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                                                                   EXHIBIT 10.14

                        CONFIDENTIAL TREATMENT REQUESTED

                         MASTER HIGH SPEED DATA SERVICES
                                ACCESS AGREEMENT

This MASTER HIGH SPEED DATA SERVICES ACCESS AGREEMENT (this "Agreement") is
entered into as of the 16th day of March, 1999 ("Effective Date"), by and
between I(3)S, INC., a Texas corporation, with an address at 1440 Corporate
Drive, Irving, Texas 75038 ("I(3)S"); and GLOBAL INTERACTIVE COMMUNICATIONS
CORP., a Delaware corporation, with an address at 1901 N. Glenville Dr., Suite
800, Richardson, TX 75081 ("Global"). I(3)S and Global are hereinafter sometimes
referred to individually as a "party", and collectively as the "parties".

                                    RECITALS

WHEREAS, Global currently provides bundled telecommunications services,
including local and long-distance telephony, internet access and video services
to multiple dwelling units ("MDUs") and their residents in certain metropolitan
markets throughout the United States under an agreement between the MDU owner
and Global (each, a "Right-of-Entry");

WHEREAS, I(3)S provides broadband Internet Protocol network services, including,
without limitation, high speed data services, as more specifically described in
Exhibit B attached hereto and incorporated herein by reference ("HSDS"), to
multiple system franchise cable operators ("MSOs"), private cable operators
("PCOs"), and real estate investment trusts ("REITs"), nationwide; and

WHEREAS, Global and I(3)S desire to provide HSDS to MDUs, current and future, as
evidenced by the attachment of an MDU Rider, the form of which is attached
hereto as Exhibit A, which MDUs are served by Global in accordance with the
terms of this Agreement (each, a "Property", and collectively, the
"Properties").

NOW, THEREFORE, the parties hereto hereby covenant and agree as follows:

                                    ARTICLE 1
                         REPRESENTATIONS AND WARRANTIES

1.1    REPRESENTATIONS AND WARRANTIES OF GLOBAL. In order to induce I(3)S to
       enter into this Agreement, Global represents and warrants (which
       representations and warranties shall survive the delivery of this
       Agreement) as follows:

          (a)  ORGANIZATION AND QUALIFICATION. Global is a corporation duly
               organized and validly existing and in good standing under the
               laws of the State of Delaware; has all requisite power and
               authority to own its property and assets and to carry on its
               business as, and in the places where, such property and assets
               are owned or such business is now conducted; and is duly
               qualified to do business

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Global HSDS Agreement
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               and is in good standing in every other jurisdiction in which such
               qualification is necessary or desirable.

          (b)  NO DEFAULTS. Global is not in default under any instrument or
               agreement existing as of the date hereof which Global is bound
               that may adversely affect its ability to perform its obligations
               under this Agreement; and no default hereunder has occurred.

          (c)  TITLE. Global has good, valid and indefeasible title to its
               property that pertains in any way to HSDS, and all such property
               is free and clear of all adverse claims, interests and liens,
               except as has been heretofore disclosed in writing to I(3)S.

          (d)  ENFORCEABLE OBLIGATIONS; AUTHORIZATION. This Agreement is a
               legal, valid and binding obligation of Global, enforceable in
               accordance with its terms; the making and performance by Global
               of this Agreement have been duly authorized by all necessary
               action; are within the power and authority of Global; will not
               contravene or violate any legal requirement, shareholders
               agreement of Global, or charter of Global; and will not result in
               the breach of, or constitute a default under, any agreement,
               instrument, judgement, license, order, franchise or permit to
               which Global is a party, or any of its property may be bound or
               affected.

          (e)  PERMITS, LICENSES, ETC. Global possesses all material permits,
               licenses, franchises rights, trademarks, trademark rights, trade
               names, trade name rights and copyrights which are required to
               conduct the business of HSDS.

          (f)  MDU PROPERTY AND OPERATING AGREEMENTS. All Rights-Of-Entry or
               operating agreements to which Global is a party that pertain to
               HSDS are in full force and effect, and no default has occurred
               with regard to any such Right-Of-Entry or operating agreement
               that would adversely affect the provision of HSDS at any
               Property.

          (g)  INSURANCE. Global carries insurance with reputable insurers in
               respect of Global's property pertaining to HSDS, in such amounts
               and against such risks as are customarily maintained by other
               persons of similar size engaged in similar businesses.

          (h)  RIGHT OF ACCESS. Global possesses the right to grant a right of
               access or entry for the provision of HSDS to all Properties
               during the term of this Agreement in favor of I(3)S.

          (i)  SURVIVAL OF REPRESENTATIONS AND WARRANTIES. All representations
               and warranties made by or on behalf of Global shall survive the
               execution and delivery of this Agreement, and any investigation
               at any time made by or on behalf of I3S shall not diminish its
               rights to rely thereon.

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Global HSDS Agreement
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1.2   REPRESENTATIONS AND WARRANTIES OF I(3)S. In order to induce Global to
      enter into this Agreement, I(3)S represents and warrants (which
      representations and warranties shall survive the delivery of this
      Agreement) as follows:

          (a)  ORGANIZATION AND QUALIFICATION. I(3)S is a Texas corporation duly
               organized and validly existing and in good standing under the
               laws of the State of Texas; has all requisite power and authority
               to own its property and assets and to carry on its business as,
               and in the places where, such property and assets are owned or
               such business is now conducted; and is duly qualified to do
               business and is in good standing in the State of Texas and in
               every other jurisdiction in which such qualification is necessary
               or desirable.

          (b)  NO DEFAULTS. I(3)S is not in default under any instrument or
               agreement existing as of the date hereof which I(3)S is bound
               that may adversely affect its ability to perform its obligations
               under this Agreement; and no default hereunder has occurred and
               is continuing.

          (c)  TITLE. I(3)S has good, valid and indefeasible title to its
               property that pertains in any way to HSDS, and all such property
               is free and clear of all adverse claims, interests and liens,
               except as has been heretofore disclosed in writing to Global.

          (d)  ENFORCEABLE OBLIGATIONS; AUTHORIZATION. This Agreement is a
               legal, valid and binding obligation of I(3)S, enforceable in
               accordance with its terms; the making and performance by I(3)S of
               this Agreement have been duly authorized by all necessary action;
               are within the power and authority of I(3)S; will not contravene
               or violate any legal requirement, shareholders agreement of
               I(3)S, or articles of incorporation or bylaws of I(3)S; and will
               not result in the breach of, or constitute a default under, any
               agreement, instrument, judgement, license, order, franchise or
               permit to which I(3)S, is a party, or any of its property may be
               bound or affected.

          (e)  PERMITS, LICENSES, ETC. I(3)S possesses all material permits,
               licenses, franchises rights, trademarks, trademark rights, trade
               names, trade name rights and copyrights which are required to
               conduct the business of HSDS.

          (f)  INSURANCE. I(3)S carries insurance with reputable insurers in
               respect of I(3)S's property pertaining to HSDS, in such amounts
               and against such risks as is customarily maintained by other
               persons of similar size engaged in similar businesses.

          (g)  I(3)S LICENSES. I(3)S possesses all requisite licenses from third
               parties necessary to provide HSDS to Global's Properties and
               their residents.

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Global HSDS Agreement
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          (h)  SURVIVAL OF REPRESENTATIONS AND WARRANTIES. All representations
               and warranties made by or on behalf of I(3)S shall survive the
               execution and delivery of this Agreement, and any investigation
               at any time made by or on behalf of Global shall not diminish its
               rights to rely thereon.

                                    ARTICLE 2
                                      TERM

2.1   TERM. This Agreement shall be co-terminus with the term (including any
      extensions thereof) of any and all individual Rights-Of-Entry; provided,
      however, that this Agreement shall have a term of three (3) years from the
      Effective Date as to the parties' other obligations hereunder; and further
      provided, however, that the initial term may be automatically extended
      after the third anniversary of the Effective Date for additional one (1)
      year periods unless one party notifies the other party in writing not less
      than ninety (90) days prior to the then anniversary date of the notifying
      party's intent to terminate this Agreement. With respect to the
      Properties, Global represents and warrants that the average remaining
      minimum term of the individual Rights-Of-Entry pertaining to said
      Properties is not less than five (5) years as of the date I3S is scheduled
      to commence providing service thereto.

                                    ARTICLE 3
                                   EXCLUSIVITY

3.1   EXCLUSIVITY. Except as set forth in Exhibit B attached hereto, for the
      term of this Agreement and any renewals hereof, I(3)S shall be the
      exclusive provider of HSDS over Global's systems at properties located in
      the State of Virginia and the greater metropolitan areas of Boston, MA;
      Seattle, WA; Portland, OR; Washington, DC; and Birmingham, AL (the
      "Exclusive Markets"). Such exclusivity shall be extended for the term of
      any Right-Of-Entry pursuant to which I(3)S serves a Property.
      Notwithstanding the foregoing, if I3S declines to serve any property not
      meeting the standards set forth in Section 8.5, then Global may provide
      such service itself or obtain service from any third party. For the term
      of this Agreement and any renewals hereof, I(3)S shall not provide video
      or telephony services competing with those of Global in the aforementioned
      exclusive markets (but not including streaming media content created by or
      on behalf of I(3)S); provided, this restriction shall not prohibit I(3)S
      from contracting with third parties to provide HSDS, which third parties
      provide such competing services to other properties within the Exclusive
      Markets; and further provided, however, that this restriction shall not
      preclude subscribers from receiving IP or internet protocol internet based
      video or telephony services via third parties.

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Global HSDS Agreement
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                                    ARTICLE 4
                         AFFIRMATIVE COVENANTS OF GLOBAL

4.1   In consideration of the mutual agreements of the parties contained herein,
      Global unconditionally covenants and agrees to do and perform, or cause to
      be done and performed, the following:

         (a)  Subject to the terms and provisions of the existing agreements
              with other parties that establish certain rights of entry in favor
              of said parties pertaining to certain current Properties, Global
              shall maintain, or cause to be maintained, in full force and
              effect the right of entry granted to I(3)S hereunder to provide
              HSDS to the Properties throughout the term of this Agreement, and
              after the sale, assignment or conveyance of any Property that is
              covered by this Agreement, subject to the terms of the
              Right-Of-Entry.

         (b)  Global shall maintain its corporate existence and remain in good
              standing under the laws of and in every other jurisdiction in
              which such qualification to do business is necessary or desirable.

         (c)  Global shall not become in default under any instrument or
              agreement which Global is bound that may adversely affect its
              ability to perform its obligations under this Agreement.

         (d)  Global shall possess and maintain good, valid, indefeasible and
              marketable title to its property that pertains in any way to HSDS,
              and all such property shall remain free and clear of any adverse
              claims, interests and liens, except as has been heretofore
              disclosed in writing to I(3)S.

         (e)  Global shall maintain in full force and effect all material
              permits, licenses, franchise rights, trademarks, trademark rights,
              trade names, trade name rights and copyrights which are required
              to conduct the business of HSDS.

         (f)  Global shall maintain in full force and effect all Property or
              operating agreements pertaining to the provision of HSDS.

         (g)  Global shall maintain in full force and effect adequate insurance
              with reputable insurers in respect of Global's property pertaining
              to HSDS, in such amounts and against such risks as is customarily
              maintained by other persons of similar size engaged in similar
              businesses.

         (h)  Global shall use its best efforts to assist I(3)S in providing
              HSDS on Properties mutually selected by Global and I(3)S on terms
              and conditions acceptable to I(3)S; which MDU properties shall be
              added as Riders to Schedule I attached hereto and incorporated
              herein by reference for all purposes.

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Global HSDS Agreement
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         (i)  As more specifically described in Exhibit B attached hereto and
              incorporated herein by reference, Global shall assume and timely
              pay all operating and capital costs and expenses, if any,
              associated with any and all:

                     (1)    Monthly recurring Property on-site headend, cabling
                            and wiring maintenance
                     (2)    Leasing agent sales commissions and property owner
                            revenue sharing, provided the decision to offer such
                            commissions and/or revenue sharing, and the amounts
                            thereof, shall be in Global's sole discretion
                     (3)    Insurance on Global capital equipment related to
                            HSDS
                     (4)    Global-specific training for HSDS
                     (5)    Global-specific travel and entertainment
                     (6)    Property CATV or other cabling and wiring upgrades
                     (7)    Adequate on-site Property space for the installation
                            and maintenance of I(3)S equipment
                     (8)    Subject to the terms of the applicable
                            Right-Of-Entry, reasonable access to residents'
                            apartments for the installation and maintenance of
                            customer premise equipment
                     (9)    Monthly customer service representatives (non-1(3)S
                            personnel)
                     (10)   One half (1/2) of the cost of HSDS Advertising and
                            Promotion, provided Global shall not be required to
                            expend more than $1.75 per unit per year at any
                            property

                                    ARTICLE 5
                          AFFIRMATIVE COVENANTS OF I(3)S

5.1   In consideration of the mutual agreements of the parties contained herein,
      I3S covenants and agrees to do and perform, or cause to be done and
      performed, the following:

         (a)  I(3)S shall maintain its corporate existence and remain in good
              standing under the laws of the State of Texas and in every other
              jurisdiction in which such qualification to do business is
              necessary or desirable.

         (b)  I(3)S shall not become in default under any instrument or
              agreement I(3)S is bound that may adversely affected its ability
              to perform its obligations under this Agreement.

         (c)  I(3)S shall possess and maintain good, valid, indefeasible and
              marketable title to its property that pertains in any way to HSDS,
              and all such property shall remain free and clear of any adverse
              claims, interests and liens, except as has been heretofore
              disclosed in writing to Global.

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Global HSDS Agreement
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         (d)  I(3)S shall maintain in full force and effect all material
              permits, licenses, franchise rights, trademarks, trademark rights,
              trade names, trade name rights and copyrights which are required
              to conduct the business of HSDS.

         (e)  I(3)S shall maintain in full force and effect adequate insurance
              with reputable insurers in respect of I(3)S's property pertaining
              to HSDS, in such amounts and against such risks as are customarily
              maintained by other persons of similar size engaged in similar
              businesses.

         (f)  As more specifically described in Exhibit B attached hereto and
              incorporated herein by reference, I(3)S shall assume and pay all
              operating and capital costs and expenses associated with any and
              all:

              (1)    Monthly recurring private Internet exchange points

              (2)    Monthly recurring switch maintenance

              (3)    Monthly recurring POP transport

              (4)    Monthly recurring Dallas network operations center costs
                     (including installation costs)

              (5)    Customer support IP technicians and engineers (NOC, Help
                     Desk and field personnel)

              (6)    I(3)S-specific training

              (7)    Insurance on I(3)S capital equipment

              (8)    I(3)S-specific travel and entertainment

              (9)    Switch site equipment (including installation costs)

              (10)   Peering point routers

              (11)   Private Internet exchange point hardware (including
                     installation costs)

              (12)   I(3)S network infrastructure equipment

              (13)   Transport facilities

              (14)   Backbone transport facilities

              (15)   Peering interconnection facilities

              (16)   Monthly recurring local loop costs

              (17)   Monthly recurring property maintenance (Lce, Router,
                     DSU/CSU)

              (18)   Monthly recurring IP headend maintenance

              (19)   CSR platform and services (non-Global)

              (20)   Internet browser platform user license

              (21)   Property IP equipment (Lce, Router, DSU/CSU)

              (22)   IP master headend equipment

              (23)   Non-recurring local loop transport costs

              (24)   One half (1/2) of the cost of HSDS Advertising and
                     Promotion, provided I(3)S shall not be required to expend
                     more than $1.75 per unit per year at any property

              (25)   Customer billing and collections

         (g)  I(3)S shall refer MDU property owners to Global on a non-exclusive
              basis. I(3)S hereby covenants it shall not refer MDU property
              owners to any other provider of services similar to those provided
              by Global on an exclusive basis.

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Global HSDS Agreement
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         (h)  I(3)S shall offer Global the same revenue share as I(3)S offers to
              any other bundled services provider competing with Global (a
              "Competitor") in the same metropolitan area in which I(3)S is
              serving any Property under this Agreement, under the same terms
              and conditions as this Agreement, for all properties at which
              I(3)S commences providing services on or after the date of
              Global's acceptance of such offer. If I(3)S offers an equity
              investment opportunity to a Competitor in connection with an
              agreement to provide HSDS to such Competitor, I(3)S shall offer
              Global the same equity investment opportunity under the same terms
              and conditions as set forth therein.

                                    ARTICLE 6
             DESCRIPTION OF HIGH SPEED DATA SERVICES PROVIDED BY I(3)S

6.1   DESCRIPTION OF HSDS. During the term of this Agreement, I(3)S shall
      provide, or cause to be provided, the high speed data services, in whole
      or in part, more particularly described and set forth in Exhibit B.
      Notwithstanding the foregoing, I(3)S shall not have the right to provide,
      or to contract with any other party to provide, any video, telephony or
      other services over the IP Network not set forth on Exhibit B at any
      Property, provided, however, this shall not prohibit customers from
      purchasing such services through the Internet independent of I(3)S.

                                    ARTICLE 7
                   DEFINITION OF HSDS SERVICE LEVEL STANDARDS

7.1   DEFINITION OF HSDS SERVICE LEVEL STANDARDS. Subject to the conditions,
      qualifications and limitations set forth herein, including, without
      limitation, those set forth in Exhibit C attached hereto and incorporated
      herein by reference, during the term of this Agreement, I(3)S shall offer,
      or cause to be offered, the service level standards pertaining to various
      aspects of HSDS, as more particularly described and set forth in
      Exhibit C.

7.2   PLANS AND SPECIFICATIONS. At least fifteen (15) days prior to the
      installation of its equipment at any Property, I(3)S shall provide to
      Global a copy of its plans and specifications relating to such
      installation. Global shall review, and shall cause the Property owner to
      review, such plans and specifications and, if either reasonably determines
      the same shall interfere with its existing systems or equipment, or is not
      technically feasible, Global shall notify I(3)S of such party's objections
      thereto in writing within five (5) business days of receiving the plans
      and specifications. I(3)S shall not install its equipment until Global's
      or the Property owner's written objections are resolved to such party's
      reasonable satisfaction.

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Global HSDS Agreement
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                                    ARTICLE 8
             REVENUE ALLOCATION; CUSTOMER ACCESS PRICING; BRANDING;
                                     SERVICE

8.1   REVENUE ALLOCATION. All monthly HSDS revenue generated by customers under
      the Agreement will be collected by I(3)S throughout the term of the
      Agreement; provided, however, that, by the fifteenth (15th) day of each
      calendar month hereafter commencing on the Effective Date I(3)S shall pay
      Global a revenue sharing calculated on the basis of all customer access
      revenue collected by or on behalf of I(3)S (exclusive of, without
      limitation, customer premise equipment installation charges, one-time
      customer service charges, customer equipment sales or leases, sums "passed
      through" on a no-mark up basis collected by or on behalf of I3S, and
      comparable or similar one-time charges) (the "Revenue Sharing Fee")
      actually collected by or on behalf of I(3)S for the immediately preceding
      month in accordance with the following table, except as provided in
      Section 8.6:
<TABLE>
<CAPTION>

                Penetration On Property                   Revenue Sharing Fee
              <S>                                        <C>

                 (Total number of paying
              customers as of the first day of
              the calendar month, divided by
                  total units on Property)
               0% to 10%                                            *
               Greater than 10% to 15%                              *
               Greater than 15% to 20%                              *
               Greater than 20% to 30%                              *
               Greater than 30%                                     *
</TABLE>

8.2   MODIFICATION OF REVENUE SHARING FEES. Twelve (12) months after the date of
      execution of this Agreement, the parties agree to renegotiate the Revenue
      Sharing Fees in good faith in accordance with current market standards,
      such that the Revenue Sharing Fees shall be increased or decreased if
      either party is economically disadvantaged hereunder, or receiving an
      inordinate proportion of the revenue associated with HSDS in relation to
      its investment or contribution to the relationship established hereby or
      to revenue sharing generally offered by other comparable providers of HSDS
      under substantially similar terms and conditions to this Agreement.

8.3   CUSTOMER ACCESS PRICING; MARKET PLANS. With the intent to increase HSDS
      penetration at each Property served under this Agreement, upon
      consultation with Global, I(3)S shall establish the price at which access
      to the HSDS is made available to customers and end-users, provided the
      HSDS shall be competitively priced in the marketplace such that all
      pricing is equal to or less than that charged by comparable providers of
      similar services in the same metropolitan area, excluding promotions or
      offers tailored to single or groups of MDU properties. On a case-by-case
      basis and

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      to the extent any Right-of-Entry provides for a revenue share to the
      Property owner which includes HSDS services or installation fees, I(3)S
      shall include a line-item in subscriber bills in an amount mutually agreed
      upon by the parties, not to exceed four dollars ($4) per customer per
      month, and shall remit such amount in full to Global, who shall in turn
      remit such amount in full to the Property owner. With respect to all
      marketing plans pertaining to HSDS, Global and I(3)S shall mutually
      establish marketing plans. I(3)S shall, at its sole cost, provide an
      on-line kiosk at each Property during the first three (3) months of
      provision of service. I(3)S shall, at its sole cost, provide
      demonstrations and/or promotions for HSDS at each property at least twice
      per calendar year.

8.4   BRANDING. With respect to HSDS, and the promotion thereof, I(3)S shall
      establish the brand names, logos, labels, trademarks, service marks and
      other such identifying promotional characteristics pertaining to the same
      throughout the term of this Agreement. Global and I(3)S shall co-brand
      certain HSDS, including the "Broadband Now!" brand; provided, the parties
      shall equally share the cost of all marketing for co-branded services at
      the properties served.

8.5   SERVICE. Notwithstanding the foregoing, I(3)S hereby agrees to serve any
      properties offered by Global which meet the following standards: (i) the
      property must be rated at least a Class "A", or "B" property by virtue of
      the fact that the monthly rents associated therewith are in excess of
      $1.25 per square foot of rentable space OR the average income of the
      property must be at least $40,000 per annum, as determined by [official
      source of information to be provided by Global], (ii) the property must
      have at least one hundred fifty (150) units, (iii) the remaining term of
      the Right-Of-Entry as of the date on which I(3)S is scheduled to commence
      providing services is at least sixty (60) months, (iv) Global has deployed
      any of its services at such property, (v) at least fifty percent (50%) of
      the residents of such property possess a personal computer in their
      apartment (which shall be determined by a survey of the property at I(3)S'
      sole cost and expense), and (vi) the property can be physically connected
      to the I(3)S nationwide network. If Global desires for compelling business
      reasons that I(3)S shall provide HSDS at any property not meeting the
      standards in the preceding sentence, the parties agree to negotiate in
      good faith for such provision. I(3)S shall commence HSDS at a Property
      within forty-five (45) days after acceptance thereof, as indicated by its
      addition thereto on Exhibit A. If I(3)S declines to serve any property not
      meeting the aforementioned standards, it shall notify Global of its
      decision in writing.

8.6   Upon ninety (90) days written notice to I(3)S, Global shall have the right
      to assume the customer care and billing obligations of I(3)S hereunder.
      Prior to Global assuming such responsibilities, the parties agree to
      promptly meet and negotiate in good faith to increase Global's revenue
      share to cover the costs relating to such services and an increased rate
      of return.

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Global HSDS Agreement
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8.7   RECORDS. I(3)S hereby grants to Global the right to audit the books and
      records of I(3)S relating to the HSDS provided hereunder upon three (3)
      business days' notice. In the event during such audit Global discovers a
      discrepancy of the funds I(3)S was to pay to Global in an amount equal to
      or greater than five percent (5%) of such funds, I(3)S shall bear the cost
      of such audit, including the fees of the auditor as well as reasonable
      lodging, food and travel expenses for the auditor. This audit shall occur
      during normal business hours at the place where such records are normally
      kept.

                                    ARTICLE 9
                        SPECIFIC HSDS SOFTWARE WARRANTIES

9.1   OWNERSHIP; AUTHORITY. I(3)S represents and warrants that the software
      utilized hereunder (collectively, the "Products") are free and clear of
      all liens and encumbrances, and that it has full power and authority to
      utilize the rights granted to it with respect to such Products without the
      consent of any other person or that such consent has been obtained, and
      that to the knowledge of I(3)S the Products utilized hereunder will not
      infringe or violate any copyright, trade secret, trademark, patent or
      other intellectual property rights of any third party.

9.2   COMPLIANCE WITH APPLICABLE LAWS. Each party represents and warrants that
      the services performed by such party pursuant to this Agreement shall be
      in compliance with all applicable federal and state laws, rules and
      regulations.

                                   ARTICLE 10
                                 INDEMNIFICATION

10.1  INTELLECTUAL PROPERTY RIGHTS INDEMNIFICATION. I(3)S shall defend,
      indemnify and hold harmless Global, its directors, officers, shareholders,
      employees and agents and its successors and assigns, from and against any
      and all claims, demands, actions, liabilities, losses, damages and
      expenses, including, without limitation, settlement costs and reasonable
      attorneys' fees, arising out of or relating to any actual or alleged
      infringement of any third party's trade secrets, trademark, service mark,
      copyright, patent or other intellectual property rights (the "Intellectual
      Property Rights") in connection with the use of said Intellectual Property
      Rights hereunder. I(3)S's obligation pursuant to the immediately preceding
      sentence is subject to the following conditions: (i) Global shall give
      I(3)S prompt written notice of all actions, claims or threats against
      Global of infringement or violation of Intellectual Property Rights; (ii)
      Global shall permit I(3)S to elect to assume complete control of such
      claims at its sole discretion and expense; and (iii) Global shall
      cooperate fully with I(3)S in defending against claims, including making
      known or available to the indemnifying party, upon reimbursement of all
      costs associated with provision or reproduction of, all records and
      document pertaining to claims.

10.2  CROSS INDEMNIFICATION FOR OBLIGATIONS UNDER THIS AGREEMENT. Each party
      hereby agrees to indemnify, defend and hold harmless the other party from
      any and

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Global HSDS Agreement
<PAGE>   12
      all damages, liabilities, costs and expenses, including, without
      limitation, reasonable attorneys' fees and expenses, arising out of, under
      or in connection with the indemnitor party's duties, obligations, actions
      or performance under this Agreement.

                                   ARTICLE 11
                        PROTECTION OF PROPRIETARY RIGHTS

11.1  DEFINITION. During the term of this Agreement, I(3)S and Global will
      provide to each other or will come into possession information relating to
      each other's business which is considered confidential or proprietary (the
      "Confidential Information"). Confidential Information shall include,
      without limitation, the HSDS software and documentation, all of I(3)S's
      and Global's trade secrets and all know-how, design, invention, plan or
      process and information relating to I(3)S's and Global's respective
      business operations, services, products, research and development and all
      other information that is marked "confidential" or "proprietary" prior to
      or upon disclosure, or which, if disclosed orally, is identified by the
      disclosing party as being Confidential Information-in writing within
      thirty (30) days after its initial disclosure.

11.2  RESTRICTIONS. Each party shall use its reasonable best efforts to
      maintain the confidentiality of such Confidential Information and not show
      or otherwise disclose such Confidential Information to any third parties,
      including, but not limited to, independent contractors and consultants,
      without the prior written consent of the disclosing party. Each party
      shall use the Confidential Information solely for purpose of performing
      its obligations under this Agreement. Each party shall indemnify and hold
      harmless the other party from any loss or damage the other party may
      sustain as a result of the wrongful use or disclosure by such party (or
      any employee, agent, licensee, contractor, assignee or delegatee of the
      other party) of its Confidential Information.

11.3  AUTHORIZED DISCLOSURES. Notwithstanding the obligations described in
      Section 9.2 above, neither party shall have any obligation to maintain the
      confidentiality of any Confidential Information which: (i) is or becomes
      publicly available by other than unauthorized disclosure by the receiving
      party; (ii) is independently developed by the receiving party; or (iii) is
      received from a third party who has lawfully obtained such Confidential
      Information without a confidentiality restriction. If required by any
      court of competent jurisdiction or other governmental authority, the
      receiving party may disclose to such authority, data, information or
      material involving or pertaining to Confidential Information to the extent
      required by such order, provided that the receiving party shall first have
      used its best efforts to obtain a protective order reasonably satisfactory
      to the disclosing party sufficient to maintain the confidentiality of such
      data, information or materials.

11.4  LIMITED ACCESS. Each party shall limit the use and access of Confidential
      Information to such party's bonafide employees or agents who have a need
      to know

                                                                              12
Global HSDS Agreement
<PAGE>   13

      such information for purposes of conducting the receiving party's
      business. Each party shall notify all employees and agents who have access
      to Confidential Information or to whom disclosure is made that the
      Confidential Information is the confidential, proprietary property of the
      disclosing party and shall instruct such employees and agents to maintain
      the Confidential Information in confidence.

11.5  CONFIDENTIALITY OF TERMS. Unless approved in advance by the non-disclosing
      party, except for the existence of this Agreement, the terms and
      provisions of this Agreement shall remain strictly confidential and shall
      not be disclosed to any third party other than a party's attorneys,
      accountants and other professional advisers.

11.6  CONTINUING OBLIGATIONS. Each party's obligations under this Article 9
      shall survive the termination of this Agreement for two (2) years
      thereafter.

                                   ARTICLE 12
                              DEFAULT; TERMINATION

12.1  DEFAULT. Upon the occurrence of any of the following events, a party shall
      be deemed to be in default under this Agreement:

       (a) Material breach of any warranty, or misrepresentation by the
       defaulting party;

       (b) Material failure to perform the defaulting party's obligations
       hereunder, including, without limitation, with respect to I(3)S its
       failure to (i) maintain the service standards set forth in Section 7.1
       hereof, and (ii) make the payments to Global set forth in Section 8.1
       hereof.

       (c) The defaulting party's ceasing to conduct business in the normal
       course, insolvency, the making of a general assignment for the benefit of
       its creditors, suffering or permitting the appointment of a receiver or
       similar officer for its business or assets or availing itself of, or
       becoming subject to, any proceeding under the United States Federal
       Bankruptcy Laws or any federal or state statute relating to solvency or
       the protection of the rights of creditors; or

       (d) Making of any warranty, representation, statement or response in
       connection with this Agreement which was untrue in any material respect
       on the date it was made by the defaulting party.

12.2  REMEDIES. In the event the defaulting party fails to cure any default set
      forth hereunder for a period of thirty (30) days after written notice of
      such default by the non-defaulting party, the non-defaulting party may
      terminate this Agreement without further obligation on the part of the
      non-defaulting party, and pursue any claims at law or in equity against
      the defaulting party.

                                                                              13
Global HSDS Agreement
<PAGE>   14

12.3  FAILURE TO EXERCISE REMEDY. The remedies set forth above are cumulative,
      but the non-defaulting party is under no obligation to exercise any such
      remedy. The exercise of, or failure to exercise, any such remedies shall
      not prevent any future exercise of the same or any other remedies or
      release the defaulting party from its obligations under this Agreement.

12.4  EFFECT OF TERMINATION. Termination of this Agreement shall not impair
      either party's then accrued rights, obligations, liabilities or remedies
      hereunder.

                                   ARTICLE 13
                           NOTICE; PUBLIC DISCLOSURES

13.1  NOTICE. Any notice, demand or other communication required or permitted
      by any provision of this Agreement shall be deemed to have been
      sufficiently given or served for all purposes when delivered in person or
      sent by registered or certified mail, return receipt requested, all
      postage and other charges prepaid, to the respective addresses of the
      parties first noted above, or at such other addresses as may be
      designated by notice from such party to the other party pursuant to their
      terms of this section.

13.2  PUBLIC DISCLOSURES. All media releases, public announcements, and public
      disclosures by either party of its employees, agents or representatives
      relating to this Agreement or the subject matter hereof, excluding any
      announcement beyond the control of this disclosing party, will be approved
      by the non-disclosing party in writing prior to release.

                                   ARTICLE 14
                                  MISCELLANEOUS

14.1  ENTIRE AGREEMENT. This Agreement, together with the schedules, attachments
      and exhibits attached hereto or referred to herein, constitutes the entire
      Agreement and understanding among the parties hereto and is the final
      expression of their Agreement and no evidence of oral or other written
      promises shall be binding. All other prior agreements or understandings
      related to the subject hereof among the parties, whether written or oral,
      shall be null and void and of no further force and effect upon the
      execution of this Agreement. This Agreement shall be binding upon and
      inure to the benefit of the parties hereto and their respective successors
      and permitted assigns.

14.2  INCORPORATION BY REFERENCE. The schedules, exhibits and attachments
      referred to herein or attached hereto are hereby incorporated in and to
      this Agreement and made a part hereof by this reference.

14.3  AMENDMENT; MODIFICATION. This Agreement may not be supplemented, amended,
      modified or otherwise altered except by written instrument executed by all
      the

                                                                              14
Global HSDS Agreement
<PAGE>   15

      parties hereto and no course of dealing or trade usage among or between
      the parties shall be effective to supplement, amend, modify or alter this
      Agreement.

14.4  WAIVER. The failure to enforce or to require the performance at any time
      of any of the provisions of this Agreement herein shall in no way be
      construed to be a waiver of such provisions, and shall not affect either
      the validity of this Agreement, any part hereof or the right of any party
      thereafter to enforce each and every provision in accordance with the
      terms of this Agreement.

14.5  GOVERNING LAW. This Agreement shall be governed by and construed in
      accordance with the laws of the State of Texas, without regard to its
      conflicts or choice of laws.

14.6  SEVERABILITY. If any severable provision of this Agreement is deemed
      invalid or unenforceable by any judgment of a court of competent
      jurisdiction, the remainder of this Agreement shall not be affected by
      such judgment, and this Agreement shall be carried out as nearly as
      possible according to its original terms and intent, unless to do so would
      substantially impair the underlying purposes of this Agreement.

14.7  CAPTIONS. The captions appearing in this Agreement are included solely for
      convenience of reference and shall not be construed or interpreted to
      affect the meaning or interpretation of this Agreement.

14.8  FORCE MAJEURE. Neither party shall be responsible for any failure to
      comply with or for any delay in performance of the terms of this
      Agreement, including, but not limited to, delays in delivery, where such
      failure or delay is directly or indirectly caused by or results from
      events of force majeure beyond the control of either party. These events
      shall include, but not be limited to, fire, flood, earthquake, accident,
      civil disturbance, war, acts of God, or acts or government.

14.9  HIRING PROHIBITED. During the term of this Agreement and for a period of
      one (1) year thereafter, neither party shall solicit for hire or hire any
      employee of the other party who has performed services under this
      Agreement, but this prohibition shall not apply to any employee who
      independently responds to an advertisement placed by the hiring party.

14.10 PERFORMANCE REVIEW. In the event of any dispute or controversy between the
      parties of any kind or nature, upon the written request of either party,
      each of the parties will appoint a designated officer whose task it will
      be to meet for the purpose of resolving such dispute or controversy or to
      negotiate for an adjustment to any provision of this Agreement needed to
      resolve such dispute or controversy. Such officers will discuss the
      dispute or controversy and negotiate in good faith in an effort to resolve
      the dispute or controversy or renegotiate the applicable section or
      provision of this Agreement without the necessity of any formal proceeding
      relating thereto. No formal proceedings for the judicial or arbitrational
      resolution

                                                                              15
Global HSDS Agreement
<PAGE>   16

      of such dispute or controversy may be commenced until either or both of
      the designated officers conclude in good faith that an amicable resolution
      through continued negotiation of the matter at issue is not likely to
      occur.

14.11 ARBITRATION. Except where otherwise expressly provided, the parties hereby
      agree to submit to arbitration any and all disputes, controversies,
      differences, or claims which may arise between them in relation to or out
      of this Agreement, or the breach thereof, if the parties fail to reach an
      amicable settlement or earlier resolution by mutual agreement. Any
      controversy or claim relating to this Agreement shall be submitted to
      final and binding arbitration pursuant to the Rules of the American
      Arbitration Association then in effect, by three arbitrators knowledgeable
      of said rules and as to industry standards, sitting in a location in
      Dallas County, State of Texas, designated by the filing party. Each party
      will appoint one arbitrator within ten (10) days of the filing of the
      arbitration claim and the two arbitrators shall appoint a third arbitrator
      within thirty (30) days. None of the arbitrators shall be related to or
      have any direct or indirect interest in I3S or Global. The arbitrators
      will be instructed to consider, in making any determination, the customary
      practices in the industry to the extent such practices exist. The
      arbitration proceeding shall commence within thirty (30) days of the
      selection of the arbitrators. Discovery shall be limited so as to allow
      the taking of a maximum of five (5) depositions by each party. The
      arbitrators shall be authorized to provide for interim and final
      injunctive relief. The parties acknowledge and agree that such
      arbitration shall be the sole forum for such interim and final injunctive
      relief and the parties agree to accept and abide by such injunctive
      relief. The arbitrators shall have the right but not the obligation to
      award to the prevailing party the cost of resolving any dispute regarding
      this Agreement or the formation, breach, enforcement or performance
      hereof, including any reasonable fees of attorneys, accountants and expert
      witnesses incurred by the prevailing party. Punitive damages shall not be
      recoverable in any arbitration initiated pursuant to this Agreement.
      Judgment upon the award rendered by the arbitrators may be entered in any
      court having jurisdiction thereof. Notwithstanding anything to the
      contrary contained herein, if, at any time an initiating party can show
      that it would suffer irreparable harm by following the above procedures
      solely because of the time that it would take to engage the arbitrators
      and the non-filing party will not agree to immediately appoint the
      arbitrators and that money damages would not be adequate to compensate it
      for the harm so suffered, the initiating party may apply to any court of
      competent jurisdiction for an order or judgment granting that party a
      provisional remedy, including, but not limited to, a temporary restraining
      order, a preliminary injunction or an attachment.

14.12 BINDING NATURE; ASSIGNABILITY. This Agreement will be binding on the
      parties hereto, and their respective successors and assigns. Upon prior
      written notice to the other party, either party may assign its rights and
      delegate its duties under this Agreement; provided however, that the
      assignee party must unconditionally

                                                                              16
Global HSDS Agreement
<PAGE>   17
      assume in writing, and agree to be bound by, the right, duties and
      obligations of the assignor party under this Agreement.

14.13 RELATIONSHIP OF THE PARTIES. Notwithstanding anything to the contrary in
      this Agreement, under no circumstances will either party be deemed to be
      in any relationship with the other party carrying with it fiduciary or
      trust responsibilities. The parties do not intend for this Agreement or
      the relationship established thereby to be considered the formation of a
      joint venture or partnership between the parties for any purpose. I(3)S
      has the sole right to supervise, manage, contract, direct, procure,
      perform or cause to be performed the day-to-day work to be performed by
      I(3)S under this Agreement unless otherwise expressly provided herein or
      agreed to by the parties in writing.

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

I(3)S, INC.                                       GLOBAL INTERACTIVE
                                                  COMMUNICATIONS CORP.

By: /s/ MATTHEW HUTCHINS                          By:    /s/ KEVIN SCHOTTLAENDER
     --------------------------                         ------------------------
     Matthew Hutchins                                    Kevin Schottlaender
     President                                           President

Date:     3/16/99                                 Date:      3/12/99
     -------------------------                          ------------------------

                                                                              17
Global HSDS Agreement
<PAGE>   18

                                LIST OF EXHIBITS

EXHIBIT A:     Sample Property Rider

EXHIBIT B:     Description of High Speed Data Services Provided by 13S

EXHIBIT C:     Service Level

                                       1

<PAGE>   19
                                    EXHIBIT A

                           FORM OF MDU PROPERTY RIDER

1.  MDU Property Owner/Agent Name:
                                   ---------------------------------------------

2.  Term of Property Agreement:
                                ------------------------------------------------

3.  Location of MDU Property:
                              --------------------------------------------------

4.  Contact Person/Leasing Agent:
                                  ----------------------------------------------

5.  Number of Units:
                     -----------------------------------------------------------

6.  Number of Buildings:
                         -------------------------------------------------------

7.  Current Occupancy:
                       ---------------------------------------------------------

8.  Existing Property (including age) or New Build:
                                                    ----------------------------

9.  PC Ownership Survey

10. Acknowledgement by Owner of Right of HSDS Access to Property

11. CATV/MATV Site Survey Information

12. Coaxial Cable   DSL   Fiber Optic

Global Interactive Communications              I3S, Inc.
Corp.

-----------------------------------    ------------------------------------
Print Name:                            Print Name:
           ------------------------               -------------------------
Title:                                 Title:
      -----------------------------          ------------------------------

                                       2

<PAGE>   20

                                    EXHIBIT B

         B-1 DESCRIPTION OF HIGH SPEED DATA SERVICES PROVIDED BY I3S AND
                   RESPECTIVE RESPONSIBILITIES OF THE PARTIES

1.1 The I3S HSDS is a data network service that provide transport and peering
functions of Internet Protocol (IP) data traffic, including, without limitation:

     A.   Broadband access networks on MDU properties composed of one or more
broadband access technologies including but not limited to coaxial or hybrid
fiber coaxial (HFC) cable television distribution systems, twisted-pair
copper-wire-based telephone distribution systems, twisted-pair copper-wire-based
local area network distribution systems and fiber-optic-based local area network
distribution systems;

     B.   Local loop networks that connects the broadband access networks on
each MDU property to the I3S regional points-of-presence (POPs) in each
metropolitan area served by I3S;

     C.   Regional point-of-presence networks that connects the POPs to the
i3s.net national IP backbone;

     D.   A national IP backbone consisting of broadband communication
facilities for the transport of data among I3S POPs and public and private
Exchange Points where data and Internet routing information will be exchanged
with other networks peered with i3s.net as part of the global Internet;

     E.   A national Network Operations Center (NOC).

     F.   Certain computer services that include:

          (i)    Membership system for user authentication and authorities;

          (ii)   Personalization services for customizing content to user
preferences;

          (iii)  Internet mail (SMTP and POP3);

          (iv)   Internet newsgroups (NNTP) composed of approximately 25,000 or
more newsgroups;

          (v)    Internet World Wide Web (HTTP) services;

          (vi)   Internet chat (IRC and MIRC);

          (vii)  Conferencing and collaboration bridges;

          (viii) Streaming multimedia services such as Microsoft's NetShow and

Progressive Network's RealMedia;

          (ix)   A branded suite of client software that include:

                 (a)  Web browser;

                 (b)  Mail reader;

                 (c)  News reader;

                 (d)  Chat client;

                                        3

<PAGE>   21

               (e)  Conferencing and collaboration client;

               (f)  Appropriate plug-ins and ActiveX controls.

          (x)  Certain customer service functions that include:

               (a)  A National Customer Care Center;

               (b)  A telephone and network-based customer help desk;

               (c)  A Trouble Reporting facility;

               (d)  A customer billing system.

          G. Except as set forth in Section 6.1, certain multimedia-rich content
that showcases the capabilities of HSDS that includes:

          (i)  Original content created by I3S;

          (ii) Aggregated content created by others but licensed by I3S and
improved for uses in a HSDS system;

          (iii) Aggregated content created by others but licensed by I3S and
used unimproved.

                                        4

<PAGE>   22
              B-2 REQUIREMENTS RELATED TO BROADBAND ACCESS NETWORKS
                      UTILIZING MULTIPLE BROADBAND ACCESS
                               TECHNOLOGIES (mBAT)

A.   GLOBAL's RESPONSIBILITIES

          (i) Provide, or cause to be provided, suitable physical-layer
coaxial-cable, twisted-pair copper-wire, or fiber-optic distribution plant on
each GLOBAL property that will meet or exceed I3S specifications;

          (ii) Provide, or cause to be provided, a right of use for the
GLOBAL-provided distribution plant; and

          (iii) Provide, or cause to be provided, proper space, security
and power for data communication equipment necessary to provide I3S's HSDS.

B.   I3S RESPONSIBILITIES:

          (i) Provide technical specifications for suitable physical-layer
distribution plants for I3S's HSDS;

          (ii) Inspect and accept or reject physical-layer distribution plants
proposed by GLOBAL as suitable for I3S's HSDS;

          (iii) Maintain, or cause to be maintained, physical layer distribution
plants built and owned by GLOBAL that are used for I3S's HSDS;

          (iv) Install, maintain and operate data delivery equipment for each
property offering HSDS. Installation and maintenance will meet or exceed
manufacturer's specifications and the requirements set forth in the Agreement.
Through itself or its agents, GLOBAL will assist I3S with pre-installation
engineering planning and site survey questionnaires;

          (v)  Integrate all data delivery equipment for each property into the
I3S Element Management System portion of its Network Management Platform using
SNMP and/or RMON. I3S will monitor all data delivery equipment twenty-four hours
per day, seven day per week (24x7);

          (vi) Assume the cost of the acquisition of all data communication
equipment necessary to provide HSDS, including the RF modulator and demodulator,
and to provide termination and delivery of HSDS between the Subscriber and the
I3S POP in each Market;

          (vii) Without limitation on the foregoing or the attached SLA, both
parties acknowledge that the end to end performance of HSDS is probabilistic and
subject to anomalous short lived usage patterns by Subscribers which will affect
both the utilization of the local loop circuits and the I3s.net national
backbone from time to time;

          (viii) Configure and operate all data delivery equipment to
efficiently integrate with the rest of the I3s.net network;

          (ix) Subscribers will not be required by I3S to install or
operate a custom web browser; and

          (x) Subject to all applicable laws and regulations, Subscribers will
have voluntary access to all public Internet sites and services.

                                        5
<PAGE>   23

        B-3 ADDITIONAL REQUIREMENTS RELATED TO BROADBAND ACCESS NETWORKS
                 UTILIZING CABLE TELEVISION DISTRIBUTION SYSTEMS

     A.   GLOBAL's Responsibilities (These responsibilities apply only to the
extent HSDS is to be provided by I3S by means of an interconnection to a third
party's CATV distribution plant on an applicable property. GLOBAL shall use
commercially reasonable efforts to perform these responsibilities.):

          (i)  Cause CATV infrastructure to comply with FCC requirements;

          (ii) Upgrade, or cause to be upgraded, property CATV infrastructure to
provide bi-directional cable delivery to all subscribers;

          (iii) Cause the upgraded bi-directional CATV infrastructure to exceed
the minimal operational requirements of the I3S cable modem system, which are:

<TABLE>
<CAPTION>

--------------------------------------------------------- --------------------------------------------
           MINIMUM CABLE TELEVISION NETWORK                                  VALUE
             REQUIREMENTS FOR i3s.net HSDS
<S>                                                       <C>
--------------------------------------------------------- --------------------------------------------
Amplitude variations inband
     Forward channel                                           5 dB total
     Return channel                                            5 dB total
--------------------------------------------------------- --------------------------------------------
--------------------------------------------------------- --------------------------------------------
Group delay variation inband
     Forward channel                                           60 nsec/MHz, 240 nsec total
     Return channel                                            200 nsec/MHz, 800 nsec total
--------------------------------------------------------- --------------------------------------------
--------------------------------------------------------- --------------------------------------------
Maximum tap to tap variation                                   27 dB
--------------------------------------------------------- --------------------------------------------
--------------------------------------------------------- --------------------------------------------
Dynamic range on receiver                                      -15 dBmV to +15 dBmV
--------------------------------------------------------- --------------------------------------------
--------------------------------------------------------- --------------------------------------------
Maximum return/upstream loss                                   49 dB
--------------------------------------------------------- --------------------------------------------
--------------------------------------------------------- --------------------------------------------
Minimum carrier to noise                                       22 dB
--------------------------------------------------------- --------------------------------------------
--------------------------------------------------------- --------------------------------------------
Minimum carrier to interference                                25 dB
--------------------------------------------------------- --------------------------------------------
</TABLE>

          (iv) Provide, or cause to be provided, two (2) six MHz video
channels within the CATV infrastructure bandwidth on Internet served properties;
one (1) in the spectrum from 54 MHz to 750 MHz and one (1) in the 5MHz to 50 MHz
spectrum; and reserve another two (2) additional video channels, in the same
spectrums for future expansion as Subscriber penetration on the property
increases; and

          (v)  Designate, or cause to be designated, an engineering point of
contact for each cable company operating the cable television distribution
system for I3S Network Operations Center (NOC) to report problems or failures
related to the cable television distribution system twenty-four hours per day,
seven days per week (24x7).

                                       7
<PAGE>   24

B. I3S Responsibilities:

          (i)  Use the cable modem system, and certain network management
features that it provides, to monitor the availability and quality of GLOBAL's
property network (its CATV plant) and the Equipment;

          (ii) Report to GLOBAL's designated engineering point of contact any
problems observed by the I3S NOC in the course of operating the cable modem
system network management features; and

          (iii) Report to GLOBAL's designated engineering point of contact any
problems determined by Subscriber contact in the course of operating the
Subscriber Help Desk.

                                        8

<PAGE>   25

                         B-4 LOCAL LOOP CHARACTERISTICS

           A.   Global's Responsibilities: Provide, or cause to be provided,
      proper space, security and power for Local Loop termination and
      transmission equipment necessary to provide Internet delivery and other
      data services on the property.

           B.   I3S Responsibilities:

          (i)   Install, maintain and operate local loop termination and
      transmission equipment necessary for each property offering HSDS.
      Installation and maintenance will meet or exceed manufacturer's
      specifications and the requirements set forth in the Agreement. Through
      itself or its agents, GLOBAL will assist I(3)S with pre-installation
      engineering planning and site survey questionnaires;

          (ii)  Integrate all local loop termination and transmission
      equipment for each property into the I3S Element Management System portion
      of its Network Management Platform using SNMP and/or RMON. I3S will
      monitor all local loop termination and transmission equipment twenty-four
      hours per day, seven day per week (24x7);

          (iii) Assume the cost of the acquisition of all local loop
      termination and transmission equipment necessary to provide HSDS and to
      provide termination and delivery of HSDS between the Property and the I3S
      POP in each Market;

          (iv)  Order, provision, install and maintain local loop communications
      links between each property and I3S POP in each Market with a bandwidth of
      not less than 1.544 mb/s (T1). In addition, as the number of Subscribers
      on each property increases, scale the local loop bandwidth so that each
      simultaneously active user averages approximately 1 mb/s ninety eight
      percent (98%) of the time;

          (v)   Without limitation on the foregoing or the attached SLA, both
      parties acknowledge that the end to end performance of HSDS is
      probabilistic and subject to anomalous short lived usage patterns by
      Subscribers which will affect both the utilization of the local loop
      circuits and the I3s.net national backbone from time to time; and

          (vi)  Configure and operate all local loop termination and
      transmission equipment to efficiently integrate with the rest of the
      I3s.net network.

                                        9

<PAGE>   26

          B-5 POINT OF PRESENCE FEATURES AND ESTABLISHMENT REQUIREMENTS

           A.   I3S Responsibilities:

          (i)   Acquire, install and maintain data communication equipment at
      each POP for the termination and transmission of HSDS from properties to
      the i3s.net national network backbone;

          (ii)  I3S will determine the location of its main presence in each
      Market to be consistent with its own operational practices (which
      currently include co-locating within its carrier's central offices in each
      Market);

          (iii) Acquire, install, maintain and operate Internet peering
      relationships at public and private Internet Exchange Points (EP) with
      other Tier 1 Internet backbone networks throughout the United States;

          (iv)  Acquire, install, maintain and operate computers and software to
      provide Network Management and provide Internet services for Subscribers.
      To provide these functions, I3S will employ a combination of locally-
      distributed-to-the-POP servers as well as globally centralized servers
      consistent with its overall network design and operational practices; and

          (v)   Order, provision, install, maintain and operate data transport/
      carriage pathways from each POP, EP and/or NOC with a bandwidth not less
      than 45 mb/s (DS-3) interconnection. In addition, as the number of
      Subscribers on Market increases, scale the bandwidth so that each
      simultaneously active user averages approximately 1 mb/s ninety eight
      percent (98%) of the time.

                                       10

<PAGE>   27

                         B-6 I3S INFORMATION OPERATIONS
            CONTENT PRODUCTION; GLOBAL/BROADBAND NOW!(TM) LAUNCH PAGE

     A. I3S operates, and shall operate for the term of this Agreement, an
information content operation for creating original content or aggregating
content created by others and licensed to I3S for inclusion in the I3S body of
content. This material will consist of but not limited to informational,
educational, recreational, entertainment and business content. This body of
content will be offered to subscribers of the HSDS product. Provision of content
shall be in accordance with the terms of the Agreement.

     B. Without limitation on paragraph A above, I3S will create content as
creative and/or business opportunities present themselves. The I3S content will
be updated as I3S, using its editorial judgment, sees fit, but in no event less
frequently than good industry practice.

     C. Certain portions of this content will be offered to all HSDS Subscribers
free of charge (Basic Content). Other portions of the content may be offered to
HSDS Subscribers on an optional fee basis for unlimited access to a fixed
package of content (Premium Content). Another certain portion of the content
may be offered to HSDS Subscribers on an optional fee basis for access to a
specific time-limited event (Pay-Per View Content).

     D. In addition to the fees charged customers for content, I3S may solicit
and sell advertising and other revenue-producing transaction opportunities that
will appear on certain portions of the content.

     E. All fees for premium content, pay-per-view content, advertising and
revenue-producing transactions shall be determined solely by I3S, subject to the
provisions of Section 8.2.

     F. The potential revenue set forth here for content shall not be subject to
other provisions in the Agreement (including attachments) regarding revenue
sharing, fees and pricing.

     G. I3S, or its content partners, will design, produce and update, as
necessary, all content and be responsible for all such costs.

     H. I3S shall initially design, produce and update, as necessary, a
customized launch page (the "Launch Page") for HSDS Subscribers, which can be
used to market and promote the HSDS, and, on I3S's standard time and materials
rates (or as otherwise agreed by the parties), GLOBAL's other services. In
addition, the Launch Page will include hyperlinks to GLOBAL's corporate web
sites as directed by GLOBAL. The Launch Page shall meet the technical,
functional and appearance requirements specified by I3S. I3S shall from time to
time update the Launch Page throughout the Term in accordance with the terms of
this Agreement. I3S may offer HSDS Subscribers Launch Pages that are
personalized (by property) and that, in addition to the features described
above, may promote the I3S content offerings and provide direct hyperlinks to
the I3S content.

     I. In no event, at any time during the term of this Agreement, shall I3S
knowingly permit or use any (i) content in the GLOBAL/Broadband NOW!(TM) website
or within its information content operations which contains obscene material,
sexually

                                       11
<PAGE>   28

explicit adult programming, or indecent material as defined in Section 47 C.F.R.
76.701(g), (ii) material in the GLOBAL/Broadband NOW!(TM) website soliciting or
promoting unlawful conduct, or any (iii) programming in the GLOBAL/Broadband
NOW!(TM) website that may or could have been subject to the Telecommunications
Act of 1996, Section 641, relating to the scrambling of sexually-explicit adult
video service programming.

                                       12
<PAGE>   29

                        B-7 CUSTOMER CARE CENTER FEATURES

A.   I3S Responsibilities

     (i)  Provide a toll free number for:

          (a)  Inquiries about the HSDS supplied by I3S

          (b)  Ordering and scheduling installation of HSDS products

          (c)  Billing inquiries

          (d)  Initial technical support inquires

          (e)  Technical support for all HSDS issues

          (f)  Technical support for Subscriber CPE issues related to HSDS

     (ii) Answer toll free line consistent with the GLOBAL/I3S service co-brand.

     (iii) Operate 24x7 customer care call center operation.

     (iv) Maintain sufficient customer service staff and call center
capacity to connect to Subscribers within 1 minutes of call entering processing
operation.

     (v) Develop and publish escalation procedure for Customer Service
Representatives related to network issues.

     (vi) Resolve billing issues within 24 hours 95% of time, on a monthly
basis.

     (vii) Resolve property network issues within 24 hours 95% of time, on
a monthly basis.

     (viii) Resolve technical issues within 24 hours if a phone call is required
95% of time, on a monthly basis.

     (ix) Resolve technical issues within 48 hours if a truck roll is required
95% of time, on a monthly basis.

     (x)  Develop and publish escalation procedures for GLOBAL to contact
regarding technical issues related to the network.

                                       13

<PAGE>   30

     B-8 SUBSCRIBERS' HARDWARE AND SOFTWARE INSTALLATION SPECIFICATIONS AND
                            INSTALLATION REQUIREMENTS

A.   I3S shall:

     (i) Verify that potential Subscribers' personal computers meet the
I3S-established minimum requirements for the supplied software and the HSDS
service;

     (ii) Make an appointment with each new Subscriber to meet the installation
personnel for the installation of the HSDS in the Subscriber's unit;

     (iii) Collect the Subscriber information required to install, provision and
complete the set up of Subscribers' HSDS service. I3S will develop an
appropriate paper-form-based system or automated system to facilitate this
process;

     (iv) Provide, or cause to be provided, coaxial connection to the
Subscriber's specified location;

     (v) Verify, or cause to be verified, that the coaxial connection completed
to the Subscriber's specified location exceeds the minimum operational
requirements for the I3S-supplied CPE and the I3S HSDS service;

     (vi) Verify, or cause to be verified, and if necessary, promptly (but not
more than a reasonable time frame set by GLOBAL) perform repairs such that all
access network services function properly (and to not less than the standards
pre-existing I3S HSDS operations) after I3S completes installation and
throughout the provision of HSDS;

     (vii) Maintain a sufficient inventory of CPE for each Market and develop
procedures to restock CPE as used in Subscriber installations;

     (viii) Issue and install the required CPE for the service requested by
the Subscriber;

     (ix) Meet the Subscriber at the Subscribers location at the scheduled time
within the tolerances and limits as defined in the I3S Service Level Agreement;

     (x) Install the required cable modems(s) and have HSDS operational in the
Subscriber's unit within the number of days of a Subscriber's request set forth
in Section 6.4 of the Agreement;

     (xi) Install any required network interface cards (NICs), TCP/IP protocols
and Internet software suite in the Subscriber's personal computer;

     (x) Offer the Subscriber a brief introduction to the HSDS to be performed
at the time of installation. This introduction will include how to launch the
service, how to find the training material on the i3s.net Web site, how to find
the Subscriber Support Section on the i3s.net Web site and how to call for
technical assistance or support;

     (xi) Obtain signatures required to verify that each Subscriber installation
was executed properly and to the satisfaction of the Subscriber; and

     (xii) Provide GLOBAL with a copy of the installation transaction
documentation verifying that the completed installation is ready for billing.
This documentation will include the CPE delivery receipt, the ISP contract and
the completed work order.

                                    14

<PAGE>   31

             B-9  HSDS INITIAL SUBSCRIBER RATES, SERVICE LEVELS AND
                      INSTALLATION AND EQUIPMENT CHARGES

     A. The following table outlines the various levels of service available to
Personal Service subscribers:
<TABLE>
<CAPTION>

                                                                                    % of TIME SUBSCRIBER IS
                                                                     UPSTREAM        GUARANTEED DOWNSTREAM
                         PRICE PER          DOWNSTREAM            TRANSMISSION                 AND
PERSONAL SERVICE LEVEL     MONTH         TRANSMISSION SPEED           Speed              UPSTREAM SPEEDS
-----------------------------------------------------------------------------------------------------------------

<S>                         <C>               <C>                     <C>                       <C>
BBNow!(TM) Lite            $29.95             64 Kbps                 64 Kbps                   98%

BBNow!(TM) Standard        $49.95             1.0 Mbps               1.0 Mbps                   98%

BBNow!(TM) Max             $79.95             1.5 Mbps               1.5 Mbps                   98%

</TABLE>

     B. The following table outlines the various levels of service available to
Home Office Service subscribers:

<TABLE>
<CAPTION>

                                                 MINIMUM         MINIMUM
                                               DOWNSTREAM       UPSTREAM
                              PRICE PER       TRANSMISSION    TRANSMISSION
HOME OFFICE SERVICE LEVEL       Month             SPEED           SPEED
------------------------------------------------------------------------------------------------------
<S>                 <C>          <C>            <C>             <C>
Home Office--Level 1             $199           1.5 Mbps        128 Kbps

Home Office--Level 2             $299           1.5 Mbps        512 Kbps

Home Office--Level 3             $499           1.5 Mbps        1.0 Mbps

Home Office--Level 4             $699           1.5 Mbps        1.5 Mbps
------------------------------------------------------------------------------------------------------
</TABLE>

Vanity DNS hosting                                            $100.00 per month

Installation fee                                            $49.95 non-recurring

Network interface card (NIC)                    market price (not to exceed $60)

CPE (cable modem, xDSL modem or other
broadband access device) purchase                                market price

Monthly rental of CPE                                            market price*

*The decision to purchase or rent the CPE necessary for the provision of HSDS
shall be at the sole discretion of each resident subscribing to HSDS.

                                       15

<PAGE>   32

<PAGE>   33

                                    EXHIBIT C
                                 SERVICE LEVELS

A.   Definitions

     1. A "Trouble" or "Trouble Report" shall relate to i3s.net or 13S provided
services (or resold services) and the Equipment and I3S-maintained facilities,
but shall exclude customer error, defects in customer equipment ("CPE"), defects
in customers' computers, defects in property cable or wiring plants, defects in
fiber optic distribution systems, defects in cable television distribution
systems and network problems experienced by destination networks at or beyond
Internet Exchange Points.

     2. Except as otherwise set forth herein, performance levels shall be
calculated by dividing the total Customer Service Orders begun on or before the
date and clock hour promised to the customer that the service order would be
started by the total number of service orders initiated in each calendar month
and multiplying by 100.

3.   Performance Requirements

     1. Percent Customer Service Order Beginning Commitment Dates Timely Met:
I3S shall exhibit greater than 90% Customer Service Order Beginning Commitment
Dates Timely Met per month.

     2. Percent Customer Service Order Completion Commitment Dates Timely Met:
I3S shall exhibit greater than 90% Customer Service Order Completion Commitment
Dates Timely Met per month.

     3. Percent of Network Availability

          a. This parameter is calculated by dividing the number of seconds that
the network is available for each customer by the total number of
customer-seconds in each calendar month and multiplying by 100.

          b. Specifically excluded from the Network Availability
calculation shall be regularly scheduled maintenance windows or ad hoc
maintenance windows scheduled and announced 24 hours in advance in the i3s.net
Customer Support Web Site.

          c. Specifically excluded from the Network Availability calculation
shall be periods of time where the access distribution plant (operated by GLOBAL
or its designated third party operator) exceed the operational standards set by
I3S for each type of broadband access technology.

          d. I3S shall exhibit greater than 98% Network Availability per month.

                                       16

<PAGE>   34

     4. Percent Customer Calls Answered within 45 Seconds by I3S Personnel

          a. At a minimum, the I3S National Customer Care Center shall operate
from 8:00 a.m. to 5:00 p.m. Central Time, Monday through Friday exclusive of
holidays.

          b. This parameter is calculated by dividing the number of calls
answered with 45 seconds by the total number of Customer Care Center calls
answered in each calendar month and multiplying by 100.

          c. I3S shall exhibit greater than 90% of Customer Calls Answered
within 45 Seconds per month.

     5. Percent of Trouble Reports Resolved Timely

          a. This parameter is related to the number of Trouble Reports resolved
within the following windows:

                    (i) For Trouble Reports received by I3S at the I3S National
Customer Care Center prior to 2:00 p.m. Central Time, Monday through Friday,
excepting holidays, will be cleared by the end of the next business day.

                    (ii) For Trouble Reports received by I3S at the I3S National
Customer Care Center after 2:00 p.m. Central Time, Monday through Friday,
excepting holidays, will be cleared by noon of the second business day
thereafter.

                    (iii) This parameter is calculated by dividing the total
trouble reports cleared on or before the date and clock hour promised to the
customer the total number of Trouble Tickets cleared in each calendar month and
multiplying by 100.

                    (iv) I3S shall exhibit greater than 90% Trouble Reports
Cleared Timely per month, according to the terms of this section for trouble
that can be resolved by I3S alone.

     6. Percent Customer Repair Visit Appointments Met

          (a) This parameter is related to the customer commitments made by the
I3S National Customer Care Center for repairs that require a repair visit to
customers' sites or premises.

          (b) This parameter is calculated by dividing the total Customer Repair
Visits Appointments met on or before the date and clock hour promised to the
customer by the total number of Customer Repair Visit Appointments initiated in
each calendar month and multiplying by 100.

                                       17
<PAGE>   35

          (c) I3S shall exhibit greater than 90% Customer Repair Commitment Met
per month.

          (d) I3S shall complete installations of HSDS in any unit within five
(5) business days of taking an order, subject to the consent of the customer
and/or property manager.

     7. Percent of Customer Bills Prepared Timely

          (a) This parameter is related to the generation of Customer Bills for
delivery to customers by mail, electronic mail or credit card billing.

          (b) This parameter is calculated by dividing the number of Customer
Bills generated and sent to customers within twenty (20) business days of the
end of the billing cycle by the total number Customer Bills generated in each
calendar month and multiplying by 100.

          (c) I3S shall exhibit greater than 95% Customer Bills Prepared Timely
per month.

     8. Percent of Customer Bills Prepared Accurately

          (a) This parameter is related to the accuracy of Customer Bills for
delivery to customers by mail, electronic mail or credit card billing.

          (b) This parameter is calculated by dividing the number of
Customer Bills generated that do not require an adjustment due to a billing
error caused I3S by the total number Customer Bills generated in each calendar
month and multiplying by 100.

          (c) I3S shall exhibit greater than 95% Customer Bills Prepared
Accurately per month.

     9. Reports: I3S shall provide to GLOBAL reports within twenty (20) business
days of the end of each calendar month, the reports listed below in this
section, each of which may be provided separately or provided on a consolidated
basis:

          (a) A report depicting total subscribers, gross new customers and
gross customers terminated separated by product tier and property.

          (b) New service orders, Trouble Reports opened and closed or cleared
as appropriate separated by date and property.

          (c) Aggregate I3S National Customer Care Center data depicting the
distribution of call waiting time in general and the percent calls answered and
calls abandoned respectively.

                                       18

<PAGE>   36

          (d) Billing summaries describing the date(s) bills were sent to
customers, and the billed revenue disaggregating major categories of service.

                                       19<PAGE>   1
                                                                   EXHIBIT 10.15

                        CONFIDENTIAL TREATMENT REQUESTED

                         MASTER HIGH SPEED DATA SERVICES
                                    AGREEMENT

This MASTER HIGH SPEED DATA SERVICES AGREEMENT (this "Agreement") is entered
into as of the 12 day of November 1998 ("Effective Date"), by and between I(3)S,
INC., a Texas corporation, with an address at 1330 River Bend, Suite 600,
Dallas, Texas 75247-4953 ("I(3)S"); and GTE MEDIA VENTURES INCORPORATED, a
Delaware corporation, with an address at 100 East Royal Lane, HQJ02C05, Irving,
Texas 75039 ("GTE").

                                    RECITALS

WHEREAS, GTE currently provides wireless and wireline, cable television
programming and other services to multiple dwelling units ("MDUs") and their
residents in several metropolitan markets throughout the United States;

WHEREAS, I(3)S provides broadband network services, including, without
limitation, high speed data services, as more specifically described in Exhibit
D attached hereto and incorporated herein by reference ("HSDS"), to multiple
system franchise cable operators ("MSOs"), private cable operators ("PCOs"),
apartment owners, and real estate investment trusts ("REITs"), nationwide; and

WHEREAS, GTE desires to enter into an agreement with I(3)S to provide HSDS to
MDUs selected by GTE in its business judgment, in accordance with the terms of
this Agreement (collectively, the "Properties" and individually, a "Property").

NOW, THEREFORE, the parties hereto hereby covenant and agree as follows:

                                    ARTICLE 1
                         REPRESENTATIONS AND WARRANTIES

1.1    REPRESENTATIONS AND WARRANTIES OF GTE. In order to induce I(3)S to enter
       into this Agreement, GTE represents and warrants (which representations
       and warranties shall survive the delivery of this Agreement) as follows:

         (a) ORGANIZATION AND QUALIFICATION. GTE is a corporation duly organized
             and validly existing and in good standing under the laws of the
             State of Delaware; has all requisite power and authority to own its
             property and assets and to carry on its business as, and in the
             places where, such property and assets are owned or such business
             is now conducted; and is duly qualified to do business and is in
             good standing in every other jurisdiction in which such
             qualification is necessary or desirable.

         (b) NO DEFAULTS. GTE is not in default under any instrument or
             agreement existing as of the date hereof by which GTE is bound that
             may adversely

                                                                               1
GTE HSDS Agreement
<PAGE>   2

             affect its ability to perform its obligations under this Agreement;
             and no default hereunder has occurred and is continuing.

         (c) TITLE. GTE has good, valid and indefeasible title to its property
             that pertains in any way to the provision of HSDS on the
             Properties, and all such property is free and clear of all adverse
             claims, interests and liens, except as has been heretofore
             disclosed in writing to I(3)S.

         (d) ENFORCEABLE OBLIGATIONS; AUTHORIZATION. This Agreement is a legal,
             valid and binding obligation of GTE, enforceable in accordance with
             its terms; the making and performance by GTE of this Agreement have
             been duly authorized by all necessary action; are within the power
             and authority of GTE; will not contravene or violate any legal
             requirement or charter of GTE; and will not result in the breach
             of, or constitute a default under, any agreement, instrument,
             judgement, license, order, franchise or permit to which GTE is a
             party, or any of its property may be bound or affected.

         (e) PERMITS, LICENSES, ETC. GTE possesses all material permits,
             licenses, franchise rights, trademarks, trademark rights, trade
             names, trade name rights and copyrights which are required to
             conduct its business.

         (f) MDU PROPERTY AND OPERATING AGREEMENTS. All MDU property or
             operating agreements to which GTE is a party that pertain to the
             Properties are in full force and effect, and no default has
             occurred with regard to any such MDU property or operating
             agreement that would adversely affect the provision of HSDS at any
             of the Properties.

         (g) INSURANCE. GTE carries insurance with reputable insurers covering
             GTE's property pertaining to HSDS and to the business conducted
             thereby, in such amounts and against such risks as are necessary
             for the provision of services to the Properties.

         (h) RIGHT OF ACCESS. GTE possesses the right under contract or will
             obtain the contractual rights to allow an adequate contractual
             access or entry for the provision of HSDS to all Properties where
             HSDS is to be provided during the term of this Agreement in favor
             of I(3)S.

         (i) SURVIVAL OF REPRESENTATIONS AND WARRANTIES. All representations and
             warranties made by or on behalf of GTE shall survive the execution
             and delivery of this Agreement, and any investigation at any time
             made by or on behalf of I(3)S shall not diminish its rights to rely
             thereon.

1.2    REPRESENTATIONS AND WARRANTIES OF I(3)S. In order to induce GTE to enter
       into this Agreement, I(3)S represents and warrants (which representations
       and warranties shall survive the delivery of this Agreement) as follows:

                                                                               2
GTE HSDS Agreement
<PAGE>   3

         (a) ORGANIZATION AND QUALIFICATION. I(3)S is a Texas corporation duly
             organized and validly existing and in good standing under the laws
             of the State of Texas; has all requisite power and authority to own
             its property and assets and to carry on its business as, and in the
             places where, such property and assets are owned or such business
             is now conducted; and is duly qualified to do business and is in
             good standing in the State of Texas and in every other jurisdiction
             in which such qualification is necessary or desirable, including,
             but not limited to, any jurisdictions contemplated by this
             Agreement.

         (b) NO DEFAULTS. I(3)S is not in default under any instrument or
             agreement existing as of the date hereof by which I(3)S is bound
             that may adversely affect its ability to perform its obligations
             under this Agreement; and no default hereunder has occurred and is
             continuing.

         (c) TITLE. I(3)S has good, valid and indefeasible title to its property
             that pertains in any way to HSDS, and all such property is free and
             clear of all adverse claims, interests and liens, except as has
             been heretofore disclosed in writing to GTE.

         (d) ENFORCEABLE OBLIGATIONS; AUTHORIZATION. This Agreement is a legal,
             valid and binding obligation of I(3)S, enforceable in accordance
             with its terms; the making and performance by I(3)S of this
             Agreement have been duly authorized by all necessary action; are
             within the power and authority of I(3)S; will not contravene or
             violate any legal requirement, shareholders agreement of I(3)S, or
             articles of incorporation or bylaws of I(3)S; and will not result
             in the breach of, or constitute a default under, any agreement,
             instrument, judgement, license, order, franchise or permit to which
             I(3)S is a party, or any of its property may be bound or affected.

         (e) PERMITS, LICENSES, ETC. I(3)S possesses all material permits,
             licenses, franchise rights, trademarks, trademark rights, trade
             names, trade name rights, copyrights and all other applicable
             intellectual property rights which are required to conduct the
             business of HSDS and to perform I(3)S, obligations under this
             Agreement.

         (f) INSURANCE. I(3)S carries insurance with reputable insurers covering
             I(3)S's property pertaining to HSDS and to the business conducted
             thereby, in such amounts and against such risks as is necessary for
             the provision of HSDS to the Properties, including (1) minimum
             limits of $1,000,000 per occurrence for bodily injury or death, (2)
             property damage liability with limits of at least $1,000,000 per
             occurrence of personal injury, and (3) $1,000,000 General Policy
             Aggregate (applicable to commercial general liability policies).

         (g) I(3)S LICENSES. I(3)S possesses all requisite licenses and
             applicable intellectual property rights from third parties
             necessary to provide HSDS to the Properties and their residents.

                                                                               3
GTE HSDS Agreement
<PAGE>   4
         (h) SURVIVAL OF REPRESENTATIONS AND WARRANTIES. All representations and
             warranties made by or on behalf of I(3)S shall survive the
             execution and delivery of this Agreement, and any investigation at
             any time made by or on behalf of GTE shall not diminish its rights
             to rely thereon.

                                    ARTICLE 2
                                      TERM

2.1    TERM. The term of this Agreement, including the financial provisions
       pertaining thereto, shall be for five (5) years commencing on the
       Effective Date; provided, however, that with respect to each Property
       covered hereby, the term of this Agreement shall always be coterminous
       with the term (including any extensions thereof) of the individual GTE
       agreement with MDU property owners or management companies to provide
       cable antennae television, direct broadcast satellite or
       telecommunications services thereto.

                                    ARTICLE 3
                                   EXCLUSIVITY

3.1    EXCLUSIVITY. Although it is intended that GTE and I(3)S will offer and
       provide HSDS, respectively, to the Properties, as mutually agreed between
       the parties, in all metropolitan areas where GTE and I(3)S maintain
       operations, neither GTE nor I(3)S shall be precluded from entering into
       agreements with third parties to provide HSDS to such parties' customers
       thereunder. Notwithstanding the foregoing, GTE shall not market, sell,
       provide or promote, or cause to be marketed, sold, provided or promoted,
       directly or indirectly, a service which is competitive with HSDS, in
       whole or in part, to the Properties served by I(3)S under the terms and
       provisions, and during the term, of this Agreement; accordingly, GTE
       shall not proactively market any Internet access service that competes
       with HSDS on the Properties during the term hereof; provided, however,
       that for purposes of this Section 3.1, GTE's branded dial-up Internet
       access service or GTE's branded DSL service shall not be considered a
       competing service with HSDS.

                                    ARTICLE 4
                          AFFIRMATIVE COVENANTS OF GTE

4.1    In consideration of the mutual agreements of the parties contained
       herein, GTE unconditionally covenants and agrees to do and perform, or
       cause to be done and performed, the following:

         (a) GTE shall maintain, or cause to be maintained, in full force and
             effect an adequate right of entry, which permits I(3)S hereunder to
             provide HSDS to the Properties throughout the term of this
             Agreement.

GTE HSDS Agreement                                                             4
<PAGE>   5

         (b) GTE shall maintain its corporate existence and remain in good
             standing under the laws of and in every jurisdiction in which such
             qualification to do business is necessary or desirable for purposes
             of this Agreement.

         (c) GTE shall not knowingly become in default and remain in default
             under any instrument or agreement which GTE is bound that may
             adversely affect its ability to perform its obligations under this
             Agreement.

         (d) GTE shall possess and maintain good, valid, indefeasible and
             marketable title to its property that pertains in any way to its
             performance under this Agreement, and all such property shall
             remain free and clear of any adverse claims, interests and liens,
             except as has been heretofore disclosed in writing to I(3)S, or
             except for rights of subordination granted to lenders of MDU
             owners.

         (e) GTE shall maintain in full force and effect all material permits,
             licenses, franchise rights, trademarks, trademark rights, trade
             names, trade name rights and copyrights which are required to
             conduct its business.

         (f) GTE shall maintain in full force and effect all MDU property or
             operating agreements pertaining to the provision of HSDS to the
             Properties, but shall have the right, in its sole discretion, to
             terminate any such agreement as long as I(3)S has not yet placed
             equipment on the affected Property.

         (g) GTE shall maintain in full force and effect adequate insurance with
             reputable insurers covering GTE's property pertaining to HSDS, in
             such amounts and against such risks as is necessary for the
             provision of services to the Properties.

         (h) GTE shall use all commercially reasonable efforts to assist I(3)S
             in providing HSDS on Properties mutually selected by GTE and I(3)S
             on terms and conditions mutually acceptable to I(3)S and GTE; which
             Properties shall be added as Riders to Exhibit A attached hereto
             and incorporated herein by reference for all purposes; provided,
             however, that subject to I(3)S' right of first refusal set forth in
             Section 8.2 hereof, GTE shall identify the Properties to be
             submitted to I(3)S for the provision of HSDS under this Agreement,
             and is not required to submit all of its MDU properties for the
             provision of HSDS under this Agreement.

         (i) As more specifically described in Exhibit B attached hereto and
             incorporated herein by reference, for Properties covered by this
             Agreement, GTE shall assume the obligations and timely pay all
             operating and capital costs and expenses, if any, associated with
             any and all:

                                                                               5
GTE HSDS Agreement
<PAGE>   6

                (1) Monthly recurring on-site headend, cabling and wiring
                    maintenance for equipment and facilities owned by GTE

                (2) Leasing agent sales commissions and property owner revenue
                    sharing, if any, required under agreements between property
                    owners or managers and GTE

                (3) Insurance on GTE-owned capital equipment related to HSDS

                (4) GTE-specific training for HSDS

                (5) MDU property CATV or other cabling and wiring upgrades

                (6) Adequate on-site MDU space for the installation and
                    maintenance of I(3)S equipment

                (7) Reasonable access to residents' apartments for the
                    installation and maintenance of customer premise equipment

                (8) Customer service representatives (non-I(3)S personnel)

                (9) Periodic access to the rent roll pertaining to the
                    Properties if permitted by GTE's agreements pertaining to
                    the Properties

                                    ARTICLE 5
                         AFFIRMATIVE COVENANTS OF I(3)S

5.1    In consideration of the mutual agreements of the parties contained
       herein, I(3)S covenants and agrees to do and perform, or cause to be done
       and performed, the following:

         (a) I(3)S shall maintain its corporate existence and remain in good
             standing under the laws of the State of Texas and in every other
             jurisdiction in which such qualification to do business is
             necessary or desirable for its performance under this Agreement.

         (b) I(3)S shall not become in default under any instrument or agreement
             by which I(3)S is bound that may adversely affect its ability to
             perform its obligations under this Agreement.

         (c) I(3)S shall possess and maintain good, valid, indefeasible and
             marketable title to its property that pertains in any way to HSDS,
             and all such property shall remain free and clear of any adverse
             claims, interests and liens, except as has been heretofore
             disclosed in writing to GTE.

         (d) I(3)S shall maintain in full force and effect all material permits,
             licenses, franchise rights, trademarks, trademark rights, trade
             names, trade name rights, copyrights, and all other applicable
             intellectual property rights which are required to conduct the
             business of HSDS and to perform I(3)S' obligations under this
             Agreement.

         (e) I(3)S shall maintain in full force and effect adequate insurance
             with reputable insurers covering I(3)S's property pertaining to
             HSDS and to the conduct of the

                                                                               6
GTE HSDS Agreement
<PAGE>   7
             business pertaining thereto, in such amounts and against such risks
             as are necessary for the provision of HSDS to the Properties,
             including (1) minimum limits of $1,000,000 per occurrence for
             bodily injury or death, (2) property damage liability with limits
             of at least $1,000,000 per occurrence of personal injury, and (3)
             $1,000,000 General Policy Aggregate (applicable to commercial
             general liability policies).

         (f) As more specifically described in Exhibit C attached hereto and
             incorporated herein by reference, I(3)S shall assume and pay all
             operating and capital costs and expenses associated with any and
             all:

             (1)  Monthly recurring private Internet exchange points

             (2)  Monthly recurring switch maintenance

             (3)  Monthly recurring POP transport

             (4)  Monthly recurring Dallas network operations center costs
                  (including installation costs)

             (5)  Customer support IP technicians and engineers (NOC, Help Desk
                  and field personnel)

             (6)  I(3)S-specific training

             (7)  Insurance on I(3)S capital equipment

             (8)  Switch site equipment (including installation costs)

             (9)  Peering point routers

             (10) Private Internet exchange point hardware (including
                  installation costs)

             (11) I(3)S network infrastructure equipment

             (12) Transport facilities

             (13) Backbone transport facilities

             (14) Peering interconnection facilities

             (15) Recurring property maintenance (Lce, Router, DSU/CSU)

             (16) Recurring IP headend maintenance

             (17) CSR platform and services (non-GTE)

             (18) Internet browser platform user license

             (19) MDU property IP equipment (Lce, Router, DSU/CSU)

             (20) IP master headend equipment

             (21) Local loop transport costs

             (22) Customer billing and collections

             (23) HSDS marketing and promotion

             (24) Any other costs associated with providing HSDS

             (25) All activities referenced in Exhibit C to this Agreement

                                    ARTICLE 6
                   HIGH SPEED DATA SERVICES PROVIDED BY I(3)S

6.1    DESCRIPTION OF HSDS. During the term of this Agreement, I(3)S shall
       provide, or cause to be provided; the high speed data services, in whole
       or in part, more particularly described and set forth in Exhibit D.

GTE HSDS Agreement                                                             7
<PAGE>   8

6.2    HSDS SUBSCRIBER TERMS AND CONDITIONS. I(3)S and GTE shall jointly
       develop, in good faith, an HSDS Subscriber Agreement to govern the
       provision of HSDS on the Properties.

                                    ARTICLE 7
                          HSDS SERVICE LEVEL STANDARDS

7.1    DEFINITION OF HSDS SERVICE LEVEL STANDARDS. Subject to the conditions,
       qualifications and limitations set forth herein, including, without
       limitation, those set forth in Exhibit E attached hereto and incorporated
       herein by reference, during the term of this Agreement, I(3)S warrants
       and represents that it shall offer, or cause to be offered, and shall
       provide, or cause to be provided, HSDS at or exceeding the service level
       standards pertaining to various aspects of HSDS, as more particularly
       described and set forth in Exhibit E.

                                    ARTICLE 8
             REVENUE ALLOCATION; CUSTOMER ACCESS PRICING; BRANDING;
                               OTHER GTE SERVICES

8.1    REVENUE ALLOCATION. All monthly HSDS revenue generated by customers under
       the Agreement will be billed and collected by I(3)S throughout the term
       of the Agreement; provided, however, that, by the fifteenth (15th) day of
       each month I(3)S shall pay GTE a revenue sharing fee ("GTE Revenue
       Sharing Fee") calculated on the basis of customer access revenue
       (exclusive of, without limitation, customer premise equipment
       installation charges, customer service charges, customer equipment sales
       or leases, sums "passed through" on a no-mark up basis collected by or on
       behalf of I(3)S, and comparable or similar charges) actually collected by
       or on behalf of GTE and I(3)S for the immediately preceding month in
       accordance with the following table:

<TABLE>
<CAPTION>
           Penetration on Property                 GTE Revenue Sharing Fee
(Sum of the total number of paying customers   (Percentage of Gross Connectivity
             per day, per month                            Revenue)
   divided by the total units on property)

<S>                                            <C>
0% to 10%                                                     *
Greater than 10% to 15%                                       *
Greater than 15% to 20%                                       *
Greater than 20% to 30%                                       *
Greater than 30% to 40%                                       *
Greater than 40%                                              *
</TABLE>

                                                                               8
GTE HSDS Agreement
<PAGE>   9

8.2    MODIFICATION OF REVENUE SHARING FEES; RIGHT OF FIRST REFUSAL BY I(3)S;
       MOST FAVORED PARTNER PROVISION. GTE acknowledges and agrees that the
       Revenue Sharing Fees set forth above are predicated upon I(3)S providing
       HSDS to substantially all of the Properties mutually agreed between I(3)S
       and GTE. With respect to I(3)S' provision of HSDS to GTE MDU properties,
       I(3)S shall have the right of first refusal to provide HSDS to all MDU
       properties served or to be served by GTE where GTE provides or will
       provide satellite master antennae television, wireline CATV, or direct
       broadcast satellite services and has elected, in its business judgment,
       to offer HSDS to residents thereof. In the event that GTE presents an
       MDU property to I(3)S for the provision of HSDS, I(3)S shall either
       approve or refuse such MDU property within fifteen (15) business days
       from the date GTE first presents the MDU property to I(3)S for approval.
       In the event that I(3)S fails to respond within said fifteen (15) day
       period; it will be deemed to have refused the right to provide HSDS to
       said MDU property, unless the parties agree to extend said fifteen (15)
       day approval period. During the term of this Agreement, I(3)S shall offer
       GTE the most favored terms that I(3)S has then contracted for with other
       non-affiliated third party partners pertaining to HSDS in the MDU market
       for the same terms and conditions that GTE and I(3)S have entered into
       under this Agreement for all future Properties that become subject to
       this Agreement thereafter, unless said terms and conditions are less
       favorable than the terms and conditions hereof in which case GTE may
       elect to continue to adopt the terms and conditions of this Agreement.

8.3    CUSTOMER ACCESS PRICING; MARKET PLANS. With the intent to increase HSDS
       penetration at each of the Properties served under this Agreement, I(3)S
       shall upon consultation with GTE establish the price and rates at which
       access to the HSDS is made available to customers and end-users, the
       initial rates for which are set forth in Exhibit F attached hereto;
       provided, however, that in the event that I(3)S is generally providing
       access to the HSDS in the same Standard Metropolitan Statistical Area
       (SMSA) at subscriber rates which are substantially lower than the rates
       and prices I(3)S is then charging customers and end-users for the same
       access services hereunder, then upon written request by GTE, I(3)S shall
       lower the rates and prices hereunder to be competitive with the lower
       rates generally being charged by I(3)S for said access services in the
       same SMSA. Further, I(3)S shall remain competitive with the prices then
       being charged by other comparable high speed, broadband Internet access
       services generally being offered by commercial HSDS providers in the same
       SMSA. Marketing plans pertaining to HSDS on the Properties shall be
       established by I(3)S with significant input and advice from GTE, and
       subject to GTE's approval, which approval shall not be unreasonably
       withheld, delayed or conditioned.

8.4    BRANDING. With respect to HSDS, and the promotion thereof, upon
       consultation with GTE, I(3)S shall establish the brand names, logos,
       labels, trademarks, service marks and other such identifying promotional
       characteristics pertaining to the same throughout the term of this
       Agreement. It is intended by the parties that the HSDS will be branded
       BroadbandNOW!(TM), and I(3)S hereby grants to GTE a royalty-free,
       nonexclusive, nontransferable license during the term of this Agreement
       to use the

                                                                               9
GTE HSDS Agreement
<PAGE>   10

       BroadbandNOW(TM) name, service mark, trademark and logo in GTE's printed
       material and advertising of any kind pertaining to the offering of HSDS
       to MDU properties. Except as specifically set forth in this Agreement,
       nothing in this Agreement shall grant, suggest or imply any authority for
       one party to use the name, trademarks, service marks or trade names of
       the other for any purpose whatsoever. Without the prior written consent
       of GTE, which consent shall not be unreasonably withheld, delayed or
       conditioned, I(3)S shall not acquire any right to use, and shall not use,
       the name "GTE", the GTE logo, or any other GTE trademark or service mark
       known to I(3)S.

8.5    OTHER GTE SERVICES. With respect to other GTE services then being offered
       by GTE and its affiliates throughout the term of the Agreement that may
       be contracted for by I(3)S in connection with the provision of the HSDS
       hereunder and pursuant to other agreements or relationships with third
       parties, I(3)S and GTE shall negotiate in good faith to allow GTE or its
       affiliates the opportunity to provide such services to I(3)S on terms and
       conditions acceptable to I(3)S and at prices and rates which are
       competitive with other similar or comparable providers of such services
       in markets then being served by GTE, or as tariffed.

                                    ARTICLE 9
                        SPECIFIC HSDS SOFTWARE WARRANTIES

9.1    OWNERSHIP; AUTHORITY. I(3)S represents and warrants that the software
       utilized hereunder for the provision of HSDS (collectively, the
       "Products") are free and clear of all liens and encumbrances, and that it
       has full power and authority to utilize the rights granted to it with
       respect to such Products without the consent of any other person or that
       such consent has been obtained, and that to the knowledge of I(3)S the
       Products utilized hereunder will not infringe or violate any copyright,
       trade secret, trademark, patent or other intellectual property rights of
       any third party

                                   ARTICLE 10
                                 INDEMNIFICATION

10.1   INTELLECTUAL PROPERTY RIGHTS INDEMNIFICATION. I(3)S shall defend,
       indemnify and hold harmless GTE, its parent, subsidiaries, affiliates,
       directors, officers, shareholders, employees and agents and its
       successors and assigns, from and against any and all claims, demands,
       actions, liabilities, losses, damages and expenses, including, without
       limitation, settlement costs and reasonable attorneys' fees, arising out
       of or relating to any actual or alleged infringement of any third party's
       trade secrets, trademark, service mark, copyright, patent or other
       intellectual property rights (the "Intellectual Property Rights") in
       connection with the use of said Intellectual Property Rights hereunder.
       I(3)S's obligation pursuant to the immediately preceding sentence is
       subject to the following conditions: (i) GTE shall give I(3)S prompt
       written notice of all actions, claims or threats against GTE of

                                                                              10
GTE HSDS Agreement
<PAGE>   11

       infringement or violation of Intellectual Property Rights; (ii) GTE shall
       permit I(3)S to elect to assume complete control of such claims at its
       sole discretion and expense; provided, however, that GTE may elect, in
       such case, to retain its own counsel, at GTE's expense, to represent
       GTE's interest; and further, provided, however, that I(3)S will fully
       cooperate with GTE and keep it fully informed and refrain from entering
       into any settlement or agreed judgment without GTE's prior written
       consent, which consent shall not be unreasonably withheld, delayed or
       conditioned; and (iii) GTE shall cooperate fully with I(3)S in defending
       against claims, including making known or available to the indemnifying
       party, upon reimbursement of all costs associated with provision or
       reproduction of, all records and document pertaining to claims.

10.2   CROSS INDEMNIFICATION FOR OBLIGATIONS UNDER THIS AGREEMENT. Each party
       hereby agrees to indemnify, defend and hold harmless the other party from
       any and all damages, liabilities, costs and expenses, including, without
       limitation, reasonable attorneys' fees and expenses, arising out of,
       under or in connection with the indemnitor party's duties, obligations,
       actions or performance under this Agreement, or the indemnitor party's
       gross negligence or willful misconduct.

10.3   LIMITATION OF LIABILITY. It is expressly understood that GTE makes no
       projection, representation or warranty regarding the amount of revenue
       that may be earned by I(3)S under this Agreement. Neither party shall be
       liable to the other party for any indirect, incidental, special, or
       consequential damages of any kind whatsoever; provided, however, that
       this limitation of liability shall not apply to either party's
       indemnification obligations under this Agreement.

                                   ARTICLE 11
                        PROTECTION OF PROPRIETARY RIGHTS

11.1   DEFINITION. During the term of this Agreement, I(3)S and GTE will provide
       to each other or will come into possession information relating to each
       other's business which is considered confidential or proprietary (the
       "Confidential Information"). Confidential Information shall include,
       without limitation, the HSDS software and documentation, all of I(3)S's
       and GTE's trade secrets and all know-how, design, invention, plan or
       process and information relating to I(3)S's and GTE's respective business
       operations, services, products, research and development and all other
       information that is marked "confidential" or "proprietary" prior to or
       upon disclosure, or which, if disclosed orally, is identified by the
       disclosing party as being Confidential Information in writing within
       thirty (30) days after its initial disclosure.

11.2   RESTRICTIONS; NON-DISCLOSURE; NON-USE. Each party shall use its best
       efforts to maintain the confidentiality of such Confidential Information
       and not show or otherwise disclose such Confidential Information to any
       third parties, including, but

                                                                              11
GTE HSDS Agreement
<PAGE>   12

       not limited to, independent contractors and consultants, without the
       prior written consent of the disclosing party. Each party shall use the
       Confidential Information solely for purpose of performing its obligations
       under this Agreement. Further, neither party shall use or exploit,
       directly or indirectly, the Confidential Information of the other party.
       There shall be no implied license granted to the receiving party by the
       disclosing party to use Confidential Information by virtue of the
       disclosure of such Confidential Information hereunder. Each party shall
       indemnify and hold harmless the other party from any loss or damage the
       other party may sustain as a result of the wrongful use or disclosure by
       such party (or any employee, agent, licensee, contractor, assignee or
       delegatee of the other party) of its Confidential Information.

11.3   AUTHORIZED DISCLOSURES. Notwithstanding the obligations described in
       Section 9.2 above, neither party shall have any obligation to maintain
       the confidentiality of any Confidential Information which: (i) is or
       becomes publicly available by other than unauthorized disclosure, by the
       receiving party; (ii) is independently developed by the receiving party
       without reference to Confidential Information of the disclosing party as
       established by documentary evidence in the receiving party's files; or
       (iii) is received from a third party who has lawfully obtained such
       Confidential Information without a confidentiality restriction. If
       required by any court of competent jurisdiction or other governmental
       authority, the receiving party may disclose to such authority, data,
       information or material involving or pertaining to Confidential
       Information to the extent required by such order, provided that the
       receiving party shall first have used its best efforts to obtain a
       protective order reasonably satisfactory to the disclosing party
       sufficient to maintain the confidentiality of such data, information or
       materials.

11.4   LIMITED ACCESS. Each party shall limit the use and access of Confidential
       Information to such party's bonafide employees or agents who have a need
       to know such information for purposes of conducting the receiving party's
       business. Each party shall notify all employees and agents who have
       access to Confidential Information or to whom disclosure is made that the
       Confidential Information is the confidential, proprietary property of the
       disclosing party and shall instruct such employees and agents to maintain
       the Confidential Information in confidence.

11.5   CONTINUING OBLIGATIONS. Each party's obligations under this Article 9
       shall survive the termination of this Agreement for three (3) years
       thereafter.

                                   ARTICLE 12
                     DEFAULT; EARLY TERMINATION; EXPIRATION

12.1   DEFAULT. Upon the occurrence of any of the following events, a party
       shall be deemed to be in default under this Agreement:

         (a) Material breach of any warranty or representation by the defaulting
             party;

                                                                              12
GTE HSDS Agreement
<PAGE>   13

         (b) Material failure to perform the defaulting party's obligations
             hereunder, including with respect to I(3)S its failure to (i)
             maintain the service standards set forth in Section 7.1 hereof, and
             (ii) make the payments to GTE set forth in Section 8.1 hereof.

         (c) The defaulting party's ceasing to conduct business in the normal
             course, insolvency, the making of a general assignment for the
             benefit of its creditors, suffering or permitting the appointment
             of a receiver or similar officer for its business or assets or
             availing itself of, or becoming subject to, any proceeding under
             the United States Federal Bankruptcy Laws or any federal or state
             statute relating to solvency or the protection of the rights of
             creditors; or

         (d) Making of any warranty, representation, statement or response in
             connection with this Agreement which was untrue in any material
             respect on the date it was made by the defaulting party.

12.2   REMEDIES. In the event the defaulting party fails to cure any default set
       forth hereunder for a period of thirty (30) days after written notice of
       such default by the non-defaulting party, the non-defaulting party may
       terminate this Agreement without further obligation on the part of the
       non-defaulting party, and pursue any claims at law or in equity against
       the defaulting party.

12.3   FAILURE TO EXERCISE REMEDY. The remedies set forth above are cumulative,
       but the non-defaulting party is under no obligation to exercise any such
       remedy. The exercise of, or failure to exercise, any such remedies shall
       not prevent any future exercise of the same or any other remedies or
       release the defaulting party from its obligations under this Agreement.

12.4   EFFECT OF TERMINATION. Early termination or expiration of this Agreement
       shall not impair either party's then accrued rights, obligations,
       liabilities or remedies hereunder.

12.5   EXAMINATION; AUDIT RIGHTS. I(3)S agrees that GTE has the right to audit
       or otherwise examine, or have audited or otherwise examined, on an annual
       basis all applicable books, records, documents, and other data of I(3)S,
       including computations and projections, specifically and only relating to
       the GTE Revenue Sharing Fee under this Agreement, and I(3)S' billing and
       collection of revenues from HSDS subscribers. If GTE's audit reveals that
       GTE has been underpaid its GTE Revenue Sharing Fee by a percentage in
       excess of five percent (5%) over the period of the audit, I(3)S shall pay
       GTE's reasonable costs of the audit, in addition to paying all past due
       amounts owed to GTE. I(3)S shall make available at its principal place of
       business at all reasonable times during normal business hours the
       materials described in the first sentence of this Section 12.5 for
       examination, audit, or reproduction. In the event that this Agreement is
       completely or partially terminated, the records relating to the GTE
       Revenue Sharing Fee shall be made

                                                                              13
GTE HSDS Agreement
<PAGE>   14

       available for two (2) years after any termination of this Agreement.
       Records pertaining to appeals or to litigation or the settlement of
       claims arising under or relating to either party's performance under this
       Agreement shall be made available until disposition of such appeals,
       litigation or claims.

                                   ARTICLE 13
                           NOTICE; PUBLIC DISCLOSURES

13.1   NOTICE. Any notice, demand or other communication required or permitted
       by any provision of this Agreement shall be deemed to have been
       sufficiently given or served for all purposes when delivered in person or
       sent by registered or certified mail, return receipt requested, all
       postage and other charges prepaid, to the respective addresses of the
       parties first noted above, or at such other address as may be designated
       by notice from such party to the other party pursuant to their terms of
       this section. In addition, a copy of all notices given to GTE under this
       Agreement shall be sent to: Sandra Skogen, Law Department, GTE
       Communications Corporation, 6665 North MacArthur Blvd., Irving, Texas
       75039; 972-465-4826 (Fax).

13.2   PUBLIC DISCLOSURES. All media releases, public announcements, and public
       disclosures by either party of its employees, agents or representatives
       relating to this Agreement or the subject matter hereof, excluding any
       announcement beyond the control of this disclosing party, will be
       approved by the non-disclosing party in writing prior to release.

                                   ARTICLE 14
                                  MISCELLANEOUS

14.1   ENTIRE AGREEMENT. This Agreement, together with the schedules,
       attachments and exhibits attached hereto or referred to herein,
       constitutes the entire Agreement and understanding among the parties
       hereto and is the final expression of their Agreement and no evidence of
       oral or other written promises shall be binding. All other prior
       agreements or understandings related to the subject hereof among the
       parties, whether written or oral, shall be null and void and of no
       further force and effect upon the execution of this Agreement. This
       Agreement shall be binding upon and inure to the benefit of the parties
       hereto and their respective successors and permitted assigns.

14.2   INCORPORATION BY REFERENCE. The schedules, exhibits and attachments
       referred to herein or attached hereto are hereby incorporated in and to
       this Agreement and made a part hereof by this reference.

14.3   AMENDMENT; MODIFICATION. This Agreement may not be supplemented, amended,

                                                                              14
GTE HSDS Agreement
<PAGE>   15
       modified or otherwise altered except by written instrument executed by
       all the parties hereto and no course of dealing or trade usage among or
       between the parties shall be effective to supplement, amend, modify or
       alter this Agreement.

14.4   WAIVER. The failure to enforce or to require the performance at any time
       of any of the provisions of this Agreement herein shall in no way be
       construed to be a waiver of such provisions, and shall not affect either
       the validity of this Agreement, any part hereof or the right of any party
       thereafter to enforce each and every provision in accordance with the
       terms of this Agreement.

14.5   GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN
       ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS, WITHOUT REGARD TO ITS
       CONFLICTS OR CHOICE OF LAWS. VENUE FOR ANY ACTION BROUGHT UNDER THIS
       AGREEMENT SHALL BE IN DALLAS, DALLAS COUNTY, TEXAS.

14.6   SEVERABILITY. If any severable provision of this Agreement is deemed
       invalid or unenforceable by any judgment of a court of competent
       jurisdiction, the remainder of this Agreement shall not be affected by
       such judgment, and this Agreement shall be carried out as nearly as
       possible according to its original terms and intent, unless to do so
       would substantially impair the underlying purposes of this Agreement.

14.7   CAPTIONS. The captions appearing in this Agreement are included solely
       for convenience of reference and shall not be construed or interpreted to
       affect the meaning or interpretation of this Agreement.

14.8   FORCE MAJEURE. Neither party shall be responsible for any failure to
       comply with or for any delay in performance of the terms of this
       Agreement, including, but not limited to, delays in delivery, where such
       failure or delay is directly or indirectly caused by or results from
       events of force majeure beyond the control of either party. These events
       shall include, but not be limited to, fire, flood, earthquake, accident,
       civil disturbance, war, acts of God, or acts or government.

14.9   HIRING PROHIBITED. Unless otherwise mutually agreed between the parties,
       during the term of this Agreement and for a period of one (1) year
       thereafter, neither party shall solicit for hire or hire any employee of
       the other party who has performed services under this Agreement.

14.10  PERFORMANCE REVIEW. In the event of any dispute or controversy between
       the parties of any kind or nature, upon the written request of either
       party, each of the parties will appoint a designated officer whose task
       it will be to meet for the purpose of resolving such dispute or
       controversy or to negotiate for an adjustment to any provision of this
       Agreement needed to resolve such dispute or controversy. Such officers
       will discuss the dispute or controversy and negotiate in good faith in an
       effort to resolve the dispute or controversy or renegotiate the
       applicable section

                                                                              15
GTE HSDS Agreement
<PAGE>   16

       or provision of this Agreement without the necessity of any formal
       proceeding relating thereto. No formal proceedings for the judicial or
       arbitrational resolution of such dispute or controversy may be commenced
       until either or both of the designated officers conclude in good faith
       that an amicable resolution through continued negotiation of the matter
       at issue is not likely to occur, or until thirty (30) days have elapsed
       from the date of the written request, whichever is sooner.

14.11  BINDING NATURE; ASSIGNABILITY. This Agreement will be binding on the
       parties hereto, and their respective successors and assigns. Upon prior
       written notice to the other party, either party may assign its rights and
       delegate its duties under this Agreement; provided however, that the
       assignee party must unconditionally assume in writing, and agree to be
       bound by, the right, duties and obligations of the assignor party under
       this Agreement. Notwithstanding this section, no consent is required for
       an assignment of this Agreement by GTE to a parent, subsidiary or
       affiliate.

14.12  RELATIONSHIP OF THE PARTIES. Notwithstanding anything to the contrary in
       this Agreement, under no circumstances will either party be deemed to be
       in any relationship with the other party carrying with it fiduciary or
       trust responsibilities. The parties do not intend for this Agreement or
       the relationship established thereby to be considered the formation of a
       joint venture or partnership between the parties for any purpose. The
       persons provided by each party for the performance of its obligations
       hereunder shall be solely that party's employees and shall be under the
       exclusive direction and control of that party. They shall not be
       considered employees of the other party for any purpose. Each party shall
       be responsible for compliance with all laws, rules and regulations
       involving, but not limited to, employment of labor, hours of labor,
       health and payment of taxes, including federal, state and municipal
       taxes, chargeable or assessed with respect to its employees, such as
       Social Security, unemployment, workers' compensation, disability
       insurance, and federal and state withholding. Each party shall indemnify
       the other party for any loss, damage, liability, claim, demand, or
       penalty that may be sustained by reason of its failure to comply with
       this provision.

14.13  COMPLIANCE WITH APPLICABLE LAWS. Each party represents and warrants that
       the services performed by such party pursuant to this Agreement shall be
       in compliance with all applicable federal and state laws, rules and
       regulations.

                                                                              16
GTE HSDS Agreement
<PAGE>   17

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

I(3)S, INC.                                      GTE MEDIA VENTURES INCORPORATED

By: /s/ MATTHEW HUTCHINS                         By: /s/ WILLIAM D. WILSON
    --------------------                             ---------------------------
    Matthew Hutchins                             Title: President
    Vice President, Business Development               --------------
     & Corporate Affairs                         Printed Name: William D. Wilson
                                                               -----------------

Date: 11/4/98                                    Date: 11/12/98
      ------------------                               -------------------------

                                                                         [STAMP]

                                                 APPROVED AS TO FORM
                                                 /s/ KATHLEEN E. PALTER 11-10-98
                                                 -------------------------------
                                                       KATHLEEN E. PALTER
                                                        GTE LEGAL DEPT.

                                                                              17
GTE HSDS Agreement
<PAGE>   18

                                    EXHIBIT A
                               MDU PROPERTY RIDERS

                           FORM OF MDU PROPERTY RIDER
                         (Type of Information Required)

1.   MDU Property Owner/Agent: ________

2.   Term of Property Agreement: ________

3.   Acknowledgement by Owner of Right of HSDS Access to Property.

4.   Location of MDU Property: ________

5.   Contact Person/Leasing Agent: ________

6.   CATV/MATV Site Survey Information:

7.   Number of Units: ________

8.   Number of Buildings: ________

9.   Current Occupancy: ________

lO.  Existing Property (including age) or New Build: ________

11.  PC Ownership Survey: ________

12.  Existing/Proposed Local Loop Trunking:

                                                                              18
GTE HSDS Agreement
<PAGE>   19

                                    EXHIBIT B

                              PROPERTY NETWORK AND
                           LOCAL LOOP CHARACTERISTICS

GTE'S RESPONSIBILITIES:

o    Build or obtain exclusive access to and maintain CATV infrastructure to
     comply with FCC requirements.

o    Build or obtain exclusive access to and maintain property CATV
     infrastructure to provide bi-directional cable delivery to all subscribers.

o    Maintain the upgraded bi-directional CATV infrastructure to exceed the
     minimal operational requirements of the I(3)S cable modem system, which
     are:

<TABLE>
<CAPTION>
Minimum Cable Television Network Requirements                Value
              for i3s.net HSDS
<S>                                               <C>

Amplitude variations inband
  Forward channel                                 5 dB total
  Return channel                                  5 dB total

Group delay variation inband
  Forward channel                                  60 nsec/MHz, 240 nsec total
  Return channel                                  200 nsec/MHz, 800 nsec total

Maximum tap to tap variation                      27 dB

Dynamic range on receiver                         -15 dBmV to +15 dBmV

Maximum return/upstream loss                      49 dB

Minimum carrier to noise                          22 dB

Minimum carrier to interference                   25 dB
</TABLE>

Provide, or cause to be provided, two (2) six MHz video channels within the CATV
infrastructure bandwidth on Internet served properties; one (1) in the spectrum
from 54 MHz to 750 MHz and one (1) in the 5MHz to 50 MHz spectrum; and reserve
another two (2) additional video channels, in the same spectrums for future
expansion as Subscriber penetration on the property increases.

Provide, or cause to be provided, proper space, security and power for data
communication equipment necessary to provide Internet delivery and other data
services on the property.

Provide, or cause to be provided, coaxial connection (coax drop) to each
Subscriber's unit. Designate an engineering point of contact for I(3)S Network
Operations Center (NOC) to report problems or failures twenty-four hours per
day, seven days per week (24x7).

I(3)S / GTE Media Ventures Exhibits                                 Confidential

<PAGE>   20
                                    EXHIBIT C
                                POINT OF PRESENCE
                     FEATURES AND ESTABLISHMENT REQUIREMENTS

I(3)S RESPONSIBILITIES:

     Install, maintain and operate data delivery equipment for each property
     offering HSDS. Installation and maintenance will meet or exceed
     manufacturer's specifications. Through itself or its agents, GTE will
     assist I(3)S with pre-installation engineering planning and site survey
     questionnaires, installation, testing and preparation of maintenance
     schedules.

     Integrate all data delivery equipment for each property into the I(3)S
     Element Management System portion of its Network Management Platform using
     SNMP and RMON. I(3)S will monitor all data delivery equipment twenty-four
     hours per day, seven day per week (24x7).

     Assume the cost of the acquisition of I(3)S-specified data communication
     equipment conforming to the I(3)S design for HSDS and necessary to provide
     termination and delivery of HSCS between the Subscriber and the I(3)S POP
     in each Market.

     Order, provision, install and maintain local loop pathways between each
     property and I(3)S POP in each Market with a bandwidth of not less than
     1.544 mb/s (T1). In addition, as the number of Subscribers on each property
     increases, scale the local loop bandwidth so that each simultaneously
     active user averages approximately 1 mb/s ninety eight percent (98%) of the
     time. Both parties acknowledge that the end-to-end performance of HSDS is
     probabilistic and subject to anomalous short-lived usage patterns by
     Subscribers which will affect both the utilization of the local-loop
     circuits and the I3s.net national backbone from time to time.

     Configure and operate all data delivery equipment to efficiently integrate
     with the rest of the I3s.net network.

     Acquire, install and maintain data communication equipment at each POP for
     the termination and transmission of HSDS from properties to the i3s.net
     national network backbone.

     I(3)S will determine the location of its main presence in each Market to be
     consistent with its own operational practices (which currently include
     co-locating within its carrier's central offices in each Market).

     Acquire, install, maintain and operate Internet peering relationships at
     public and private Internet Exchange Points (EP) with other Tier 1 Internet
     backbone networks throughout the United States.

     Acquire, install, maintain and operate computers and software to provide
     Network Management and provide Internet services for Subscribers. To
     provide these functions, I(3)S will employ a combination of
     locally-distributed-to-the-POP servers as well as globally centralized
     servers consistent with its overall network design and operational
     practices.

     Order, provision, install, maintain and operate data transport/carriage
     pathways from each POP, EP and/or NOC with a bandwidth not less than 45
     mb/s (DS-3) interconnection. In addition, as the number of Subscribers on
     Market increases, scale the bandwidth so that each simultaneously active
     user averages approximately 1 mb/s ninety eight percent (98%) of the time.
     Both parties acknowledge that the end-to-end performance of HSDS is
     probabilistic and subject to anomalous short-lived usage patterns by
     Subscribers which will affect both the utilization of the local-loop
     circuits and the i3s.net national backbone from time to time.

I(3)S / GTE Media Ventures Exhibits                                 Confidential

<PAGE>   21

                              EXHIBIT C (CONTINUED)

                               CUSTOMER HELP LINE
                          SERVICE AND REQUIRED FEATURES

 I(3)S RESPONSIBILITIES

          Provide toll free numbers for:

                  Inquires about the HSDS product
                  Ordering and scheduling installation of HSDS products
                  Billing inquiries
                  Initial technical support inquires

          Operate 24x7 customer service call center operation.

          Maintain sufficient customer service staff and call center capacity to
          connect to Subscribers within 5 minutes of call entering processing
          operation.

          Resolve billing issues within 24 hours 95% of time.

          Resolve property network issues within 24 hours 95% of time.

          Develop and publish escalation procedure for Help Desk and attendants
          related to network issues.

          Provide toll free number for:

                  Technical support for all HSDS issues
                  Technical support for Subscriber CPU hardware and software
                  issues related to HSDS Technical support for cable modem
                  issues

          Answer toll free line consistent with the GTE/I(3)S service co-brand

          Operate 24x7 customer service call center operation.

          Maintain sufficient customer service staff and call center capacity to
          connect to Subscribers within 5 minutes of call entering processing
          operation.

          Resolve technical issues within 24 hours if a phone call is required
          95% of time.

          Resolve technical issues within 48 hours if a truck roll is required
          95% of time.

          Develop and publish escalation procedure for Help Desk and attendants
          related to network issues.

          Develop and publish escalation procedures for GTE to contact regarding
          technical issues related to the network.

          Provide training support for GTE's customer service representatives
          (train-the-trainer support).

I(3)S / GTE Media Ventures Exhibits                                 Confidential

<PAGE>   22

                              EXHIBIT C (CONTINUED)

                 SUBSCRIBERS' HARDWARE AND SOFTWARE INSTALLATION
                  SPECIFICATIONS AND INSTALLATION REQUIREMENTS

I(3)S SHALL:

          Verify that potential Subscribers' personal computers meet the
          I(3)S-established minimum requirements for the supplied software and
          the HSDS service.

          Make an appointment with each new Subscriber to meet the I(3)S
          installation personnel for the installation of the HSDS in the
          Subscriber's unit.

          Supply I(3)S with Subscribers' information required to install,
          provision and complete the set up of Subscribers' HSDS service. GTE
          and I(3)S will jointly develop an appropriate paper-form-based system
          or automated system to facilitate this process.

          Provide, or cause to be provided, coaxial connection to the
          Subscriber's specified location.

          Verify, or cause to be verified, that the coaxial connection completed
          to the Subscriber's specified location exceeds the minimum operational
          requirements for the I(3)S/supplied cable modem and the I(3)S HSDS
          service.

          Verify, or cause to be verified, that all CATV services function
          properly after I(3)S completes installation.

          Maintain a sufficient inventory of cable modems for each Market and
          develop procedures to restock cable modems as used in Subscriber
          installations.

          Issue and install the required number of cable modems for the service
          requested by the Subscriber.

          Meet the Subscriber at the Subscribers location at the scheduled time
          within the tolerances and limits as defined in the I(3)S Service Level
          Agreement.

          Install the required cable modems(s) in the Subscriber's unit.

          Install any required network interface cards (NICs), TCP/IP protocols
          and Internet software suite in the Subscriber's personal computer.

          Offer the Subscriber a brief introduction to the HSCS to be performed
          at the time of installation. This introduction will include how to
          launch the service, how to find the training material on the i3s.net
          Web site, how to find the Subscriber Support Section on the i3s.net
          Web site and how to call for technical assistance or support.

          Obtain signatures required to verify that installation was executed
          properly and to the satisfaction of the Subscriber.

          Provide GTE with a copy of the installation transaction documentation
          verifying that the completed installation is ready for billing. This
          documentation will include the cable modem delivery receipt, the ISP
          contract and the completed work order.

I(3)S / GTE Media Ventures Exhibits                                 Confidential

<PAGE>   23

                              EXHIBIT C (CONTINUED)

                       PROCEDURES FOR DETECTION AND NOTICE
                 OF GTE PROPERTY NETWORK OR LOCAL LOOP FAILURES

I(3)S SHALL:

          Use the cable modem system, and certain network management features
          that it provides, to monitor the availability and quality of GTE's
          property network (its CATV plant).

          Report to GTE's designated engineering point of contact any problems
          observed by the I(3)S NOC in the course of operating the cable modem
          system network management features.

          Report to GTE's designated engineering point of contact any problems
          determined by Subscriber contact in the course of operating the
          Subscriber Help Desk.

          Offer to GTE a read-only direct computer interface into the I(3)S
          cable modem system's network management platform for the purposes of
          direct observation of the information produced by the management
          platform and possible enhancement of GTE's Property network
          operations. If GTE elects to implement a read-only direct-computer
          interface, GTE will be responsible for all of the costs associated
          with such an interface.

I(3)S / GTE Media Ventures Exhibits                                 Confidential

<PAGE>   24

                                    EXHIBIT D

                  DEFINITION OF HIGH-SPEED DATA SERVICES (HSDS)
                            FEATURES AND REQUIREMENTS

The I(3)S HSDS includes:

     o    Data Network services that provide transport and peering functions to
          the global Internet, including, without limitation:

               o    A broadband access network on MDU properties composed of one
                    or more headend reference nodes, a coaxial or hybrid fiber
                    coaxial (HFC) cable television distribution system and one
                    or more cable data modems (CDM);

               o    A local loop network that connects the headend reference
                    node on each MDU property to the I(3)S regional
                    point-of-presence (POP) in each metropolitan area served by
                    I(3)S;

               o    A regional point-of-presence network that connects the POP
                    to the i3s.net national Internet backbone;

               o    A national Internet backbone consisting of broadband
                    communication facilities for the transport of data among
                    I(3)S POPs and public and private Exchange Points where data
                    and Internet routing information will be exchanged with
                    other networks peered with i3s.net;

               o    A national Network Operations Center (NOC).

     o    Certain computer services that include.

               o    Membership system for user authentication and authorities;

               o    Personalization services for customizing content to user
                    preferences;

               o    Internet mail (SMTP and POP3);

               o    Internet newsgroups (NNTP) composed of approximately 25,000
                    newsgroups;

               o    Internet World Wide Web (HTTP) services;

               o    Internet chat (IRC and MIRC);

               o    White-pages-style directory services;

               o    Internet locator services;

               o    Conferencing and collaboration bridges;

               o    Streaming multimedia services such as Microsoft's NetShow
                    and Progressive Network's RealMedia;

               o    Electronic commerce services.

     o    A branded suite of client software that include:

               o    Web browser;

               o    Mail reader;

               o    News reader;

               o    Chat client;

               o    Conferencing and collaboration client;

               o    Appropriate plug-ins and ActiveX controls.

     o    Certain customer service functions that include:

I(3)S / GTE Media Ventures Exhibits                                 Confidential

<PAGE>   25

               o    A National Customer Care Center;

               o    A telephone and network-based customer help desk;

               o    A Trouble Reporting facility;

               o    A customer billing system.

     o    Certain multimedia-rich content that showcases the capabilities of
          HSDS that includes:

               o    Original content created by I(3)S;

               o    Aggregated content created by others but licensed by I(3)S
                    and improved for uses in a HSDS system;

               o    Aggregated content created by others but licensed by I(3)S
                    and used unimproved.

I(3)S / GTE Media Ventures Exhibits                                 Confidential

<PAGE>   26

                                    EXHIBIT E
INTRODUCTION

              This Exhibit entitled "Service Level Agreement" ("SLA") sets out
              operation specifications and requirements for HSDS provided by
              I(3)S for the residents or customers of GTE Media Ventures
              Incorporated (herein sometimes called "Teaming Associate"). The
              SLA shall encompass data services originating and terminating
              within the I(3)S internetwork ("i3s.net").

              The HSDS provided by I(3)S shall meet the operations specification
              and requirements stated herein, which are generally stated in
              terms of events or outcomes, rather than terms of specific
              hardware, software or procedural requirements. For the purposes of
              the SLA, i3s.net shall relate to that portion of the global
              Internet operated by I(3)S, originating within end users' customer
              premises and terminating within I(3)S computers or transported and
              peered at a public or private Internet Exchange Point.

              For the purposes of the SLA, a "Trouble" or "Trouble Report" shall
              relate to i3s.net or I(3)S provided services (or resold services),
              but shall exclude customer error, defects in "customer premises
              equipment" ("CPE"), defects in customers' computers, defects in
              distribution coaxial cable, defects in distribution fiber optics
              defects in cable television systems and network problems
              experienced by destination networks at or beyond Internet Exchange
              Points.

PERFORMANCE REQUIREMENTS

              PERCENT CUSTOMER SERVICE ORDER BEGINNING COMMITMENT DATES TIMELY
              MET

                       This parameter is generally indicative of the timely
                       beginning of work on orders from customers for new
                       service or orders to make changes in their existing
                       service.

                       The timely beginning parameter is calculated by dividing
                       the total Customer Service Orders begun on or before the
                       date and clock hour promised to the customer that the
                       service order would be started by the total number of
                       service orders initiated in each calendar month and
                       multiplying by 100.

                       I(3)S shall exhibit greater than 90% Customer Service
                       Order Beginning Commitment Dates Timely Met per month.

              PERCENT CUSTOMER SERVICE ORDER COMPLETION COMMITMENT DATES TIMELY
              MET

                       This parameter is generally indicative of the timely
                       completion of work on orders from customers for new
                       service or orders to make changes in their existing
                       service and the timely completion of those service
                       orders.

                       The timely completion parameter is calculated by dividing
                       the total Customer Service Orders completed on or before
                       the date and clock hour promised to the customer that the
                       service order would be completed by the total number of
                       service orders initiated in each calendar month and
                       multiplying by 100.

                       I(3)S shall exhibit greater than 90% Customer Service
                       Order Completion Commitment Dates Timely Met per month.

                                                         Service Level Agreement
                                                                     Page 1 of 4

<PAGE>   27

              PERCENT OF NETWORK AVAILABILITY

                       This parameter is generally indicative of the
                       availability of the network to transport and peer
                       customer data at an Internet Exchange Point, or, in the
                       event that the customer data is to be fulfilled by
                       computers within i3s.net, generally indicative of the
                       availability of to transport data to the I(3)S servers
                       and the availability of the servers.

                       This parameter is calculated by dividing the number of
                       seconds that the network is available for each customer
                       by the total number of customer-seconds in each calendar
                       month and multiplying by 100.

                       Specifically excluded from the Network Availability
                       calculation shall be regularly scheduled maintenance
                       windows or ad hoc maintenance windows scheduled and
                       announced 24 hours in advance in the i3s.net Customer
                       Support Web Site.

                       Specifically excluded from the Network Availability
                       calculation shall be periods of time where the cable
                       television distribution plant (operated by the Teaming
                       Associate or its designated third party operator) exceed
                       the follow table of acceptable values:

<TABLE>
<S>                                         <C>
Amplitude Variation Inband Upstream         1 dB/MHz., 5 dB total
---------------------------------------------------------------------------
Amplitude Variation Inband Downstream       1 dB/MHz., 5 dB total
---------------------------------------------------------------------------
Group Delay Variation Inband Upstream       200 nsec./MHz., 800 nsec. total
---------------------------------------------------------------------------
Group Delay Variation Inband Downstream     60 nsec./MHz., 240 nsec. total
---------------------------------------------------------------------------
Tap to Tap Level Variation                  <27 dB
---------------------------------------------------------------------------
</TABLE>

                       I(3)S shall exhibit greater than 98% Network Availability
                       per month.

              PERCENT CUSTOMER CALLS ANSWERED within 45 Seconds by I(3)S
              PERSONNEL

                       This parameter is based upon the number of customers
                       calls answered within 15 seconds by a human operator or
                       by an ACD queue greeting during the hours of operation of
                       the I(3)S National Customer Care Center and thereafter to
                       be answered by a customer representative with 30 seconds.
                       At a minimum, the I(3)S National Customer Care Center
                       shall operate from 8:00 a.m. to 5:00 p.m. Central Time,
                       Monday through Friday exclusive of holidays.

                       This parameter is calculated by dividing the number of
                       calls answered with 45 seconds by the total number of
                       calls answered seconds in each calendar month and
                       multiplying by 100.

                       I(3)S shall exhibit greater than 90% of Customer Calls
                       Answered within 45 Seconds per month.

              PERCENT OF TROUBLE REPORTS RESOLVED TIMELY

                       This parameter is related to the number of Trouble
                       Reports resolved within the following windows:

                           o  For Trouble Reports received by I(3)S at the I(3)S
                              National Customer Care Center prior to 2:00 p.m.
                              Central Time, Monday through Friday, excepting
                              holidays, will be cleared by the end of the next
                              business day.

                                                         Service Level Agreement
                                                                     Page 2 of 4

<PAGE>   28

                           o  For Trouble Reports received by I(3)S at the I(3)S
                              National Customer Care Center after 2:00 p.m.
                              Central Time, Monday through Friday, excepting
                              holidays, will be cleared by noon of the second
                              business day thereafter.

                       This parameter is calculated by dividing the total
                       trouble reports cleared on or before the date and clock
                       hour promised to the customer the total number of Trouble
                       Tickets cleared in each calendar month and multiplying by
                       100.

                       I(3)S shall exhibit greater than 90% Trouble Reports
                       Cleared Timely per month, according to the terms of this
                       section for trouble that can be resolved by I(3)S alone.

              PERCENT CUSTOMER REPAIR VISIT APPOINTMENTS MET

                       This parameter is related to the customer commitments
                       made by the I(3)S National Customer Care Center for
                       repairs that require a repair visit to customers' sites
                       or premises.

                       This parameter is calculated by dividing the total
                       Customer Repair Visits Appointments met on or before the
                       date and clock hour promised to the customer by the total
                       number of Customer Repair Visit Appointments initiated in
                       each calendar and multiplying by 100.

                       I(3)S shall exhibit greater than 90% Customer Repair
                       Commitment Met per month.

              PERCENT OF CUSTOMER BILLS PREPARED TIMELY

                       This parameter is related to the generation of Customer
                       Bills for delivery to customers by mail, electronic mail
                       or credit card billing.

                       This parameter is calculated by dividing the number of
                       Customer Bills generated and sent to customers within
                       twenty (20) business days of the end of the billing cycle
                       by the total number Customer Bills generated in each
                       calendar month and multiplying by 100.

                       I(3)S shall exhibit greater than 95% Customer Bills
                       Prepared Timely per month.

              PERCENT OF CUSTOMER BILLS PREPARED ACCURATELY

                       This parameter is related to the accuracy of Customer
                       Bills for delivery to customers by mail, electronic mail
                       or credit card billing.

                       This parameter is calculated by dividing the number of
                       Customer Bills generated that do not require an
                       adjustment due to a billing error caused I(3)S by the
                       total number Customer Bills generated in each calendar
                       month and multiplying by 100.

                       I(3)S shall exhibit greater than 95% Customer Bills
                       Prepared Accurately per month.

REPORTS

              I(3)S shall undertake commercially reasonable efforts to provide
              to Teaming Associates reports within twenty (20) business days of
              the end of each calendar month, the reports listed below in this
              section, each of which may be provided separately or provided on a
              consolidated basis:

                                                         Service Level Agreement
                                                                     Page 3 of 4

<PAGE>   29

                       A report depicting total subscribers, gross new customers
                       and gross customers terminated separated by product tier
                       and property.

                       New service orders, Trouble Reports opened and closed or
                       cleared as appropriate separated by date and property.

                       Aggregate I(3)S National Customer Care Center data
                       depicting the distribution of call waiting time in
                       general and the percent calls answered and calls
                       abandoned respectively.

                       Billing summaries describing the date(s) bills were sent
                       to customers, and the billed revenue disaggregating major
                       categories of service.

HOLIDAYS

              New Years Day

              Memorial Day

              Independence Day

              Labor Day

              Thanksgiving

              Day after Thanksgiving

              Christmas

              And any other holiday recognized by I(3)S

                                                         Service Level Agreement
                                                                     Page 4 of 4

<PAGE>   30

                                    EXHIBIT F

                  HSDS INITIAL SUBSCRIBER RATES, SERVICE LEVELS
                     AND INSTALLATION AND EQUIPMENT CHARGES

Initial Subscriber charges shall be:

<TABLE>

<S>                                                              <C>
         64 kb/s contention-based non-burstable                  $29.95 per month
         1.00 mb/s contention-based burstable                    $39.95 per month
         1.54 mb/s contention-based with reserved bandwidth      $79.95 per month

         Small office, home office (SOHO)                        $500.00 per month
         Vanity DNS hosting                                      $100.00 per month

         Installation fee                                        $99.00 non-recurring
         Network interface card (NIC)                            market price (assumed to be $60)

         LanCity LCp cable modem purchase                        $395.00 non-recurring
         Monthly rental of LCp                                   initially $10.00 per month
</TABLE>

I(3)S / GTE Media Ventures Exhibits                                 Confidential

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