Document:

Exhibit 10.4

                            DATA SERVICES AGREEMENT

                                                   Agreement No. _______________

      This Data Services Agreement (this "Agreement") is made this 19th day of
      March, 2001, by and between Williams Vyvx Services, a business unit of
      Williams Communications, Inc., a Delaware corporation ("Seller"), with its
      principal place of business at One Williams Center, 27th Floor, Tulsa,
      Oklahoma 74172, and iBEAM Broadcasting Corporation ("Customer"), with its
      principal place of business at 645 Almanor Ave., Suite 100, Sunnyvale, CA
      94086, for the provision of telecommunications services, subject to this
      Agreement and as set forth in this Agreement.

1.0 Exhibits

Exhibit I -     Williams Vyvx Services Pricing Schedule

Exhibit II -    Williams Vyvx Services Technical Specifications

Exhibit III -   Sample Service Order

Exhibit IV -    Williams Vyvx Services Troubleshooting Procedures

2.0 Description of Services Customer may order from Seller telecommunications
transmission services ("Services"), the terms and conditions of which are set
forth in this Agreement. The current Williams Vyvx Services Pricing Schedule is
attached to this Agreement and incorporated herein by reference. All Services,
Local Access Services and Ancillary Services, as defined in Section 5.0 and 6.0,
are subject to availability. The terms "Services" and "Ancillary Services" in
this Agreement refer only to such transport telecommunications services between
two locations traversing Seller's owned and operated network both end points of
which originate or terminate at a Seller point of presence ("On-Net"), unless
otherwise specifically noted herein. Any off-net service arranged for Customer
by Seller is on an individual case basis and the terms and conditions governing
the arrangement of such off-net services shall be those of the third party
provider of such services. The general provisions of this Agreement, including
limitation of liability and indemnity, are applicable to Seller's arrangement of
such off-net, third party provided services.

      2.1 Description of Private Line Service: Williams Vyvx Services Private
      Line Service (the "Private Line Service") provides domestic DS-1, DS-3 and
      optical SONET (OC-N) circuits which are specifically dedicated to
      Customer's use between two (2) points specified by the parties in a
      Service Order and meeting the technical requirements as defined in the
      "Williams Vyvx Services Technical Specifications for Private Line Service"
      attached hereto as Exhibit II.

      2.2 Description of ATM Service: Williams Vyvx Services Asynchronous
      Transfer Mode Service (the "ATM Service") is technology that provides
      integration of disparate networks onto a single communications
      infrastructure. ATM technology takes voice, data and video packets and
      divides them into equally sized, 53-byte cells and transmits them over
      Seller's ATM network. Seller's ATM Service is designed for two (2) primary
      applications. These applications include ATM transport and backbone
      connectivity. ATM transport provides multimedia and video transmission.
      Multimedia transmission is suited for transporting voice, data and video
      while video transmission is best designed for point-to-point video
      services. Backbone connectivity provides for

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      the interconnection of local area networks ("LAN(s)") as well as
      interconnection of existing network access points ("NAP(s)") or private
      peering backbones.

      2.3 Description of Frame Relay Service: Williams Frame Relay Service is a
      technology that allows commercial end-users to use a network of shared
      private lines to send and receive data from geographically distant
      locations. Frame Relay can be defined as packet-switched, multiplexed data
      networking technology supporting connectivity between user equipment, such
      as routers, and a carrier's frame relay network equipment.

3.0 Effective Date and Term

This Agreement shall become effective on April 7, 2000 ("Effective Date") and
shall continue for a term of one (1) year after the date on which Seller signs
the Agreement (the "Term"). Each Service Order placed under this Agreement shall
have its own term, as indicated on such Service Order. This Agreement shall
automatically renew for successive one-year periods (the "Renewal Term(s)")
unless canceled by either party by giving written notice of such cancellation
not less than sixty (60) days before the end of the current Term, or any Renewal
Term. Unless Customer is in default, or if covered under Sections 8.2 and 8.4 of
this Agreement, any Service being provided at the time of termination shall
continue until the natural end of such Service as specified in the applicable
Service Order upon the terms and conditions of this Agreement; provided,
however, that Customer may not order any new Service until Customer and Seller
have entered into a new agreement or mutually agreed in writing to extend this
Agreement. The charges for any Services, Local Access Services or Ancillary
Services during any such extension shall be the then current Seller charges.

4.0 Service Orders and Provisioning of Circuits

      4.1 Services requested by Customer hereunder shall be requested on
      Seller's Service Order forms in effect from time to time or on Customer's
      forms accepted in writing by Seller ("Service Order(s)"). A Sample Service
      Order form is attached hereto and incorporated as Exhibit III. Each
      Service Order shall reference this Agreement and its respective Agreement
      number. Seller reserves the right not to accept a Service Order under this
      Agreement at any time.

      4.2 When a Service Order is placed, the Customer will indicate a requested
      start date (the "Requested Start Date") for the Service, the desired term
      of the Service, the specific city pairs, the applicable bandwidth and any
      other information necessary for Seller to provide the Service. .
      Customer's Requested Start Date will be the Requested Start Date passed on
      to the Local Exchange Carrier and the basis for any adjustments set forth
      below. Seller will make reasonable efforts to meet Customer's Requested
      Start Date. In the event that a Requested Start Date is altered,
      Customer's Requested Start Date will be changed to reflect the number of
      days of delay or advance, as appropriate (the "Actual Start Date").
      Changes to Customer's Requested Start Date are further limited pursuant to
      Sections 4.5 and 4.6.

      4.3 This Agreement shall apply to all Services, Local Access Services and
      Ancillary Services provided by Seller to the Customer whether pursuant to
      a Service Order or otherwise.

      4.4 Seller's standard service implementation interval for Services
      provided on Seller's owned and operated network is forty-five (45) days
      from acceptance of a Service Order by Seller's Customer Care department.
      Such acceptance shall be indicated by the signature of a representative of
      such department on the Service Order. The standard service implementation
      interval for Services provided by a third party and either partially or
      wholly off of Seller's owned

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      and operated network shall be determined on an individual case basis.
      Seller shall make reasonable efforts to provide Services within its
      standard service implementation interval or on Customer's Requested Start
      Date. Failure of Seller to deliver by such date shall not constitute a
      default under this Agreement and Seller shall not be liable to pay to
      Customer any penalties or damages for Seller's failure to meet such
      standard service implementation intervals. Seller will make reasonable
      efforts to coordinate Actual Start Date with Customer Requested Start Date
      and will act on behalf of Customer with the Local Access Providers during
      installation and testing to ensure circuit is fully operational, meets
      technical specifications and to delay acceptance of circuits as may be
      requested by Customer on an individual case basis subject to the policies
      of the applicable Local Exchange Carrier.

      4.5 Seller will issue notice to Customer of the Actual Start Date which is
      the Planned Test Date ("PTD") for each individual Service Order. The
      Actual Start Date is the date Seller will accept services from the Local
      Exchange Carrier ("LEC") on behalf of the Customer and commence testing
      and billing for Local Access Services. Customer may request a one-time
      delay or change in the Actual Start Date or Requested Start Date of a
      Service Order provided that (i) it provides the Seller a written delay
      request no later than three (3) business days prior to the Planned Test
      Date or Requested Start Date, as the case may be, (ii) the aggregate
      number of the days requested does not exceed thirty (30) calendar days
      from the Service Order's original Requested Start Date, and (iii) it is
      consistent with the policies of and approved by the LEC. At the expiration
      of such thirty (30) day period, the Customer may no longer delay the
      Actual Start Date of such Order and Seller may begin billing as of such
      date.

      4.6 Services shall begin on the date Seller issues notice that Service is
      available (the "Start of Service Notice" or "SOSN"), indicating that the
      Service has been tested by Seller in accordance with the Technical
      Specifications set forth in Exhibit II attached hereto and that the
      Service meets or exceeds those Technical Specifications (the "Actual Start
      Date"). If Customer fails to give written notice that the Service is in
      material non-compliance with the applicable Technical Specifications
      within three (3) business days after Seller issues the SOSN, Customer
      shall be deemed to have accepted such Service and Seller shall begin
      billing for the Service as of the Actual Start Date. All billing and
      acceptance of local loops ordered on behalf of Customer will start on the
      Actual Start Date. Customer will reimburse Seller for all Local Access
      Charges and shall be liable for any termination charges from Local Access
      Providers once accepted by Seller on Customer's behalf. Billing for
      Circuit Port and PVC charges will be delayed for ten (10) calendar days
      from the Actual Start Date provided Customer is not utilizing the circuit
      for other than testing purposes.

      4.7 Any conflicting, different or additional terms and conditions
      contained in Customer's acknowledgement or Service Order or elsewhere are
      objected to by Seller and shall not constitute part of this Agreement
      unless mutually agreed to in writing by both parties. No action by Seller
      (including, without limitation, provision of Services, Local Access
      Services or Ancillary Services to Customer pursuant to such Service Order)
      shall be construed as binding or estopping Seller with respect to such
      term or condition.

      4.8 Once the Actual Start Date has passed, Customer must pay for the
      Services, Local Access Services or Ancillary Services as indicated on the
      Service Order through the term indicated on such Service Order, regardless
      of whether Customer is actually using the Services.

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5.0 Local Access Services

      5.1 Unless the parties otherwise agree pursuant to Section 5.3 below,
      Seller shall obtain "Local Access Services" for Customer, which are
      defined as the telecommunications facilities connecting a
      Customer-designated termination point to a Seller Point of Presence
      ("POP"). Customer shall execute a Letter of Agency, on such form as
      provided by Seller, authorizing Seller to interact directly with the Local
      Access provider(s) to obtain the Local Access Services. Customer shall
      request all Local Access Services in writing to Seller. Customer shall be
      responsible for all charges, including without limitation, monthly
      charges, usage charges, installation charges, non-recurring charges, or
      applicable termination/cancellation liabilities, of the Local Access
      provider(s) for the length of the term of the Service Order only. Seller
      shall use reasonable efforts to negotiate the reduction or elimination of
      any termination liability or cancellation charges with the applicable
      Local Access provider.

      5.2 In obtaining Local Access Services, Seller shall be responsible for
      provisioning and the initial testing of an interconnection between the
      interexchange Service set forth in a Service Order and the Local Access
      Services. Seller will coordinate the installation of the Local Access
      Services with the interexchange Service being provided by Seller. Charges
      to Customer for Local Access Service administered by Seller on behalf of
      Customer shall be billed to Customer at the pass through tariff rate of
      the Local Access service provider for the term on each Customer Service
      Order plus a monthly management fee per the schedule below. Billing for
      Local Access will begin on the date Seller accepts the service from the
      Local Access Provider. If the tariff rate for Local Access Services is
      changed by the Local Access service provider, such changes will be passed
      through to Customer.

                 Local Access Services Management Fee Schedule

                      Port Size               Monthly Fee
                         T1                     $ 25.00
                         DS3                    $250.00
                         OC3                    $250.00

      5.3 Customer may, upon notice to Seller on the applicable Service Order,
      order its own Local Access Services. In such event, Customer shall be
      billed directly by the provider of such services and Seller shall not be
      responsible for billing any such charges. If Customer orders its own Local
      Access Services, Customer shall be responsible for ensuring that such
      services are turned up at the same time as the Services being provided by
      Seller. In the event the Customer-ordered Local Access Services are not
      ready at such time as the Services being provided by Seller, Seller shall
      nevertheless have the right to begin billing for such Services as of the
      Actual Start Date and Customer shall be liable for payment for such
      Services as of such date. Seller will not be responsible for outages of
      local access circuits and troubleshooting local access circuits ordered by
      Customer but will coordinate and test end-to-end with local access
      providers as needed by Customer.

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6.0 Ancillary Services and Charges

      6.1 Seller may provide extraordinary service to Customer for reasons
      including but not limited to: (a) Customer's request to expedite Service
      availability to a date earlier than Seller's published installation
      interval or a previously accepted start date; (b) Service redesign or
      other activity occasioned by receipt of inaccurate information from
      Customer; (c) reinstallation charges following any suspension of the
      Service for cause by Seller; (d) Customer's request for use of routes or
      facilities other than those selected by Seller for provision of the
      Service; and (e) other circumstances in which extraordinary costs and
      expenses are generated by Customer and reasonably incurred by Seller
      (services under this subsection are collectively referred to herein as
      "Ancillary Services"). Customer shall be liable for all charges for any
      Ancillary Services provided by Seller.

      6.2 If Customer desires to change the date on which Customer has requested
      that Service be available, other than a request to expedite Service as set
      forth above, Customer may be charged a Change of Service Date Charge. Such
      charge will not apply to Customer's first change request, as long as such
      request is made more than fifteen (15) business days prior to the original
      Requested Start Date. If Customer makes a second change, or such change is
      requested less than fifteen (15) days prior to the original Requested
      Service Date, Customer will be charged Seller's then applicable Change of
      Service Date Charge. Customer will also be charged for any charges
      incurred by Seller from third party providers as a result of Customer's
      request for Change of Service Date.

      6.3 If Customer requests a modification to the information contained in a
      Service Order (other than a Change of Service Date) prior to completion of
      installation of the Service, Customer may incur a Change of Service Order
      Charge. No charge will be incurred if the change is administrative in
      nature (i.e. billing address, contact information, etc.). A charge will be
      incurred if the administrative change relates to Local Access for which
      Seller is acting as agent.

      6.4 If Customer requests a change to Services after such Services have
      been installed, Customer may incur a Change of Service Charge. If such
      Change of Service is administrative in nature, Customer will not incur a
      charge, unless such administrative change applies to Local Access Services
      which have been ordered by Seller as agent for Customer. In addition to
      the Change of Service Charge, Customer will be responsible for any charges
      due to re-engineering which is required as a result of Customer's request
      for Change of Service.

      6.5 If Customer desires to cancel a Service Order prior to installation
      and acceptance of the Service, Customer will incur a Cancellation Charge.
      In addition to the Cancellation Charge, Customer will be required to
      reimburse Seller for any cancellation charges relating to Local Access or
      off-net service for which Seller is acting as agent.

      6.6 All charges referred to in this Section 6.0 shall be established as of
      Seller's acceptance of the Service Order to which they apply unless they
      are otherwise specifically set forth in the Williams Vyvx Services Pricing
      Schedule as non-recurring charges. Such non-recurring charges will be set
      forth for each type of Service available under this Agreement. Ancillary
      Charges are detailed in Exhibit I attached hereto.

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7.0 Payment Terms

      7.1 Due Date and Invoice. All amounts stated on each monthly invoice are
      due and payable upon Customer's receipt of the invoice ("Due Date").
      Customer agrees to remit payment to Seller at the remittance address. In
      the event Customer fails to make full payment of any amounts due,
      including any prior late fees (the "Balance") to the proper address within
      thirty (30) days of the date of the invoice, Customer shall also pay a
      late fee in the amount of the lesser of one and one-half percent (1 1/2%)
      of the unpaid Balance per month or the maximum lawful rate under
      applicable state law which shall accrue from the Due Date. Customer
      acknowledges and understands that all charges are computed exclusive of
      any applicable federal, state or local use, excise, valued added, gross
      receipts, sales and privilege taxes, duties, fees or similar liabilities
      (other than general income or property taxes imposed on Seller), whether
      charged to or against Seller, its suppliers or affiliates or Customer
      associated with the Service, Local Access Service or Ancillary Service
      provided to Customer ("Additional Charges"). Such Additional Charges shall
      be paid by Customer in addition to all other charges provided for herein.

      7.2 Billing and Payment. All prorated monthly recurring charges (charges
      for monthly Service or Ancillary Service provided for less than a calendar
      month), installation and other non-recurring charges shall be billed
      following the acceptance of such Service, Local Access Service or
      Ancillary Service pursuant to Section 4.6 above. Payment for all monthly
      recurring charges for full months during which Service, Local Access
      Service or Ancillary Service are to be provided shall be billed in
      arrears. Billing shall be monthly starting on the first of each month and
      running through the end of each month (the "Billing Cycle).

      7.3 Billing Disputes. If Customer in good faith disputes any portion of an
      invoice it must pay the undisputed amount of the invoice on or before its
      Due Date and provide written notice to Seller of the billing dispute
      within sixty (60) days thereafter. Such notice must include documentation
      substantiating the dispute. Customer's failure to notify Seller of a
      dispute shall be deemed to be Customer's acceptance of such charges. The
      parties will make a good faith effort to resolve billing disputes as
      expeditiously as possible. If a dispute is resolved in favor of Customer,
      Customer shall receive an adjustment on its next bill.

      In the event of an over billing, Customer may request billing adjustments
      for a period of two (2) years after the Due Date of an invoice, or two (2)
      years after the date a service is rendered, whichever is later. If
      Customer has no past due balance a payment for such amounts will be issued
      to Customer within 30 days of the receipt of written notification and
      verification of the claim. If Customer has a past due balance a credit
      will be issued to the account.

      7.4 Suspension of Service.

      (a) In the event payment for undisputed amounts is not received from
      Customer on or before sixty (60) days following the date of the invoice,
      Seller shall have the right to suspend all or any portion of the Services,
      Local Access Services or Ancillary Services to Customer. Seller shall
      exercise this suspension right by providing Customer with a minimum of ten
      (10) days' written notice specifying the past due amount and the Services
      and/or Ancillary Services to be suspended. If Seller receives the entire
      specified past due amount within the ten (10) day notice period, then
      Customer's Service shall not be suspended.

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      (b) If only a portion of the Services, Local Access Services or Ancillary
      Services is initially suspended pursuant to Seller's written notice, and
      Customer fails to pay the specified past due amount within an additional
      ten (10) days after the partial suspension of Service, then after the
      additional ten (10) day period, Seller may suspend all or any additional
      portion of the Services, Local Access Services or Ancillary Services to
      Customer with no additional written notice. Further, after the additional
      ten (10) day period, Seller may continue suspension until such time as
      Customer has paid in full all charges then due, including any late fees as
      specified herein. Following such payment, Seller shall reinstate
      Customer's Services, Local Access Services or Ancillary Services, subject
      to Seller's Right to Assurance as provided in Paragraph 7.5 below.

      (c) Suspension of Services, Local Access Services or Ancillary Services as
      set forth in this Paragraph shall not affect Customer's obligation to pay
      for the Services, Local Access Services or Ancillary Services.

      7.5 Seller's Right to Assurance.

      (a) If at any time there is a material adverse change in Customer's
      creditworthiness or a material change in Customer's financial position,
      then in addition to any other remedies available to Seller, Seller may
      elect, in its sole discretion, to demand reasonable assurance of payment
      from Customer. An adverse material change in Customer's creditworthiness
      shall include, but not be limited to: (a) Customer's default of its
      obligations to Seller under this or any other agreement with Seller; (b)
      failure of Customer to make full payment of charges due hereunder on or
      before the Due Date on three (3) or more occasions during any period of
      twelve (12) or fewer months or Customer's failure to make such payment on
      or before the Due Date in any two (2) consecutive months; (c) acquisition
      of Customer (whether in whole or by majority or controlling interest) by
      an entity which is insolvent, which is subject to bankruptcy or insolvency
      proceedings, which owes past due amounts to Seller or any entity
      affiliated with Seller or which is a materially greater credit risk than
      Customer; or (d) Customer's being subject to or having filed for
      bankruptcy or insolvency proceedings or the legal insolvency of Customer.
      An adverse material change in Customer's financial position shall include,
      but not be limited to: (a) a decrease in net worth or working capital of
      five percent (5%) or greater; or, (b) negative net worth or working
      capital. If Customer's financial statements are not public information,
      upon Seller's demand for reasonable assurance of payment, Customer shall
      be required to provide financial statements. After receipt of Customer's
      financial information, Seller may require a deposit or other similar means
      to establish reasonable assurance of payment.

      (b) If Customer has not provided Seller with its financial information and
      with reassurance satisfactory to Seller within thirty (30) days of
      Seller's notice of demand for reassurance, then, in addition to any other
      remedies available to Seller, Seller shall have the option, in its sole
      discretion, to exercise one or more of the following remedies: (i) cause
      the start of the Service, Local Access Service or Ancillary Service
      described in a previously executed Service Order to be delayed pending
      satisfactory reassurance; or (ii) decline to accept a Service Order or
      other requests from Customer to provide Service, Local Access Service or
      Ancillary Service.

      7.6 Credit. As may be determined by Seller, if the financial condition or
      payment history of Customer is determined by Seller to be unacceptable,
      Seller may require Customer to post a deposit or irrevocable letter of
      credit, at Seller's option, to secure Customer's payment for the term of
      this Agreement. Should Seller determine that a deposit or irrevocable
      letter of credit is necessary, Customer and Seller will execute the
      appropriate Credit or Deposit Agreement. Should Customer fail to post such
      deposit or letter of credit or fail to execute the appropriate agreement
      within fifteen

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      (15) days of Seller's notice of such requirement, or should Customer fail
      to abide by the terms of any Credit or Deposit Agreement, Customer shall
      be deemed to be in default of this Agreement and Seller may terminate this
      Agreement in accordance with Section 8.7 below.

      7.7 Taxes. If any sales taxes, valued added taxes or similar charges or
      impositions are asserted against Seller after, or as a result of,
      Customer's use of Services, Local Access Services or Ancillary Service by
      any local, state, national, international, public or quasi-public
      governmental entity or foreign government or its political subdivision,
      including without limitation, any tax or charge levied to support the
      federal Universal Service Fund contemplated by the Telecommunications Act
      of 1996, or any state equivalent, Customer shall be solely responsible for
      such taxes, charges or impositions. Customer agrees to pay any such taxes,
      charges or impositions and hold Seller harmless from any liability or
      expense associated with such taxes, charges or impositions.

      7.8 Adjustments. Seller may make billing adjustments for a period of
      ninety (90) days after the Due Date of an invoice, or ninety (90) days
      after the date a service is rendered or changed, whichever is later.

8.0 General Agreement

      8.1 Outage Credits

      (a) Customer acknowledges the possibility of an unscheduled, continuous
      and/or interrupted period of time when a Service or Services are
      "unavailable" (as defined in the Technical Specifications attached hereto
      as Exhibit II) (hereafter an "Outage"). An Outage shall begin upon the
      earlier of Seller's actual knowledge of the Outage or Seller's receipt of
      notice from the Customer of the Outage. An outage will be considered to
      have ended when Services in accordance with this Agreement have been
      restored. In the event of an Outage, Customer shall be entitled to a
      credit (the "Outage Credit") upon Seller's receipt of Customer's written
      request for such Outage Credit.

      (b) When the cumulative total of Outage minutes for an affected circuit in
      any given calendar month is less than 30 minutes, the Outage Credit shall
      be based on the following formula:

 Outage Credit Calculation =  Outage (in minutes) x Monthly Port and PVC charges
                              --------------------------------------------------
                              43,2000 (deemed number of minutes per month)

      (c) When the cumulative total of Outage minutes for an affected circuit in
      any given calendar month is 30 minutes or more, the Outage Credit shall be
      based on the following:

            i)    If the cumulative total of Outage minutes is between 30 and 60
                  minutes in a calendar month, Customer will receive a credit
                  equal to 10% of the Monthly Port and PVC charges for the
                  affected circuit.

            ii)   If the cumulative total of Outage minutes is between 61 and
                  120 minutes in a calendar month, Customer will receive a
                  credit equal to 25% of the Monthly Port and PVC charges for
                  the affected circuit

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            iii)  If the cumulative total of Outage minutes is between 121 and
                  180 minutes in a calendar month, Customer will receive a
                  credit equal to 50% of the Monthly Port and PVC charges for
                  the affected circuit.

            iv)   If the cumulative total of Outage minutes is between 181 and
                  240 minutes in a calendar month, Customer will receive a
                  credit equal to 75% of the Monthly Port and PVC charges for
                  the affected circuit.

            v)    If the cumulative total of Outage minutes exceeds 240 minutes
                  in a calendar month, Customer will receive a credit equal to
                  100% of the Monthly Port and PVC charges for the affected
                  circuit and will suspend the $75,000 monthly recurring revenue
                  threshold for continued favorable pricing detailed in Exhibit
                  I, Section F 2.

      (b) At no time will the total credit extended to Customer for an affected
      circuit exceed 100% of the total Monthly Port and PVC service charges for
      such circuit.

      (e) Customer will not receive an Outage Credit if the Outages are (i) due
      to normal equipment operation with restoral time of two (2) to thirty (30)
      seconds, (ii) due to a Force Majeure event as defined in Section 8.15 of
      this Agreement (iii) caused by the negligence or willful misconduct of
      Customer or others authorized by Customer to use the services, (iv) due to
      the failure of power, facilities, equipment, systems or connection not
      provided by Seller, (v) caused by the failure of Local Access, (vi) as a
      result of scheduled maintenance where Customer has been notified of
      scheduled maintenance in advance, (vii) as a result of Customer's failure
      to make the circuit available for Williams to repair or re-route, or
      Customer's failure to notify the Williams Network Control Center (NCC)
      prior to taking any circuit out of Service.

      8.2 Excessive Outage.

            (a)   Customer may terminate individual Service Order(s) in the
                  event Customer experiences any of the following circumstances
                  with respect to such Service Order(s) each of which
                  constitutes an Excessive Outage:

                  (i)   Failure to meet the applicable Service Specifications
                        for a period of eight (8) consecutive hours; or

                  (ii)  Failure to meet the applicable Service Specifications
                        for a cumulative period totaling twelve (12) hours or
                        more within any consecutive thirty (30) day period.

            (b)   In the event individual Service Orders are terminated by
                  Customer pursuant to section 8.2(a) above, Customer shall give
                  written notice to Seller of such termination within thirty
                  (30) days of such outage and Customer shall pay Seller in
                  accordance with this Agreement for all Services performed up
                  to and including the effective date of termination of such
                  Service Order(s). In addition, Customer shall pay for all
                  Local Access charges, including any termination charges.

      8.3 All Outage Credits will be based on Vyvx trouble ticket disposition
      which detail the Williams' trouble ticket number(s), affected circuits,
      affected PVC's and outage minutes. The

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      trouble ticket disposition will be sent to Customer for each outage and
      any credit due will be issued against future port and PVC charges for the
      affected service no later than sixty (60) days from the date of occurrence
      if not sooner.

      8.4 Limited Termination Right.

            (a)   Customer shall have a limited right to terminate this
                  Agreement in the event that the port of any of Customer's
                  "Backbone Circuits":

                  (i)   fails to meet the applicable Service Specifications for
                        a consecutive period of twelve (12) hours.

                  (ii)  fails to meet the applicable Service Specifications for
                        a cumulative period totaling sixteen (16) hours or more
                        within any consecutive thirty (30) day period.

                  (iii) And provided that an acceptable work around has not been
                        established to restore the failed Service.

            (b)   "Backbone Circuits" shall be defined as those circuits which
                  Customer uses to distribute its primary "Live Streaming"
                  transmissions. The Backbone Circuits currently are:

                  TWC395828   Next Venue
                  TWC254470   Exodus West
                  TWC221655   LA Teleport

            (c)   Customer may exercise this limited right to terminate upon
                  ninety (90) days' written notice. Customer's notice shall be
                  given within thirty (30) days of the end of the failure giving
                  rise to Customer's right to terminate. Customer shall pay
                  Seller in accordance with this Agreement for all Services
                  performed up to and including the effective date of
                  termination (without benefit of any Outage Credits provided
                  for in this Section).

            (d)   In addition, Customer shall pay for all Local Access charges,
                  including any termination charges.

      8.5 The Outage Credit, the ability to terminate individual Service Orders,
      and Customer's limited right to terminate as set forth in this Section
      shall be the sole and exclusive remedies of Customer in the event of any
      Outage and under no circumstances shall an Outage be deemed a default
      under this Agreement.

      8.6 Termination Liability Charges. If Customer desires to disconnect any
      Service or Ancillary Service after installation Customer may do so by
      providing written notification to Williams thereof sixty (60) days in
      advance of the effective date of the disconnection. In the event of such
      disconnection, Customer shall pay to Williams a Termination Liability
      Charge in an amount equal to the monthly charge for such disconnected
      Service or Ancillary Service multiplied by the number of months in the
      relevant Term for such Service or Ancillary Service plus any
      administrative costs, less the charges for such Service or Ancillary
      Service actually paid by Customer through the effective date

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      of the disconnection. Customer agrees that the actual damages in the event
      of such disconnection would be difficult or impossible to ascertain, and
      that the Termination Liability Charge in this Section is intended,
      therefore, to establish liquidated damages and is not intended as a
      penalty. Notwithstanding the foregoing, and upon thirty (30) day's prior
      written notice to the other party, either Customer or Williams shall have
      the right, without incurring a Termination Liability Charge or other
      liability to the other party, to disconnect the affected portion of any
      Service or Ancillary Service, if Williams is prohibited by governmental
      authority from furnishing or Customer is prohibited from using such
      portion, or if any material rate or term contained herein and relevant to
      the affected portion of any Service or Ancillary Service is substantially
      changed by order of the highest court of competent jurisdiction to
      adjudicate the matter, the Federal Communications Commission, or other
      local, state or federal government authority.

      8.7 Portability. After any Service has been in effect for a period of at
      least twelve (12) months or at least three (3) months if the term of the
      Service is (12) twelve months, Customer shall have the option to
      disconnect a circuit and order a new circuit as a replacement without
      incurring a termination liability charge. The replacement circuit must be
      for the same or greater term and the same or greater monthly revenue as
      the circuit being replaced and the replacement circuit must be ordered by
      Customer and installed within sixty (60) days after the date on which
      Customer provides Seller with written notice of cancellation. The existing
      port charges will continue until the replacement port charges are
      applicable. If Customer exercises this portability option, Customer will
      be liable for (i) all termination liability and disconnect charges for
      Local Access Services or any other third party provided facilities that
      are impacted by the replacement of the circuit; and (ii) all installation
      one-time charges due to Seller under Seller's standard new installation
      rates and charges; and (iii) any one-time Local Access Service charges and
      the new monthly recurring Local Access Service charges. Exercise of the
      replacement circuit option is restricted to Service on Seller's own
      network, and is subject to availability. This portability option is
      further limited in that the term of the replacement circuit shall be the
      balance of the term of the original circuit or six (6) months, whichever
      is longer, and the replacement circuit may only be moved one (1)
      additional time thereafter.

      8.8 Disconnection of Services. Customer may disconnect any Service, Local
      Access Service or Ancillary Service provided hereunder by providing
      written notification to Seller thereof sixty (60) days in advance of the
      effective date of disconnect. In the event of such disconnection, Customer
      shall pay to Seller a disconnection charge, unless Customer exercises the
      portability option defined in Section 8.7, in an amount equal to (i) the
      monthly charge for each such disconnected Service, Local Access Service or
      Ancillary Service multiplied by the number of months in the relevant Term
      for such Service, Local Access Service or Ancillary Service, less the
      charges for each such Service, Local Access Service or Ancillary Service
      actually paid by Customer through the effective date of disconnection and
      (ii) any non-recurring payments not yet paid together with any termination
      liability associated with Local Access Service or any other third-party
      provided service. Customer agrees that the actual damages in the event of
      such disconnection would be difficult or impossible to ascertain, and that
      the disconnection charge in this Section 8.8 is intended, therefore, to
      establish liquidated damages and is not intended as a penalty.

      8.9 Warranty and Disclaimer of Warranty. Seller warrants that Services or
      Ancillary Services shall be provided to Customer in accordance with the
      applicable Technical Specifications set forth in Exhibit II. Seller shall
      use commercially reasonable efforts under the circumstances to remedy any
      delays, interruptions, omissions, mistakes, accidents or errors in the
      Services or Ancillary Services and restore such Services or Ancillary
      Services to comply with the terms hereof. THE

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      FOREGOING WARRANTY IS THE SOLE AND EXCLUSIVE WARRANTY AND IS PROVIDED IN
      LIEU OF ALL OTHER WARRANTIES WHETHER EXPRESS OR IMPLIED INCLUDING WITHOUT
      LIMITATION THE IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A
      PARTICULAR PURPOSE. THE OUTAGE CREDITS REMEDY PROVIDED TO CUSTOMER AS SET
      FORTH IN SECTION 8.1 IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO CUSTOMER
      AND IS IN LIEU OF ALL OTHER REMEDIES, REGARDLESS OF WHETHER THIS WARRANTY
      FAILS OF ITS ESSENTIAL PURPOSE.

      8.10 Limitation of Liability. EXCEPTING ONLY LIABILITY FOR WILLIAMS'
      RECKLESS OR WILLFUL MISCONDUCT, WILLIAMS' LIABILITY ARISING OUT OF ITS
      PROVISION OF SERVICES HEREUNDER, INCLUDING BUT NOT LIMITED TO LIABILITIES
      ARISING OUT OF WILLIAMS' NEGLIGENCE, MISTAKES AND OMISSIONS,
      INTERRUPTIONS, DELAYS, ERRORS, OR OTHER DEFECTS IN THE SERVICES OR BREACH
      OF CONTRACT OR ARISING OUT OF THE FAILURE TO FURNISH SERVICES, WHETHER
      CAUSED BY ACTS OF COMMISSION OR OMISSION, SHALL BE LIMITED TO THE
      EXTENSION OF ALLOWANCES FOR INTERRUPTIONS AS SET FORTH IN THIS AGREEMENT.
      SUCH ALLOWANCES FOR INTERRUPTION SHALL BE THE SOLE REMEDY OF CUSTOMER,
      INCLUDING ANY END USER OF CUSTOMER, AND THE SOLE LIABILITY OF WILLIAMS
      HEREUNDER. WILLIAMS' LIABILITY FOR DAMAGES OR LOSSES OF ANY KIND ARISING
      OUT OF ITS FURNISHING SERVICES SHALL IN NO EVENT EXCEED AN AMOUNT EQUAL TO
      ITS FIXED MONTHLY OR OTHER CHARGE ALLOCABLE TO THE FAULTY OR DEFECTIVE
      SERVICE.

      NOTWITHSTANDING THE PROVISIONS OF THE PRECEDING SUBPARAGRAPH, WILLIAMS
      SHALL NOT BE LIABLE TO CUSTOMER OR ANY END USER FOR ANY LOSS OF, DEFECTS
      IN OR ANY INABILITY TO FURNISH SERVICE DUE TO ACTS OF GOD, ACTS OF
      GOVERNMENT, WARS, RIOTS, STRIKES, FAILURE OF A TRANSPONDER, FAILURE OF A
      SATELLITE, FAILURE OF ANY OTHER TRANSMISSION EQUIPMENT OR OTHER CAUSES
      BEYOND WILLIAMS' CONTROL.

      ANY AND ALL EXPRESS AND IMPLIED WARRANTIES RELATING TO THE SERVICES,
      INCLUDING BUT NOT LIMITED TO, WARRANTIES OF MERCHANTABILITY OR FITNESS FOR
      A SPECIFIC PURPOSE OR USE, ARE EXPRESSLY DISCLAIMED. CUSTOMER SHALL
      DEFEND, INDEMNIFY AND HOLD HARMLESS WILLIAMS FROM ANY CLAIMS MADE UNDER A
      WARRANTY OR REPRESENTATION MADE BY CUSTOMER TO ANY THIRD PARTY WITH
      RESPECT TO THE SERVICES.

      8.11 EXCEPT FOR CUSTOMER'S PAYMENT OBLIGATIONS HEREUNDER, IN NO EVENT
      SHALL EITHER PARTY BE LIABLE TO THE OTHER FOR ANY INCIDENTAL OR
      CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, LOST PROFITS),
      REGARDLESS OF THE FORESEEABILITY THEREOF, OCCASIONED BY THE TERMINATION OF
      CUSTOMER'S RIGHTS TO USE, OR THE PREEMPTION OF OR THE FAILURE OF, OR LOSS
      OF TECHNICAL QUALITY OF, THE SERVICES OR BY ANY DELAY IN COMMENCEMENT OF
      THIS AGREEMENT OR BY ANY OTHER CAUSE OR MATTER WHATSOEVER.

      8.12 EXCEPT FOR CUSTOMER'S PAYMENT OBLIGATIONS HEREUNDER, IN NO EVENT
      SHALL CUSTOMER BE LIABLE TO WILLIAMS FOR DIRECT DAMAGES IN EXCESS OF ONE
      MILLION DOLLARS.

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      8.13 Customer Content and Indemnity. Customer shall make all arrangements
      with copyright holders, music licensing organizations, performers'
      representatives or other parties for necessary authorizations, clearances
      or consents with respect to transmission contents ("Consents"). Customer
      shall indemnify and hold harmless Providers (as defined below) against and
      from any court, administrative or agency action, suit or similar
      proceeding, whether civil or criminal, private or public, brought against
      Providers arising out of or related to the contents transmitted hereunder
      (over Seller's network or otherwise) including, but not limited to,
      claims, actual or alleged, relating to any violation of copyright law,
      export control laws, failure to procure Consents, failure to meet
      governmental or other technical broadcast standards, or that such
      transmission contents are libelous, slanderous, an invasion of privacy,
      pornographic, or otherwise unauthorized or illegal. Providers shall be
      defined to include Seller, any third party or affiliated provider,
      operator or maintenance/repair contractor of facilities employed in
      connection with the provision of Services, Local Access Services or
      Ancillary Services under this Agreement. Seller may terminate or restrict
      any transmissions over the network if, in its judgment, (a) such actions
      are reasonably appropriate to avoid violation of applicable law; or (b)
      there is a reasonable risk that criminal, civil or administrative
      proceedings or investigations based upon the transmission contents shall
      be instituted against Providers. Customer agrees not to use Services,
      Local Access Services or Ancillary Services for any unlawful purpose,
      including without limitation any use which constitutes or may constitute a
      violation of any local, state or federal obscenity law.

      8.14 General Indemnity.

      a) Customer and Seller shall defend, indemnify and hold harmless the other
      against and from any and all claims for physical property damage, physical
      personal injury or wrongful death to the extent that such arises out of
      the negligence or willful misconduct of the respective indemnifying party,
      its employees, agents, or contractors in connection with the provision or
      use of Services, Local Access Services, Ancillary Services or other
      performance.

      b) With respect to third parties that use Services, Local Access Services
      or Ancillary Services through Customer, Customer shall defend, indemnify
      and hold harmless Providers against any claims by such third parties for
      damages arising or resulting from any defect in or failure to provide
      Services, Local Access Services or Ancillary Services.

      c) The indemnifying party agrees to defend the other against the claims as
      set forth above and to pay all reasonable litigation costs, attorneys'
      fees, court costs, settlement payments, and any damages awarded or
      resulting from any such claims. The indemnified party shall promptly
      notify the indemnifying party in writing of any such claims.

      8.15 Force Majeure. If either party's performance of this Agreement or any
      obligation (other than the obligation to make payments) hereunder is
      prevented, restricted or interfered with by causes beyond its reasonable
      control including, but not limited to, acts of God, fire, explosion,
      vandalism, cable cut, power outage, storm or other similar occurrence
      including rain fade or other atmospheric conditions, any law, order,
      regulation, direction, action or request of the United States Government
      or national, state or local governments, or of any department, agency,
      commission, court, bureau, corporation or other instrumentality of any one
      or more of said governments, or of any civil or military authority, or by
      national emergencies, insurrections, riots, wars, acts of terrorism,
      strikes, lockouts or work stoppages or other labor difficulties, supplier
      failures, shortages, breaches or delays, then the affected party shall be
      excused from such performance on a day-to-day basis to the extent of such
      prevention, restriction or interference. The affected party shall use

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      commercially reasonable efforts under the circumstances to avoid and
      remove such causes of non-performance and shall proceed to perform with
      reasonable dispatch whenever such causes cease.

      8.16 Events of Default. Either party may terminate this Agreement if the
      other is in default of any material obligation contained herein, which
      default has not been cured within thirty (30) days following the receipt
      of notice of such default setting forth the specifics of such default.
      Termination and receipt of any applicable refund are Customer's sole
      remedies in the event of any such Seller's default. Notwithstanding the
      foregoing, the failure of any particular Service or Services to comply
      with the Technical Specifications (as set forth in Exhibit II) shall not
      be deemed a default by Seller, but may obligate Seller to provide Customer
      with Outage Credits, as provided in Section 8.1 hereof.

      8.17 Use of Services. Seller's obligation to provide Services, Local
      Access Services or Ancillary Services to Customer is subject to the
      following conditions: (a) Services, Local Access Services or Ancillary
      Services shall not be used for any unlawful purpose, (b) at least ten
      percent (10%) of the transmissions shall be interstate transmissions.
      Customer represents that this Agreement, to the extent it is subject to
      FCC regulation, is an inter-carrier agreement not subject to the filing
      requirements of Section 211(a) of the Communications Act of 1934, as
      amended.

      8.18 Proprietary Information. Customer understands and agrees that the
      terms and conditions of this Agreement and all documents referenced herein
      (including invoices to Customer for Services, Local Access Services or
      Ancillary Services provided hereunder) are confidential as between
      Customer, Seller and its affiliates and shall not be disclosed by Customer
      to any party other than the directors, officers, and employees or agents
      of Customer who have specifically agreed to nondisclosure of the terms and
      conditions hereof. Violation by Customer or its agents of the foregoing
      provision shall entitle Seller, at its option, to discontinue Services,
      Local Access Services or Ancillary Services to Customer without further
      obligation or liability to Customer. Customer further agrees that any
      Customer generated press release, advertisement or publication regarding
      this Agreement, Services, Local Access Services or Ancillary Services
      provided hereunder or in which Seller, or its affiliates are to be
      mentioned, will be submitted to Seller for its written approval prior to
      publication. Customer understands and agrees that Seller may disclose such
      information as may be required under applicable law including, without
      limitation, filing of tariffs.

      8.19 Intrastate Interexchange Services. Customer may use any interexchange
      Service provided under this Agreement only if such interexchange Service
      is used for carrying interstate telecommunications (i.e.,
      telecommunications subject to the jurisdiction of the Federal
      Communications Commission). Seller and its affiliates shall not be
      obligated to make available interexchange Service on a circuit with end
      points within a single state or service on a circuit which
      originates/terminates at points both of which are situated within a single
      state unless Customer represents in writing that such interexchange
      Service or circuits shall be used to carry at least 10% interstate
      telecommunications. If it is determined at any time that such
      interexchange Service or circuit is subject to state regulation, the
      interexchange Service or circuit may be provided by Seller or its
      affiliates pursuant to applicable state laws, regulations and applicable
      tariffs, or Seller and its affiliates may discontinue provision of the
      affected interexchange Service or circuit.

      8.20 Customer Responsibilities. Customer has sole responsibility for
      installation, testing and operation of facilities, services and equipment
      ("Customer Facilities") other than those specifically provided by Seller
      as part of the Services, Local Access Services or Ancillary Services as
      described

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      in a Service Order. In no event will the untimely installation or
      non-operation of Customer Facilities relieve Customer of its obligation to
      pay charges for the Services, Local Access Services or Ancillary Services
      after the Actual Start Date.

      8.21 Universal Service Fund. During the Term of this Agreement, Customer
      shall provide Seller, on a semiannual basis, a universal service exemption
      certificate within thirty (30) days of the Customer's filing of the
      universal service filing made with the appropriate federal agency,
      evidencing that the Customer is required to contribute to the federal
      Universal Service Fund. Customer agrees that failure to provide such an
      exemption authorized Seller to begin billing Customer prospectively for
      Universal Service Fund contributions pursuant to the applicable
      contribution factor (revised quarterly), plus an administrative charge of
      1%.

9.0. Miscellaneous Provisions

      9.1 Title to Equipment. This Agreement shall not, and shall not be deemed
      to, convey to Customer title of any kind to any of the transmission
      facilities, digital encoder/decoders, telephone lines, microwave
      facilities or other facilities utilized in connection with the Services or
      Ancillary Services. Any equipment provided by Customer must be itemized on
      a schedule listing all such Customer-provided equipment and appended to
      the Service Order to which use of that equipment relates ("Customer
      Equipment Inventory"). Seller shall not be obligated to provide any
      Services, Local Access Services or Ancillary Services for Customer if
      Customer will be providing any of its own equipment unless and until such
      equipment is itemized on the applicable Customer Equipment Inventory.

      9.2 Notices. All notices to be sent to a party pursuant to this Agreement
      shall be in writing and deemed to be effective upon (i) personal delivery,
      (ii) three days after mailing certified mail return receipt requested,
      (iii) on the day when the notice has been sent by facsimile if during
      business hours and followed by express mail priority next-day delivery, or
      (iv) in the case of invoices, upon the Due Date. In each case, the notice
      shall be sent to the person identified in this Section at the Full
      Business Addresses of the parties as they appear herein. The effective
      date for any notice under this Agreement shall be the date of delivery of
      such notice, not the date of mailing.

      The Full Business Address for purposes of notice under this Section as
      well as telephone voice and facsimile numbers shall be:

        SELLER:                                   CUSTOMER:
        Williams Vyvx Services, a business unit
        of Williams Communications, Inc.          iBEAM Broadcasting Corporation
                                                  645 Almanor Ave., Suite 100
        One Williams Center, 27th Floor           Sunnyvale, CA 94086
        Tulsa, Oklahoma 74172                     Telephone: (408)523-1600
        Telephone: (918) 573-7784                 Fax: (408)730-8937
        Fax: (918) 574-6042                       Attention: ___________________
        Attention: Contract Administration

      9.3 Merger/Integration. This Agreement (including the attached Exhibits,
      as they may be modified from time to time) consists of all the terms and
      conditions contained herein and in documents incorporated herein
      specifically by reference. This Agreement constitutes the complete and

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      exclusive statement of the understanding between the parties and
      supersedes all proposals and prior agreements (oral or written) between
      the parties relating to Services, Local Access Services or Ancillary
      Services provided hereunder.

      9.4 Written Amendment. Any addition, deletion or modification to this
      Agreement shall not be binding on either party except by written amendment
      executed by both parties.

      9.5 No Venture. The provision of Services, Local Access Services or
      Ancillary Services shall not create a partnership or joint venture between
      the parties.

      9.6 Suspension of Service. In addition to the nonpayment of any sum due
      hereunder, Seller may immediately suspend Services, Local Access Services
      or Ancillary Services in whole or part if Seller determines that such
      Services, Local Access Services or Ancillary Services violate the
      Communications Act of 1934, as amended (including the Telecommunications
      Act of 1996), or that the imposition of any state or federal statute, or
      promulgation of any rule, regulation, or order of the Federal
      Communications Commission ("FCC") or other governing body makes Seller's
      performance commercially impracticable.

      9.7 Effect of Change in Law. Upon thirty (30) day's prior written notice
      to the other party, either Customer or Seller shall have the right,
      without disconnection charge or other liability to the other party, to
      cancel the affected portion of any Service, Local Access Service or
      Ancillary Service, if Seller is prohibited by governmental authority from
      furnishing or Customer is prohibited from using such portion, or if any
      material rate or term contained herein and relevant to the affected
      portion of any Service, Local Access Service or Ancillary Service is
      substantially changed by order of the highest court of competent
      jurisdiction to adjudicate the matter, the Federal Communications
      Commission, or other local, state or federal government authority.

      9.8 Network Downturn: In the event that Customer's network makes a
      significant change or an event occurs which has a major impact on
      Customer's network, finances or other such event, the Parties hereby agree
      to work in good faith to reduce any minimum commitments and/or termination
      liability charges that may be the subject matter of this Agreement.

      9.9 PARTIES BOUND BY AGREEMENT; ASSIGNMENT. This Agreement is binding upon
      and shall inure to the benefit of the parties hereto and upon their
      respective successors and permitted assigns. Customer may not assign this
      Agreement without the prior written consent of Williams, which consent
      shall not be unreasonably withheld. Notwithstanding the foregoing, upon
      written notice, either party may assign to a parent, affiliate or
      subsidiary company without the consent of the other.

      9.10 Choice of Law. This Agreement shall be governed by the laws of the
      State of New York without regard to choice of law principles.

      9.11 Interpretation. No rule of construction requiring interpretation
      against the draftsman hereof shall apply in the interpretation of this
      Agreement.

      9.12 No Third Party Beneficiary. The provisions of this Agreement are for
      the benefit only of the parties hereto, and no third party may seek to
      enforce or benefit from these provisions.

      9.13 Attorneys' Fees. If a proceeding is brought for the enforcement of
      this Agreement or because of any alleged or actual dispute, breach,
      default or misrepresentation in connection with any of the

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      provisions of this Agreement, the prevailing party shall be entitled to
      recover reasonable attorneys' fees and other reasonable costs and expenses
      incurred in such action or proceeding in addition to any other relief to
      which such party may be entitled.

      9.14 Severability. In the event any provision of this Agreement conflicts
      with any statute, rule or order of any governmental unit or regulatory
      body, or tariff then, if required by law, such statute, rule, order or
      tariff shall control.

      9.15 No Waiver. The failure of either party to enforce any provision
      hereof shall not constitute the permanent waiver of such provision.

iBEAM BROADCASTING CORPORATION              WILLIAMS VYVX SERVICES,
                                            a business unit  of
                                            WILLIAMS COMMUNICATIONS, INC.

By:/s/ Daniel Sroka                         By:    /s/ Laura Kenny
   -------------------------------             ---------------------------------
Name:  Daniel Sroka                         Name:
     -----------------------------               -------------------------------

Title: Vice President                       Title:
      ----------------------------                ------------------------------

Date:  March 1, 2001                        Date:
     -----------------------------               -------------------------------

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                                   Exhibit I

                    Williams Vyvx Services Pricing Schedule

This Pricing Schedule is made as of this _____ day of ________________, 2001,
and is subject to that Data Services Agreement No. __________________ (the
"DSA") by and between Williams Vyvx Services, a business unit of Williams
Communications, Inc., a Delaware corporation ("Seller"), and iBEAM Broadcasting
Corporation, a ("Customer").

A. ATM Services

1.    Recurring Rates & Charges: ATM service has three basic rate elements;
      Local Access, Port Connections, and Bandwidth.

      a.    Local Access. Pricing for Local Access is determined in accordance
            with the Terms and Conditions set forth in Section 5.0 of the DSA.

      b.    UNI Port Connections. Pricing for User Network Interface (UNI) Port
            Connections is determined on the port speed connections selected by
            Customer. UNI is Port Connections are currently available at DS3,
            OC3 and OC12 speeds. Monthly recurring charges for Port Connections
            are set forth in Table A.1 below.

Table A.1   Monthly Recurring Port Charges

            -----------------------------------------------------------------
                             Monthly Recurring Port Charges
            -----------------------------------------------------------------
              Port Speed          Monthly Recurring Port            CoS
                                         Charge

            -----------------------------------------------------------------
                  DS3                                         VBR(nrt) or CBR
                                        $ 3,120
            -----------------------------------------------------------------
                  OC3                   $ 7,625               VBR(nrt) or CBR
            -----------------------------------------------------------------
                 OC12                   $29,600               VBR(nrt) or CBR
            -----------------------------------------------------------------

      c.    Bandwidth.

            (i) There are two types of Bandwidth, which can be selected, the
            Virtual Channel Connection (VCC) or the Virtual Path Connection
            (VPC). The type of bandwidth selected by the Customer does not
            determine the price.

            (ii) Pricing for Bandwidth is determined based on the Class of
            Service (CoS). Two Classes of Service are offered by Seller:
            Constant Bit Rate (CBR) and Variable Bit Rate(non real time
            (VBR(nrt). CoS charges are stated in Committed Information Rates
            (CIR) which are stated in Megabit per second (Mbps) increments for
            one-way (Simplex) VCCs or VPCs. CIR increments are available in
            1Mbps increments up to 40Mbps for DS3 ports, 5 Mbps increments up to
            150 Mpbs for OC3 ports and 25 Mbps increments up to 600 Mbps for
            OC12 ports. Monthly recurring charges for Bandwidth are set forth in
            Table A.2 below.

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Table A.2 Monthly Recurring Bandwidth Charges

     ---------------------------------------------------------------------------
                      Monthly Recurring Bandwidth Charges
     ---------------------------------------------------------------------------
       Port Speed        CoS                  CIR (Mbps)       Price Per Mbps
     ---------------------------------------------------------------------------
          DS3            CBR                     1-10               $350
     ---------------------------------------------------------------------------
                         CBR                     11-40              $335
     ---------------------------------------------------------------------------
          OC3            CBR                     5-20               $350
     ---------------------------------------------------------------------------
                         CBR                    25-150              $335
     ---------------------------------------------------------------------------
          OC12           CBR                     25-75              $305
     ---------------------------------------------------------------------------
                         CBR                    100-175             $295
     ---------------------------------------------------------------------------
                         CBR                    200-600             $290
     ---------------------------------------------------------------------------

2. Non-Recurring Charges:

            Non-recurring charges include installation, configuration changes,
            order cancellations and order changes that may be incurred for the
            Port, VCC or VPC. Such non-recurring charges are set forth in Table
            A.3 below.

Table A.3

     ---------------------------------------------------------------------------
                              Non Recurring Charges
     ---------------------------------------------------------------------------
               Description of Charge                           Charges
     ---------------------------------------------------------------------------
     Installation:
     ---------------------------------------------------------------------------
          DS3 Port                                              $1,500
     ---------------------------------------------------------------------------
          OC3 Port                                              $4,000
     ---------------------------------------------------------------------------
          OC12 Port                                             $15,000
     ---------------------------------------------------------------------------
          per PVC or VP                                         $40
     ---------------------------------------------------------------------------
     Expedite Charge                                            $300
     ---------------------------------------------------------------------------
     Change of Service Order Charges:
     ---------------------------------------------------------------------------
           Configuration Change Charge                          $50
     ---------------------------------------------------------------------------
     Order Cancellation Charge Pre/Post
     Engineering prior to circuit acceptance                    $500/$1000
     ---------------------------------------------------------------------------
     Local Access Change- post acceptance                       $ 500.00
     ---------------------------------------------------------------------------
     In addition to the Order Cancellation Charge, Customer
     will be required to reimburse Seller for any
     cancellation charges relating to Local Access or off-net
     service for which Seller is acting as agent.
     ---------------------------------------------------------------------------
          Port Order Change Charge                              $100
     ---------------------------------------------------------------------------
     Change of Service Charge:
     ---------------------------------------------------------------------------
          Configuration Change Charge                           $50
     ---------------------------------------------------------------------------
          Port Order Change Charge                              $100
     ---------------------------------------------------------------------------

      Configuration change charges are applied when the bandwidth size of a VCC
      or VPC are changed.

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            Order Cancellation Charges apply when a PVC, VP or Port has been
            ordered and needs to be canceled prior to the Service having been
            installed and accepted.

            Local Access Change Charges apply when local access services
            provided by a third party through Seller is moved or replaced with
            local access service to another location.

            Port Order Change Charges apply when Customer requests to change the
            port size ordered. If the Port has been installed and accepted,
            Customer will be charged for a new port installation.

B.    Private Line Services

1.    Private Line Service has three basic rate elements; Interexchange charges,
      Local Access Charges and non-recurring charges.

      a.    Interexchange rates are as set forth in Table B.1 below. Pricing for
            any Service not listed in such Table is determined on an individual
            case basis and will be set forth on Customer's Service Order.

Table B.1

     ---------------------------------------------------------------------------
          DS1        DS3         OC-3/OC-3(c)      OC-12/OC-12(c)       OC-48
         Rate       Rate            Rate                Rate             Rate
     ---------------------------------------------------------------------------
       $ 0.0630   $ 0.0315        $ 0.0284            $ 0.0268         $ 0.0252
     ---------------------------------------------------------------------------
     Rates are set per VGE V&H DS0 mile per month.
     ---------------------------------------------------------------------------

            Notwithstanding the foregoing, the minimum monthly charge for any
            Interexchange circuit ordered by Customer shall be as follows:

Table B.2

     ---------------------------------------------------------------------------
                                Minimum Monthly Charges
     ---------------------------------------------------------------------------
                      DS-1                                   $250
     ---------------------------------------------------------------------------
                      DS-3                                  $2,000
     ---------------------------------------------------------------------------
                      OC-3                                  $5,000
     ---------------------------------------------------------------------------
                      OC-12                                $20,000
     ---------------------------------------------------------------------------
                      OC-48                                $80,000
     ---------------------------------------------------------------------------

      b.    Non-Recurring Charges:

Table B.3

<TABLE>
<CAPTION>
----------------------------------------------------------------------------------------------
      Non-Recurring Charges                    DS-1      DS-3      OC-3      OC-12    OC-48
----------------------------------------------------------------------------------------------

----------------------------------------------------------------------------------------------
<S>                                            <C>      <C>       <C>       <C>      <C>
New Order Installation                         $400     $2,000    $6,000    $12,000  $24,000
----------------------------------------------------------------------------------------------
Order Change (1st change free)                 $25        $50     $2,000    $3,000   $4,000
----------------------------------------------------------------------------------------------
Order Cancellation
----------------------------------------------------------------------------------------------
            Pre-Engineering                    $150      $250      $500      $750    $1,000
----------------------------------------------------------------------------------------------
            Post-Engineering                   $300      $500     $2,000    $3,000   $4,000
----------------------------------------------------------------------------------------------
            In addition to the Pre- or Post-Engineering charges, Customer will
            be required to reimburse Seller for any cancellation charges
            relating to Local Access or off-net service for which Seller is
            acting as agent.
----------------------------------------------------------------------------------------------
ASR (new or disconnect) Special Access         $250      $250      $250      $250     $250
----------------------------------------------------------------------------------------------
ASR Supplement                                 $150      $150      $150      $150     $150
----------------------------------------------------------------------------------------------
</TABLE>

--------------------------------------------------------------------------------
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<PAGE>

<TABLE>
<CAPTION>
------------------------------------------------------------------------------------------------------------------
                     Non-Recurring Charges        DS-1          DS-3          OC-3        OC-12       OC-48
------------------------------------------------------------------------------------------------------------------
<S>                                             <C>           <C>           <C>         <C>          <C>
Order Expedite                                    $300          $300          $300        $300         $300
------------------------------------------------------------------------------------------------------------------
Reconfiguration                                   $200         $1,000        $3,000      $6,000       $12,000
------------------------------------------------------------------------------------------------------------------
Additional
Installation/Maintenance/Engineering            $100.00/hr    $100.00/hr    $100.00/hr  $100.00/hr   $100.00/hr
------------------------------------------------------------------------------------------------------------------
Additional
Installation/Maintenance/Engineering (After
Hours)                                          $125.00/hr    $125.00/hr    $125.00/hr  $125.00/hr   $125.00/hr
------------------------------------------------------------------------------------------------------------------
<CAPTION>
------------------------------------------------------------------------------------------------------------------
   Cross-Connect Charge                      Monthly Recurring                   Non-Recurring
------------------------------------------------------------------------------------------------------------------
<S>                                               <C>                               <C>
           DS-1                                    $150                              $300
------------------------------------------------------------------------------------------------------------------
           DS-3                                    $250                              $500
------------------------------------------------------------------------------------------------------------------
           OC-3                                    $600                             $1,000
------------------------------------------------------------------------------------------------------------------
           OC-12                                  $1,200                            $10,000
------------------------------------------------------------------------------------------------------------------
           OC-48                                  $3,500                            $25,000
------------------------------------------------------------------------------------------------------------------
</TABLE>

            Installation charges shall apply to the normal installation of
            equipment necessary to provide the requested service to the point of
            demarcation at the Customer's premises. Additional installation
            charges shall apply when Seller is required to install equipment
            other than that normally required to provide the service or when
            Customer requests special equipment.

            Non-recurring charges not described above will be considered special
            requests and will be handled on an individual case basis. All of the
            charges stated above are subject to change with thirty (30) days
            notice.

C.    Frame Relay Services

1.    Rates & Charges: Williams Network Frame Relay Service has four principal
      rate elements: Local Access, Port Connections, Permanent Virtual Circuits
      (PVCs), and Trunking charges.

      Port Connections and PVCs can be categorized as being either a
      User-to-Network Interface (UNI) type or Network-to-Network Interface (NNI)
      type. An NNI port is defined as one end of a connection between Seller's
      frame relay network and another carrier's network. The connecting carrier
      could be either a customer or off-net service provider. Similarly, an NNI
      PVC is defined as one which has each end of the PVC residing in two
      different carrier's frame relay networks, rather than the originating and
      terminating points being in the same carrier's network.

2.    Conventional Frame Relay Services:

      a. Local Access: Pricing for Local Access is determined in accordance with
      the Terms and Conditions set forth in Section 5.0 of the DSA.

      b. Port Connections: Both UNI and NNI port charges are based solely on the
      speed of the port selected by the Customer. Available port speeds range
      from 64 Kilobits per second (Kbps) to 1.536 Megabits per second (Mbps).
      Available speeds are set forth in Table C.1 below. Monthly recurring
      charges and installation charges for frame relay ports are set forth in
      Table C.1 below. Other non-recurring charges are set forth in Table C.3
      below.

--------------------------------------------------------------------------------
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<PAGE>

      c. Permanent Virtual Circuit (PVC) bandwidth charges: UNI and NNI PVC
      charges are both based solely on the bandwidth selected by Customer.
      Bandwidth charges are stated in Committed Information Rates (CIR) which
      are stated in Kbps increments for one-way (Simplex) PVCs. Available
      PVC-CIR speeds range from 4 Kbps to 1.024 Mbps. Available speeds are set
      forth in Table C.1 below. Monthly recurring charges and installation
      charges for Frame Relay PVCs are set forth in Table C.1 below. Other
      non-recurring charges are set forth in Table C.3 below.

      d. Trunking Charges: The trunking charge is for the communication line
      between the Williams Network switch and Customer's switch. The trunking
      charge is added to the rates set forth in Table C.1 below.

Table C.1 Monthly Recurring Charges (MRC) and Installation Charges

<TABLE>
<CAPTION>
    -----------------------------------------------------------------------------------
            Frame Relay Service                     Speed/CIR      MRC        Install
               Components                            (Kbps)
    ----------------------------------------------------------------------------------
    <S>                                              <C>           <C>        <C>
    UNI Ports                                          64          $117       $    250
                                              ----------------------------------------
                                                      128          $219       $    250
                                              ----------------------------------------
                                                      192          $239       $    250
                                              ----------------------------------------
                                                      256          $259       $    250
                                              ----------------------------------------
                                                      320          $320       $    250
                                              ----------------------------------------
                                                      384          $382       $    250
                                              ----------------------------------------
                                                      448          $476       $    250
                                              ----------------------------------------
                                                      512          $531       $    250
                                              ----------------------------------------
                                                      576          $569       $    250
                                              ----------------------------------------
                                                      640          $606       $    250
                                              ----------------------------------------
                                                      704          $643       $    250
                                              ----------------------------------------
                                                      768          $696       $    250
                                              ----------------------------------------
                                                     1024          $869       $    250
                                              ----------------------------------------
                                                     1536         $ 950       $    250
    ----------------------------------------------------------------------------------
    UNI PVCs                                            4            $5        $    25
                                              ----------------------------------------
    (Simplex Pricing)                                   8            $6        $    25
                                              ----------------------------------------
                                                       16            $7        $    25
                                              ----------------------------------------
                                                       32           $11        $    25
                                              ----------------------------------------
                                                       48           $17        $    25
                                              ----------------------------------------
                                                       64           $23        $    25
                                              ----------------------------------------
                                                      128           $46        $    25
                                              ----------------------------------------
                                                      192           $72        $    25
                                              ----------------------------------------
                                                      256           $96        $    25
                                              ----------------------------------------
                                                      320          $119        $    25
                                              ----------------------------------------
                                                      384          $143        $    25
                                              ----------------------------------------
                                                      448          $167        $    25
                                              ----------------------------------------
                                                      512          $195        $    25
                                              ----------------------------------------
                                                      576          $219        $    25
                                              ----------------------------------------
                                                      640          $244        $    25
                                              ----------------------------------------
                                                      704          $268        $    25
                                              ----------------------------------------
                                                      768          $293        $    25
                                              ----------------------------------------
                                                      832          $317        $    25
                                              ----------------------------------------
                                                      896         $325         $    25
                                              ----------------------------------------
</TABLE>

--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------

<PAGE>

<TABLE>
<CAPTION>
    -----------------------------------------------------------------------------------
                       Frame Relay Service     Speed/CIR        MRC           Install
                            Components          (Kbps)
    ----------------------------------------------------------------------------------
    <S>                                       <C>          <C>            <C>
                                                      960          $330        $    25
                                              ----------------------------------------
                                                     1024          $350        $    25
    ----------------------------------------------------------------------------------
       Local Access                           DS-0/DDS     ICB            ICB
                                              ----------------------------------------
                                              FT-1         ICB            ICB
                                              ----------------------------------------
                                              DS-1         ICB            ICB
    ----------------------------------------------------------------------------------
       NNI Trunking Charge                    DS-0/DDS     ICB            ICB
                                              ----------------------------------------
                                              FT-1         ICB            ICB
                                              ----------------------------------------
                                              DS-1         ICB            ICB
    ----------------------------------------------------------------------------------
</TABLE>

3.    Enhanced Frame Relay Service:

      Frame Relay/ATM Service Interworking:

      Frame Relay/ATM Service Interworking ("FRASI") gives Customer the ability
      to communicate seamlessly between ATM and Frame Relay locations. There is
      no additional charge for locations requiring ATM beyond the standard ATM
      charges set forth in Section A of this Pricing Schedule. Only Frame Relay
      PVCs can be used for FRASI service, as the smaller Frame Relay ports are
      unable to handle the higher bandwidth ATM PVCs.

4.    Additional Non-recurring Charges: In addition to the non-recurring
      installation charges set forth in Tables C.1 & C.2 above, Customer may
      incur additional non-recurring charges as set forth in Table C.3 below.

Table C.3

     ---------------------------------------------------------------------------
     Additional Non-Recurring Charges
     ---------------------------------------------------------------------------
     Description of Charge                                     Charge
     ---------------------------------------------------------------------------
     Configuration Changes                                     $50
     ---------------------------------------------------------------------------
     Order Cancellation Charge pre/post engineering prior to   $500/$1000
     circuit acceptance Order
     ---------------------------------------------------------------------------
     Local Access Change-post acceptance                       $500
     ---------------------------------------------------------------------------
     In addition to the Order Cancellation Charge, Customer will be required
     to reimburse Seller for any cancellation charges relating to Local Access
     or off-net service for which Seller is acting as agent.
     ---------------------------------------------------------------------------
     PVC Order Change Charge                                   $50
     ---------------------------------------------------------------------------
     Port Order Change Charge                                  $100
     ---------------------------------------------------------------------------

      Configuration charges are applied when the CIR of PVCs for Basic Frame
      Relay Service are changed or when Customer desires a change to the CIR of
      PVCs in an already established Flex

--------------------------------------------------------------------------------
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<PAGE>

      CIR Schedule (i.e. Customer will not be charged the $50 fee for changes to
      the CIR when establishing its initial Flex-CIR schedule).

      Order Cancellation Charges apply when a Customer cancels an order prior to
      its installation.

      Local Access Change Charges apply when local access services provided by a
      third party through Seller is moved or replaced with local access service
      to another location.

      PVC Order Change Charges apply after design, but prior to installation on
      a per PVC basis, when Customer makes a change to the PVC size ordered. If
      the PVC has been installed and accepted, Customer will be charged for a
      new PVC installation.

      Port Order Change Charges apply after design, but prior to installation on
      a per port basis, when Customer requests to change the port size ordered.
      If the Port has been installed and accepted, Customer will be charged for
      a new port installation.

D. F. Pricing General Conditions

1.    All pricing set forth in Sections A, B, and C above is Seller's current
      pricing. Such pricing is subject to change upon thirty (30) days written
      notice by Seller to Customer. Price changes shall only be effective on a
      going-forward basis and shall not apply to Service Orders previously
      placed by Customer and accepted by Seller.

2.    All current pricing is predicated on an anticipated volume of business
      from Customer that reflects current circuits on order and anticipated
      subsequent orders. During the Term of this Agreement, if the aggregate
      revenue (excluding Local Access charges ordered by Seller but including
      local access management fees as detailed in Section 5.0) for all existing
      circuits falls below a monthly minimum of $75,000.00, Seller reserves the
      right to increase port prices by ten percent (10%) for existing services
      to take effect immediately with thirty (30) days notice to Customer.

IN WITNESS WHEREOF, the parties hereto have executed this Williams Vyvx Services
Pricing Schedule as of the day and year first above written.

IBEAM BROADCASTING CORP.:                WILLIAMS VYVX SERVICES, a business
                                         unit of
                                         WILLIAMS COMMUNICATIONS, INC.:

/s/ Daniel Sroka                                /s/ Laura Kenny
---------------------------------------  ---------------------------------------
Signature of Authorized Representative   Signature of Authorized Representative

Daniel Sroka
---------------------------------------  ---------------------------------------
Printed Name                             Printed Name

Vice President
---------------------------------------  ---------------------------------------
Title                                    Title

--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------

<PAGE>

                                   Exhibit II

                 Williams Vyvx Services Technical Specifications

I.    Technical Specifications for ATM and Frame Relay Services

A.    The Technical Specifications set forth herein are stated as an objective
      that the ATM and Frame Relay Services will perform in accordance with
      prevailing telecommunications industry standards. All Service provided
      under Seller's ATM and Frame Relay Services are measured using two
      variables: Network Availability and Mean-time-to-restore.
      Mean-time-to-restore is discussed in the General Provisions of this
      Schedule.

B.    Availability.

      1.    Availability on Seller's Network. Availability is a measurement of
            the percent of total time that service is operative when measured
            over a 365 consecutive day (8760 hour) period. For ATM and Frame
            Relay Services on the Williams network, availability shall be 99.95%
            from point-of-presence ("POP") to POP measured over a one-year
            period.

      2.    Availability for Services not on Williams Network. For Services not
            on the Williams network, the off-net provider will establish
            availability. The Local Access availability standards for ATM and
            Frame Relay Services are established by the Local Access Provider.

      3.    See General Provisions for other factors affecting availability.

II.   Technical Specifications for Private Line Service

A.    Interconnection Specifications

      1.    DS-3. DS-3 service is provided in accordance with ANSI Standard
            T1.102 and T1.404. DS-3 Service operates at 44.736 Mbps.

      2.    Optical SONET Services (OC-N). Optical SONET Services are provided
            in accordance with ANSI Standard T1.105. OC-3 Service operates at
            155.520 Mbps and is configured with 3 separate STS-1 signaling
            paths. OC-3C Service operates at 155.520 Mbps and is configured with
            1 STS-3C signaling path (or 3 concatenated STS-1 signaling paths).
            OC-12 Service operates at 622.080 Mbps with 12 separate STS-1
            signaling paths. OC-12C Service operates at 622.080 Mbps with 1
            STS-12C signaling path (or 4 separate STS-3C signaling paths). OC-48
            Service operates at 2488.320 Mbps and is configured with 48 separate
            STS-1 signaling paths.

B.    Availability.

      1.    Availability on Williams Network. Availability is a measurement of
            the percent of total time that service is operative when measured
            over a 365 consecutive day (8760 hour) period. DS-3 and Optical
            SONET Service is considered inoperative when there has been a loss
            of signal or when two consecutive 15 second loop-back tests confirm
            the observation of a bit error rate equal to or worse than 1 x 10-6.
            For Services on the

--------------------------------------------------------------------------------
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<PAGE>

            Williams network, availability shall be 99.95% from POP to POP
            measured over a one-year period.

      2.    Availability for Services not on Williams Network. For Services not
            on the Williams network, the off-net provider will establish
            availability. The Local Access availability standards for DS-3 and
            Optical SONET Services are established by the Local Access Provider.

      3.    See General Provisions for other factors affecting availability.

B.    Performance (% Error Free Seconds, while Available).

      1.    Error Free Seconds on Williams Network. Performance is noted in
            Error Free Seconds, which are a measure of the percentage of total
            seconds that do not contain bit errors when measured over a
            consecutive 24-hour period. Performance shall be measured on a
            one-way basis using a Pseudo Random Bit Sequence test pattern as
            defined in CCITT Recommendation 0.151. For Services on the Williams
            network, Error Free Seconds shall be 99.5% from POP to POP measured
            over a monthly period

      2.    Error Free Seconds for Services Not on Williams Network. The Error
            Free Seconds standards for the Local Access for DS-3 and Optical
            SONET Service is established by the Local Access Provider. For
            Services not on the Williams network, the off-net provider will
            establish Error Free Seconds.

III. General Provisions Relating to Technical Specifications

A.    Quality Standards.

      1.    Standards apply on a one-way basis between Williams Point(s) of
            Presence (POP) only.

      2.    All standards exclude nonperformance due to force majeure or planned
            interruptions for necessary maintenance purposes.

      3.    All standards exclude nonperformance due to acts or omissions of
            Customer or due to any failure of Customer-provided equipment.

      4.    General. DS3 and Optical SONET Service standards apply on a one-way
            basis between the Customer Premises Network Interface Points
            ("CPNIP") which are connected to Local Access between which DS3 and
            Optical SONET Interexchange Service is provided (CPNIP TO CPNIP or
            End-to-End) and exclude nonperformance due to force majeure or
            planned interruptions for necessary maintenance purposes. Customer
            provided equipment, dependent upon the type and quality of Customer
            equipment used, may affect the actual end-to-end availability and
            performance of DS-3 and Optical SONET Service. (Customer provided
            Local Access may not meet these specifications.)

--------------------------------------------------------------------------------
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<PAGE>

B     Maintenance

      1.    Williams will undertake repair efforts on equipment or fiber when
            Williams first becomes aware of it, or when notified by Customer and
            Customer has released all or part of the Service for testing. The
            maintenance standards in this Section III B only apply for Equipment
            or Fiber on Williams' owned and operated network and from Williams'
            POP to Williams' POP.

      2.    Mean Time to Restore (MTTR) is the average time required to restore
            service and resume availability and is stated in terms of equipment
            and cable outages. The time is measured from the moment the outage
            is reported until the service is available. MTTR Objectives are:

            a.    ATM, Frame Relay, Private Line, Transit IP, and Dedicated IP
                  Services:

                        2 hours Network Equipment
                        6 hours First Fibers on Cable

            b.    Optical Wave Services:

                        24 hours Network Equipment
                        10 hours First Fibers on Cable

C.    Calculation. Williams Network calculates network availability upon written
      request from customers. Customer must notify the Williams Vyvx Services
      Customer Care department and initiate an action request to determine if
      the standards stated above were met.

--------------------------------------------------------------------------------
stddoc                                                            Page 27 of 31
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<PAGE>

Exhibit III             Williams Vyvx Services Order Form               Order #

                                                                      Cust. PON:
--------------------------------------------------------------------------------
Order Date                Sales Rep:                      Cust. Reference #:
Requested Due Date:       Sales Rep Phone:                Price QuoteRef #1:
                          Circuit Term:                   Price Quote Ref #2:

          Customer  Information                             Billing Information

  Customer:                                      Billing Contact:
  Customer Contact:                              Billing Address:
  Address:                                       Billing City:
  City:                                          Billing State:
  State:                      Zip:               Billing Zip Code:
  Phone:                                         Billing Phone:
  Fax:                                           Billing Acct #:
  Email:

--------------------------------------------------------------------------------
                                   LOCAL LOOP
--------------------------------------------------------------------------------

 Service Request:   Stop Bill Date:    Loop Circuit I.D. (If Existing Loop):
 Interval:          Expedite Date:     Local Loop Type/Speed:
 Jack Type:         Diversity:        * Framing C Bit:                    Via:

 NPA:      NXX:                       * PLCP:                             Inside
Wiring:
 End User Name:                                 Preferred Local Access Vendor:
 End User Address:                              Collocate Assignment:
 Building:            Floor:      Room #:       On-Site Contact Name:
 City:                State:      Zip:          On-Site Contact Phone:
                                                On-Site Contact Email:
 Access Hours:                                  Line Coding:
 * Note: DS3 Only                               Framing:

--------------------------------------------------------------------------------
                                    PORT/NODE
--------------------------------------------------------------------------------

 Port/Node:             Service Request:                Requested Port Speed:
 Circuit ID:            Port Type:                      Flex-UNI (Yes or No):

--------------------------------------------------------------------------------
                                      PVCs
--------------------------------------------------------------------------------

                           PVC 1 PVC 2 PVC 3 PVC 4 PVC 5 PVC 6 PVC 7 PVC 8 PVC 9

New, Change or Disconnect
VPC or VCC
QoS (CBR, VBR, ABR, UBR)
Source VPI/VCI
Flat Rate or Usage Based
Pt-to-Pt or
 Pt-to-Multipoint
PVC CIR (Mbps)
Circuit I.D. (Change && Disc.)
UNI PVC
NNI PVC
Destination Port City
Destination VPI/VCI
Destination Port Circuit ID
Dest. Port Speed (Mbps)
Full Duplex PVC
Simplex PVC

--------------------------------------------------------------------------------
stddoc                                                            Page 28 of 31
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<PAGE>

                            Williams Vyvx Service Order                 Order #:

                                                                       Cust PON:
--------------------------------------------------------------------------------
                                 Circuit Pricing
--------------------------------------------------------------------------------

<TABLE>
<CAPTION>
<S>                                         <C>                            <C>                  <C>              <C>
  Local Access/Backhaul Pricing                                            Price Quote
                  Location                  Vendor     Local Loop Speed    Installation         VH Miles         Monthly Recurring

  Port Pricing                                 Price Quote
     Port Size              Installation(NRC)     Monthly Recurring (MRC)           Total

  Other Charges
    Disconnect Charge:
    Expedite Charge:                          Expedite Charge Description:
    Ancillary Charge:                         Ancillary Charge Description:
    Misc. Charge:                             Misc. Charge Description:

  PVC Pricing                                                                                        Totals
                                                                                                     Other Chgs:
     PVC           Install Fee     PVC CIR      Price Per MB       Discount %      MRC Total ($)
      1                                                                                              L.A. Install:
      2                                                                                              Port Install:
      3                                                                                              PVC Install:
      4                                                                                               Total Install:
      5
                                                                                                      L.A. MRC:
      6
                                                                                                      Port MRC:
      7
                                                                                                      PVC MRC:
      8
                                                                                                      Total MRC:
      9

Notes/Special Instructions:iBEAM Design Approval:                       Date:
------------------------------------------------------------------------------------------------------------------
</TABLE>

" " " " " " iBEAM hereby represents more than 10% of the iBEAM's use of
            Service and/or circuit provided by Williams pursuant to this Order
            will be interstate telecommunications. If it is determined at any
            time that such interexchange Service or circuit is subject to state
            regulation, the interexchange Service or circuit may be provided by
            Williams or its affiliates, pursuant to applicable state laws,
            regulations and applicable tariffs. All service is provided in
            accordance with the Customer's Letter of Intent, or Customer's Data
            Services Agreement #_____________or if no agreement exists between
            Williams and Customer, then Williams' standard terms and conditions,
            and any applicable Williams tariff will apply.

-------------------------------------------------------------------------------
VYVX AUTHORIZING SIGNATURE   iBEAM BROADCASTING CORPORATION AUTHORIZED SIGNATURE

Print Name            Date              Print Name            Date

                                   Exhibit IV

--------------------------------------------------------------------------------
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<PAGE>

             Williams Vyvx Services Troubleshooting Procedure-iBEAM
                                  July 11, 2000

For all iBEAM circuits on the Williams Network, a Trouble Reporting Contact
number and procedure are listed below. Williams Vyvx Services Control Center
will take and verify the customer information and transfer the call to the
Williams Network Control Center (CNMC) in Sacramento. . Information required
from iBEAM is listed below as well. Williams Network Control Center in
Sacramento ("CNMC") will actively coordinate the resolution of trouble on iBEAM
circuits directly with the Customer and strive to identify, isolate and resolve
outages and communicate the status of resolution to iBEAM in such a manner as to
minimize the impact of outages on iBEAM circuits.

Contact Information:

Vyvx NCC in Tulsa Oklahoma staffed 24x7x365-- Call 1-800-888-6771

      iBEAM will give Vyvx Technician the following information: Customer, Name,
Affected City Pairs, and/or Williams Network Circuit Numbers of affected
circuit/s (TWC#) and iBEAM NOC call back number.

      Vyvx Technician will immediately call WCG Sacramento NCC and transfer the
information and call. Vyvx technician will state customer of record is iBEAM.
Vyvx technician will open a trouble ticket within Vyvx for information purposes
only with appropriate time and date stamps for record keeping and notes from
Sacramento on trouble and resolution.

      Sacramento NCC will troubleshoot the TWC Circuit according to the
established procedures and handle the customer contact as primary interface from
this point forward. Vyvx personnel will stay informed of circuit outages and
resolution progress on all open tickets.

1.1.1 CNMC personnel will confirm outages with iBEAM technician and open trouble
      ticket with actual date and time of outage, record TWC#'s and other
      information necessary to troubleshoot circuit. Supervisor on Duty will be
      immediately notified that this is an iBEAM circuit and Supervisor will
      assign a technician to work the trouble to resolution.

1.1.2 CNMC personnel will retrieve all relevant data on the circuit from TBS
      database and utilize circuit information to perform verification of
      service. CNMC Personnel will notify iBEAM whether WCG is customer of
      record on the Local Exchange Carrier portion of circuit immediately so
      iBEAM can coordinate the cooperative testing with appropriate LEC
      troubleshooting personnel.

1.1.3 CNMC personnel will actively work ticket and perform such necessary tests
      to isolate trouble and communicate this to relevant parties within WCG
      responsible for resolution of affected areas. This includes LEC group and
      ATM Network Group. CNMC will coordinate the resolution of ticket and
      maintain communications with Customer.

1.1.4 If at this time it is determined that there is no trouble and iBEAM is in
      agreement, the ticket will be

--------------------------------------------------------------------------------
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<PAGE>

        closed out and reported date and time of circuit restoration will be
        recorded.

1.1.5   If there is ATM trouble iBEAM will be given a ticket number and an
        expectation of when they will be either informed of repair and/or update
        status.

1.1.6   If trouble is determined to be in the Local Access portion of the
        circuit, CNMC personnel, with iBEAM's consent, if necessary, will work
        the problem with the LEC Repair Service Center. Local Exchange Carrier
        records will be accessed on the Circuit Layout Report and TBS database
        and Williams Network will coordinate such resolution when WCG is the
        customer of record with the associated LEC for this circuit. In the case
        where another party owns the LEC order, WCG will perform end to end
        testing of circuits and coordinate resolution of troubles as required
        from iBEAM or Local Exchange Carrier technical personnel as needed.

1.1.7   If the trouble is determined to be in the "Network" portion of the
        circuit, the CNMC personnel will then perform such test to isolate which
        workgroup in Williams to refer trouble for further testing and
        resolution.

1.1.8   Outages of long duration may require escalations to expedite resolution.
        Escalation procedures and contacts will be followed and noted in the
        ticket log. Every attempt will be made to resolve circuit problems and
        inform customer of progress to this end in a timely manner.

1.1.9   Once the LEC or the On-Net provider has cleared the trouble the CNMC
        personnel will then retest where possible and contact iBEAM to test end
        to end and resolve the trouble reported. The CNMC then will close out
        the trouble ticket following established procedures and confirmation by
        iBEAM that circuit is back in operation. If circuit is tested good
        through LEC Demarcation by Williams and the associated LEC and iBEAM
        either does not acknowledge resolution of the problem, is not available
        for testing or for some other reason does not respond, the trouble
        ticket will be so noted along with the time of resolution, and the
        ticket will be placed in "awaiting customer call back" status for
        delayed maintenance. Within 24 to 48 hours of resolution of the trouble
        and after a reasonable number of attempts to close the ticket with the
        customer, CNMC will notify customer that the ticket will be closed by
        the end of the business day unless Customer contacts CNMC for further
        testing. CNMC will note in the trouble ticket the time circuit tested
        good and inform Vyvx NCC of ticket status, time of resolution and any
        Customer concerns.

1.1.10  Vyvx NCC will update their trouble ticket with the relevant notes, times
        and make a final disposition for records keeping, score carding and any
        possible outage credits due customer.

1.1.11  These procedures may be updated from time to time to ensure ongoing
        efficiencies.

--------------------------------------------------------------------------------
stddoc                                                            Page 31 of 31
1-CSA 991216.doc           Williams Communications - Proprietary & Confidential
--------------------------------------------------------------------------------

<PAGE>

                                   AMENDMENT 1
                       Data Services Agreement #01R0470.00

THIS AMENDMENT 1 ("Amendment") is made and entered into this ___ day of June,
2001, by and between Vyvx Broadband Media (formerly Williams Vyvx Services), a
business unit of Williams Communications, LLC ("Vyvx"), and iBEAM Broadcasting
Corporation ("Customer").

WHEREAS, Vyvx and Customer are parties to that certain Data Services Agreement,
dated March 19, 2001, Contract #01R0470.00 (the "Agreement"); and

WHEREAS, effective January 1, 2001, Williams Communications, Inc., became
Williams Communications, LLC, a Delaware limited liability company; and

WHEREAS, Vyvx and Customer desire to amend the Agreement;

NOW, THEREFORE in consideration of the foregoing premises and mutual promises
and covenants of the parties hereto, the receipt and sufficiency of which is
hereby acknowledged, Vyvx and Customer agree to amend the Agreement as follows:

1.    Section 2.0 of the Agreement (Description of Services) shall be amended to
      add the following additional Services, as defined in the Agreement:

            2.1 Description of Dedicated Internet Service (Transit and
            Non-transit):

            Definition of Transit:

                  Transit IP traffic, i.e. off-net, is traffic that exits WCG
            network via a provider and terminates at an end-user not connected
            to that provider's network or any of their customer's networks.

                  Non-transit traffic, i.e. on-net, is traffic that exits WCG
            network via a provider and terminates at an end-user directly
            connected to that provider's network or one of their customer's
            networks.

            Dedicated Internet Service (Transit and Non-transit) provides a
            Customer with a dedicated high-speed connection to the Internet.
            Dedicated Internet Access Service is offered at speeds from DS1 to
            GigE. Customers can choose Flat Rate, Tiered Rate or Burstable Rate
            billing options. Also available are IP addresses and/or secondary
            DNS requirements and USENET newsfeeds. Dedicated Internet Service
            can be configured as Private Line, Frame Relay, ATM, or
            Packet-over-SONET in order to allow the Customer to run the same
            protocol across its network (i.e. if Customer currently has a frame
            relay network, the Dedicated Internet Service Customer orders from
            Seller can be configured as frame relay). Dedicated Internet Service
            only provides Customer with access to the Internet and to other
            Dedicated Internet Access customers within the Vyvx Network and does
            not provide Customer with connectivity to other Customer sites that
            are not connected to the Internet. Seller offers several options for
            Customer's connectivity to the Internet, which options are more
            specifically described in the Technical Specifications

Amendment 1 to DSA                                                        Page 1

<PAGE>

            and Connectivity Options for Dedicated Internet Service set forth in
            Exhibit II. Customer will specify its connectivity option on
            Customer's Service Order for Dedicated Internet Service.

2.    Exhibit I to the Agreement (Williams Vyvx Services Pricing Schedule) shall
      be amended to add the additional pricing for Services set forth in
      Attachment A hereto.

3.    Exhibit II to the Agreement (Williams Vyvx Services Technical
      Specifications) shall be amended to add the additional technical
      specifications for Services set forth in Attachment B hereto.

4.    Except as specifically amended herein, all terms, conditions and
      provisions contained in the Agreement shall remain unchanged and in full
      force and effect.

IN WITNESS WHEREOF, the parties have executed this Amendment 1 on the day and
year first above set forth.

 VYVX BROADBAND MEDIA, a business          IBEAM BROADCASTING
 unit of WILLIAMS COMMUNICATIONS, LLC      CORPORATION

 /s/ John C. Bumgarner                     /s/ Peter Desnoes
 --------------------------                --------------------------
 Signature                                 Signature

                                           Peter Desnoes
 --------------------------------------    -------------
 Print Name                                Print Name

                                           CEO
 --------------------------------------    ---
 Title                                     Title

                                           July 9, 2001
 --------------------------------------    ------------
 Date                                      Date

Amendment 1 to DSA                                                        Page 2
<PAGE>

                                  ATTACHMENT A
                              To Amendment 1 to DSA

The following shall be added to Exhibit I (Williams Vyvx Services Pricing
Schedule) as additional pricing for Services:

D.    Dedicated Internet Service

1.    Recurring Rates & Charges

1.1

1.1   Dedicated Internet Access Rate Pricing. For Dedicated Internet Access Rate
      pricing, the monthly recurring charge is $225 per Mbps per month with a
      minimum volume of 1000Mbps per month. Dedicated Internet Access pricing
      for IP transit below 1000Mbps per month will be $325per Mbps per month not
      to exceed $250,000. The Dedicated Internet Access volume will be measured
      as the higher of either inbound or outbound traffic measured at the 95%
      percentile. To attain this measurement, the customer's traffic is sampled
      every 3 minutes and aggregated in 15 minute increments to obtain the usage
      activity for the month. These measurements are recorded in a database. At
      the end of the billing cycle, the highest 5% of samples are deleted. (So,
      if there are 2,976 samples in a month, then delete the highest 149.) The
      Customer agrees to a minimum commitment of 400Mbps per month of total
      Dedicated Internet Access volume.

1.5   Monthly Recurring Cross Connect Charge. Monthly Recurring Cross Connect
      Charges may apply to connections between Customer Equipment, Seller
      facilities and network, and the equipment or cable of third parties. The
      Monthly Recurring Cross Connect Charges are set forth in Table D.4.

<TABLE>
<CAPTION>
      -------------------------------------------------------------------------------------------
      Table D.4                                     DS-1     DS-3      OC-3     OC-12     GigE
      -------------------------------------------------------------------------------------------
      <S>                                           <C>      <C>       <C>      <C>       <C>
      Monthly Recurring Cross Connect Charges       150       250      1000      1000     1000
      -------------------------------------------------------------------------------------------
</TABLE>

1.6   Pricing. Pricing for the provision of Dedicated Internet Service shall be
      as set out in this Schedule and is subject to change for one year from the
      effective date per the terms of Exhibit I of the Agreement. It is the
      intent of the Parties that iBEAM should receive favorable pricing for
      Services, in keeping with the volume of Services purchased by iBEAM and
      other relevant market factors. Williams and iBEAM agree to review pricing
      for Services each calendar year. The standard for when pricing should be
      adjusted shall be whether the overall market price for Dedicated Internet
      Access in the United States has either fallen by a significant amount
      below Williams' rates or risen by a significant amount above Williams'
      rates.

      Pricechanges shall only be effective on a going-forward basis and shall
      not apply to Service Orders previously placed by Customer and accepted by
      Seller prior to the effective date of the respective price change.

2.    Non-Recurring Rates & Charges

2.1   Non-Recurring Charges. Non-Recurring Charges may be incurred for Dedicated
      Internet Services. Non-Recurring Charges are set forth in Table D.5 below.

<TABLE>
<CAPTION>
      -----------------------------------------------------------------------------------------------------------
      Table D.5               Non-Recurring Charges      DS-1        DS-3        OC-3       OC-12        GigE
      -----------------------------------------------------------------------------------------------------------
      <S>                                                <C>         <C>         <C>        <C>        <C>
      New Order Installation                             $500      $1,500      $4,000      $8,000      $6,000
      -----------------------------------------------------------------------------------------------------------
      Change Of Service Date Charge (1st change free)    $25         $50       $2,000      $4,000       $8000
      -----------------------------------------------------------------------------------------------------------
      Port Order Change Charge                           $100       $100        $100        $100        $100
      -----------------------------------------------------------------------------------------------------------
      Configuration Changes                              $50         $50         $50         $50         $50
      -----------------------------------------------------------------------------------------------------------
      Change Of Service Order Charge
      -----------------------------------------------------------------------------------------------------------
           Pre-engineering                               $160       $800       $2,400      $4,800       $9600
      -----------------------------------------------------------------------------------------------------------
           Post-engineering                              $320      $1,600      $4,800      $9,600      $19,200
      -----------------------------------------------------------------------------------------------------------
      Order Cancellation
      -----------------------------------------------------------------------------------------------------------
           Pre-engineering                               $200      $1,000      $3,000      $6,000      $12,000
      -----------------------------------------------------------------------------------------------------------
           Post-engineering                              $400      $2,000      $6,000      $12,000     $24,000
      -----------------------------------------------------------------------------------------------------------
      Access Service Request (ASR) Special Access        N/A        $250        $250        $250        $250
      -----------------------------------------------------------------------------------------------------------
      Access Service Request (ASR) Supplement            $150       $150        $150        $150        $150
      -----------------------------------------------------------------------------------------------------------
      Order Expedite                                     $300       $300        $300        $300        $300
      -----------------------------------------------------------------------------------------------------------
</TABLE>

Amendment 1                                                               Page 2

<PAGE>

<TABLE>
<CAPTION>
      -----------------------------------------------------------------------------------------------------------
      Table D.5               Non-Recurring Charges      DS-1        DS-3        OC-3       OC-12        GigE
      --------------------------------------------------------------------------------------------------------

      -----------------------------------------------------------------------------------------------------------
      <S>                     <C>                        <C>         <C>         <C>        <C>        <C>
      Cross Connect Install Charge                       $300       $750       $1,000      $1,500       $2000
      -----------------------------------------------------------------------------------------------------------
      In addition to the above charges, Customer is required to reimburse
      Williams for any Third Party Provider charges relating to Customer's
      service. Non-Recurring Charges not described above will be considered
      special requests and will be handled on an individual case basis. All of
      the charges stated above are subject to change with thirty (30) calendar
      days notice. A complete description of the above charges is published at
      http://www.williamscommunications.com/network/customer-service/process-policy.html.
      -----------------------------------------------------------------------------------------------------------
</TABLE>

2.2   Miscellaneous. Customer should be aware that from time to time,
      third-party charges are levied to Seller after submission of the original
      Service Order from Customer. Seller may be obligated to pass these charges
      to Customer. Seller will inform Customer of any such charges before the
      charges are passed to Customer. Seller cannot commit that all charges
      related to any requested Service will always be on the original Service
      Order.

Amendment 1                                                               Page 3
<PAGE>

                                  ATTACHMENT B
                              To Amendment 1 to DSA

The following shall be added to Exhibit II (Williams Vyvx Services Technical
Specifications) as additional Technical Specification for Services:

IV.   Dedicated Internet Service

A.    Connectivity Options.

            (1) DS1 Frame Relay: DS1 Services will connect into Seller's POP on
            a channelized DS3. Seller's entrance facilities will have a logical
            port created for Customer on DS3/1/0 card on ATM Switch. This
            logical port will be used to create a PVC to Seller's access router
            using frame relay (or PPP) to ATM service internetworking.

            (2) DS1 Point-to-Point (PPP): If Customer orders DS1 PPP, Customer
            will terminate on Seller's entrance facilities via a channelized DS3
            card. One logical port will be configured for Customer on the DS3
            Frame card on ATM Switch. Seller will provide a PVC from this
            logical port to the ATM UNI logical port on Seller's access router.

            (3) DS3 ATM: If Customer orders DS3 ATM connectivity, Customer's
            circuit will be terminated on Seller's entrance facilities at
            Seller's POP.

            (4) DS3 Frame Relay: If Customer orders DS3 Frame Relay
            connectivity, Customer will be connected directly to the entrance
            facilities at Seller's POP.

            (5) DS3 Point-to-Point (PPP): If Customer orders DS3 PPP
            connectivity, Customer's Dedicated Internet Service will connect to
            the entrance facilities at Seller's POP on an optical interface.

            (6) OC3 ATM: If Customer orders OC3 ATM connectivity, Customer's
            circuit will be terminated on Seller's entrance facilities at
            Seller's POP. One logical port will be configured for Customer.
            Seller will provide a PVC from this logical port to the ATM UNI
            logical port on Seller's access router.

            (7) OC3 Packet-over-SONET (PoS): If Customer orders OC3 POS
            connectivity, Customer's circuit will be terminated on Seller's
            entrance facilities at Seller's POP. Seller will provide a dedicated
            POS circuit from the entrance facility to the POS port on Seller's
            access router.

            (8) OC12 ATM: If Customer orders OC12 ATM connectivity, Customer's
            circuit will be terminated on Seller's entrance facilities at
            Seller's POP. One logical port will be configured for Customer on
            ATM Switch. Seller will provide a PVC from this logical port to the
            ATM UNI logical port on Seller's access router.

            (9) OC12 Packet-over-SONET (PoS): If Customer orders OC12 POS
            connectivity, Customer's circuit will be terminated on Seller's
            entrance facilities at Seller's POP. Seller will provide a dedicated
            POS circuit from the entrance facility to the POS port on Seller's
            access router.

            (10) Gigabit Ethernet (GigE): If Customer orders GigE connectivity,
            Customer's circuit will be terminated on Seller's entrance
            facilities at Seller's POP or Data Center. Seller will provide a
            dedicated Gig Ethernet from entrance facility to the collocated or
            customer rack to Seller's switch or router. Connector will be multi
            mode fiber with SC connector.

B.    Network Availability. Network Availability is a measurement of the percent
      of total time that service is operative when measured over a 30 day
      period. Seller's Network availability for Dedicated Internet Services
      shall be 99.999% at Seller's Santa Clara, Herndon, and Tulsa Internet Data
      Centers measured over a thirty-day period. Seller will undertake repair
      efforts on equipment or fiber when Seller first becomes aware of it, or
      when notified by Customer and Customer has released all or part of the
      Service for testing. The standards by which Seller's Dedicated Internet
      Services is measured apply on a one-way basis between Seller's POPs only.
      Seller does not guarantee the availability of local loops.

C.    Meant Time to Restore ("MTTR"). MTTR shall be the average time required to
      restore service and resume availability and is stated in terms of
      equipment and cable outages. The time is measured from the moment the
      outage is reported until the service is available. With respect to
      Dedicated Internet Service, Seller has an objective of repairing network
      equipment within an average of two (2) hours for Priority 1 outages and
      four (4) hours for Priority 2 outages and an objective to have the first
      fiber on a cable cut restored within an average of six (6) hours. Seller
      will undertake repair efforts on equipment or fiber when Seller first
      becomes aware of the problem, or when notified by Customer and

Amendment 1                                                               Page 4

<PAGE>

      Customer has released all or part of the Service for testing. The
      maintenance standards in this Section only apply for equipment or fiber on
      Seller's owned and operated network and from Seller's POP to Seller's POP.
      Vyvx and Customer will work to define Priority 1 and Priority 2 outages
      within 30 days after the effective date.

D.    Latency. Latency is measured as the round trip time, averaged over a month
      (720 hours/month), required for a packet (100 bytes) to travel between
      Seller Core IP POPs (Seller IP Core Access Router to Seller IP Core Access
      Router). For Services on Seller's Network, Latency will be less than 55 ms
      maximum average round trip, not to exceed 100 ms peak between Core IP POPs
      when averaged over a one month period (720 hours). The SLA Latency is the
      average of mean latency values for IP Core POP City pairs. The customer
      will be provided monthly a matrix of Core IP City Pairs and averaged
      latency times between these pairs. The worst time from this matrix is the
      peak latency.

E.    Packet Loss. Packet Loss is measured as the percentage of 100 byte packets
      at 5 iterations of 100 trials, averaged over a month (720hours) lost
      between Seller Core IP POPs (Seller IP Core Access Router to Seller IP
      Core Access Router). For Services on Seller's Network, Packet Loss will be
      less than 1% averaged over a month period (720 hours) between Seller's IP
      Core POPs. The customer will be provided monthly a matrix of Core IP City
      Pairs and averaged percentages of Packet Loss between these pairs. The SLA
      Packet Loss is the worst percentage of packet loss from said matrix.

Amendment 1                                                               Page 5Exhibit 10.5

                                                        Agreement No.___________

[LOGO OF WILLIAMS]

                          Teleport Services Agreement

This is an agreement between Williams Vyvx Services, a business unit of Williams
Communications, Inc. ("Williams") and iBEAM Broadcasting Corporation
("Customer"), dated as of December 13, 1999, in connection with teleport
services to be provided by Williams from Williams Vyvx Teleport New York as its
primary signal path and Williams Vyvx Teleport Los Angeles as its redundant
signal path  (the "Teleport(s)") to Customer (the "Agreement").  The terms of
this Agreement are as follows:

1.   SERVICES. Williams shall provide Customer with the Teleport services as
     further described on Exhibit A-1 attached hereto and made a part hereof
     (collectively referred to herein as the "Services"). From time to time and
     subject to availability, changes may be made in the Services which will be
     reflected in amendments to the applicable Exhibit A or the addition of
     additional Exhibit As. Each amendment shall be executed by authorized
     individuals of both parties. Each Exhibit A shall be part of this Agreement
     and incorporated herein. All Exhibit As shall be sequentially numbered for
     ease of identification, e.g., Exhibits A-1, A-2, A-3 and so forth.

2.   TERM. Upon signature by both parties this Agreement shall become effective
     on the date first set forth above and shall continue in effect until the
     expiration of any Exhibit A attached hereto (the "Term").

3.   LATE PAYMENT. If any payment is not received by Williams within 30 days
     after the date of invoice (the "Due Date"), then such overdue amount shall
     be subject to late payment charges at the lower of 18% per annum or the
     highest legally permissible rate of interest until the date payment is
     actually received. If Customer in good faith disputes any portion of an
     invoice it must pay the undisputed amount of the invoice on or before its
     Due Date and provide written notice to Seller of the billing dispute at or
     before the time of payment. Such notice must include documentation
     substantiating the dispute. Customer's failure to notify Seller of a
     dispute within one hundred-twenty (120) days after the Due Date shall be
     deemed to be Customer's acceptance of such charges. The parties will make a
     good faith effort to resolve billing disputes as expeditiously as possible.
     If a dispute is resolved in favor of Customer, Customer shall receive an
     adjustment on its next bill.

4.   SUSPENSION RIGHT. In the event that Customer has failed to pay any
     undisputed amount when due, Williams shall have the right to suspend
     Services. Williams shall only exercise this Suspension Right by first
     providing Customer with ten business days' written notice by facsimile. If
     Williams receives payment from Customer of all amounts due within the ten-
     day notice period, then Customer's Services shall not be suspended.
     Suspension of Services does not affect Customer's obligation to pay the
     Service Charges through the Term of this Agreement unless Customer
     exercises its termination right as described in this Section 4. In the
     event Williams suspends Customer's Services, Customer shall have the right
     but not the obligation to terminate this Agreement at its sole discretion.
     Customer's liability with respect to such termination shall be an amount
     equal to twelve (12) months of Service from the date of termination
     multiplied by the then current monthly Total Service Charge or an amount
     equal to the number of months remaining in the Term multiplied by the then
     current monthly Total Service Charge, whichever is less.

5. TERMINATION.

5.1  Customer shall have the right to terminate this Agreement upon a minimum of
     thirty (30) days' written notice. This right to terminate may only be
     exercised due to one of the following two circumstances:

                                                                   Page 1 of 27
<PAGE>

     a.  Monthly Interruptions exceed 43 minutes in three (3) consecutive
         calendar months; or

     b.  A second Daily Interruption in excess of 24 consecutive hours (after
         the first Daily Interruption in excess of 24 consecutive hours).

     Customer must exercise its right to terminate pursuant to this Section 5.1
     within thirty (30) days of the circumstance giving rise to Customer's right
     to terminate. This right to terminate is Customer's only right to terminate
     due to excessive Interruptions, and Customer may not invoke the general
     termination right as set forth in Section 5.2 due to Interruptions.

5.2  Either party may terminate this Agreement due to a material breach of this
Agreement by the other party. The non-breaching party shall provide written
notice to the breaching party of the alleged breach, and the breaching party
shall have sixty (60) days to cure the breach. If the breach has not been cured
within this sixty-day period, then the non-breaching party may terminate upon
thirty (30) days' written notice. Customer shall pay Williams in accordance with
this Agreement for all Services performed up to and including the effective date
of termination.

6. TAXES. Customer acknowledges and understands that all charges are computed
   exclusive of any applicable federal, state or local use, excise, gross
   receipts, sales and privilege taxes, duties, fees or similar liabilities
   (other than general income or property taxes), including without limitation,
   any tax or charge levied to support the Universal Service Fund contemplated
   by the Telecommunications Act of 1996, whether charged to or against
   Williams, its suppliers or affiliates or Customer for the Service provided to
   Customer ("Taxes"). Such Taxes shall be paid by Customer in addition to all
   other charges provided for herein.

7. OUTAGE ALLOWANCE.

7.1  Calculation of Outage Allowance. If applicable, Williams shall grant
     Customer an Outage Allowance for Services as follows:

        (a)  For purposes of this Agreement an interruption to Services
             ("Interruption") will be deemed to have occurred when Services are
             either not provided at all or fail to meet the requirements of the
             Agreement for a period of ten aggregate minutes on any given
             calendar day (the "Daily Interruption") or forty-three (43)
             aggregate minutes in any given calendar month (the "Monthly
             Interruption"). An Interruption begins the earlier of when Customer
             notifies Williams of the Interruption or when Williams is actually
             aware of the Interruption or constructively aware through
             recordation of the Interruption in Williams' log files. An
             Interruption will be considered to have ended when Services in
             accordance with this Agreement have been restored.

       (b)   In the event that Williams has a Daily Interruption as set forth in
             Section 7.1(a) herein, Customer shall receive a credit for the day
             the Daily Interruption occurred. Such credit shall include all fees
             for the day containing the Daily Interruption related to the
             Primary uplink (the "Uplink Outage Allowance"), which represents
             62.5% of the total daily uplink fee.

       (c)   In addition to the Uplink Outage Allowance, a credit will be
             provided to Customer by Williams based on the outage formula below
             for the actual outage minutes related to the Space Segment (the
             "Space Segment Outage Allowance").

Space Segment Outage Allowance = Interruption (in Minutes) x Transponder Charge
                                 ----------------------------------------------
                                   43,200 (deemed number of minutes per month)

      (d)   In the event Williams has a Monthly Interruption as set forth in
            Section 7.1(a) herein, Customer

                                                                    Page 2 of 27
<PAGE>

            shall receive a credit for the month in which the Monthly
            Interruption took place. Such credit will include an Uplink Outage
            Allowance as defined herein for the month containing the Monthly
            Interruption. If Customer receives a credit for a Monthly
            Interruption, Customer shall not receive credits for any Daily
            Interruptions which occurred during the month in which the Monthly
            Interruption occurred.

  7.2  Audio/Video. Intentionally Left Blank.

  7.3  Exceptions to Outage Allowance. In no case shall an Outage Allowance be
       made for any Interruption that is a result of, or attributable in whole
       or in part to:

       (a)  Any failure on the part of Customer to perform its material or
            operational obligations pursuant to this Agreement;

       (b)  The failure of Customer's Signal provided by Customer or by carriers
            other than Williams;

       (c)  The failure of transmission lines, equipment, or other facilities
            provided by the Customer;

       (d)  The failure or nonperformance of any earth station not provided by
            Williams;

       (e)  Reasonable periodic maintenance as approved in advance by Customer,
            provided Williams provides Customer with 72 hours advance notice of
            such maintenance and cumulative maintenance time does not exceed two
            (2) hours per calendar month;

       (f)  Interference from third party transmission or usage;

       (g)  Cooperative testing;

       (h)  Sun transit outage or rain fade; or

       (i)  Any other act or failure to act by Customer.

  7.4  Credit Memoranda.  Interruptions and Outage Allowances shall be
       acknowledged by Williams through the issuance of credit memoranda.  Such
       memoranda shall be issued within fifteen (15) days of the close of each
       calendar month and shall reflect all credit allowances accumulated by
       Customer during such month.  Customer may deduct from its next monthly
       payment the amount specified in the credit memorandum received in the
       preceding month.

  7.5  Time Limitation.  In no event shall Williams be liable for allowances for
       interruption unless the claim for such allowance is made within fifteen
       (15) days after the date of the interruption.

8.    WILLIAMS' RIGHT TO RE-CONFIGURE TELEPORT. Williams shall have the right to
      re-configure or relocate the Teleport. Notwithstanding the above, any re-
      configuration must have minimal impact on any Customer performance
      requirement, and any relocation will be within the continental United
      States and will require that the two Teleports used by Customer must be at
      a minimum 1000 miles apart and neither shall be located in Florida or
      southern Texas.

9.   RISK OF LOSS; INSURANCE.

9.1  Insurance Coverage. For Customer's Equipment (as defined in Exhibit A-1)
and Customer's employees on the Teleport premises, Customer will carry or cause
to be carried and maintained in force throughout the entire Term of this
Agreement insurance coverages as described in paragraphs (a) through (c) below
with insurance companies

                                                                    Page 3 of 27
<PAGE>

acceptable to Williams. The limits set forth below are minimum limits and will
not be construed to limit Customer's liability. All costs and deductible amounts
will be for the sole account of the Customer.

       (a)  Worker's Compensation insurance complying with the laws of the State
            or States having jurisdiction over each employee, whether or not
            Customer is required by such laws to maintain such insurance, and
            Employer's Liability with limits of $500,000 each accident, $500,000
            disease each employee, and $500,000 disease policy limit. If work is
            to be performed in Nevada, North Dakota, Ohio, Washington, Wyoming
            or West Virginia, Customer will participate in the appropriate state
            fund(s) to cover all eligible employees and provide a stop gap
            endorsement.

       (b)  Commercial or Comprehensive General Liability insurance on an
            occurrence form with a combined single limit of $1,000,000 each
            occurrence, and annual aggregates of $1,000,000, for bodily injury
            and property damage, including coverage for blanket contractual
            liability, broad form property damage, personal injury liability,
            independent contractors, products/completed operations, and when
            applicable the explosion, collapse and underground exclusion will be
            deleted.

       (c)  Automobile Liability insurance with a combined single limit of
            $1,000,000 each occurrence for bodily injury and property damage to
            include coverage for all owned, non-owned, and hired vehicles.

  9.2  Waiver of Subrogation. In each of the above described policies, 9.1(a)
       and 9.1(c), Customer agrees to waive and will require its insurers to
       waive any rights of subrogation or recovery they may have against
       Williams, its parent, subsidiary, or affiliated companies. Customer does
       not waive and its insurers will not waive any rights of subrogation or
       recovery they may have against Williams, its parent, subsidiary, or
       affiliated companies under 9.1(b).

  9.3  Additional Insureds. Under the policies described in Sections 9.1(b) and
       9.1(c) above, Williams, its parent, subsidiary and affiliated companies
       will be named as additional insureds as respects Customer's operations
       and as respects any work performed under this Agreement. Any costs
       associated with naming these additional insureds will be the
       responsibility of Customer. These policies will be primary insurance as
       respects Williams.

  9.4  Certificates of Insurance. Non-renewal or cancellation of policies
       described above will be effective only after written notice is received
       by Williams from the insurance company thirty (30) days in advance of any
       such non-renewal or cancellation. Prior to commencing the Collocation
       Service hereunder, Customer will deliver to Williams certificates of
       insurance on an ACORD 25 or 25S form evidencing the existence of the
       insurance coverages required above. In the event of a loss or claim
       arising out of or in connection with the work performed under this
       contract, Customer agrees, upon request of Williams, to submit the
       original or a certified copy of its insurance policies for inspection by
       Williams.

  9.5  Risk of Loss. Williams will not insure nor be responsible for any loss or
       damage, regardless of cause, to property of any kind, including loss of
       use thereof, owned, leased or borrowed by the Customer, or its employees,
       servants or agents.

  9.6  Insurance Requirement for Contractors. If Customer utilizes contractor(s)
       per this Agreement, then Customer shall require such contractor(s) to
       comply with these insurance requirements and supply certificates of
       insurance before any work commences.

10.  CONTRACT NOTICES. Any required notices pursuant to this Agreement shall be
     sent by facsimile, with confirmation by overnight courier to the parties at
     the following addresses:

     Williams Vyvx Services, a business unit of   iBEAM Broadcasting Corporation
     Williams Communications, Inc.                645 Almanor Ave., Suite 100

                                                                    Page 4 of 27
<PAGE>

     One Williams Center, MD 26-3                 Sunnyvale, CA 94086
     Tulsa, OK 74172                              Tel: (408) 523-1600
     Telephone: (918) 573-5602                    Fax: (408) 730-8937
     Fax: (918) 574-6042                          Attn: CFO
     Attention: Contract Administration

11.  OPERATIONAL NOTICES. If Customer has any technical problems with
     Customer's Equipment, Customer's signal(s) or the Services, Customer may
     call the Primary Teleport at (732)-969-3191 or (732)-969-3610 or the
     Secondary Teleport at (800)-922-4424 or (909)-943-5399 on a 24 x 7 basis.
     Williams will communicate with Customer as promptly as possible regarding
     any technical problems with Customer's Equipment, Customer's signal(s) or
     the Services. For purposes of these communications from Williams, Customer
     agrees that Williams should contact the operational contacts of Customer,
     in the order listed in Exhibit B hereto.

     Customer shall update its list of Operational Contacts with Williams as
     needed. Williams shall not be responsible for any Interruptions or other
     technical problems with Customer's Equipment, Customer's signal(s) or the
     Services in the event that Williams has attempted to communicate with
     Customer's Operational Contacts according to the information provided by
     Customer to Williams and Williams is unable to establish communications
     with them.

12.  LIMITATION OF LIABILITY

       12.1   EXCEPTING ONLY LIABILITY FOR WILLIAMS' RECKLESS OR WILLFUL
              MISCONDUCT, WILLIAMS' LIABILITY ARISING OUT OF ITS PROVISION OF
              SERVICES HEREUNDER, INCLUDING BUT NOT LIMITED TO LIABILITIES
              ARISING OUT OF WILLIAMS' NEGLIGENCE, MISTAKES AND OMISSIONS,
              INTERRUPTIONS, DELAYS, ERRORS, OR OTHER DEFECTS IN THE SERVICES OR
              BREACH OF CONTRACT OR ARISING OUT OF THE FAILURE TO FURNISH
              SERVICES, WHETHER CAUSED BY ACTS OF COMMISSION OR OMISSION, SHALL
              BE LIMITED TO THE EXTENSION OF ALLOWANCES FOR INTERRUPTIONS AS SET
              FORTH IN THIS AGREEMENT. SUCH ALLOWANCES FOR INTERRUPTION SHALL BE
              THE SOLE REMEDY OF CUSTOMER, INCLUDING ANY END USER OF CUSTOMER,
              AND THE SOLE LIABILITY OF WILLIAMS HEREUNDER. WILLIAMS' LIABILITY
              FOR DAMAGES OR LOSSES OF ANY KIND ARISING OUT OF ITS FURNISHING
              SERVICES SHALL IN NO EVENT EXCEED AN AMOUNT EQUAL TO ITS FIXED
              MONTHLY OR OTHER CHARGE ALLOCABLE TO THE FAULTY OR DEFECTIVE
              SERVICE.

       12.2   NOTWITHSTANDING THE PROVISIONS OF THE PRECEDING SUBPARAGRAPH,
              WILLIAMS SHALL NOT BE LIABLE TO CUSTOMER OR ANY END USER FOR ANY
              LOSS OF, DEFECTS IN OR ANY INABILITY TO FURNISH SERVICE DUE TO
              ACTS OF GOD, ACTS OF GOVERNMENT, WARS, RIOTS, STRIKES, FAILURE OF
              A TRANSPONDER, FAILURE OF A SATELLITE, FAILURE OF ANY OTHER
              TRANSMISSION EQUIPMENT OR OTHER CAUSES BEYOND WILLIAMS' CONTROL.

      12.3  ANY AND ALL EXPRESS AND IMPLIED WARRANTIES RELATING TO THE SERVICES
            INCLUDING BUT NOT LIMITED TO, WARRANTIES OF MERCHANTABILITY OR
            FITNESS FOR A SPECIFIC PURPOSE OR USE, ARE EXPRESSLY DISCLAIMED.
            CUSTOMER SHALL DEFEND, INDEMNIFY AND HOLD HARMLESS WILLIAMS FROM ANY
            CLAIMS MADE UNDER A WARRANTY OR REPRESENTATION MADE BY CUSTOMER TO
            ANY THIRD PARTY WITH RESPECT TO THE SERVICES.

       12.4  EXCEPT FOR CUSTOMER'S PAYMENT OBLIGATIONS HEREUNDER, IN NO EVENT
             SHALL EITHER PARTY BE LIABLE TO THE OTHER FOR ANY INCIDENTAL OR
             CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, LOST
             PROFITS),

                                                                    Page 5 of 27
<PAGE>

             REGARDLESS OF THE FORESEEABILITY THEREOF, OCCASIONED BY THE
             TERMINATION OF CUSTOMER'S RIGHTS TO USE, OR THE PREEMPTION OF OR
             THE FAILURE OF, OR LOSS OF TECHNICAL QUALITY OF, THE SERVICES OR BY
             ANY DELAY IN COMMENCEMENT OF THIS AGREEMENT OR BY ANY OTHER CAUSE
             OR MATTER WHATSOEVER.

       12.5  EXCEPT FOR CUSTOMER'S PAYMENT OBLIGATIONS HEREUNDER, IN NO EVENT
             SHALL CUSTOMER BE LIABLE TO WILLIAMS FOR DIRECT DAMAGES IN EXCESS
             OF ONE MILLION DOLLARS.

13.  CUSTOMER'S CONTENT

     13.1   Responsibility for Content.  Customer shall be solely responsible
            for all content transmitted by Williams as part of the Services.
            Further, Customer shall make all arrangements with other common
            carriers, stations, networks, sponsors, music licensing
            organizations, performers, representatives or other parties for the
            authorizations necessary to avail itself of the Services. Customer
            shall indemnify, defend, and save harmless Williams from any
            liability arising out of failure to make such arrangements.

     13.2   Content Indemnity. Customer shall indemnify, defend, and save
            harmless Williams from and against all loss, liability, damage and
            expense, including reasonable attorneys' fees, due to claims arising
            out of the content of any programming transmitted over Williams'
            facilities pursuant to this Agreement including without limitation,
            any claim for libel, slander, or infringement of copyright and any
            other claim resulting from any act or omission of Customer arising
            from the use of Williams' facilities or the Services provided that
            Customer be given immediate written notice of any such claims and of
            any suits brought or threatened against Williams and authority to
            assume the sole defense thereof through its own counsel and to
            compromise or settle any suits so far as this may be without
            prejudice to Williams' rights.

     13.3   No Violation of Law. Customer shall not use the Services for an
            unlawful purpose, including (without limitation) any use which
            constitutes a violation of any local, state, federal, national or
            international laws. Williams shall have the right to terminate this
            Agreement and the Services provided hereunder without liability to
            Customer in the event that Williams, its officers, employees or
            agents, becomes the subject of any investigation, or is threatened
            with or made a party to any administrative proceeding or litigation,
            related to the alleged illegal use of the Services by Customer.
            Notwithstanding the foregoing, Williams will not terminate this
            Agreement pursuant to this Section 13.3 if, immediately upon
            notification by Williams of such alleged illegal use, Customer is
            able to satisfy Williams subject to Williams' sole and reasonable
            discretion within forty-eight (48) hours that Customer has ceased
            the aforementioned alleged illegal use.

14.  NO THIRD-PARTY BENEFICIARY. The provisions of this Agreement are for the
benefit only of the parties hereto, and no third party may seek to enforce, or
benefit from these provisions.

15.  LEGAL EXPENSES. If any proceeding is brought for the enforcement of this
Agreement, or because of an alleged or actual dispute, breach, default or
misrepresentation in connection with any of the provisions of this
Agreement, the prevailing party shall be entitled to recover reasonable
attorneys' fees and other costs and expenses incurred in such action or
proceeding in addition to any other relief to which such party may be entitled.

16.  FORCE MAJEURE. Notwithstanding any other provision of this Agreement,
neither Williams nor Customer shall be held liable for any delay or failure to
perform any part of this Agreement (other than non-payment of amounts due
hereunder) for any cause beyond its control and without its fault or negligence,
including but not limited to acts or omissions of civil or military authorities,
national or local emergencies, government regulations, embargoes, epidemics,
wars, terrorist acts, sabotage, riots, insurrections, fires, lightning, sun,
hail, high winds or

                                                                    Page 6 of 27
<PAGE>

other adverse weather conditions , explosions, nuclear accidents, strikes,
extended power blackouts, natural disasters including but not limited to
earthquakes, floods or volcanic action, failure of satellite transponder or
failure of any third party facilities, equipment or services (outside of the
control of Williams and its subcontractors) or any law, regulation or order of
any government agency or court of competent jurisdiction affecting either of the
parties hereto in the performance of their obligations hereunder.

17.  INDEPENDENT CONTRACTORS. The parties to this Agreement are independent
contractors, and none of the provisions of this Agreement shall be interpreted
or deemed to create any relationship between Williams and Customer other than
that of independent contractors. Without limiting the generality of the
foregoing, Williams and Customer shall have sole responsibilities for the
withholding of all federal and state income taxes, unemployment insurance tax,
social security tax and other withholding with respect to payments made by it to
its employees performing services for it under this Agreement. Neither party's
directors, officers, employees, contractors or agents shall be deemed employees
of the other party or shall be entitled to compensation or any employment
benefits of any kind provided by the other party to its employees.

18.  WAIVER. No delay or failure of Williams or Customer to insist on
performance of any of the terms or conditions herein or to exercise any right or
privilege, or either party's waiver of any breach hereunder, shall be construed
to be a waiver thereof or a waiver of any other terms, conditions or privileges,
whether of the same or similar type.

19.  GOVERNING LAW. This Agreement shall be governed by and construed in
accordance with the laws of the State of New York without regard to its choice
of law provisions.

20.  SEVERABILITY. If any term or provision of this Agreement shall, to any
extent, be determined to be invalid or unenforceable by a court or body of
competent jurisdiction, then (a) both parties shall be relieved of all
obligations arising under such provision and this Agreement shall be deemed
amended by modifying such provision to the extent necessary to make it valid and
enforceable while preserving its intent, and (b) the remainder of this Agreement
shall be valid and enforceable.

21.  SURVIVAL OF TERMS AND CONDITIONS. The terms and conditions of this
Agreement which by their nature extend beyond termination of this Agreement
shall survive the expiration or termination of this Agreement to the full extent
necessary for their enforcement and for the protection of the party in whose
favor they operate.

22.  COUNTERPARTS. This Agreement may be executed in counterparts, each of which
shall constitute an original and all of which, when taken together, shall
constitute one agreement.

23.  PARTIES BOUND BY AGREEMENT; ASSIGNMENT. This Agreement is binding upon and
shall inure to the benefit of the parties hereto and upon their respective
successors and permitted assigns. Customer may not assign this Agreement without
the prior written consent of Williams, which consent shall not be unreasonably
withheld. Notwithstanding the foregoing, upon written notice, either party may
assign to a parent, affiliate, subsidiary company and/or any entity that
acquires, substantially all the shares or assets of a Party, without the consent
of the other.

24.  OUTSOURCING OF NETWORK MANAGEMENT. Should Customer establish an outsourcing
relationship with a third party to manage its network, Williams agrees to work
with such third party as designated by Customer in order to facilitate optimum
performance of Customer's network.

25.  ENTIRE AGREEMENT; AMENDMENTS. This Agreement contains the entire agreement
of the parties with respect to the subject matter hereof and supersedes any
prior understandings, oral agreements and/or writings between the parties
regarding the subjects within this Agreement. This Agreement may only be amended
or modified in writing signed by Customer and Williams.

                                                                    Page 7 of 27
<PAGE>

IN WITNESS WHEREOF the parties have executed this Agreement by the hand of their
respective duly authorised officers.

WILLIAMS VYVX SERVICES, A BUSINESS UNIT       iBEAM BROADCASTING CORPORATION
OF WILLIAMS COMMUNICATIONS, INC.

/s/ Laura Kenny                               /s/ Chris L. Dier
------------------------------------------    ----------------------------------
SIGNATURE                                     SIGNATURE

Laura Kenny                                   Chris L. Dier
------------------------------------------    ----------------------------------
PRINT NAME                                    PRINT NAME

Sr. VP & General Manager                      CFO
------------------------------------------    ----------------------------------
TITLE                                         TITLE

12-14-99                                      12/18/99
------------------------------------------    ----------------------------------
DATE                                          DATE

                                                                    Page 8 of 27
<PAGE>

                                                     Agreement No.______________

[LOGO OF WILLIAMS]

VYVX SERVICES

                   Teleport Services Agreement - Exhibit A-1

1.   SERVICE DESCRIPTION. Williams shall provide to Customer the use of the
Teleport for a dedicated use transmission, based on the terms contained herein,
to uplink Customer's signal(s) from the Teleport to Williams-provided space
segment on TelStar 7, transponder 15.

2.   SERVICE INITIATION. Williams shall initiate the Services described herein
on January 4, 2000 (the "Service Initiation Date"), provided, however that
Customer has signed this Agreement no later than December 14, 1999. Customer's
obligation to pay for the Services shall begin on the Service Initiation Date.
Loral has agreed to provide a transponder for testing purposes up to a maximum
of 15 MHz, and Williams will provide the Services during a Testing Period, which
shall begin as early as possible during the week of December 13, 1999 and
continue until January 2, 2000. Loral has informed Williams that Telstar 7,
Transponder 3 has been designated for such Testing Period and service will
switch to Telstar 7, Transponder 15 on January 4, 2000.

3.   TERM.  The term of this Exhibit A-1 shall begin on the Service Initiation
Date and shall continue for a period of thirty-six (36)  months, or until
December 31, 2002  (the "Original Term").

4.   DEMARCATION POINT FOR SERVICES. The Demarcation Point for Services
described herein shall be defined as either

          4.1  RF Chain Demarcation

               a)  X   Customer provided equipment ("CPE") demarcation - the
                  ----
                  DVB/ASI data stream from Customer Provided encapsulator to the
                  input of Williams provided modulator for all uplink services
                  from the Teleport;

               b)      Williams provided equipment demarcation - the Telco
                  ----
                  demarcation point as defined by the local loop provider (RBOC,
                  CAP, etc.), with Williams responsible for connectivity between
                  RF Chain and local loop demarcation;

          4.2  Local Loop Demarcation

               a)      Williams provided local loop demarcation - Customer
                  ----
                  premise - Williams provisions the local loop between the
                  Customer premise and the respective local facility, whether
                  that facility is a Williams POP or 3rd party POP, with the
                  demarcation point being the Customer end of the local loop;

               b)      Williams provided local loop demarcation - Teleport
                  ----
                  premise - For the Primary uplink out of New York, Williams
                  provisions the local loop between the Teleport and the
                  respective local facility, whether that facility is a Williams
                  POP or 3rd party POP, with the demarcation point being the
                  local facility end of the local loop. Williams is responsible
                  for provisioning and continued operation of the local loop for
                  the Primary signal path as defined herein;

               c)      Customer provided local loop demarcation - Customer
                  ----
                  premise - Customer provisions the local loop between the
                  Customer Premise and respective local facility, whether that
                  facility is a Williams POP or 3rd party POP with the
                  demarcation point being the local facility end of the local
                  loop;

               d)  X   Customer provided local loop demarcation - Teleport
                  ----
                  premise - For the Redundant uplink out of Los Angeles,
                  Customer provisions the local loop between the Teleport and
                  the respective local facility, whether that facility is a
                  Williams POP or 3rd party POP, with the demarcation point
                  being the Teleport end of the local loop. Customer is
                  responsible for provisioning, payment and continued operation
                  of the local loop for the Redundant signal path as defined
                  herein.

          4.3     IXC Demarcation. Intentionally Left Blank.

          4.4     "Other." Intentionally Left Blank.

                                                                    Page 9 of 27
<PAGE>

5.  WILLIAMS RESPONSIBILITIES. (collectively, the Service[s])

                             [GRAPHIC OMITTED]

Generic Signal Path diagram

5.1  Terrestrial Fiber Connectivity:

     a) Local Access. Customer Premise (City A) Intentionally Left Blank.

     b) Interexchange Fiber. Intentionally Left Blank.

     c) Local Access - Teleport (City Z)

        City Z Customer Premise:          IXC POP, 12th Flr, 60 Hudson St
        City Z NPA / NXX:                 T.B.D.
        Williams Teleport:                Primary - Williams Vyvx Teleport New
                                          York, 27 Randolph Street, Carteret, NJ
                                          07008

        Circuit Type:        _________ Analog              X        Digital
                                                           --------
        Circuit Capacity:    DS-3(45 Mbps)

        Transmission Type:   _________ Simplex             X        Duplex
                                                           --------

5.2  Space Segment  (the "Transponders")

a)  Williams shall provide two Ku-band transponders (the "Transponders") on
    Telstar 7 at the 129 West orbital slot. The Transponders shall be provided
    on a "ramp-up" schedule by which Customer commits to pay for increasing
    amounts of the space segment on the Transponders. The ramp-up schedule is
    depicted on the Ramp-Up and Pricing Schedule attached hereto as Exhibit D.
    Customer's commitment for the space segment depicted on Exhibit D begins on
    the first day of the first month of the respective quarter identified. With
    appropriate notice, Customer may accelerate the ramp-up of space segment,
    together with the corresponding charges. Once an increased level of space
    segment has been activated, however, the level may not be decreased. The
    full use of both Transponders as depicted on Exhibit D beginning no later
    than [*] shall continue through the end of the Term of the Agreement. The
    second transponder is subject to the Right of First Refusal described below
    in subparagraph (c).

b)  Additional bandwidth is available under the Bursting provision in Section
    6.6 (b) herein.

c)  Williams shall provide Customer with a Right of First Refusal on a Fully-
    Protected Ku-band transponder on Telstar 7. The Right of First Refusal shall
    be activated at the time Loral Skynet receives a bona fide offer for Loral's
    last Fully Protected Ku-band transponder on Telstar 7. In order to implement
    such Right-of-First Refusal, Williams shall provide Customer with written
    notice that Loral has received such bona fide offer. If Customer chooses to
    lease the transponder in question, Customer must respond, in writing, to
    Williams within twenty (20) calendar days of Customer's receipt of Williams'
    written notice and must begin full service on the second transponder no
    later than forty-five (45) days following receipt of Williams' written
    notice. The monthly rate for the second transponder shall

    [*]   Certain information on this page has been omitted and filed separately
    with the Commission. Confidential treatment has been requested with respect
    to the omitted portions.

                                                                   Page 10 of 27

<PAGE>

     immediately be [*] without any ramp-up schedule as depicted on Exhibit D
     hereto. Customer's failure to respond to Williams' notification shall be
     deemed a refusal of the second transponder. This Right of First Refusal
     terminates when service on the second transponder begins on [*] or when
     Customer declines service under the Right of First Refusal.

(d)  Williams' Standard Satellite Terms and Conditions are attached as Exhibit C
     and are considered an integral part of the Agreement. In the event of
     conflict, the terms of this Agreement shall supersede the terms and
     conditions in Exhibit C.

5.3  Uplinking/Downlinking. Williams shall modulate Customer's DVB/ASI data
     stream to 70 MHz, upconvert the signal to 14 GHz and then transmit the
     signal from the Teleport to the Transponder in accordance with the
     predicted performance parameters which have been established based on the
     technical specifications calculated in the New York link budget attached as
     Exhibit A-1(a). Customer acknowledges and agrees that any equipment
     substitutions or technical changes made by Customer or Williams may affect
     the attached link budget calculations and could result in corresponding
     changes to the following predicted performance specifications:

     Williams will provide a Primary signal path via its New York Teleport. The
     Customer's signal will be transmitted from New York at a calculated power
     level of 73.11 dBW to TelStar 7's Ku-band transponder 15, resulting in a
     predicted downlink EIRP of 47 dBW per carrier to CONUS. Williams
     understands that this signal will be received by Customer's downlink
     equipment utilizing a minimum 1.0 meter antenna in CONUS providing
     approximately 40 dBi gain at 12 GHz. Calculations are based on Loral Skynet
     provided specifications for TelStar 7. These values assume 6 dB of rain
     fade margin and 99.7% equipment availability. Additionally, these values
     predict an approximate data rate capacity of 39 MBps.

     Williams will provide a Redundant signal path via its Los Angeles Teleport.
     The Customer's signal will be transmitted from Los Angeles at a calculated
     power level of 70.34 dBW to TelStar 7's Ku-band transponder 15, resulting
     in a predicted downlink EIRP of 47 dBW per carrier to CONUS. Williams
     understands that this signal will be received by Customer's downlink
     equipment utilizing a minimum 1.0 meter antenna in CONUS providing
     approximately 40 dBi gain at 12 GHz. Calculations are based on Loral Skynet
     provided specifications for TelStar 7. These values assume 6 dB of rain
     fade margin and 99.7% equipment availability. Additionally, these values
     predict an approximate data rate capacity of 39 MBps.

     When Williams has actual knowledge that there is an outage to Customer's
     Service, Williams must switch signal delivery from the Primary uplink to
     the Redundant uplink as described herein. Williams will switch the signal
     within five (5) minutes upon Williams' actual knowledge of the outage. To
     accommodate Williams' switch of signal delivery, Customer shall maintain
     the delivery of the data signal to the Redundant uplink on a continuous
     basis.

     It is understood and agreed to by both parties that while these initial
     uplink systems do not support iBEAM's long term growth requirements,
     approximately [*] MBps for a CONUS service, but they do provide sufficient
     capacity for iBEAM to develop their service offering. At such time that
     both parties deem this current capacity to be insufficient to meet iBEAM's
     market requirements, both parties will work together to expand these
     systems to support iBEAM's long term growth requirements of [*] MBps. Such
     expansion of Services shall be reflected in an amendment to this Agreement.

<TABLE>
<CAPTION>
-----------------------------------------------------------------------------------------------------------
                                  Uplink       Uplink      Downlink     Downlink
   Direction         Data Rate    Freq.       Polarity       Freq.      Polarity       Modulation    FEC
-----------------------------------------------------------------------------------------------------------
<S>                  <C>          <C>         <C>           <C>        <C>             <C>           <C>
Simplex Uplink-NY     39 MBps     14300     Horizontal     12000       Vertical       QPSK          3/4
                                   MHz                      MHz
-----------------------------------------------------------------------------------------------------------
Simplex Uplink-LA     39 MBps     14300     Horizontal     12000       Vertical       QPSK          3/4
                                   MHz                      MHz
-----------------------------------------------------------------------------------------------------------
</TABLE>

[*] Certain information on this page has been omitted and filed separately with
the Commission. Confidential treatment has been requested with respect to the
omitted portions.

5.4  Equipment. Williams shall provide the necessary equipment to uplink
     Customer's signal(s) to/from the customer provided modem in accordance with
     this Agreement. Uplink system will operate with data modulators, frequency
     upconverters and High Power Amplifiers in a 1:N automatic redundancy mode
     where N<4. Williams will supply an environmentally controlled facility,
     including 2 19" racks for Customer's equipment and 2 POTS lines for remote

                                                                   Page 11 of 27

<PAGE>

     monitoring of the Customer Provided equipment at each teleport facility.
     Facility power will be supplied at 120vac or 208vac. In the event of
     facility power failure, all critical equipment will have power supplied by
     an uninterruptable power supply with sufficient battery capacity to allow
     time for William's supplied diesel generator to be automatically switched
     on-line. All equipment provided by Williams shall remain the property of
     Williams.

5.5  Monitor. Williams will monitor the Service, and Williams will communicate
     with Customer as promptly as possible regarding any technical problems with
     Customer's Equipment, Customer's signal(s) or the Services. Williams will
     provide Customer with a monthly monitoring report in a form or format which
     is mutually agreed to by the parties.

5.6  Basic Maintenance. Williams may provide basic maintenance to Customer based
     on procedures mutually agreed upon by the parties.

6. CUSTOMER RESPONSIBILITIES.

6.1  Space Segment. Intentionally Left Blank.

6.2  Signal Delivery. Customer shall be solely responsible for delivery of its
signal(s) to/from the Demarcation Point, as defined in Section 4 above.

6.3  Uplinking/Downlinking. Intentionally Left Blank.

6.4  Customer's Equipment.

     (a) For the Services described above, Customer shall provide equipment
         ("Customer's Equipment") to both the New York and Los Angeles Teleports
         to be used in connection with Williams' provision of the Services to
         Customer which will perform the following functions:

         2 Cisco 7206VXR Routers - The first router is for terminating ATM DS3
         local loop for the purpose of passing multicast and unicast data from
         Customer's broadcasting head ends into Customer's DVB encapsulators.
         The second router is for redundancy.

         2 Cisco 2924 Switches - The first switch is to terminate Customer's
         server, router, encapsulator and terminal server equipment LAN ports,
         and allows for layer 2 communication between Customer's equipment. The
         second switch is for redundancy.

         2 Skystream Encapsulators - The first encapsulator encapsulates
         Customer's data into a DVB compliant format for delivery to Williams'
         multiplexing equipment. The second encapsulator is for redundancy.

         Cisco 2511 Terminal Server - Provides out of band management and remote
         capability for controlling and configuring Customer owned equipment.

         Customer shall provide Williams with a list of equipment as well as a
         corresponding diagram(s) to be updated as required.

     (b) Customer's Equipment shall remain the property of Customer, and
         maintenance, repair, or replacement of Customer's Equipment shall be
         the sole responsibility of Customer. In the event that Customer's needs
         change with regard to rack space, the parties shall re-evaluate charges
         associated with such additional rack space. Upon expiration or
         termination of this Agreement, Customer agrees to promptly remove
         Customer's Equipment. Customer's failure to do so, or failure to
         provide Williams with instructions regarding the disposition of
         Customer's Equipment within thirty (30) days of the expiration or
         termination of the Agreement shall be deemed to be an abandonment of
         Customer's Equipment, and Williams may remove Customer's Equipment and
         place it in storage for

                                                                   Page 12 of 27
<PAGE>

         Customer. Upon payment to Williams of the total cost of removal,
         storage and shipping, Williams will ship Customer's Equipment to
         Customer.

     (c) The Teleport is staffed on a 24 x 7 basis. For security of the Teleport
         and in the best interests of Williams and its customers, access to the
         Teleport is restricted. Customer shall have access to Customer's
         Equipment for normal maintenance purposes from 08:00 to 17:00 local
         time, weekends and holidays excluded, and Customer shall give the
         Teleport a minimum of 24 hours advance notice. Customer shall have
         access to Customer's Equipment for emergency servicing purposes at any
         time, and Customer shall give a minimum of one hour advance notice.
         Customer shall provide the Teleport with a written list of all of
         Customer's employees (or contractors) who are authorized to have access
         to Customer's Equipment, and Customer shall update this list as needed.
         The Teleport may deny access to any person whose name is not on
         Customer's list of authorized persons.

     (d) The Teleport will supply adequate rack space for Customer's Equipment
         as listed above at no charge in addition to the Service Charge. Any
         additional rack space required or requested by Customer shall be
         subject to availability and to additional charge.

6.5  Uplinking/Downlinking Equipment. Customer shall be solely responsible for
     transmitting/receiving satellite signals, including all uplink/downlink
     equipment necessary for transmission/reception of satellite signals at
     locations other than the Teleport.

6.6  Data Rates and Service Charges.

     (a) Monthly Recurring Charges. The Monthly Recurring Charge ("MRC") for the
         Service shall be as described in the Ramp-Up and Pricing Schedule
         attached hereto as Exhibit D. Customer is committing to the following
         data rate ramp-up schedule for Services:

         Data Rate            Timeframe
         -------------------------------
         [*]                  Qtr 1, '00
         [*]                  Qtr 2, '00
         [*]                  Qtr 3, '00
         [*]                  Qtr 4, '00
         [*]                  Qtr 1, '01
         [*]                  Qtr 2, '01
         [*]                  Qtr 3, '01
         [*]                  Qtr 4, '01
         [*]                  Qtr 1, '02
         [*]                  Qtr 2, '02
         [*]                  Qtr 3, '02
         [*]                  Qtr 4, '02

     (b) Non-Recurring Expense. The Non-Recurring Expense ("NRE") for the
         Services shall be as described in the Ramp-Up and Pricing Schedule
         attached hereto as Exhibit D. Customer shall be charged the NRE, or
         one-time fee of $7,000, which sum represents $3,000 installation fee
         for the two teleports ($1,500 x 2 teleports) plus $4,000 rack fees for
         two racks per each teleport ($1,000 x 2 racks x 2 teleports).

     (c) Rack Space Charges. The Rack Space Charges for the Service shall be as
         described in the Ramp-Up and Pricing Schedule attached hereto as
         Exhibit D. Customer will not be charged any MRC for the initial two
         racks deployed at each teleport, or 4 total racks. However, as Customer
         adds racks, Customer will not incur any NRE, but Customer will incur
         MRC charges for every additional rack beyond the first four. The rates
         for these racks will vary with the number of transponders required to
         provide the service, or as the number of transponders required
         increases, the per rack rate will decrease. The Rack rates will be $900
         per rack, above the initial four, while the Customer requires one
         transponder. Once the Customer adds a second transponder, the per rack
         rate will drop to $800 per rack. If Customer adds a third transponder,
         the rate would drop to $700 per rack.

     (d) Bursting. The Bursting Charge for the Service shall be as described in
         the Ramp-Up and Pricing Schedule attached hereto as Exhibit D. Each
         single Bursting event is limited to a duration of seven (7) days, with
         a limitation of nine (9)

                                                                   Page 13 of 27
<PAGE>

         days for multiple bursting events during any thirty-one (31) calendar
         day rolling period. If the bursting event exceeds either the seven (7)
         day limitation for a single event or any period of time during the nine
         (9) days for any thirty-one (31) calendar day period, Customer will be
         required to ramp-up its Service to the data rate level for the highest
         bandwidth actually used during the bursting event. For example, if
         Customer is at 10 MBps, and wants to burst to 15 MBps for nine (9)
         days, then Customer is required to ramp-up its fixed data rate to 15
         MBps from 10 MBps and begin paying the 15 MBps rate with no One-Time
         bursting fee associated with this ramp-up. Additionally, any Bursting
         is limited to 10 MBps above the current fixed data rate. If the
         Bursting requires bandwidth greater than 10 MBps higher than the
         current data rate, Customer will be required to raise its current data
         rate to a level supporting the desired bursted bandwidth. All Bursting
         is limited to the bandwidth available within a single transponder. No
         bursting capability is available if bandwidth requires an additional
         transponder.

        (e)   The Service Charge shall be invoiced thirty (30) days in arrears
              and shall be paid by Customer in U.S. Dollars within thirty (30)
              days of the date of invoice. Additionally, at the time of signing
              this Agreement, Customer shall remit to Williams the sum of
              $175,000 which sum represents advance payment of one month's
              Service Charge for Transponder 1, to be held by Williams as a
              deposit (the "Deposit") throughout the Term of this Agreement.
              Further, prior to initiation of Service on Transponder 2, Customer
              shall remit to Williams the additional sum of $175,000 which sum
              represents advance payment of one month's Service Charge for
              Transponder 2, to be held by Williams as a deposit throughout the
              Term of this Agreement. Such deposits, as are set forth above,
              shall be returned to Customer thirty (30) days from termination of
              this Agreement, provided however that Customer has made payment
              for all services rendered hereunder.

        (f)   Customer agrees that this is a take-or-pay commitment and that
              failure to use the Services throughout the Term does not affect
              Customer's obligation to pay the Service Charge throughout the
              Term. The parties agree that Customer's total commitment pursuant
              to this Agreement through the Term is approximately $8,850,840.
              The parties agree that this take-or-pay commitment is a portion of
              the consideration for this Agreement, and that it is not a
              penalty.

   6.7  Labor. If Williams performs labor for Customer beyond Basic Maintenance
        as described in Section 5.6 herein, at Customer's request, other than in
        connection with the Services, then Customer agrees to pay Williams for
        that labor at the rate of $100 per hour. An example of when a labor
        charge would be charged is if Williams agreed to switch out an item of
        Customer's Equipment with a replacement part provided by Customer.

   6.8  Compliance with Teleport Policies. Customer agrees that it shall comply
        with all policies and procedures of the Teleport.

7. AUTOMATIC RENEWAL. After the expiration of the Original Term, this Exhibit
A-1 shall automatically renew for one-year renewal terms (a "Renewal Term").
Either party may elect not to renew the Agreement by providing the other party
with written notice a minimum of one hundred twenty (120) days prior to the end
of the Original Term or any Renewal Term.

8. ANNUAL SERVICE CHARGE ADJUSTMENT. Upon expiration of the Original Term, and
   continuing thereafter annually on each anniversary of the Renewal Term of
   this Agreement, unless otherwise agreed to by the parties, the Service Charge
   shall be increased by an amount equal to the Consumer Price Index for All
   Urban Consumers (CPI-U), as originally published by the Bureau of Labor
   Statistics, for all items less food and energy, unadjusted for the twelve
   month period ending the previous December 31.

                                                                   Page 14 of 27

<PAGE>

Exhibit A-1(a) Primary Service - New York Link Budget

<TABLE>
<CAPTION>
     ---------------------------------------------------------------------------------------------------------------------
     Service Name                                   iBEAM

     Coverage                                       CONUS

     Uplink earth station                           Newark

     Downlink earth station                         CONUS EIRP

     Satellite name                                 Telstar 7
     <S>                                                 <C>             <C>                                 <C>
     ---------------------------------------------------------------------------------------------------------------------
     Link Input Parameters                                 Uplink          Downlink                             Units
     ---------------------------------------------------------------------------------------------------------------------
     Site latitude                                       40.73N            48.93N                             degrees
     Site longitude                                      74.17W           119.43W                             degrees
     Magnetic variation                                   13.3W             19.0E                             degrees
     Site altitude                                         0.1               0.2                                 km
     Frequency                                              14                12                                 GHz
     Polarization                                        Vertical        Horizontal
     Rain-climatic zone (* prefix Crane)                    K                 D
     Availability (average year)                          99.7              99.7                                 %
     Water vapour density                                   15                10                                 gm/m3
     Surface temperature                                    20                15                             (degrees)C
     Antenna aperture                                        7                 1                                 metres
     Antenna efficiency / gain                              65                65                         % (* prefix dBi)
     Coupling loss                                           4               0.1                                dB
     Antenna tracking / mispoint error                     0.1               0.1                                dB
     LNB noise figure / temp                                                 0.8                         dB (* prefix K)
     Antenna noise                                                            50                                 K
     Adjacent carrier interference                          28                28                                dB
     Adjacent satellite interference                        28                28                                dB
     Cross polarization interference                        28                28                                dB
     Uplink station HPA output back-off                      1                                                  dB
     Number of carriers / HPA                                1
     HPA C/IM (up)                                          30                                                  dB
     Uplink power control                                    6                                                  dB
     Uplink filter truncation loss                           0                                                  dB

     ---------------------------------------------------------------------------------------------------------------------
     Satellite Input Parameters                           Value                                                Units
     ---------------------------------------------------------------------------------------------------------------------
     Satellite longitude                                  129W                                               degrees
     Transponder type                                     TWTA
     Receive G/T                                           1.4                                                 dB/K
     Saturation flux density                               -96                                                 dBW/m2
     Satellite attenuator pad                                6                                                  dB
     Transmit EIRP at saturation                            47                                                 dBW
     Transponder bandwidth                                  36                                                 MHz
     Input back off total                                    1                                                  dB
     Output back off total                                2.49                                                  dB
     Intermodulation interference                         12.5                                                  dB

     ---------------------------------------------------------------------------------------------------------------------
     Carrier/Link Input Parameters                        Value                                                Units
     ---------------------------------------------------------------------------------------------------------------------
     Modulation                                           4-PSK
     Required bit error rate performance                   10^7
     Required Eb/No without FEC coding                    11.31                                                 dB
     Required Eb/No with FEC coding                         5.5                                                 dB
</TABLE>

                                                                   Page 15 of 27
<PAGE>

<TABLE>
     <S>                                                        <C>           <C>                            <C>
     Information rate                                              39                                           Mbps
     Overhead                                                       5                                            %
     FEC code rate                                               0.75
     Spread factor                                                1.2
     Carrier spacing factor                                       1.3
     Bandwidth allocation step size                               0.1                                           MHz
     System margin                                                  1                                           dB
     ---------------------------------------------------------------------------------------------------------------------
     Calculations at Saturation                                 Value                                          Units
     ---------------------------------------------------------------------------------------------------------------------
     Gain 1m^2                                                  44.38                                          dB/m2
     Uplink C/No                                                95.52                                          dB.Hz
     Downlink C/No                                              88.78                                          dB.Hz
     Total C/No                                                 87.94                                          dB.Hz
     Uplink EIRP for saturation                                 74.11                                           dBW
     ---------------------------------------------------------------------------------------------------------------------
     General Calculations                                      Uplink          Downlink                         Units
     ---------------------------------------------------------------------------------------------------------------------
     Elevation                                                  17.59             33.1                        degrees
     True azimuth                                              245.31           192.61                        degrees
     Compass bearing                                           258.61           173.61                        degrees
     Path distance to satellite                              39794.08         38339.27                          km
     Propagation time delay                                      0.13             0.13                        seconds
     Antenna efficiency                                            65               65                           %
     Antenna gain                                               58.36            40.12                          dBi
     Availability (average year)                                 99.7             99.7                           %
     Link downtime (average year)                              26.298           26.298                         hours
     Availability (worst month)                                    99               99                           %
     Link downtime (worst month)                                7.305            7.305                         hours
     Spectral power density                                    -24.38             5.38                       dBW/4kHz
     ---------------------------------------------------------------------------------------------------------------------
     Uplink Calculation                                         Clear           Rain Up          Rain Dn       Units
     ---------------------------------------------------------------------------------------------------------------------
     Uplink transmit EIRP                                       73.11            73.11            73.11         dBW
     Transponder input back-off (total)                             1                1                1         dB
     Input back-off per carrier                                    -1               -1               -1         dB
     Mispoint loss                                                0.1              0.1              0.1         dB
     Free space loss                                           207.37           207.37           207.37         dB
     Atmospheric absorption                                      0.43             0.43             0.43         dB
     Tropospheric scintillation fading                           0.69             0.69             0.69         dB
     Atmospheric losses total                                    1.13             1.13             1.13         dB
     Total path loss (excluding rain)                          208.59           208.59           208.59         dB
     Rain attenuation                                               0              3.6                0         dB
     Uplink Power Control                                           0                6                0         dB
     Uncompensated Rain Fade                                        0                0                0         dB
     C/No (thermal)                                             94.52            94.52            94.52        dB.Hz
     C/N (thermal)                                              19.37            19.37            19.37         dB
     C/ACI                                                         28               28               28         dB
     C/ASI                                                         28               28               28         dB
     C/XPI                                                         28               28               28         dB
     C/IM                                                          30               30               30         dB
     Eb/(No*Io)                                                 16.64            16.64            16.64         dB
</TABLE>

                                                                   Page 16 of 27
<PAGE>

<TABLE>
<CAPTION>
   ------------------------------------------------------------------------------------------------------------------
   Downlink Calculation                                 Clear            Rain Up          Rain Dn            Units
   ------------------------------------------------------------------------------------------------------------------
   <S>                                                <C>               <C>               <C>                <C>
   Satellite EIRP total                                   47                 47               47              dBW
   Transponder output back-off (total)                  2.49               2.49             2.49              dB
   Output back-off per carrier                         -2.49              -2.49            -2.49              dB
   Satellite EIRP per carrier                          44.51              44.51            44.51              dBW
   Mispoint loss                                         0.1                0.1              0.1              dB
   Free space loss                                     205.7              205.7            205.7              dB
   Atmospheric absorption                               0.14               0.14             0.14              dB
   Tropospheric scintillation fading                    0.32               0.32             0.32              dB
   Atmospheric losses total                             0.46               0.46             0.46              dB
   Total path loss (excluding rain)                   206.27             206.27           206.27              dB
   Rain attenuation                                        0                  0             0.64              dB
   Noise increase due to precipitation                     0                  0             1.15              dB
   Downlink degradation (DND)                              0                  0             1.79              dB
   Total system noise                                 114.12             114.12            148.8               K
   Figure of merit (G/T)                               19.45              19.45            18.29             dB/K
   C/No (thermal)                                      86.29              86.29             84.5             dB.Hz
   C/N (thermal)                                       11.13              11.13             9.35              dB
   C/ACI                                                  28                 28               28              dB
   C/ASI                                                  28                 28               28              dB
   C/XPI                                                  28                 28               28              dB
   C/IM                                                 12.5               12.5             12.5              dB
   Eb/(No*Io)                                           7.63               7.63             6.54              dB
   ------------------------------------------------------------------------------------------------------------------
   Totals per Carrier (End-to-End)                     Clear            Rain Up          Rain Dn            Units
   ------------------------------------------------------------------------------------------------------------------
   C/No (thermal)                                      85.68              85.68            84.09             dB.Hz
   C/N (thermal)                                       10.53              10.53             8.93              dB
   C/ACI                                               24.99              24.99            24.99              dB
   C/ASI                                               24.99              24.99            24.99              dB
   C/XPI                                               24.99              24.99            24.99              dB
   C/IM                                                12.42              12.42            12.42              dB
   C/(No*Io)                                           83.24              83.24            82.26             dB.Hz
   C/(N*I)                                              8.09               8.09             7.11              dB
   Eb/(No*Io)                                           7.12               7.12             6.14              dB
   System margin                                           1                  1                1              dB
   Net Eb/(No*Io)                                       6.12               6.12             5.14              dB
   Required Eb/(No*Io)                                   5.5                5.5              5.5              dB
   Excess margin                                        0.62               0.62            -0.36              dB
   ------------------------------------------------------------------------------------------------------------------
   Earth Station Power Requirements                     Value                                                Units
   ------------------------------------------------------------------------------------------------------------------
   EIRP per carrier                                    73.11                                                  dBW
   HPA power per carrier                               14.75                                                  dBW
   Uplink power control                                    6                                                  dB
   HPA output back off                                     1                                                  dB
   Waveguide loss                                          4                                                  dB
   Filter truncation loss                                  0                                                  dB
   Number of HPA carriers                                  1
   Total HPA power required                            25.75                                                  dBW
   Required HPA power capability                      376.24                                                    W
   Spectral power density                             -24.38                                                dBW/4kHz
   ------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                                   Page 17 of 27
<PAGE>

<TABLE>
<CAPTION>
    ---------------------------------------------------------------------------------------------------------------------
    Space Segment Utilization                                  Value                                         Units
    ---------------------------------------------------------------------------------------------------------------------
    <S>                                                        <C>                                           <C>
    Information rate (inc overhead)                            40.95                                          Mbps
    Transmit rate                                               54.6                                          Mbps
    Symbol rate                                                 27.3                                         MBaud
    Occupied bandwidth                                         32.76                                           MHz
    Noise bandwidth                                            75.15                                         dB.Hz
    Minimum allocated bandwidth required                       35.49                                           MHz
    Allocated transponder bandwidth                             35.5                                           MHz
    Allocated transponder bandwidth                            98.61                                            %
    Carriers per transponder by bandwidth usage                 1.01
    Used transponder power                                     44.51                                           dBW
    Used transponder power                                       100                                            %
    ---------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                                   Page 18 of 27
<PAGE>

Exhibit A-1(b) Redundant Service - Los Angeles Link Budget

<TABLE>
<CAPTION>
    -------------------------------------------------------------------------------------------------------------------
    Service Name                                           iBEAM
    Coverage                                               CONUS
    Uplink earth station                                   Steele Valley
    Downlink earth station                                 CONUS EIRP
    Satellite name                                         Telstar 7
    ------------------------------------------------------------------------------------------------------------------
    <S>                                                     <C>             <C>                         <C>
    Link Input Parameters                                   Uplink          Downlink                     Units
    ------------------------------------------------------------------------------------------------------------------
    Site latitude                                           33.95N           48.93N                     degrees
    Site longitude                                          117.40W          119.43W                    degrees
    Magnetic variation                                       13.7E            19.0E                     degrees
    Site altitude                                             0.2              0.2                         km
    Frequency                                                  14               12                        GHz
    Polarization                                           Vertical        Horizontal
    Rain-climatic zone (* prefix Crane)                        D                D
    Availability (average year)                              99.7             99.7                         %
    Water vapour density                                       10                5                       gm/m3
    Surface temperature                                        20               15                     (degrees)C
    Antenna aperture                                          3.5                1                       metres
    Antenna efficiency / gain                                  65               65                  % (* prefix dBi)
    Coupling loss                                               3              0.1                         dB
    Antenna tracking / mispoint error                         0.1              0.1                         dB
    LNB noise figure / temp                                                    *35                  dB (* prefix K)
    Antenna noise                                                               50                         K
    Adjacent carrier interference                              28               28                         dB
    Adjacent satellite interference                            28               28                         dB
    Cross polarization interference                            28               28                         dB
    Uplink station HPA output back-off                          1                                          dB
    Number of carriers / HPA                                    1
    HPA C/IM (up)                                              30                                          dB
    Uplink power control                                        6                                          dB
    Uplink filter truncation loss                               0                                          dB
    ---------------------------------------------------------------------------------------------------------------
    Satellite Input Parameters                               Value                                       Units
    ---------------------------------------------------------------------------------------------------------------
    Satellite longitude                                       129W                                       degrees
    Transponder type                                          TWTA
    Receive G/T                                                1.4                                         dB/K
    Saturation flux density                                    -96                                        dBW/m2
    Satellite attenuator pad                                     6                                          dB
    Transmit EIRP at saturation                                 47                                         dBW
    Transponder bandwidth                                       36                                         MHz
    Input back off total                                         1                                          dB
    Output back off total                                     2.49                                          dB
    Intermodulation interference                              12.5                                          dB
    ---------------------------------------------------------------------------------------------------------------
    Carrier/Link Input Parameters                            Value                                        Units
    ---------------------------------------------------------------------------------------------------------------
    Modulation                                               4-PSK
    Required bit error rate performance                      10^-7
    ---------------------------------------------------------------------------------------------------------------
</TABLE>

                                                                   Page 19 of 27
<PAGE>

<TABLE>
     <S>                                                        <C>              <C>             <C>           <C>
     Required Eb/No without FEC coding                             11.31                                          dB
     Required Eb/No with FEC coding                                  5.5                                          dB
     Information rate                                                 30                                         Mbps
     Overhead                                                          5                                          %
     FEC code rate                                                  0.75
     Spread factor                                                   1.2
     Carrier spacing factor                                          1.3
     Bandwidth allocation step size                                  0.1                                         MHz
     System margin                                                     1                                          dB
     ------------------------------------------------------------------------------------------------------------------------
     Calculations at Saturation                                     Value                                       Units
     ------------------------------------------------------------------------------------------------------------------------

     Gain 1m^                                                      44.38                                        dB/m2
     Uplink C/No                                                   95.52                                        dB.Hz
     Downlink C/No                                                 89.92                                        dB.Hz
     Total C/No                                                    88.86                                        dB.Hz
     Uplink EIRP for saturation                                    72.72                                         dBW
     ------------------------------------------------------------------------------------------------------------------------
     General Calculations                                          Uplink          Downlink                     Units
     ------------------------------------------------------------------------------------------------------------------------
     Elevation                                                     48.61             33.1                      degrees
     True azimuth                                                 200.18           192.61                      degrees
     Compass bearing                                              186.48           173.61                      degrees
     Path distance to satellite                                 37165.77         38339.27                         km
     Propagation time delay                                         0.12             0.13                      seconds
     Antenna efficiency                                               65               65                         %
     Antenna gain                                                  52.34            40.12                        dBi
     Availability (average year)                                    99.7             99.7                         %
     Link downtime (average year)                                 26.298           26.298                       hours
     Availability (worst month)                                       99               99                         %
     Link downtime (worst month)                                   7.305            7.305                       hours
     Spectral power density                                       -19.99             5.14                      dBW/4kHz
     ------------------------------------------------------------------------------------------------------------------------
     Uplink Calculation                                            Clear          Rain Up        Rain Dn        Units
     ------------------------------------------------------------------------------------------------------------------------
     Uplink transmit EIRP                                          70.34            70.34         70.34          dBW
     Transponder input back-off (total)                                1                1             1           dB
     Input back-off per carrier                                    -2.38            -2.38         -2.38           dB
     Mispoint loss                                                   0.1              0.1           0.1           dB
     Free space loss                                              206.77           206.77        206.77           dB
     Atmospheric absorption                                         0.13             0.13          0.13           dB
     Tropospheric scintillation fading                              0.19             0.19          0.19           dB
     Atmospheric losses total                                       0.32             0.32          0.32           dB
     Total path loss (excluding rain)                              207.2            207.2         207.2           dB
     Rain attenuation                                                  0             0.85             0           dB
     Uplink Power Control                                              0                6             0           dB
     Uncompensated Rain Fade                                           0                0             0           dB
     C/No (thermal)                                                93.15            93.15         93.15         dB.Hz
     C/N (thermal)                                                 19.13            19.13         19.13           dB
     C/ACI                                                            28               28            28           dB
     C/ASI                                                            28               28            28           dB
          ------------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                                   Page 20 of 27
<PAGE>

<TABLE>
     <S>                                                          <C>              <C>           <C>            <C>
     C/XPI                                                            28               28            28           dB
     C/IM                                                             30               30            30           dB
     Eb/(No*Io)                                                    16.49            16.49         16.49           dB
     ------------------------------------------------------------------------------------------------------------------------
     Downlink Calculation                                          Clear           Rain Up        Rain Dn       Units
     ------------------------------------------------------------------------------------------------------------------------
     Satellite EIRP total                                             47               47            47          dBW
     Transponder output back-off (total)                            2.49             2.49          2.49           dB
     Output back-off per carrier                                   -3.87            -3.87         -3.87           dB
     Satellite EIRP per carrier                                    43.13            43.13         43.13          dBW
     Mispoint loss                                                   0.1              0.1           0.1           dB
     Free space loss                                               205.7            205.7         205.7           dB
     Atmospheric absorption                                         0.11             0.11          0.11           dB
     Tropospheric scintillation fading                              0.22             0.22          0.22           dB
     Atmospheric losses total                                       0.33             0.33          0.33           dB
     Total path loss (excluding rain)                             206.13           206.13        206.13           dB
     Rain attenuation                                                  0                0          0.64           dB
     Noise increase due to precipitation                               0                0          1.41           dB
     Downlink degradation (DND)                                        0                0          2.05           dB
     Total system noise                                            90.46            90.46        125.14           K
     Figure of merit (G/T)                                         20.45            20.45         19.05          dB/K
     C/No (thermal)                                                86.05            86.05         84.01         dB.Hz
     C/N (thermal)                                                 12.04            12.04          9.99           dB
     C/ACI                                                            28               28            28           dB
     C/ASI                                                            28               28            28           dB
     C/XPI                                                            28               28            28           dB
     C/IM                                                           12.5             12.5          12.5           dB
     Eb/(No*Io)                                                     8.11             8.11          6.96           dB
     ------------------------------------------------------------------------------------------------------------------------
     Totals per Carrier (End-to-End)                               Clear           Rain Up        Rain Dn       Units
     ------------------------------------------------------------------------------------------------------------------------
     C/No (thermal)                                                85.28            85.28         83.51         dB.Hz
     C/N (thermal)                                                 11.27            11.27          9.49           dB
     C/ACI                                                         24.99            24.99         24.99           dB
     C/ASI                                                         24.99            24.99         24.99           dB
     C/XPI                                                         24.99            24.99         24.99           dB
     C/IM                                                          12.42            12.42         12.42           dB
     C/(No*Io)                                                     82.51            82.51         81.48         dB.Hz
     C/(N*I)                                                        8.49             8.49          7.47           dB
     Eb/(No*Io)                                                     7.52             7.52           6.5           dB
     System margin                                                     1                1             1           dB
     Net Eb/(No*Io)                                                 6.52             6.52           5.5           dB
     Required Eb/(No*Io)                                             5.5              5.5           5.5           dB
     Excess margin                                                  1.02             1.02             0           dB
     ------------------------------------------------------------------------------------------------------------------------
     Earth Station Power Requirements                               Value                                       Units
     ------------------------------------------------------------------------------------------------------------------------
     EIRP per carrier                                              70.34                                         dBW
     HPA power per carrier                                            18                                         dBW
     Uplink power control                                              6                                          dB
     HPA output back off                                               1                                          dB
          ------------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                                   Page 21 of 27
<PAGE>

<TABLE>
     <S>                                                <C>                                                    <C>
     Waveguide loss                                                    3                                          dB
     Filter truncation loss                                            0                                          dB
     Number of HPA carriers                                            1
     Total HPA power required                                         28                                         dBW
     Required HPA power capability                                 631.6                                          W
     Spectral power density                                       -19.99                                       dBW/4kHz
     ------------------------------------------------------------------------------------------------------------------------
     Space Segment Utilization                                      Value                                        Units
     ------------------------------------------------------------------------------------------------------------------------
     Information rate (inc overhead)                                31.5                                         Mbps
     Transmit rate                                                    42                                         Mbps
     Symbol rate                                                      21                                        MBaud
     Occupied bandwidth                                             25.2                                         MHz
     Noise bandwidth                                               74.01                                        dB.Hz
     Minimum allocated bandwidth required                           27.3                                         MHz
     Allocated transponder bandwidth                                27.3                                         MHz
     Allocated transponder bandwidth                               75.83                                          %
     Carriers per transponder by bandwidth usage                    1.32
     Used transponder power                                        43.13                                         dBW
     Used transponder power                                        72.85                                          %
     Carriers per transponder by power usage                        1.37
     Carriers per transponder limited by:-              Transponder bandwidth [1.32 carriers]
     ------------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                                   Page 22 of 27
<PAGE>

                                   EXHIBIT B

                  CUSTOMER'S CONTACTS FOR OPERATIONAL NOTICES

Customer Contact No. 1

Name:  iBEAM Network Operations
Telephone: 877-523-1700 or 408-523-1700

Customer Contact No. 2

Name:  Pet Kumler
Title: Director, Network Operations
Telephone: 408-523-1710

Customer Contact No. 3

Name:  Joseph Thurman
Title: Executive Director Operations
Telephone: 408-523-1683

                                                                   Page 23 of 27
<PAGE>

                                   Exhibit C

                         Satellite Terms & Conditions

1.  Application of Terms and Conditions; Exclusion of Other or Additional Terms
    These Standard Terms and Conditions are applicable to all Communications
    Services provided by Williams to the Customer ("Customer") pursuant to this
    Service Agreement ("Agreement"). COMMUNICATIONS SERVICES WILL BE PROVIDED ON
    THE FOLLOWING TERMS AND CONDITIONS AND THE TERMS AND CONDITIONS OF THE
    AGREEMENT AND IN THE EVENT OF ANY CONFLICTS BETWEEN THE TERMS AND CONDITIONS
    OF THIS EXHIBIT C AND THE TERMS AND CONDITIONS OF THE AGREEMENT, THE TERMS
    AND CONDITIONS OF THIS EXHIBIT C SHALL CONTROL.

2.  Definitions  For purposes of this Agreement, the following terms shall have
    the definitions set forth in this Section 2, as follows:

    "Applicable Carrier" shall mean the person, corporation, partnership, firm
    or other entity in control of the satellite, satellite transponder,
    microwave link, uplink, downlink, analog copper and/or fiber optic
    facilities being used to provide the Communications Services.

    "Applicable Carrier's Tariff" shall mean the Applicable Carrier's Tariff for
    Allowances for Interruptions, setting forth the policies of the Applicable
    Carrier with regard to credits, allowances, refunds or payments in the event
    of an interruption of Communications Services caused by the Applicable
    Carrier or the Applicable Carrier's equipment, as well as the policies of
    the Applicable Carrier with regard to payments, penalties and charges for
    cancellation of Communications Services by the Customer.

    "Communications Services" shall include (without limitation) satellite
    transponder, transponder uplink/downlink, fiber optic, telephone line and/or
    microwave capacity, as applicable to the services requested by Customer.

    "Customer Agent" shall mean any person, corporation, partnership, firm or
    other entity transmitting signals to, from or via a satellite transponder or
    using other Communications Services with the permission of or on behalf of a
    Customer.

    "Exchange Rates" shall mean the rates at which US dollars are exchanged for
    the relevant foreign currency as published in The Wall Street Journal, U.S.
    Edition.

    "Uplink/Downlink Agent" shall mean the person, corporation, partnership,
    firm or other entity engaged by Customer to transmit or receive Customer's
    signal to the satellite transponder being used to provide the Communications
    Services.

3.  Provision of Communications Services  Williams shall provide Customer, and
    Customer shall accept from Williams as specified by Customer on the terms
    and conditions set forth herein.

4.  International Service   Rates for international Communications Services are
    priced to Customer based on the Exchange Rate at the time service is
    contracted for, subject to monthly adjustments to reflect changes in the
    applicable published Exchange Rate on the first day of each month. Should
    the carrier of non-U.S. Communications Services modify its tariff or the
    technical parameters for Communications Services during the term of this
    Agreement, Williams shall have the right correspondingly to modify the
    tariff or rate or technical parameters of its Communications Services to
    Customer.

5.  Obligations of the Customer Customer shall make all arrangements with other
    common carriers, stations, networks, sponsors, music licensing
    organizations, performers, representatives or other parties for the
    authorizations necessary to avail itself of the Communications Services.
    Williams shall be indemnified, defended and saved harmless by Customer from
    any liability arising out of failure to make such arrangements. Customer
    shall not use Communications Services for an unlawful purpose, including
    (without limitation) any use which constitutes a violation of any state or
    federal obscenity laws. Williams shall have the right to terminate
    Communications Services provided hereunder without liability to Customer in
    the event that Williams, its officers, employees or agents, or the
    Applicable Carrier, its officers, employees or agents, becomes the subject
    of any investigation, or is threatened with or made a party to any
    administrative proceeding or litigation, related to the alleged illegal use
    of the Communications Services by the Customer.

6.  Non-Interference for Satellite Transmissions and Use of Other Communications
    Services

    (a) All transmissions to and from the satellite transponder or other use of
        Communications Services made by Customer and/or a Customer Agent in
        connection with use of Communications Services pursuant to this
        Agreement shall comply with all of the rules and regulations of the
        Federal Communications Commission ("FCC"), other governmental agencies,
        carriers or other authorities applicable to Customer and/or each
        Customer Agent with respect to the Satellite Transponder or the
        Communications Services. Customer and each Customer Agent will follow
        the established practices and procedures of the Applicable Carrier for
        frequency coordination and will not utilize the Communications Services
        in a manner which, under standard engineering practice, would or might
        interfere with the use of or cause physical harm to any satellite
        transponder, the satellite or any other communications facility. If, in
        Williams, the Applicable Carrier's or other carrier's judgment,
        Customer's or any Customer Agent's transmissions to or from or
        utilization of the satellite transponder or other Communications
        Services (whether directly or through a Customer Agent), interferes with
        or causes physical harm to any satellite transponder, the satellite or
        any other communications facility, Customer agrees to cease or cause to
        be ceased immediately all transmissions to and utilization of the
        satellite transponder or other Communications Services upon notice
        thereof by Williams or the carrier until such time as such transmission
        or utilization shall not, in Williams' or the carrier's judgment,
        interfere with and shall not cause physical harm to any satellite
        transponder, the satellite or any other

                                                                   Page 24 of 27
<PAGE>

         communications facility. In such event and in addition to Williams'
         other rights and remedies hereunder, Customer agrees that its rights to
         use a portion of the satellite transponder or other Communications
         Services in accordance with this Agreement shall be subject to
         Williams' right to terminate Communications Services and all of
         Customer's rights hereunder without liability to Customer and to take
         such action as may be necessary, appropriate or desirable to terminate
         any such interference or physical harm by Customer and each Customer
         Agent.
               (b)  To ensure that Customer and each Uplink/Downlink Agent's
                    transmissions to and from the satellite transponder and
                    Customer's utilization of the Communications Services
                    (whether directly or through an Uplink/Downlink Agent) does
                    not so interfere with or cause physical harm to any
                    transponder or satellite, Customer and each Uplink/Downlink
                    Agent, prior to any transmission to the satellite
                    transponder, must satisfy the uplink access requirements set
                    forth by the Applicable Carrier. Further, without limiting
                    the generality of the foregoing, if Customer's use involves
                    video broadcasting, Customer agrees to comply in all
                    respects with Section 25.308 of the FCC rules regarding the
                    Automatic Transmitter Identification System.

7.   Pre-emptible Nature of Communications Services The satellite transponder
     and other Communications Services provided herein are not normally
     protected, other than as provided in Section 8 herein, and may be preempted
     and Customer acknowledges and agrees that it sometimes may be necessary or
     advisable for the Applicable Carrier or other carrier deliberately to
     preempt or interrupt Customer's use of the Communications Services in order
     to protect the overall performance of each satellite, fiber optic network
     or other communications facility, or other technical reasons. Such
     decisions shall be made by the owners or operators of the satellite, fiber
     optic network or other communications facility at their sole discretion and
     Williams shall have no liability to Customer as a result of such decisions.

9.   Fully Protected Transponder. "Fully-Protected" transponders, in the event
     of failure, shall be restored by the Applicable Carrier using spare
     equipment that may be available on the satellite at the time of failure, or
     on a comparable transponder on the same satellite, or on another Applicable
     Carrier satellite then in orbit, except when the failure is caused by
     Customer. Fully Protected transponders are not preemptible.

9.   Allowances for Interruption
     (a)  Allowances for interruption of Communications Service will be in
          accordance with the Applicable Carrier's Tariff. In the absence of an
          Applicable Carrier's Tariff, Williams' policy shall apply as follows:
          (i) When an interruption of a Communications Service occurs for a
          period of 60 seconds or more, credit is allowed on the basis of 5
          minutes for each 5 consecutive minutes or fraction thereof of
          interruption; (ii) Two or more interruptions occurring during any
          period of 5 consecutive minutes shall be considered one interruption;
          and (iii) An interruption of either the audio or visual portion of the
          television channel shall be considered an interruption of both.
     (b)  An allowance will not be made where Customer fails to transmit or
          receive a television, data or voice channel as a result of, or
          attributable in whole or in part to: (i) Customer's negligence or
          willful acts, or the negligence or willful acts of its officers,
          directors, agents, employees, subsidiaries, parents, affiliates,
          customers, authorized users and viewing subscribers, or any of them;
          (ii) The failure of local channels, transmission lines or equipment
          provided by Customer, its subsidiaries, parents, affiliates,
          authorized users, viewing subscribers, Customer Agents or any of them;
          (iii) Sun outages, heavy precipitation or heavy cloud cover; or (iv)
          Customer's failure to use the channel ordered.
     (c)  In no event shall Williams be liable for allowances for interruption
          unless the claim for such allowance is made within fifteen (15) days
          after the date of the interruption.

10.  Denial of Service   For any violation of the Communications Act of 1934, as
     amended, or any Rules, Regulations or Orders of the FCC or of the terms of
     this Agreement by Customer, or the imposition by the FCC or any
     governmental authority having jurisdiction of conditions on the provision
     of Communications Services which are unacceptable to Williams or the
     Applicable Carrier, Williams may either temporarily deny service or
     terminate the service without incurring liability to Customer.

11.  Cancellation by Customer  Except as specifically provided herein,
     Communications Service may only be canceled upon the occurrence of all the
     following: written notice to Williams; payment of total hourly, monthly or
     annual charges due for service previously provided and for scheduled
     service that has not been provided as of the date of cancellation; and
     payment of all other sums otherwise due through the term of the Fixed-Term
     Service to be provided pursuant to this Agreement.

12.  Title to Communications Facilities  This Agreement shall not, and shall not
     be deemed to, convey to Customer title of any kind to any of the satellite
     transponders, transponder uplinks/downlinks, fiber optic links, telephone
     lines, microwave facilities or other facilities utilized in connection with
     the Communications Services.

                                                                   Page 25 of 27
<PAGE>

EXHIBIT D Ramp-Up and Pricing Schedule

<TABLE>
<CAPTION>
----------------------------------------------------------------------------------------------------------------------------------
CONUS Solution              QTR 1   QTR 2     QTR 3   QTR 4   QTR 1     QTR 2    QTR 3    QTR 4    QTR 1     QTR 2   QTR 3   QTR 4
                             `00     `00      `00     `00     `01       `01      `01      '01       `02       `02    `02     '02
----------------------------------------------------------------------------------------------------------------------------------
<S>                       <C>     <C>      <C>      <C>      <C>      <C>      <C>      <C>      <C>      <C>       <C>     <C>
Service Parameters
 Aggregate Data Rate       10Mbps   15Mbps   20Mbps   25Mbps   30Mbps   35Mbps   45Mbps   50Mbps   55Mbps   60Mbps   65Mbps  70Mbps
 XP #1 Data Rate           10Mbps   15Mbps   20Mbps   25Mbps   30Mbps   35Mbps   35Mbps   35Mbps   35Mbps   35Mbps   35Mbps  35Mbps
 XP #1 Power Required
     in MHz                 10MHz    15MHz    20MHz    25MHz    30MHz     FULL     FULL     FULL     FULL     FULL     FULL    FULL
 XP #2 Data Rate             n.a     n.a      n.a      n.a      n.a      n.a     10Mbps   15Mbps   20Mbps   25Mbps   30Mbps  35Mbps
 XP #2 Power Required
     in MHz                  n.a     n.a      n.a      n.a      n.a      n.a      10MHz    15MHz    20MHz    25MHz    30MHz    FULL
-----------------------------------------------------------------------------------------------------------------------------------
Service Fees         NRE      Monthly Recurring Charges
-----------------------------------------------------------------------------------------------------------------------------------
Uplink with
 Redundancy
 Total Uplink      $3,000 $12,960  $18,000  $20,160  $20,880  $21,600  $22,320  $23,760  $24,480  $25,200  $25,920  $26,640  $27,3
 Rack Charges      $4,000   T.B.D    T.B.D    T.B.D    T.B.D    T.B.D    T.B.D    T.B.D    T.B.D    T.B.D    T.B.D    T.B.D    T.B.D
Space Segment
 XP #1 - TelStar
    Ku - 36 MHz           $75,000 $100,000 $128,000 $150,000 $165,000 $175,000 $175,000 $175,000 $175,000 $175,000 $175,000 $175,000
 XP #2 First Right
    of Refusal             $7,500   $7,500   $7,500   $7,500   $7,500   $7,500       $0       $0       $0       $0       $0       $0
 XP #2 - TelStar
    7 Ku - 36 MHz            n.a.     n.a.     n.a.     n.a.     n.a.     n.a.  $75,000 $100,000 $128,000 $150,000 $165,000 $175,000
------------------------------------------------------------------------------------------------------------------------------------
          Totals   $7,000 $95,460 $125,500 $155,600 $178,380 $194,100  204,820 $273,760 $299,480 $328,200 $350,920 $366,640 $377,3
                                                                                               Approximate Term Value     $8,850,8
------------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<TABLE>
<CAPTION>
Bursting - 24 hour notice is required to burst with a One-Time fee of $1,000 per event.
- -----------------------------------------------------------------------------------------------------------------
<S>                                                     <C>
Transponder Assumptions                                 Additional Charges Not Included Above...
XP Protection = Fully Protected                         Rack Space
Full Transponder - Full Power & Bandwidth               2 Racks Per Teleport Included in Monthly Uplink Charges
Data rate assumes Proportional Power & Bandwidth        $900 per rack, per month, per location for the 1/st/ XP
Data rate can only ramp-up                              $800 per rack, per month, per location for 2/nd/ XP
Term is 3 Years                                         $700 per rack, per month, per location for the 3/rd/ XP
                                                        Pricing does not include local loop charges
- -----------------------------------------------------------------------------------------------------------------
</TABLE>

                                [GRAPHIC OMITTED]

                                                1.0m
Gain (db) at 11.95 GHz:                         Ku-Band
Aperture Efficiency                             40.53
3 dB Beam Width                                 .72
10 db Beam Width                                2.0 (degree)
Noise Temperature ((degree)K):
30(degree) Elevation                            50(degree)
Cross Polarization - On Axis                    30 dB
VSWR: (Maximum                                  1.3 dB
F/D Ratio                                        .6
Surface Accuracy (typical RMS)                   .012"

--------------------------------------------------------------------------------
For additional information, contact Greg Hurt, VSAT Sales Manager

*Specifications subject to change without notice.

[LOGO] Channel Master Division of Avnet, Inc.
P.O. Box 1416, Industrial Park Drive, Smithfield, North Carolina 27577
Telephone: (919) 934-9711 FAX: (919) 989-2200

                                    Printed in USA 7/29 IBM #8689 (16212) Rev B.

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