Agreement"), containing terms and
          conditions subject to the mutual agreement of the Parties, for the
          limited use by ICQ of the ICQ IP Telephony Softwa