Document:

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                                                                   EXHIBIT 10.26

   Confidential Materials omitted and filed separately with the Securities and
                Exchange Commission. Asterisks denote omissions.

                                                                        Ricochet

                     RICOCHET(TM) CHANNEL PARTNER AGREEMENT
                                       FOR
                          AUTHORIZED SERVICE PROVIDERS

     THIS RICOCHET(TM) CHANNEL PARTNER AGREEMENT FOR AUTHORIZED SERVICE
PROVIDERS (THE "AGREEMENT") is made as of the 1ST DAY OF SEPTEMBER, 2000 (the
"Effective Date") by and between METRICOM, INC., a Delaware corporation
("METRICOM"), and GOAMERICA COMMUNICATIONS CORPORATION, a Delaware corporation
("AUTHORIZED SERVICE PROVIDER" or "ASP") with its principal offices at 401
Hackensack Avenue, Hackensack, New Jersey 07601 (together, the "Parties").

                                    RECITALS

     WHEREAS, Metricom has developed a proprietary wireless, mobile Internet
access service that Metricom intends to market under the name Ricochet(TM) (the
"SERVICE") as more fully defined and attached as EXHIBIT A hereto; and

     WHEREAS, Metricom desires to appoint ASP as a non-exclusive reseller of the
Service in the Territory (as hereinafter defined), and ASP wishes to accept such
appointment, all pursuant to the terms and conditions set forth in this
Agreement;

     NOW, THEREFORE, in consideration of the mutual covenants, promises,
representations and warranties set forth herein, the parties hereby agree as
follows:

                                    AGREEMENT

1. DEFINITIONS. Unless the context clearly requires otherwise, each of the
following terms, when used herein with initial capitals, shall have the meaning
set forth for such term below:

     1.1 "AFFILIATE" means, when used with respect to one of the Parties hereto,
any legal entity or entities controlling, controlled by, or under common control
with a party to this Agreement. The term "control" as used in the immediately
preceding sentence means the right to the exercise, directly or indirectly, of
more than fifty percent (50%) of the voting rights attributable to the shares,
partnership interests, membership shares, or other similar evidences of
ownership of such controlled party.

     1.2 "ASP SUBSCRIBER" means a Subscriber who has been registered for the
Service by the ASP or by any ASP Reseller in accordance with this Agreement.

     1.3 "GSA" means a Geographical Service Area defined as a city, together
with nearby communities that have a high degree of economic and social
integration with that city, including suburban areas generally considered part
of the same metropolitan area. The population covered within each GSA will be at
least as large as set forth on EXHIBIT B.

     1.4 "MARKET LAUNCH SCHEDULE" means the schedule according to which Metricom
intends to deploy the network through which Metricom will provide the Service.

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Metricom Initials:                                                                            GoAmerica Initials:
                  ------------                Confidential & Proprietary                                          ------------
                                    Not for use or disclosure outside of Metricom or
                                       Contractor except under written permission
</TABLE>

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  Confidential Materials omitted and filed separately with the Securities and
                Exchange Commission. Asterisks denote omissions.

     1.5 "MARKS" means trademarks, service marks, logos, and trade names,
whether or not registered.

     1.6 "NETWORK COVERED AREA" means that portion of the GSA to be covered by
the network (including the square miles set forth in the Market Launch
Schedule).

     1.7 "NON-COMPETE CUSTOMERS" means [**]., or their respective affiliates.

     1.8 "PROMOTIONAL MATERIALS" means promotional publications, documents,
software, equipment or other marketing collateral prepared or disseminated by
Metricom in connection with its efforts to promote the Service to Subscribers.

     1.9 "RESELLER" means any third party to whom ASP has granted the right to
resell the Service to end users pursuant to SECTION 3.2.

     1.10 "SERVICE YEAR" means a twelve-month period commencing upon the date
that the Service is first ready for commercial operation in Phase I GSAs as
determined by Metricom and communicated in writing to ASP and each anniversary
thereof.

     1.11 "SUBSCRIBER" means a single, individual end user of the Service.

     1.12 "SUBSCRIBER DOCUMENTATION" means documentation prepared and
disseminated by Metricom (in hard copy, electronic and/or online form) for use
by Subscribers and ASP's sales and support organizations regarding the proper
installation, set-up, troubleshooting and operation of the Service.

     1.13 "TERRITORY" means the fifty (50) states of the United States of
America and Canada.

     1.14 "TOTAL NET CUMULATIVE SUBSCRIBERS (TNCS)" means the total number of
ASP Subscribers registered in accordance with this Agreement as of any given
date, less the number of ASP Subscribers that have canceled their subscriptions
to the Service prior to such date.

     1.15 "UNRESTRICTED ACCESS" means the ability to access and use the Service
anywhere in the Territory where the Service is then-currently available.

2.   RESALE OF THE SERVICE.

     2.1 APPOINTMENT. Metricom hereby appoints ASP, and ASP hereby accepts
appointment, as Metricom's non-exclusive reseller of the Service in the
Territory. In connection therewith, ASP will identify, register, and provide
sales support and customer support to ASP Subscribers in accordance with this
Agreement.

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                                       Contractor except under written permission
</TABLE>

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     2.2 NATURE OF APPOINTMENT. ASP understands that, subject to SECTION 2.3,
this appointment is non-exclusive and that Metricom will establish other means
of distribution, appoint other distributors and resellers, and/or use its own
direct sales personnel to identify, register and support Subscribers and to
promote the Service. Similarly, Metricom understands that ASP may market, sell
and distribute services similar or identical to the Service, whether provided
directly by ASP or a third party.

     2.3 LIMITED NON-COMPETE. Notwithstanding the non-exclusive nature of this
Agreement, ASP is expressly prohibited from directly or indirectly selling the
Service to Non-Compete Customers unless ASP receives written authorization from
Metricom expressly granting permission to do so.

     2.4 METRICOM RIGHTS. Nothing in this Agreement will be construed in any way
to limit Metricom's right to do either or both of the following at any time in
Metricom's sole discretion: (i) reject or terminate the subscription of any ASP
Subscriber that is in violation of the applicable terms of service and/or (ii)
subject to SECTION 2.2, enter into arrangements of any kind whatsoever with
other parties regarding the marketing and distribution of the Service.

     2.5 ASP RIGHTS. Nothing in this Agreement will be construed in any way to
limit ASP's right to enter into similar or dissimilar contracts with third
parties regarding similar services.

     2.6 ADDITIONAL SERVICES. Metricom may develop and offer at its sole
discretion for resale by ASP, other services that enhance or complement the
Service. ASP will have the option, but not the obligation, to buy any additional
services from Metricom at prices and terms to be negotiated in good faith by the
Parties.

3.   DUTIES OF ASP.

     ASP will have the following duties during the term of this Agreement:

     3.1 PROMOTION AND SALES. ASP will use commercially reasonable efforts to
actively endorse, promote and sell the Service (including subscription renewals)
in the Territory and will devote personnel and resources to effectively promote
the Service as contemplated herein. ASP will identify and register ASP
Subscribers in accordance with this Agreement. ASP will not specifically direct
promotional activities at existing Subscribers of Metricom or another authorized
service provider of Metricom so as to encourage them to discontinue their
then-current subscriptions and become ASP Subscribers. ASP will perform its
duties hereunder in a diligent and businesslike manner and will refrain from any
activity or action that would reasonably be expected to damage the reputation of
Metricom or the Service.

     3.2 ASP RESELLERS. ASP may grant to third parties the right to resell the
Service ("RESELLER") to end users only, provided that (i) ASP will retain the
same obligations with regard to ASP Subscribers registered by Resellers that ASP
has with respect to ASP Subscribers registered by ASP under this Agreement and
(ii) ASP shall remain fully liable and accountable for any and all acts or
omissions of any such Resellers and of persons either directly or indirectly
employed by Reseller.

     3.3 TERMS OF USE. ASP shall, and shall cause its Resellers to, enter into a
written agreement with each of their respective Subscribers which is applicable
to each ASP Subscriber's use of the Service, which includes terms substantially
similar to and at least as restrictive as those set forth on EXHIBIT D, subject
to changes mutually agreed to in writing by ASP and Metricom, and provides at
least as much protection of Metricom's proprietary rights (including Metricom's
intellectual property rights) as this Agreement. At Metricom's request, ASP
agrees that it shall immediately terminate the subscription of any ASP
Subscriber who has breached its subscriber agreement with ASP.

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                                    Not for use or disclosure outside of Metricom or
                                       Contractor except under written permission
</TABLE>
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   Confidential Materials omitted and filed separately with the Securities and
                Exchange Commission. Asterisks denote omissions.

     3.4  MATERIALS FOR SUBSCRIBERS.

          (A) PROMOTIONAL MATERIALS. To support ASP's sales efforts, Metricom
shall prepare and disseminate printed or electronic copies of the Promotional
Materials. Metricom reserves the right to limit the volume of material available
without charge. Metricom grants the non-exclusive rights to reproduce,
distribute and display any materials provided by Metricom in electronic format
provided that ASP will cause all copies of the Promotional Material to contain
the same and all copyright or proprietary legends contained in the original
Promotional Material. ASP will have the option to distribute to prospective
Subscribers any Promotional Materials provided by Metricom to ASP. All
Promotional Materials prepared by Metricom will be consistent with industry
standards. Metricom requires that ASP and ASP's Resellers discontinue
reproduction, distribution and display of any Promotional Materials upon written
notice from Metricom of any change rendering the Promotional Materials obsolete.
Metricom will use its reasonable efforts to provide ASP [**] written notice of
such change and shall reimburse ASP for the cost of any Promotional Materials
purchased by ASP from Metricom within [**] prior to the date of such notice.

          (B) SUBSCRIBER DOCUMENTATION. Metricom will prepare and deliver to
ASP the Subscriber Documentation. ASP will make available the then-current
version of the Subscriber Documentation (as identified by Metricom) to all ASP
Subscribers. Metricom hereby grants ASP a nonexclusive, nontransferable, license
without right of sublicense in the Territory, to (i) reproduce, distribute and
display the Subscriber Documentation in connection with its obligations under
this Agreement and (ii) modify the Subscriber Documentation solely as necessary
to incorporate the Subscriber Documentation into documentation prepared by ASP
for ASP Subscribers ("ASP SUBSCRIBER Documentation"), provided that ASP does not
alter or modify any substantive provision of the Subscriber Documentation
without the prior written consent of Metricom. Notwithstanding the foregoing,
ASP may sublicense to ASP's Resellers a nonexclusive, nontransferable, license
in the Territory to reproduce, distribute and display the Subscriber
Documentation and ASP Subscriber Documentation to ASP Subscribers. ASP shall
cause all copies of the Subscriber Documentation or modified version thereof
pursuant to this SECTION 3.3(b), to contain the same and all copyright or
proprietary legends contained in the original Subscriber Documentation.

          (C) OWNERSHIP AND INTELLECTUAL PROPERTY. ASP and ASP Resellers
acknowledge and agree that Metricom is and shall remain the sole owner of the
Promotional Material, Subscriber Documentation and all Marks contained in such
materials except to the extent that ASP Subscriber Documentation contains any
ASP or ASP Reseller Marks, which shall remain the exclusive property of ASP or
ASP Reseller, respectively. Nothing herein will be construed as granting to ASP
or any Reseller any proprietary rights (including any intellectual property
rights) to any Promotional Materials, Subscriber Documentation or any Marks
therein.

     3.5 BILLING; CUSTOMER BILLING INFORMATION. ASP shall provide customer
billing and collection services for ASP Subscribers.

          (A) ASP shall provide to Metricom, on a monthly basis, the billing
address, including Subscriber name and nine-digit zip code, for each ASP
Subscriber and any Subscriber billing address changes. Billing address changes,
along with the previous address, shall be clearly identified as such. Where a
Reseller represents the ASP, the ASP will set up a reasonable procedure to
capture and transmit billing information and billing address changes on a
monthly basis.

     3.6 NO OTHER WARRANTIES. ASP is not entitled to any representations,
warranties or guarantees concerning the Service other than the warranties
provided by Metricom to ASP under this Agreement.

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                                       Contractor except under written permission
</TABLE>

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ASP will not, without Metricom's prior express written consent, make any
representations, warranties or guarantees concerning the Service other than the
warranties provided by Metricom to ASP hereunder.

     3.7 CUSTOMER SUPPORT. ASP or the applicable Reseller is responsible for all
interaction with its prospects and Subscribers which shall include, but not be
limited to, the following:

          (A) SALES SUPPORT. ASP or the applicable Reseller will provide sales
support to ASP Subscribers in a diligent manner consistent with industry
standards, which will include the following: (i) responding to questions from
ASP Subscribers about the features and prices of the Service; (ii) introducing
ASP Subscribers to new features of the Service and new services as such become
available; (iii) producing and processing all ASP Subscriber and prospective
Subscriber orders; (iv) customer billing issues; (v) account setup and
maintenance; and (vi) providing such other sales support as Metricom may, from
time to time, reasonably request.

          (B) SERVICE SUPPORT. ASP or the applicable Reseller will, in a
diligent manner consistent with industry standards, provide Level I Service
Support, as defined in EXHIBIT C attached hereto, to ASP Subscribers. If ASP or
the applicable Reseller is not able to sufficiently address an ASP Subscriber's
support request because of its technical nature, ASP may request assistance from
the Metricom service support department as provided in EXHIBIT C.

               (I) ASP shall be responsible for providing Level II and Level III
Service Support to its Resellers.

     3.8  TRAINING.

          (A) SALES SUPPORT. Metricom will provide to ASP's qualified sales
trainers and sales managers initial sales training for the Service as set forth
in SECTION 4.3. Thereafter, ASP will be responsible for providing ongoing and
additional training of all ASP sales personnel subject to reasonable
requirements established by Metricom. Metricom may from time to time, at its
sole discretion, verify compliance with such requirements through routine
testing and other forms of verification. Failure to remove untrained or
improperly trained personnel from selling the Service until ASP has trained them
to Metricom's requirements will be considered a material breach of ASP's
obligations under this Agreement, subject to termination as set forth in
SECTION 7.

          (B) SERVICE SUPPORT. Metricom will provide initial service support
training as set forth in SECTION 4.5 to ASP qualified customer support trainers
and customer support managers. Thereafter, ASP will be responsible for training
its customer support personnel working with the Service and modem hardware
("CUSTOMER SUPPORT"). ASP shall cause its Customer Support to attend a certified
training program, as designed by Metricom, and pass reasonable certification
requirements established by Metricom. ASP shall use only a certified customer
support trainer, as determined by Metricom, to conduct its training sessions.
Metricom may from time to time, at its sole discretion, verify compliance with
such requirements through routine testing and other forms of verification.
Failure to remove untrained, or improperly trained personnel from supporting the
Service until ASP has trained them to Metricom's requirements will be considered
a material breach of ASP's obligations under this Agreement subject to
termination as set forth in SECTION 7.

          (C) In the event of any significant change in the Service after the
initial sales support and service support training, Metricom agrees to provide
training (which may be conducted remotely or consist of "train the trainer"
sessions) for such change at no additional charge to ASP.

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                                       Contractor except under written permission
</TABLE>
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     3.9 COMPLIANCE WITH LAWS. In performing its duties under this Agreement,
ASP will at all times comply with all applicable federal, state, and local laws
and will not engage in any illegal or unethical practices.

     3.10 BRANDING. The Service shall be branded and marketed by Metricom and
shall be co-branded by ASP (or its Resellers). ASP and all of its Resellers will
display the Ricochet(TM) brand, in a manner visible to their respective
Subscribers, on the modem connection window, in documentation distributed to any
ASP Subscribers and on any sales support documents prepared by ASP or any
Reseller, provided that ASP's (or the applicable ASP Reseller's) brand may be
the primary brand visible to ASP Subscribers. Metricom will work with ASP and
each Reseller in good faith to ensure that ASP's or the applicable Resellers'
brand has prominence in any and all materials made available to ASP Subscribers.
ASP is also expected to use the co-branded mark in Promotional Materials for
prospects including advertising and direct marketing. As partial consideration
for this obligation of ASP and its Resellers, Metricom agrees that it shall
impose co-branding obligations on any other resellers of the Service
substantially similar to those imposed on ASP and its Resellers herein.

     3.11 INTERNET AND LAN ACCESS. ASP agrees to provide a competitively priced
and featured Internet access service and/or LAN access services to Subscribers.
ASP agrees to promote the Service as a means of connecting to or through its
Internet and LAN access services.

     3.12 NETWORK INTERCONNECT. ASP, at its sole expense, shall provide the
connection to the Ricochet(TM) network in accordance with Metricom's
specifications. Metricom will, at ASP's expense, provide operations and
engineering teams, to assist in the network interconnect design and installation
which would enable ASP to connect Subscribers to the Service. The cost and
details of the network interconnect will be established under a separate
agreement between the Parties.

     3.13 STANDARD SERVICE LEVEL AGREEMENT. ASP shall minimum performance
commitments for the network connection and customer service levels and response
times as set forth in EXHIBIT H attached hereto.

     3.14 FLAT RATE PRICING. ASP agrees to sell the Service to end users and to
require its Resellers to sell the Service to end users at a flat rate,
non-metered price.

     3.15 MODEM PURCHASE AGREEMENT COMMITMENT. ASP agrees to enter in to at
least one (1) separate agreement with a Metricom authorized modem manufacturer
for the purpose of purchasing, selling, distributing and supporting modems for
connection to the Service to Resellers and Subscribers. To the extent reasonably
requested by Metricom, ASP will provide projected sales and corresponding modem
requirements for ASP and Reseller Subscribers to Metricom and/or its existing or
potential equipment and services vendors.

     3.16 BUSINESS MANAGEMENT SYSTEM INTERFACE. ASP will develop, at its
expense, an internal system which shall interface with Metricom's Business
Management System, as described in Exhibit F attached hereto, for the purpose of
managing ASP Subscriber accounts. ASP will be responsible for (i) any necessary
modifications or enhancements to such internal systems to interface with
Metricom's information systems; (ii) internal training on use of the system; and
(iii) account management of the system. Upon request by ASP and provided ASP is
using Metricom's standard system, Metricom will assist ASP with its internal
training.

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                                       Contractor except under written permission
</TABLE>

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  Confidential Materials omitted and filed separately with the Securities and
                Exchange Commission. Asterisks denote omissions.

4.   DUTIES OF METRICOM.

     4.1 SERVICE TO SUBSCRIBERS. Metricom will provide the Service to the ASP in
accordance with the service performance standards set forth in EXHIBIT E (the
"QUALITY OF SERVICE"). To the extent that Metricom does not maintain the
Performance Quality of Service for [**] percent ([**]%) or greater of the ASP
Subscribers or the Network Uptime Quality of Service [**] percent ([**]%) of the
time over the course of a calendar month for a specific GSA, ASP's payment
obligations under SECTION 6.1 for the affected GSA shall be reduced pro rata for
the amount of time and the number of ASP Subscribers within the affected GSA
that the Quality of Service commitment is not met during the relevant month.
Metricom shall have [**] following written notice from ASP to bring the Service
for the affected GSA back into conformance with EXHIBIT E. If, following such
[**] period, the Affected Percentage (as defined below) is less than [**]
percent ([**]%) of the covered population in the affected GSA, ASP's payment
obligations under SECTION 6.1 for the affected GSA shall be reduced by a
percentage equal to [**] during the period in which the Service for the affected
GSA is not in conformance with EXHIBIT E. If, following such thirty day period,
the Affected Percentage is [**] percent ([**]%) or greater of the covered
population in the affected GSA, ASP shall have no payment obligations under
SECTION 6.1 for the affected GSA during the period in which the Service for the
affected GSA is not in conformance with EXHIBIT E. If, following such [**]
period, the Affected Percentage is greater than [**] percent ([**]%) of the
covered population in the affected GSA for any period of [**] or for any period
of [**] during any Service Year, ASP shall have the option, which expires after
[**] days from the date that such period ends, of terminating this Agreement
pursuant to SECTION 8.3. For the purposes of this SECTION 4.1, the "AFFECTED
PERCENTAGE" means the total population in the affected GSA covered by the
Service for which Metricom has not satisfied its Quality of Service obligations
under this SECTION 4.1, divided by the total covered population of the affected
GSA in which the Service is offered.

     4.2 SALES SUPPORT. Metricom will supply co-branded advertising and
promotion in order to support ASP's sales effort.

     4.3 SALES SUPPORT TRAINING. Metricom will supply sales training to
qualified ASP Sales Trainers and Sales Managers. Such sales training shall
include (i) a general overview of Metricom, the ASP program, the industry and
marketplace, the modem, and the Service; and (ii) information on how to
competitively position the Service, target desired end users by understanding
their needs and how the Service fills that need.

     4.4 SERVICE SUPPORT FOR THE SERVICE. If ASP or the applicable Reseller is
not able to adequately resolve a technical support request regarding the
Service, ASP may request assistance from Metricom, which assistance will be
provided directly to ASP but not directly to any Reseller or ASP Subscriber. ASP
or the applicable Reseller may only refer an ASP Subscriber directly to the
Metricom technical service department with Metricom's prior approval. Metricom
will, in a diligent manner consistent with industry standards, supply Level II
and Level III Service Support to ASP as set forth on EXHIBIT C.

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  Confidential Materials omitted and filed separately with the Securities and
                Exchange Commission. Asterisks denote omissions.

     4.5 SERVICE SUPPORT TRAINING. Metricom will supply (i) initial technical
support training to qualified ASP customer support trainers and customer support
managers; (ii) training materials to be utilized in training additional ASP
customer support employees; and (iii) updated product information and support
materials. Metricom may provide additional training upon request by ASP at a
mutually agreed upon price. Initial technical support training shall include (i)
a general overview of Metricom, the ASP program, the industry and marketplace,
the modem and the Service; and (ii) a technically oriented program encompassing
the Ricochet network, the modem, accessories and troubleshooting from a support
technician's point of view. Such program assumes a background and understanding
of the Internet and networking in general by the trainees.

     4.6  NETWORK DEPLOYMENT.

          (A) Metricom will deploy the network infrastructure necessary to
provide the Service substantially in accordance with its Market Launch Schedule.

          (B) If the Market Launch Schedule is delayed or Metricom's actual
deployment of the network infrastructure necessary to provide the Service occurs
more slowly than called for by the Market Launch Schedule and if such delay
exceeds [**], the ASP shall have the option to terminate this Agreement under
SECTION 8.

     4.7 COMPLIANCE WITH LAWS. In performing its duties under this Agreement,
Metricom will at all times comply with all applicable federal, state, and local
laws and will not engage in any illegal or unethical practices.

     4.8 BUSINESS MANAGEMENT SYSTEM. Metricom will provide a set of applications
("BUSINESS MANAGEMENT SYSTEM"), as described in EXHIBIT F attached hereto, to
ASP for the purpose of managing ASP Subscriber accounts.

     4.9 MODEM TECHNOLOGY LICENSING COMMITMENT. Metricom has licensed the
Ricochet(TM) compatible modem technology to one or more manufacturers for the
purpose of producing a supply of Service compatible modems.

5.   RATES; VOLUME; DISCOUNT

     5.1  RATES

          (A) Prior to such time that Metricom, as determined solely by
Metricom, has deployed the network to the extent that coverage is provided to a
total of [**] million ([**]) potential end users ("Commitment Date"), ASP shall
be invoiced for the ASP Subscribers activated prior to the Commitment Date
("Pre-Commitment Date Subscribers") at the Discount Rate set forth in Exhibit G,
Table B, irrespective of the actual number of Pre-Commitment Date Subscribers.
The rates for Pre-Commitment Date Subscribers will not increase for the term of
the Agreement, except as set forth herein. ASP shall be invoiced for
Pre-Commitment Date Subscribers in accordance with SECTION 6.1.

          (B) The rates and pricing rules set forth in SECTION 5.2 will apply
the first day of the quarter following the Commitment Date.

     5.2  VOLUME; DISCOUNT

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          (A) Subscriber Rate discount ("Discount Rate") provided to ASP is
based upon the assumption that ASP's Total Net Cumulative Subscribers ("TNCS")
at the end of each year period will meet or exceed the ASP Subscriber Objectives
set forth in Table A ("Yearly Subscriber Objective"). Pre-Commitment Date
Subscribers will not be included in the TNCS calculations for purposes of 5.2.

          (B) The parties have agreed upon the fixed schedule set forth in
Exhibit G, Table C, setting forth ASP's Subscriber Objective by quarter for each
year period ("Quarterly Subscriber Objective"). The sum of ASP's Quarterly
Subscriber Objectives for any given year period shall meet or exceed ASP's
Yearly Subscriber Objective for that year period as set forth in Exhibit G,
Table A. Such schedule may be changed only upon express mutual agreement.

          (C) Except for Pre-Commitment Date Subscribers, Commencing the first
day of the quarter following the Commitment Date, ASP will be will be invoiced
in accordance with SECTION 6.1 at the Discount Rate set forth in Exhibit G,
Table B. On the last day of each quarter ASP's TNCS for the quarter will be
compared with ASP's Quarterly Subscriber Objective ("Quarterly Reconciliation").
If ASP's TNCS for the quarter meets or exceeds ASP's Quarterly Subscriber
Objective the Discount Rate will apply. If ASP's TNCS for the quarter is less
than ASP's Quarterly Subscriber Objective: (i) ASP will be invoiced an amount
equal to the difference of the Normal Rate and Discount Rate multiplied by the
TNCS as of the last day of the previous quarter minus the TNCS as of the last
day of the current quarter ("Quarterly Adjustment"); and (ii) the Normal Rate
will continue to apply to the ASP Subscribers activated in such quarter, until
such time that ASP's TNCS in the aggregate meets the Quarterly Subscriber
Objective. Quarterly Adjustments will be due net thirty days from invoice.

          (D) In the event that its Market Launch Schedule is delayed or
Metricom's actual deployment of the network infrastructure necessary to provide
the Service occurs more slowly than called for by the Market Launch Schedule,
Metricom and ASP shall work together in good faith to adjust ASP's Yearly
Subscriber Objective by a percentage equivalent to the percentage of the Market
Launch Schedule which was delayed, starting with Year 3, and proceeding to Year
2, if necessary.

          (E) The parties have established the Yearly Subscriber Objectives and
Quarterly Subscriber Objectives as a non-binding forecast for pricing purposes
only. This SECTION 5.2 shall not be construed to obligate ASP to purchase any
specific volume of service from Metricom. ASP's failure to meet any Quarterly
Subscriber Objective or Yearly Subscriber Objective shall not constitute a
breach of this agreement, and ASP shall have no liability for such failure other
than payment of the Quarterly Adjustments and Normal Rate as provided in SECTION
5.2(c).

6.   PRICING AND PAYMENTS.

     6.1 INVOICING, PRICING, AND PAYMENT. Metricom will invoice ASP monthly in
arrears. Bill will be based on the number ASP Subscribers for the number of days
ASP Subscriber was active within ASP's billing cycle. For the purposes of this
SECTION 6.1, the term "ACTIVE" means that the ASP Subscriber's modem has been
assigned to an ASP gateway and is capable of talking through the Service. The
monthly fees for ASP Subscribers are set forth in the table attached hereto as
EXHIBIT G and includes ROW Fees. ASP will make each monthly payment to Metricom
not later than thirty (30) days of the invoice date.

     6.2 REPORTS. Each Metricom invoice will be accompanied by a report prepared
by Metricom stating (i) the number of new ASP Subscribers registered through
ASP's billing date, and (ii) the number of ASP Subscribers whose subscriptions
terminated on or before the ASP's billing date.

<TABLE>
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<S>                                <C>                                                        <C>
Rev. 083000                        GoAmerica Authorized Service Provider Agreement                                Page 9 of 41
Metricom Initials:                                                                            GoAmerica Initials:
                  ------------                Confidential & Proprietary                                          ------------
                                    Not for use or disclosure outside of Metricom or
                                       Contractor except under written permission
</TABLE>
<PAGE>   10
  Confidential Materials omitted and filed separately with the Securities and
                Exchange Commission. Asterisks denote omissions.

     6.3 LICENSES, EXPENSES, AND TAXES. Metricom will obtain and maintain, at
its own expense, right of way and similar licenses, registrations, permits, and
approvals needed for it to deploy its network. ASP (or the applicable Reseller)
will obtain and maintain, at its own expense, any additional licenses,
registrations, permits, and approvals related to the use of the Service by any
ASP Subscriber that Metricom cannot obtain because it is not the contracting
party with the Subscriber. Except as otherwise set forth herein, both Parties
will pay all of its own marketing and advertising costs and all expenses of its
office, employees, and other activities under this Agreement. ASP will be solely
responsible for payment of any and all federal, state and local taxes arising
from or imposed on the payments made by ASP Subscribers to ASP under this
Agreement.

     6.4 ACCESS. The pricing set forth in EXHIBIT G is applicable to each ASP
Subscriber's use of the Service within the Territory. ASP will have no rights to
restrict the territory in which the ASP Subscribers may use the Service.

     6.5 RIGHT OF WAY (ROW) FEES. ASP acknowledges that Metricom, as a function
of its right-of-way agreements with certain municipalities, may owe various
municipalities fees ("ROW FEES") in connection with the use of the Service by
ASP Subscribers. ASP agrees not to disclose the existence or amount of such fees
to ASP Subscribers. Metricom shall be solely liable for all matters related to
any ROW Fees including payment to the appropriate municipalities, provided,
however, that:

          (A) ASP will transmit the Subscriber name and billing address
information at the time of account set up via the information system as
described in EXHIBIT F. Metricom will use the Subscriber billing information for
administration and payment of ROW Fees, and municipal and marketing audit
purposes only.

          (B) In addition, with the permission of the ASP, Metricom may solicit
subscribers' help in lobbying for new or renewal municipal right-of-way
agreements.

          (C) Metricom has the right to increase the monthly fees set forth in
EXHIBIT G, or impose additional rates and charges to the extent of any increases
in ROW Fees or additional rates and charges Metricom is required to pay local
jurisdictions or municipalities effective on January 1st of each calendar year,
provided Metricom has notified ASP on or before the preceding December 1st of
such increase. Such increases may be made not more than once each year and no
annual increase shall exceed [**]percent ([**]%) of the monthly fee in effect at
the time of the increase. In the event that an increase in ROW Fees to other
authorized service providers in any given year is greater than [**] percent
([**]%), Metricom has the right to increase the ROW Fees to ASP in the following
year(s), subject to the [**] percent ([**]%) cap set forth herein, provided that
in no event shall ASP be charged monthly fees higher than any other authorized
service providers with the same level of volume and/or revenue commitments to
Metricom. Each increase shall apply equally to all ASP Subscribers and no
increase shall be apportioned geographically based upon a Subscriber's location.
At any time, Metricom has the right to decrease the monthly fees set forth in
EXHIBIT G, or reduce any rates and charges payable by ASP hereunder to the
extend of any decreases in ROW Fees Metricom is required to pay local
jurisdictions or municipalities. It shall be the policy of Metricom to manage
ROW Fees to balance and not to use ROW Fees as a source of revenue. Metricom and
the ASP will agree and promote the belief that the Service and the ROW Fees
benefit and add value to the covered communities.

          (D) Metricom shall indemnify and hold harmless ASP and its Resellers
from any third-party claims based on Metricom's failure to remit such ROW Fees
to the appropriate municipality.

<TABLE>
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<S>                                <C>                                                        <C>
Rev. 083000                        GoAmerica Authorized Service Provider Agreement                               Page 10 of 41
Metricom Initials:                                                                            GoAmerica Initials:
                  ------------                Confidential & Proprietary                                          ------------
                                    Not for use or disclosure outside of Metricom or
                                       Contractor except under written permission
</TABLE>
<PAGE>   11
     6.6 ANNUAL PRICE REVIEW. The Parties will conduct annual meetings during
the term of this Agreement during which they will discuss whether the parties
should amend the pricing or other terms and conditions set forth in this
Agreement. Except as provided in SECTION 6.5(c), Metricom shall not increase any
prices payable by ASP under this Agreement unless such increase has been
mutually agreed upon in writing by the parties.

7.   CONFIDENTIALITY.

     7.1 For the purposes of this Agreement, "CONFIDENTIAL INFORMATION" means
information about the disclosing party's business or activities that is
proprietary and confidential, which includes all business, financial, technical,
non-technical and other information of a party marked or designated by such
party as "confidential" or "proprietary"; or information which, by the nature of
the circumstances surrounding the disclosure, ought in good faith to be treated
as confidential. Confidential Information also includes proprietary or
confidential information of any third party that may disclose such information
to either party in the course of such party's business.

     7.2 Confidential Information will not include information that (i) is in or
enters the public domain without breach of this Agreement, (ii) the receiving
party lawfully receives from a third party without restriction on disclosure and
without breach of a nondisclosure obligation (iii) is approved for release by
written authorization of the disclosing party (iv) the receiving party knew
prior to receiving such information from the disclosing party or develops
independently without reference to the disclosing party's Confidential
Information as shown by the receiving party's files and records immediately
prior to the time of disclosure or (v) is independently developed by the
receiving party without reference to Confidential Information.

     7.3 By virtue of this Agreement, each party hereto may disclose to the
other any information that is Confidential Information. Such Confidential
Information will be governed by the terms of this SECTION 7. Each party agrees
to use the Confidential Information of the other party solely to the extent
necessary to fulfill its obligations or exercise its rights hereunder, and not
for any other purpose.

     7.4 Each party agrees (i) that it will disclose such Confidential
Information only to its employees, agents, and contractors (including ASP's
Resellers) with a need to know such Confidential Information and who have
obligations of confidentiality not to use such Confidential Information for any
purpose except as expressly permitted hereunder, (ii) that it will not disclose
to any third party or use any Confidential Information disclosed to it by the
other except as expressly permitted in this Agreement, and (iii) that it will
take all reasonable measures to maintain the confidentiality of all Confidential
Information of the other party in its possession or control, which will in no
event be less than the measures it uses to maintain the confidentiality of its
own information of similar importance.

     7.5 Notwithstanding the foregoing, each party may disclose Confidential
Information (i) to the extent required by a court of competent jurisdiction or
other governmental authority or otherwise as required by law, provided that the
receiving party uses reasonable efforts to provide the disclosing party with
prior notice of such obligation to disclose and reasonably assists in seeking a
protective order thereof or (ii) on a "need-to-know" basis under an obligation
of confidentiality to its legal counsel, accountants, banks and other financing
sources and their advisors.

     7.6 Within fifteen (15) days of receipt of a written request for the return
of Confidential Information, all disclosing party's Confidential Information and
all copies thereof in receiving party's possession or control will be returned
to disclosing party or destroyed by receiving party at disclosing party's
instruction. Receiving party will then certify the same in writing and that no
copies have been retained by receiving party, its employees, agents or
contractors.

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Metricom Initials:                                                                            GoAmerica Initials:
                  ------------                Confidential & Proprietary                                          ------------
                                    Not for use or disclosure outside of Metricom or
                                       Contractor except under written permission
</TABLE>
<PAGE>   12
  Confidential Materials omitted and filed separately with the Securities and
                Exchange Commission. Asterisks denote omissions.

     7.7 Each party acknowledges that unauthorized disclosure or use of the
Confidential Information may cause irreparable harm to the other party for which
recovery of money damages would be inadequate, and the other party may therefore
be entitled to seek timely injunctive relief to protect its rights under this
Agreement, in addition to any and all remedies available at law.

     7.8 The terms and conditions of this Agreement will be deemed to be the
Confidential Information of each party and will not be disclosed without the
written consent of the other party.

     7.9 Any ASP Subscriber information including, but not limited to, names,
addresses, ZIP codes, marketing plans, and competitive information, provided by
ASP and its Resellers, to Metricom for the purpose of compliance with local,
state or federal law or for any other purpose, shall be considered Confidential
Information and proprietary to ASP. Metricom will not use such ASP Subscriber
information in any manner that is not expressly permitted under this Agreement
without the express written permission of an authorized ASP employee or in
violation of applicable law or regulation. Notwithstanding the foregoing,
Metricom may use ASP Subscriber information in aggregate form for internal
business purposes provided that Metricom does not use any identifying personal
information. Nothing in this Agreement shall be construed to override or
supersede requirements promulgated pursuant to the Telecommunications Act of
1996 (the "ACT") and lawfully in effect, with respect to the treatment of
Customer Proprietary Network Information (as defined in the Act).

8.   TERM AND TERMINATION.

     8.1 INITIAL TERM AND RENEWAL. The term of the Agreement will commence on
the Effective Date and will continue in full force until the expiration of the
third (3rd) Service Year ("INITIAL TERM") unless earlier terminated in
accordance with SECTION 8.2 or 8.3. The Agreement shall be considered extended
on an annual basis for an additional Service Year, unless either party exercises
it's rights of termination per SECTIONS 8.2, 8.3 or 9.

     8.2 TERMINATION FOR CAUSE BY METRICOM. Metricom will have the right to
terminate this Agreement upon written notice to ASP if ASP breaches any of its
material duties or obligations under provisions of this Agreement and has not
cured such breach within [**] after receipt of written notice thereof.

     8.3 TERMINATION FOR CAUSE BY ASP. ASP will have the right to terminate this
Agreement upon written notice to Metricom if Metricom breaches any of its
material duties or obligations under provisions of this Agreement, and has not
cured such breach within [**] after receipt of written notice thereof.

     8.4 TERMINATION BY MUTUAL AGREEMENT. The Agreement may be terminated
without cause by written consent of both of the parties to the agreement.

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Rev. 083000                        GoAmerica Authorized Service Provider Agreement                               Page 12 of 41
Metricom Initials:                                                                            GoAmerica Initials:
                  ------------                Confidential & Proprietary                                          ------------
                                    Not for use or disclosure outside of Metricom or
                                       Contractor except under written permission
</TABLE>
<PAGE>   13
  Confidential Materials omitted and filed separately with the Securities and
                Exchange Commission. Asterisks denote omissions.

9.   EFFECT OF EXPIRATION OR TERMINATION.

     9.1 END OF AUTHORITY; RETURN OF PROPERTY. Except as expressly provided
herein, upon expiration or termination of this Agreement for any reason, ASP's
and its Resellers' authority to act as a reseller on behalf of Metricom, to
register Subscribers and to use the Marks described in SECTION 10 will
immediately cease. ASP and its Resellers will promptly return to Metricom all
tangible copies of Promotional Materials and Subscriber Documentation in ASP's
or its Resellers' possession or control and delete or erase any electronic
copies, and certify in writing to Metricom that it has fully complied with these
requirements; provided, that ASP or its Reseller as the case may be, may retain
one copy thereof for archival purposes.

     9.2 ASP SUBSCRIBERS. In the event that the term of an ASP Subscriber
agreement with ASP or a Reseller extends beyond the expiration or termination of
this Agreement, this Agreement shall continue in effect to the extent required
to provide Service to such ASP Subscriber(s) for a period of not more than [**]
following the expiration or termination of this Agreement or the expiration of
the last ASP Subscriber agreement, whichever occurs first.

     9.3 SURVIVAL. Notwithstanding anything to the contrary in this Agreement,
SECTIONS 1, 6.1, 6.3, 6.4, 6.5, 7, 8, 9, 10 (except for the trademark license
granted therein), 11, 12, 13, 14 and 15 will survive expiration or earlier
termination of this Agreement.

10.  TRADEMARKS.

     During the term of this Agreement, ASP will have a non-transferable,
non-exclusive right to use the Marks of Metricom, provided that such use is
solely in order to fulfill ASP's obligations under this Agreement. Except for
the limited right to use Metricom's Marks as set forth in this SECTION 10,
nothing in this Agreement will be construed to grant ASP any right, title or
interest in and to Metricom's Marks. ASP acknowledges Metricom's exclusive
ownership of Metricom's Marks and agrees not to take any action inconsistent
with such ownership. ASP will not adopt, use or attempt to register any
trademarks, service marks or trade names that are confusingly similar to the
Metricom Marks. ASP will comply with any written trademark policies or
guidelines concerning use of Metricom's Marks that Metricom furnishes to ASP
from time to time. ASP will provide to Metricom, at no cost to Metricom and
prior to any use, examples of ASP's use of Metricom's Marks and will obtain
Metricom's written approval prior to such use, which approval shall not be
unreasonably withheld, conditioned or delayed. Metricom shall not use ASP's
Marks for any reason without the express written approval of ASP.

11.  INDEPENDENT CONTRACTORS.

     ASP and Metricom are independent contractors. Except in connection with the
acquisition of Subscribers by ASP according to the terms of this Agreement,
neither party will have or represent that it has the right, power or authority
to bind, contract or commit the other party or to create any obligation on
behalf of the other party. This Agreement will not be deemed to create any
agency, partnership, or joint venture between the parties.

12.  INDEMNITY.

     12.1 INDEMNIFICATION BY ASP. ASP will defend, indemnify and hold harmless
Metricom, its affiliates, and their respective officers, directors, employees
and agents from and against all claims,

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Rev. 083000                        GoAmerica Authorized Service Provider Agreement                               Page 13 of 41
Metricom Initials:                                                                            GoAmerica Initials:
                  ------------                Confidential & Proprietary                                          ------------
                                    Not for use or disclosure outside of Metricom or
                                       Contractor except under written permission
</TABLE>
<PAGE>   14
liabilities and expenses asserted by third parties (including reasonable
attorneys fees) to the extent arising out of (i) any breach by ASP of any
warranty made by ASP under this Agreement; (ii) any statement, representation or
warranty made by ASP relating to the Service that (a) was not approved in
advance and in writing by Metricom or (b) differs from the representations and
warranties made by Metricom in the then-current version of the Subscriber
Documentation; or (iii) the negligence or intentional misconduct of ASP or any
of its employees, agents or representatives. THIS SECTION CONSTITUTES METRICOM'S
SOLE AND EXCLUSIVE REMEDY, AND ASP'S SOLE OBLIGATION AND LIABILITY IN THE EVENT
OF ANY THIRD PARTY CLAIM AGAINST METRICOM OF THE TYPE LISTED IN THIS SECTION.

     12.2 INDEMNIFICATION BY METRICOM. Metricom will defend, indemnify and hold
harmless ASP, its affiliates and their respective officers, directors, employees
and agents from and against all claims, liabilities and expenses asserted by
third parties (including reasonable attorneys' fees) to the extent arising out
of:

          (A) the negligence or intentional misconduct of Metricom or any of its
employees, agents or representatives; or

          (B) claims that the Service as delivered by Metricom infringes a
patent, copyright, trade secret or any other intellectual property right of any
third party provided however that Metricom shall have no liability to ASP or any
third party if any alleged infringement or claim of infringement is based upon
(i) any modification of the Service other than by Metricom; (ii) use of the
Service in connection or in combination with equipment, devices, software or
other services not provided by Metricom (if such infringement or claim of
infringement would not have occurred otherwise); or (iii) the use of the Service
other than as permitted under this Agreement or under EXHIBIT D or in a manner
for which it was not intended.

     THIS SECTION CONSTITUTES ASP'S SOLE AND EXCLUSIVE REMEDY, AND METRICOM'S
SOLE OBLIGATION AND LIABILITY IN THE EVENT OF ANY THIRD PARTY CLAIM AGAINST ASP
OF THE TYPE LISTED IN THIS SECTION.

     12.3 The foregoing indemnities are conditioned on the indemnified party (i)
promptly notifying the indemnifying party in writing of such action or claim,
(ii) giving the indemnifying party sole control of the defense thereof and any
related settlement negotiations, provided however, that any such settlement
which imposes injunctive or other equitable relief binding upon the indemnified
party will require the indemnified party's prior written consent (which consent
may be granted or withheld in the sole discretion of the indemnified party), and
(iii) cooperating and, at indemnifying party's reasonable request and expense,
assisting in such defense.

     12.4 Notwithstanding any other provision of this Agreement and except for
Metricom's obligations of indemnification under SECTION 12.2(b), the
indemnifying party's obligations under this Section will not extend to any third
party claims for consequential, indirect, exemplary, special or incidental
damages.

13.  LIMITATION OF LIABILITY.

     IN NO EVENT WILL EITHER PARTY BE LIABLE TO THE OTHER PARTY OR ANY THIRD
PARTY FOR ANY LOST PROFITS, LOSS OF DATA, OR OTHER CONSEQUENTIAL, INDIRECT,
SPECIAL, INCIDENTAL, OR PUNITIVE DAMAGES ARISING FROM OR RELATING TO THIS
AGREEMENT OR THE USE OR PERFORMANCE OF THE SERVICE, EVEN IF SUCH PARTY HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. NEITHER PARTY WILL BE LIABLE TO

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Metricom Initials:                                                                            GoAmerica Initials:
                  ------------                Confidential & Proprietary                                          ------------
                                    Not for use or disclosure outside of Metricom or
                                       Contractor except under written permission
</TABLE>
<PAGE>   15
THE OTHER PARTY FOR DAMAGES SUCH AS COMPENSATION OR DAMAGES FOR LOSS OF PRESENT
OR PROSPECTIVE PROFITS OR REVENUES, LOSS OF ACTUAL OR ANTICIPATED COMMISSIONS,
OR EXPENDITURES OR COMMITMENTS MADE IN CONNECTION WITH THE PERFORMANCE OF
OBLIGATIONS UNDER THIS AGREEMENT. EXCEPT IN CONNECTION WITH THE INDEMNIFICATION
OBLIGATIONS SET FORTH IN SECTION 12 AND ASP'S PAYMENT OBLIGATIONS UNDER SECTION
6, EACH PARTY'S TOTAL CUMULATIVE LIABILITY ARISING FROM OR RELATING TO THIS
AGREEMENT, WHETHER IN CONTRACT, IN TORT, UNDER A THEORY OF STRICT LIABILITY OR
OTHERWISE, WILL BE LIMITED TO THE AGGREGATE AMOUNT PAID TO METRICOM BY ASP UNDER
THIS AGREEMENT DURING THE TWELVE (12) MONTHS PRECEDING THE DATE THE CLAIM AROSE.
METRICOM'S SUPPLIERS WILL HAVE NO LIABILITY OF ANY NATURE TO ASP UNDER THIS
AGREEMENT. EACH PARTY UNDERSTANDS AND AGREES THAT THE LIMITATIONS OF LIABILITY
IN THIS AGREEMENT ARE REASONABLE AND A FUNDAMENTAL PART OF THIS AGREEMENT AND
THAT NEITHER PARTY WOULD ENTER INTO THIS AGREEMENT WITHOUT SUCH LIMITATIONS.

14.  WARRANTY; DISCLAIMER OF WARRANTIES.

     14.1 The parties warrant and represent that the Services will be provided
in accordance with applicable federal, state and local laws, regulations, orders
and ordinances.

     14.2 EXCEPT AS EXPRESSLY PROVIDED IN THIS AGREEMENT, METRICOM DISCLAIMS ALL
WARRANTIES, WHETHER EXPRESS, IMPLIED, OR STATUTORY, REGARDING THE SERVICE,
INCLUDING ANY AND ALL WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE, OR THAT THE SERVICE WILL OPERATE ERROR-FREE OR WITHOUT INTERRUPTION.

<TABLE>
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Metricom Initials:                                                                            GoAmerica Initials:
                  ------------                Confidential & Proprietary                                          ------------
                                    Not for use or disclosure outside of Metricom or
                                       Contractor except under written permission
</TABLE>
<PAGE>   16
15.  GENERAL.

     15.1 NOTICES. All notices and consents required or permitted under this
Agreement must be in writing; must be personally delivered or sent by registered
or certified mail (postage prepaid), by private courier, or by facsimile
(receipt confirmed and with a copy sent by registered or certified mail), in
each case to the appropriate party at the address set forth below; and will be
effective upon receipt. Each party may change its address and/or addressee for
receipt of notices by giving notice of the new address and/or addressee to the
other party.

     IF TO METRICOM, TO:                    IF TO ASP, TO:

     Metricom, Inc.                         GoAmerica Communications Corporation
     333 West Julian Street                 401 Hackensack Avenue
     San Jose, CA 95110                     Hackensack, New Jersey 07601

     Facsimile: (408) 282-3076              Facsimile: 201/996-1772
     Attention:  Business Licensing         Attention:  Marty May

     15.2 SEVERABILITY. If any provision of this Agreement is held by a court of
law to be illegal, invalid, or unenforceable, the legality, validity, and
enforceability of the remaining provisions of this Agreement will not be
affected or impaired thereby and the illegal, invalid, or unenforceable
provision will be deemed modified such that it is legal, valid, and enforceable
and accomplishes the intention of the parties to the fullest extent possible.

     15.3 WAIVERS. The failure of either party to enforce any provision of this
Agreement, unless waived in writing by such party, will not constitute a waiver
of that party's right to enforce that provision or any other provision of this
Agreement.

     15.4 ASSIGNMENTS. Neither party may assign or transfer any of its rights
under this Agreement to any third party, by operation of law or otherwise,
without the prior written consent of the other party, which shall not be
unreasonably withheld. Notwithstanding the above, either party may assign this
Agreement upon notice to, but without consent of the other party, to an
affiliate or successor-in-interest in the event of a merger, transfer,
consolidation or sale of substantially all of the assigning party's business,
assets or capital stock provided, however, that the assignee shall expressly
assume the assigning party's obligations hereunder, and shall be subject to all
of the terms and conditions of this Agreement. Any attempted assignment or
transfer in violation of the foregoing will be void. This Agreement will be
binding upon, and inure to the benefit of, the successors and permitted assigns
of the parties.

     15.5 CONSTRUCTION. There are no intended third party beneficiaries of this
Agreement. The headings of Sections and subsections of this Agreement are for
convenience and will not be construed to alter the meaning of any provision of
this Agreement. Unless otherwise expressly stated, the word "including" when
used in this Agreement means "including but not limited to."

     15.6 ENTIRE AGREEMENT AND AMENDMENTS. This Agreement constitutes the entire
agreement between the parties and supersedes all previous written or oral
communications or understandings between them relating to the subject matter of
this Agreement. This Agreement may be amended only in writing signed by both
parties.

     15.7 COUNTERPARTS. This Agreement may be executed in identical
counterparts, each of which will be an original and which together will
constitute the same instrument.

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Metricom Initials:                                                                            GoAmerica Initials:
                  ------------                Confidential & Proprietary                                          ------------
                                    Not for use or disclosure outside of Metricom or
                                       Contractor except under written permission
</TABLE>

<PAGE>   17

                   REMAINDER OF PAGE INTENTIONALLY LEFT BLANK
     IN WITNESS WHEREOF, the parties have executed this Agreement as of the
                                Effective Date.

<TABLE>
<CAPTION>
<S>                                          <C>
METRICOM, INC.                               ASP: GOAMERICA COMMUNICATIONS
                                             CORPORATION

By: /s/ John Wernke                          By: /s/ Francis J. Elenio
   --------------------------------             --------------------------------
   John Wernke                               Name: Francis J. Elenio
   Sr. Vice President, Marketing and              ------------------------------
   Sales                                     Title: CFO
                                                   -----------------------------
</TABLE>

                   REMAINDER OF PAGE INTENTIONALLY LEFT BLANK

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Rev. 083000                        GoAmerica Authorized Service Provider Agreement                               Page 17 of 41
Metricom Initials:                                                                            GoAmerica Initials:
                  ------------                Confidential & Proprietary                                          ------------
                                    Not for use or disclosure outside of Metricom or
                                       Contractor except under written permission
</TABLE>

<PAGE>   18
  Confidential Materials omitted and filed separately with the Securities and
                Exchange Commission. Asterisks denote omissions.

                          EXHIBIT A: SERVICES OFFERING
                                       TO
                     RICOCHET(TM) CHANNEL PARTNER AGREEMENT
                                       FOR
                          AUTHORIZED SERVICE PROVIDERS

PURPOSE:
This document describes the Ricochet services which Metricom, Inc. will be
offering to ASP.

INTRODUCTION:
Ricochet is a nationwide mobile data service offering the fastest wireless data
connections to mobile professionals in small, medium and large corporations and
vertical markets. This service, and its various components, will be offered to a
variety of telecommunications and data services providers.

The following are the elements of the Ricochet Services Offering:

     1. Ricochet Network Interconnection
     2. Ricochet Service Accounts

1.   RICOCHET(TM) NETWORK INTERCONNECTION
     The first item needed when equipping an ASP to sell Ricochet(TM) Services
     is a Ricochet Network Interconnection. This is the "plumbing" and business
     agreement that allows an ASP to front-end their services with Ricochet(TM)
     Service. Once established, end-customers can access the ASPs' information
     and data services using the Ricochet(TM) network.

     Ricochet(TM) is a very unique connection method the ASP can offer to
     provide mobile access to their services.

     KEY FEATURES

     Full Benefits Of Ricochet -- The Ricochet(TM) Network Interconnection
     provides an ASP with a new mobile connection method specifically designed
     for high-performance mobile access.

     Nationwide Ricochet(TM) Access -- With the Network Interconnection, a ASP's
     end-customers can access the ASP's services from anywhere in the fifty
     United States (USA) where Ricochet(TM) service is available.

     High-Speed Connectivity -- All circuits associated with the Network
     Interconnection are appropriately sized to ensure an end-customer
     experience of 128Kbps/64Kbps.

     Capacity -- The Network Interconnection is scalable and will grow as the
     number of subscribers grows.

     Reliability -- All Network Interconnection installations are designed for
     [**]% availability.

     Secure -- All Network Interconnection installations will meet standard
     security specifications.

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                                       Contractor except under written permission
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<PAGE>   19
     Professional Implementation Team -- Network Interconnection installations
     will be designed, configured and installed by a dedicated Metricom team.

2.   RICOCHET(TM) INDIVIDUAL ACCOUNT (SUBSCRIPTION)
     Once a Ricochet(TM) Network Interconnection is installed and operational,
     an ASP can begin to purchase and sell individual accounts
     ("SUBSCRIPTIONS"). The Ricochet(TM) Individual Accounts can be sold in
     combination with a Ricochet(TM) compatible modem. Each end-customer must
     have a valid Subscription and modem in order to use the Ricochet(TM)
     network.

     KEY FEATURES

     Mobility -- A Ricochet(TM) Subscription allows the end-customer to move
     throughout the coverage territory and establish a connection to the
     information resources and additional services provided by the ASP.

     Nationwide Account -- Unlimited Ricochet(TM) access to anywhere coverage is
     available within the USA.

     Motion -- A Ricochet(TM) Subscription enables an end-customer to establish
     and maintain a connection to the ASP's services while in motion (e.g. car,
     train or bus). Average data rates may decrease to 28.8kbps/14.4kbps at
     speeds of 70mph.

     High Performance -- Each Ricochet(TM) Subscription connection will have an
     average data rate of 128kbps/64kbps over the Ricochet(TM) network.

     Coverage -- Each Ricochet(TM) Subscription will have coverage in the top 40
     metropolitan areas, airports, convention centers and hotels across the U.S.

     Security -- All Ricochet(TM) Subscriptions have secure data transport
     within the Ricochet(TM) network and up to the Ricochet(TM) Network
     Interconnection. This allows ASPs to offer secure end-to-end solutions such
     as VPNs.

     Ease Of Use -- Ricochet(TM) Subscriptions enable high performance mobile
     connections to an ASP's services. This is accomplished using a Ricochet(TM)
     compatible modem that connects with standard ports on most computing
     devices. It operates the same as a standard phone modem and functions with
     most software and operating systems.

     Flat-Rate Billing -- Each Ricochet(TM) Subscription has a fixed monthly fee
     for unlimited use of the Ricochet(TM) network. Metricom will make no
     provision for tracing or billing ASPs for metered services.

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<TABLE>
<S>                                <C>                                                        <C>
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Metricom Initials:                                                                            GoAmerica Initials:
                  ------------                Confidential & Proprietary                                          ------------
                                    Not for use or disclosure outside of Metricom or
                                       Contractor except under written permission
</TABLE>
<PAGE>   20

                      EXHIBIT C: SUPPORT LEVEL DEFINITIONS
                                       TO
                     RICOCHET(TM) CHANNEL PARTNER AGREEMENT
                                       FOR
                          AUTHORIZED SERVICE PROVIDERS

I.    DEFINITIONS

      LEVEL I SERVICE SUPPORT:

      ASP or the applicable Reseller will, in a diligent manner consistent with
      industry standards, supply all Level I Service Support, which shall be
      defined as all interactions with ASP Subscribers associated with the
      Service and Ricochet(TM) related services. This will include, but is not
      limited to, all customer billing issues, account setup and maintenance
      issues, pre-sales inquiries, and technical support requests. Upon
      exhausting all resources and escalation paths within ASP's support
      organization, designated ASP representatives may contact Metricom
      technical support for those items specified in the Technical Support
      definition below. Acceptable escalations to Metricom will consist of
      inoperability or non-standard operation of the Ricochet(TM) service.

      LEVEL II SERVICE SUPPORT:

      Level II Service Support, provided by Metricom directly to designated ASP
      support personnel only, consists of providing assistance in resolving
      those outstanding Level I Service Support issues related to the
      inoperability of the Ricochet(TM) network, associated software, and
      Metricom supplied services.

      LEVEL III SERVICE SUPPORT:

      Level III Service Support shall be provided by Metricom to designated ASP
      support personnel only and includes, but is not limited to, resolution of
      any issues that cannot or have not been satisfactorily resolved by Level
      II Service Support personnel. Only Metricom Level II Service Support
      personnel may escalate unresolved issues to Level III personnel. All Level
      III Service Support interaction with the ASP will be conducted by Metricom
      Level II personnel only.

      SCOPE OF TECHNICAL SUPPORT:

      Technical Support for Ricochet(TM) is defined as support for:

      -     Ricochet(TM) Modems and Accessories (Only those
            manufactured/provided by Metricom to ASP)

            -     Modem Hardware

            -     Modem Firmware

            -     Modem Accessories (Cabling, Batteries, Power Adapter, Antenna)

      -     Ricochet(TM) Installation Software, when provided by Metricom

      -     Services provided by Metricom

      -     Ricochet(TM) Network:

            -     Network Access Rights (Add/Delete/Modify services)

            -     Network Coverage Inquiries

            -     Network Performance Issues

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                Not for use or disclosure outside of Metricom or
                   Contractor except under written permission

<PAGE>   21

     Confidential Materials omitted and filed separately with the Securities and
     Exchange Commission. Asterisks denote omissions.

II. ESCALATION PROCESS

      Metricom will only accept calls from designated ASP contacts, which shall
number as follows:

      -     Up to [**] customers (arrow) [**] designated contacts

      -     Each additional [**] customers (arrow) [**] additional designee
            added

      -     Designated contacts should represent the highest level of escalation
            within ASP Technical Support group.

      Interaction of Metricom Technical Support and ASP:

-     ASP Subscribers may not contact Metricom directly for Ricochet(TM)
      support.

-     ASP designated contacts who have determined Level II support by Metricom
      Technical Support is necessary and appropriate will contact Metricom
      Technical Support by phone or other means to consult, during which time
      the ASP Subscriber may not be a part of the consultation.

-     Metricom reserves the right to change the method of interaction between
      ASP and Metricom Technical Support, which may include requests for support
      to be executed via a method specified by Metricom. These methods may
      include, but are not limited to, the following: telephone, e-mail,
      facsimile, and Web-based communications.

-     When further research is required to provide resolution, ASP agrees to
      conduct all follow-up calls to ASP Subscribers. Metricom reserves the
      right to communicate possible resolutions to ASP via phone conversation,
      voicemail message, facsimile, e-mail and Web-based communications.

III.  COMPLIANCE

-     Metricom reserves the right to levy a service charge, to ASP, billed at
      $[**] for each call to Metricom by an ASP subscriber who reaches Metricom
      after being transferred or referred by ASP without following the
      procedures outlined in the preceding paragraph.

-     Metricom reserves the right to levy a service charge, to ASP, billed at
      $[**] for each call to Metricom by ASP for assistance to resolve a Level I
      Service Support issue beyond a call allowance of [**] such calls per [**]
      ASP Subscribers per month.

-     Metricom reserves the right to levy a service charge, to ASP, billed at
      $[**] for each call to Metricom by an unauthorized agent, which is not one
      of the designated contacts that have been provided to Metricom by ASP.

-     Metricom reserves the right to levy a charge of $[**] for each call from
      ASP support personnel supporting the Ricochet(TM) service and hardware,
      but have not undergone training by a Ricochet(TM) certified Trainer. A
      certified Ricochet(TM) trainer is one that has been authorized by the
      Metricom training staff to perform training for the Ricochet(TM) service,
      technology, and hardware.

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                Not for use or disclosure outside of Metricom or
                   Contractor except under written permission

<PAGE>   22

     Confidential Materials omitted and filed separately with the Securities
              and Exchange Commission. Asterisks denote omissions.

IV.   RICOCHET(TM) SERVICE COVERAGE FOR ASP TECHNICAL SUPPORT PERSONNEL

      In the event that the ASP's Technical Support Personnel are located in an
      area where Service coverage is not available, ASP may elect to obtain
      Service coverage for their facilities at a reasonable cost to ASP.

      If Metricom Level II and Level III Service Support personnel are required
      to respond to issues that the ASP's Level I Service Support personnel
      could not resolve due to a lack of Service coverage at their facility,
      then the ASP will be billed at the rate of $[**] per minute to resolve the
      issue.

V.    RICOCHET(TM) COMPATIBLE MODEM TECHNICAL SUPPORT

      All Ricochet(TM) compatible modem technical support issues shall be
      addressed by separate agreement between the ASP and a Metricom authorized
      modem manufacturer. Except in the event where Metricom is the
      manufacturer, Metricom shall have no responsibility for any level of
      Ricochet(TM) compatible modem technical support.

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                Not for use or disclosure outside of Metricom or
                   Contractor except under written permission

<PAGE>   23

                             EXHIBIT D: TERMS OF USE
                                       TO
                     RICOCHET(TM) CHANNEL PARTNER AGREEMENT
                                       FOR
                          AUTHORIZED SERVICE PROVIDERS

         The following sets forth the terms and conditions applicable to your
use of the Ricochet(R) Wireless Communications Service ("Ricochet") provided to
you by Metricom, Inc. (R) ("Metricom"). By agreeing to use Ricochet or upon
commencing use of Ricochet, you agree to use Ricochet in accordance with the
terms and conditions of this Agreement and with any and all applicable laws and
regulations. ANY USER WHO DOES NOT AGREE TO BE BOUND BY THESE TERMS SHOULD
IMMEDIATELY STOP USE OF THE SERVICES AND NOTIFY METRICOM SO THAT THE USER'S
ACCOUNT MAY BE CLOSED.

         1. LICENSE TO USE RICOCHET. Subject to the terms and conditions of this
Agreement, you will have a nonexclusive, nontransferable, non-assignable
personal license to use Ricochet. The use of Ricochet or documentation related
thereto is licensed, not sold, to you for your use only under the terms of the
license contained herein. For purpose hereof, "use" means to access Ricochet.

         2. FEES. All fees incurred by you under this Agreement, together with
applicable sales, use or similar taxes, will be payable by credit card or by
other means acceptable to Metricom. If you request any change to your level of
service, you agree to pay any additional fees, if applicable, related thereto.

         3. EQUIPMENT AND SOFTWARE. You shall use your own equipment to access
Ricochet. You are responsible for all charges for your use of any third party
services via Ricochet, including any long distance telephone transmission and
any information or service provider charges incurred by you during your use of
Ricochet that are not part of the Ricochet service you have selected. METRICOM
SPECIFICALLY DISCLAIMS ANY RESPONSIBILITY FOR DETERMINING COMPATIBILITY BETWEEN
RICOCHET AND ANY EQUIPMENT OR SOFTWARE PROVIDED BY YOU AND EACH IN NO WAY
WARRANTS THE CAPABILITIES OF ANY SUCH EQUIPMENT OR SOFTWARE IN THE USE OF
RICOCHET. METRICOM MAKES NO FURTHER REPRESENTATIONS OR WARRANTIES THAT RICOCHET,
TOGETHER WITH YOUR EQUIPMENT, WILL ACHIEVE THE MAXIMUM NETWORK ACCESS SPEED SET
FORTH IN ANY METRICOM DOCUMENTATION.

         4. PROPRIETARY RIGHTS OF METRICOM. All right, title and interest in
Ricochet and the materials included therewith belong to Metricom, except to the
extent that third parties whose materials are made available via Ricochet
possess copyright or other proprietary interests in such materials. You will
not, by virtue of this Agreement, acquire any proprietary interest in Ricochet
or of any materials included therewith or accessed thereby.

         5. TERRITORIAL LIMITATIONS. Ricochet may only be used in the United
States, Canada and Puerto Rico. Use outside of this territory is prohibited and
may violate the export control laws of the United States. You agree not to
decompile, reverse engineer or disassemble any Ricochet software. You agree not
to modify, adapt, translate, incorporate into other works, rent, lease, loan,
resell for profit, distribute, network or create derivative works based upon
Ricochet, any Ricochet software or any part thereof or any manuals or
documentation related to Ricochet.

         6. LIMITATIONS ON USE. You are solely responsible for the information
or other material you distribute or voluntarily receive while using Ricochet
("Your Materials"). You agree that Your Materials

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                Not for use or disclosure outside of Metricom or
                   Contractor except under written permission
<PAGE>   24

and your use of Ricochet, as applicable, (a) shall not infringe on any third
party's copyright, patent, trademark, trade secret or other proprietary rights
or rights of publicity (and, accordingly, you shall not upload, post or
transmit, in any way, information, software or other material obtained through
Ricochet which is protected by copyright or other proprietary right, without
obtaining permission of the owner); (b) shall not violate any applicable law,
statute, ordinance or regulation (including without limitation the laws and
regulations governing export control and laws regarding or false advertising);
(c) shall not be defamatory, trade libelous, unlawfully threatening or
unlawfully harassing; (d) shall not be obscene or contain child pornography and
shall not be distributed to anyone who is not legally permitted to receive such
materials; and (e) shall not contain any viruses, Trojan horses, worms, time
bombs, cancelbots or other computer programming routines that are intended to
damage, detrimentally interfere with, surreptitiously intercept or expropriate
any system, data or personal information. You shall not (i) distribute or allow
anyone else to distribute unsolicited commercial e-mail through your Ricochet
account; (ii) engage in "Ponzi" or pyramid schemes; (iii) attempt to gain access
to any other person's computer, software, or data of any other person, without
the knowledge and consent of such person or to circumvent the user
authentication or security of any host, network, or account (including without
limitation, by accessing data not intended for you, logging into a server or
account you are not expressly authorized to access, or probing the security of
other networks or otherwise using tools designed for compromising security, such
as password guessing programs, cracking tools, packet sniffers or network
probing tools); (iii) impersonate another person with fraudulent or malicious
intent; (iv) restrict, inhibit or otherwise interfere with the ability of any
other person to use or enjoy Ricochet, including, without limitation, generating
levels of traffic sufficient to impede others' ability to send or retrieve
information, denial of service attacks, flooding of a network, overloading a
service, improper seizing and abuse of operator privileges and attempts to
"crash" a host; (v) knowingly disrupt Ricochet or take any other action that
imposes an unreasonable or disproportionately large load or burden on Metricom's
infrastructure and network or otherwise improperly disrupt or impede Metricom's
ability to deliver Ricochet and monitor the Ricochet network; or (vi) resell
Ricochet or otherwise charge others to use Ricochet. You are responsible for any
misuse of Ricochet that you have contracted for, even if the inappropriate
activity was committed by a friend, family member, guest, employee or customer
with access to your account. It is your responsibility to take steps to ensure
that others do not gain unauthorized access to Ricochet through your account.

Metricom, through Ricochet, acts as a passive conduit for your online
distribution and publication of your information and has no obligation to
monitor Ricochet and/or the content available through use of Ricochet. Metricom
reserves the right to monitor bandwidth, usage, and content from time to time to
identify violations of this Policy; and/or to protect the network and Ricochet
users. Metricom may take any responsive actions it deems appropriate. Such
actions include, but are not limited to, temporary or permanent removal of
content, cancellation of newsgroup posts, filtering of Internet transmissions,
temporary reduction of a user's network speed to a level designed to ensure that
sufficient bandwidth is generally available to Ricochet users, and the immediate
suspension or termination of all or any portion of the Ricochet service ordered
by a user. Metricom will have no liability for any such responsive actions, and
any such actions are not Metricom's exclusive remedies and Metricom may take any
other legal or technical action it deems appropriate. Metricom reserves the
right to investigate suspected violations of this Section 6, including the
gathering of information from the user or users involved and the complaining
party, if any, and examination of material on Metricom's servers and network.
During an investigation, Metricom may suspend the account or accounts involved
and/or remove material which potentially violates this Policy. You hereby
authorize Metricom to cooperate with (i) law enforcement authorities in the
investigation of suspected criminal violations, and (ii) system administrators
at other Internet service providers or other network or computing facilities in
order to enforce the provisions hereof. Such cooperation may include providing
your username, IP address, or other identifying information. Upon termination of
an account, Metricom is authorized to delete any files, programs, data

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                Not for use or disclosure outside of Metricom or
                   Contractor except under written permission

<PAGE>   25

and email messages associated with such account. The failure of Metricom to
enforce this Section 6, for whatever reason, shall not be construed as a waiver
of any right to do so at any time.

         7. LIMITATIONS ON NUMBER OF USERS AND ACCOUNT USAGE. You may not
transfer or share your Ricochet service accounts with anyone. You may not
disclose your password to any third parties.

         8. PRIVACY. Metricom will not sell, rent, or furnish your name or
specific information regarding you to any third party, except as required by
law. Metricom may provide advertisers or others with aggregate information about
our subscribers and business. No assurance can be given that e-mail will remain
private.

         9. SERVICE, REMEDY, AND LIMITATION ON REMEDY. In the event that
Ricochet service is interrupted or you experience some other difficulty with
your service attributable to Ricochet, you may call the phone number printed in
the applicable documentation provided by Metricom. Metricom shall endeavor to
correct problems attributable to Ricochet as soon as reasonably practicable. The
foregoing sets forth your sole and exclusive remedy with respect to such
problems.

         10. LIMITED WARRANTY AND DISCLAIMER OF WARRANTY. Metricom offers no
warranties, express or implied, regarding the accuracy, sufficiency or
suitability of Ricochet, its software or other Ricochet materials provided to
you. You have the sole responsibility for inspecting and testing all services to
your satisfaction before using them with important data. Metricom makes no
warranties or representations whatsoever regarding any goods or services
provided by any third parties pursuant to your use of Ricochet and Metricom
shall not be liable for any costs or damages arising out of, either directly or
indirectly, the actions or inactions of such third parties. RICOCHET IS
DISTRIBUTED ON AN "AS IS" BASIS WITHOUT WARRANTIES OF ANY KIND, INCLUDING
WITHOUT LIMITATION ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE, TITLE AND NON-INFRINGEMENT. METRICOM DOES NOT WARRANT THAT ANY DATA OR
FILES SENT BY OR TO A USER WILL BE TRANSMITTED IN UNCORRUPTED FORM OR WITHIN A
REASONABLE PERIOD OF TIME. SOME STATES DO NOT ALLOW THE EXCLUSION OF IMPLIED
WARRANTIES, SO THE ABOVE EXCLUSION MAY NOT APPLY TO YOU. THIS WARRANTY GIVES YOU
SPECIFIC LEGAL RIGHTS AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE
TO STATE.

         11. LIMITATION OF LIABILITY.

         (a) Without limiting the generality of the foregoing Sections 9 and 10,
Metricom shall not be liable for any loss, injury, claim, liability or damage of
any kind resulting in any way from (i) your use of Ricochet, (ii) your use of
any equipment in connection with Ricochet, or (iii) the content or materials
included with or accessed via use of Ricochet.

         (b) IN NO EVENT SHALL METRICOM BE LIABLE TO YOU OR ANY THIRD PARTY FOR
ANY CONSEQUENTIAL, EXEMPLARY OR INCIDENTAL DAMAGES, INCLUDING BUT NOT LIMITED TO
ANY LOST PROFITS, DATA, SAVINGS OR REVENUES, ARISING OUT OF OR IN CONNECTION
WITH THIS AGREEMENT, WHETHER UNDER TORT, CONTRACT OR OTHER THEORIES OF RECOVERY,
EVEN IF METRICOM HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. BECAUSE
SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR
CONSEQUENTIAL OR INCIDENTAL DAMAGES, THE ABOVE LIMITATION MAY NOT APPLY TO YOU.

         (c) In no event shall Metricom be liable to you or any third party for
any amount in excess of the subscription price actually paid by you for the most
recent year of service, whether under tort, contract, or other theories of
recovery.

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                Not for use or disclosure outside of Metricom or
                   Contractor except under written permission

<PAGE>   26

  Confidential Materials omitted and filed separately with the Securities and
                Exchange Commission. Asterisks denote omissions.

         12. INDEMNITY. You shall indemnify Metricom against liability as well
as against claims or demands, or damages, or costs or expenses (including but
not limited to reasonable attorneys' fees) arising out of or in connection with
your breach of any limitation set forth in Sections 5 or 6 of this Agreement, or
breach of any other provision of this Agreement, or your violation of any duty
imposed by law, or any such breach or violation by any person to whom you have
given your password or authorized or permitted to use your Ricochet account in
any way.

         13. TERM. This Agreement shall be effective as of the date on which
Metricom receives this signed Agreement or when you commence using Ricochet.
This Agreement shall remain effective until terminated pursuant to Section 15.

         14. AUTOMATIC RENEWAL. As a service to its subscribers, Metricom will
automatically renew your Ricochet subscription service effective at the end of
each subscription period. If you do not wish automatic renewal, please notify us
by delivery of email or other written notice. If your service has been
automatically renewed and you wish to terminate it, you may do so at any time
without cause as provided in Section 15.

         15. TERMINATION. Metricom reserves the right, at its sole discretion,
immediately, without notice, and with or without cause to suspend or terminate
your access to and use of Ricochet, to delete all information related to your
Ricochet account, upon any breach of the terms and conditions hereof by you.
Either you or Metricom may terminate this Agreement at any time without cause by
sending notice to the other party.

         16. EFFECT OF TERMINATION.

         (a) If you cancel service at any time, you will be obligated to pay all
fees at the nondiscounted rate up through the end of the month. If you prepaid,
Metricom will return the amounts you prepaid for the months thereafter excluding
any prepayment discount and also excluding shipping and handling costs. If you
cancel service after [**], you will also be obligated for the activation fee.

         (b) Sections 3, 4, 5, 6, 7, 10, 11, 15, 16, 18, 20, 21, 22, and 34
shall survive termination or expiration of this Agreement.

         17. U.S. GOVERNMENT END USERS. Ricochet is a "commercial item," as that
term is defined at 48 C.F.R. 2.101, consisting of "commercial computer software"
and "commercial computer software documentation," as such terms are used in 48
C.F.R. 12.212 and is provided to the U.S. Government only as a commercial end
item. Consistent with 48 C.F.R. 12.212 and 48 C.F.R. 227.7202-1 through
227.7202-4, all U.S. Government end users acquire Ricochet with only those
rights set forth herein.

         18. CHOICE OF LAW AND FORUM. This Agreement shall be deemed to have
been entered into and shall be interpreted and governed in all respects by the
laws of the State of California. Any action under or relating to or in
connection with this Agreement may be brought in a court of competent
jurisdiction, federal or state, in the State of California and in no other
jurisdiction. You hereby consent to such jurisdiction in California and to
service of process issued by such court.

         19. MODIFICATION BY METRICOM. Upon delivery of e-mail or other written
notice, Metricom may modify this Agreement, its operating rules, and any
specific prices that became a subject of this

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                   Contractor except under written permission

<PAGE>   27

Agreement. Without prior notice, Metricom, in its sole discretion, may
discontinue or revise any or all other prices and any or all other aspects of
Ricochet.

         20. NOTICES. Except as set forth in Section 19, any notice, demand,
request or consent required or permitted hereunder shall be in writing and shall
be given by certified mail, return receipt requested, or via express courier, to
your last known address.

         22. SEVERABILITY. Should any provision of this Agreement be held by a
court of law to be illegal, invalid or unenforceable, the legality, validity,
and enforceability of the remaining provisions of this Agreement shall not be
affected or impaired thereby.

         23. NONWAIVER. The failure of any party to enforce any of the terms or
conditions of this Agreement, unless waived in writing, shall not constitute a
waiver of that party's right to enforce each and every term and condition of
this Agreement.

         24. ENTIRE AGREEMENT. These Terms and Conditions and any Ricochet order
form you have submitted to Metricom shall collectively constitute the entire
agreement between Metricom and you with respect to the subject matter hereof.
This Agreement supersedes all prior discussions, negotiations, or
representations by the parties.

MCOM Terms of Use Rev. 022900

                   REMAINDER OF PAGE INTENTIONALLY LEFT BLANK

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                Not for use or disclosure outside of Metricom or
                   Contractor except under written permission

<PAGE>   28

  Confidential Materials omitted and filed separately with the Securities and
                Exchange Commission. Asterisks denote omissions.

                          EXHIBIT E: QUALITY OF SERVICE
                                       TO
                     RICOCHET(TM) CHANNEL PARTNER AGREEMENT
                                       FOR
                          AUTHORIZED SERVICE PROVIDERS

1.       PERFORMANCE ("PERFORMANCE QUALITY OF SERVICE")

Peak Network Load Hour is defined as the hour of each day (the 24-hour period
commencing each 12:01 a.m. and ending each 12:00 a.m.) during which the most
bytes are sent through each GSA network.

Fixed Point Performance: During the Peak Network Load Hour, Subscribers will get
a minimum of [**] throughput downstream and [**] throughput upstream from the
subscriber device to the gateway at the NIF, for at least [**]% of the data
transfers during the Peak Network Load Hour. The network shall provide such
performance to [**]% of devices inside homes, offices and hotels within the GSA
that are above ground and within line of sight and [**] feet of an exterior
window in a building.

Mobile Performance: During the Peak Network Load Hour, a mobile Subscriber
moving at [**] MPH will get a minimum of [**] throughput downstream and [**]
throughput upstream from the subscriber device to the gateway at the NIF, for at
least [**]% of the data transfers during the Peak Network Load Hour. The network
shall provide such performance to at least [**]% of moving trains and
automobiles within the GSA that are above ground.

Fixed Point Performance and Mobile Performance shall be no worse than the above
figures outside of the Peak Network Load Hour.

If performance, reasonably tested, would be within these parameters but for
factors outside of Metricom's control, including without limitation backbone
latency and server speed, but not including radio interference, Metricom will be
deemed to be in compliance with this Section 1 of Schedule 4.1.

2.       NETWORK UPTIME ("NETWORK UPTIME QUALITY OF SERVICE")

Network availability will be measured between any subscriber and the NIF.
Metricom shall provide availability at least [**]% of the time.

3.       NETWORK COVERAGE

The network will provide indoor (within line of sight and [**] feet from an
exterior window in a building), above ground coverage to at least the square
mileage in each GSA set forth on Schedule 1.3, which shall cover [**]% of the
total population within the GSA.

The Metricom network will provide indoor (within line of sight and [**] feet
from an exterior window in a building), above ground coverage of [**]% of
important business traveler locations within the GSA, defined as airports,
convention centers and high concentrations of business hotels.

Metricom will consider the network in a GSA ready for commercial operation when
the network provides indoor (within line of sight and [**] feet from an exterior
window in a building), above ground coverage to [**]% of the population within
the Network Covered Area of the GSA.

During the planning phase (prior to any deployment) of a GSA system to be built,
Metricom shall describe its planned coverage areas to ASP.

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<PAGE>   29

After deployment and prior to commencement of service, Metricom shall perform
measurements to confirm that the planned coverage area is likely to be achieved
in a loaded system.

After commencement of service, Metricom shall conduct on-going measurements and
performance monitoring in order to verify the coverage area of the system during
periods of maximum load.

If shortfalls in the planned coverage area (indoor and outdoor) are found in the
operational fully loaded system, Metricom shall make modifications to expand the
operational coverage area so that it conforms to the planned coverage area. Such
work should be carried out on a commercially reasonable schedule, which Metricom
shall supply to ASP.

4.       PERFORMANCE MEASUREMENT

Metricom agrees to work with ASP to measure performance (and report quarterly on
availability, and throughput rates) between the NIF and the Subscriber modems.

5.       EASE OF USE

On an ongoing basis, Metricom will provide installation wizards or other tools
to facilitate installation and configuration of the Service and Ricochet modems
such that Ricochet modems will be at least as easy to install as comparable wire
line modems. Normal user installations shall take less than five minutes.
Metricom will agree to support at least the latest three versions of Microsoft
Windows Operating System, two versions of Mac OS and all other Operating Systems
used as the primary operating system on more than 10% of Laptop Computers in the
United States. The hardware and software will be compatible with all major
Laptop computers manufactured by DELL, IBM, Compaq, Toshiba, Gateway or any
other manufacturer with 10% or more of United States market share of Laptop
computers.

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Metricom Initials: ___  Confidential & Proprietary   GoAmerica Initials: ______
                Not for use or disclosure outside of Metricom or
                   Contractor except under written permission

<PAGE>   30

                      EXHIBIT F: BUSINESS MANAGEMENT SYSTEM
                                       TO
                     RICOCHET(TM) CHANNEL PARTNER AGREEMENT
                                       FOR
                          AUTHORIZED SERVICE PROVIDERS

This document defines the Business Management System and its requirements.
Metricom will provide ASP with services and support mechanisms for managing ASP
Subscriber accounts as follows:

1)       SUBSCRIBER MANAGEMENT SYSTEMS

         Metricom provides the following systems and capabilities to the ASP:

         1. SUBSCRIBER ACTIVATION AND MANAGEMENT SYSTEM (SMS):

            In order to activate subscribers for service, they must be enrolled
            in the Metricom SMS. This allows our network to authorize and
            authenticate subscribers onto the network via the Ricochet modem.
            The interface to the SMS can be one of three ways:

              1.     Online: via a browser (IE or Netscape 4.0 or higher)
                     interface connected to the internet

              2.     Batch: via a file transfer mechanism

              3.     API: via a direct call interface to the SMS

            ASPs may choose to interact with Metricom using any or all of the
            above interfaces. For the online mode, ASPs will require training in
            the use of the browser-based interface. Metricom will work with the
            ASP's Support Contact to develop a training program for your account
            reps. The SMS application allows the Service Provide to control who
            is allowed to make inquiries, updates, and generate reports from the
            application. Setup and maintenance of this data is accomplished
            through the ASP's systems administrator.

            2. TECHNICAL SUPPORT SYSTEMS:

            Metricom provides systems that will allow the ASP's technical
            support staff to interact with Metricom. These systems are provided
            via a browser interface over the Internet. There are two components:

              1.     Trouble Ticketing Action Response: Metricom has deployed
                     Remedy's AR systems as the primary interface for escalating
                     issues to Metricom's internal technical support group.

              2.     Diagnostic Tools: these tools will allow the ASP to query
                     subscriber modem status to determine modem functionality
                     and help determine customer problems.

2)       BILLING SYSTEMS

         Per the Agreement and payment schedule outlined in the Agreement,
         Metricom will bill the ASP for their active subscribers on the chosen
         day of the month. The billing reports will contain a summarization of
         the charges for each of the subscribers. Metricom will invoice the ASP
         monthly. Monthly fees are based upon Total Net Cumulative Subscribers
         (TNCS). Each month, Metricom will provide the ASP reports containing:

              i)     Number of new subscribers for the month

              ii)    Terminations during the month

              iii)   TNCS as defined above

              iv)    Billing occurs when a modem is registered

              v)     Billing reports will indicate which business unit is to be
                     charged.

Rev. 083000     GoAmerica Authorized Service Provider Agreement    Page 30 of 41

Metricom Initials: ___  Confidential & Proprietary   GoAmerica Initials: ______
                Not for use or disclosure outside of Metricom or
                   Contractor except under written permission

<PAGE>   31

     Confidential Materials omitted and filed separately with the Securities
              and Exchange Commission. Asterisks denote omissions.

       ASPs may request from Metricom detailed billing report information. This
       information will list each of the subscribers that are been have
       activated, their status, service levels, and monthly charge less
       adjustments.

3)     RIGHT OF WAY FEES

       As stated in the Agreement, Metricom will remit to the appropriate
       municipalities the fees owed based upon the location of the Subscriber.
       In order to accomplish this, ASP must provide to Metricom accurate name
       and address information. This information is confidential.

4)     SECURITY

       Neither party shall disclose any information other than on a "need to
       know" basis. Metricom will not use any subscriber information not
       authorized by the ASP. Any disclosure will require prior written consent.

5)     IMPLEMENTATION TEAM AND SCHEDULE

       a)     Metricom and the ASP will appoint the personnel necessary to
              effectively implement the Business Management System.

              i)     Team shall be appointed within [**] of the execution of a
                     signed agreement.

                     (1)    Each party shall appoint a Team Leader and
                            communicate the identity of that leader to the other
                            party

                     (2)    The Team Leaders of each party shall be responsible
                            for managing the planning and implementation
                            schedule of the Business Management System.

b)     Metricom and the ASP shall complete the implementation of the Business
       Management System within [**] of the commencement of the "Agreement Year"
       as defined in Paragraph 1.2 of the signed agreement.

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Metricom Initials: ___  Confidential & Proprietary   GoAmerica Initials: ______
                Not for use or disclosure outside of Metricom or
                   Contractor except under written permission

<PAGE>   32

     Confidential Materials omitted and filed separately with the Securities
              and Exchange Commission. Asterisks denote omissions.

                               EXHIBIT G: PRICING
                                       TO
                     RICOCHET(TM) CHANNEL PARTNER AGREEMENT
                                       FOR
                          AUTHORIZED SERVICE PROVIDERS

Subscriber Rate discount ("Discount Rate") provided to ASP is based upon the
assumption that ASP's Total Net Cumulative Subscribers ("TNCS") at the end of
each year will meet or exceed the ASP Subscriber Objectives set forth in Table A
("Yearly Subscriber Objectives").

Table A

                          Yearly Subscriber Objective*
              Year 1                                             [**]
              Year 2                                             [**]
              Year 3                                             [**]
              Total TCNS                                         [**]
                  *TCNS per year

Table B

                             ASP Subscriber Rates**
              Normal Rate                                        $[**]/month
              Discount Rate                                      $[**]month
                  **Rates based per ASP Subscriber per month

Table C

                         Quarterly Subscriber Objectives
              YEAR 1                                             TCNS
              Quarter 1                                          [**]
              Quarter 2                                          [**]
              Quarter 3                                          [**]
              Quarter 4                                          [**]
              YEAR 2
              Quarter 1                                          [**]
              Quarter 2                                          [**]
              Quarter 3                                          [**]
              Quarter 4                                          [**]
              YEAR 3
              Quarter 1                                          [**]
              Quarter 2                                          [**]
              Quarter 3                                          [**]
              Quarter 4                                          [**]

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                Not for use or disclosure outside of Metricom or
                   Contractor except under written permission

<PAGE>   33

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Metricom Initials: ___  Confidential & Proprietary   GoAmerica Initials: ______
                Not for use or disclosure outside of Metricom or
                   Contractor except under written permission

<PAGE>   34

     Confidential Materials omitted and filed separately with the Securities
              and Exchange Commission. Asterisks denote omissions.

               EXHIBIT H: ASP STANDARD SERVICE LEVEL REQUIREMENTS
                                       TO
                     RICOCHET(TM) CHANNEL PARTNER AGREEMENT
                                       FOR
                          AUTHORIZED SERVICE PROVIDERS

PART I.  NETWORK CONNECTION STANDARD SERVICE LEVEL REQUIREMENTS

In order to guarantee [**] of performance to Subscribers, the ASP's circuits
shall meet the standard service level requirements set forth herein for latency,
bandwidth utilization and packet loss (collectively, "NETWORK SSLR") for the
applicable type of connect, commencing upon the first day of the second month
after the successful end-to-end testing of the Service.

Metricom's network operations center (the "NOC") will collect network
performance statistics while monitoring the ASP's network connections at each
Metricom network interconnection facility ("NIF") in a GSA to ensure that the
ASP is meeting the Network SSLR. In no case will PING tests performed by
Subscribers be recognized by Metricom as a valid, measurable test of ASP's
compliance with its Network SSLR.

1.   NETWORK DELAY

     1.1      Measurement Testing

              Mericom will perform network delay measurement testing between the
              Metricom service provider gateway and an interface node on the
              ASP's network. The network delay will be measured by determining
              roundtrip network latency in accordance with the following
              measurements:

                      a)  Software and hardware components capable of measuring
                          traffic and responses shall be placed at each NIF to
                          measure network delay using the statistics from ICMP
                          PING packets.

                      b)  The roundtrip network latency measurements shall be
                          taken at [**] minute intervals. These measurements
                          shall be averaged on an hourly basis to determine the
                          average network delay sample for that hour ("AVERAGE
                          NETWORK DELAY SAMPLE") for that NIF.

              1.1.1   Included Components

                      All components of the ASP's network which includes the
                      service provider gateway and the Cisco 7206 router
                      terminating the ASP's circuit shall be included in the
                      determination of the network delay.

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                Not for use or disclosure outside of Metricom or
                   Contractor except under written permission

<PAGE>   35

     Confidential Materials omitted and filed separately with the Securities
              and Exchange Commission. Asterisks denote omissions.

              1.1.2   Excluded Components

                      The equipment located beyond the termination of the ASP's
                      circuit on its network shall be excluded in the
                      determination of the network delay.

     1.2      Standard Service Level Requirements ("NETWORK DELAY SSLR")

              In any given month, no more than [**] percent ([**]%) of the
              Average Network Delay Samples for a NIF shall exceed the
              applicable Maximum Allowable Network Delay between the NIF and the
              ASP's point of presence ("POP") for the specific type of
              connection as set forth below:

                      a)  Direct connections to Metricom's POP ("DIRECT
                          CONNECTIONS") shall maintain a network delay between
                          the NIF and the ASP POP equal to or less than [**]
                          ("MAXIMUM ALLOWABLE NETWORK DELAY").

                      b)  Connections utilizing the Internet ("VIRTUAL
                          CONNECTIONS") shall maintain a network delay between a
                          NIF and the applicable ASP POP equal to or less than
                          [**] ("MAXIMUM ALLOWABLE NETWORK DELAY").

     1.3      Non-Compliant Connections

              In the event more than [**] percent ([**]%) of the Average Network
              Delay Samples for a NIF exceed the applicable Maximum Allowable
              Network Delay for the specific type of connection for [**] months,
              the ASP shall:

                      a)  Non-compliant Direct Connections circuits shall be
                          upgraded to a circuit with a higher speed.

                      b)  Non-compliant Virtual Connections shall be replaced
                          with a Direct Connection to the NIF where the
                          applicable Maximum Allowable Network Delay is not
                          being met.

2.   BANDWIDTH UTILIZATION

     2.1      Measurement Testing

              Metricom will perform measurement testing on the ASP's circuits
              terminated at the NIF to determine bandwidth utilization in
              accordance with the following criteria:

                      a)  Software and hardware components capable of measuring
                          traffic and responses shall be placed at each NIF to
                          measure bandwidth utilization.

                      b)  The bandwidth utilization measurements shall be taken
                          at [**] minute intervals on the ports used for the
                          ASP's circuits. These measurements shall be averaged
                          on an hourly basis to determine the average network
                          capacity sample for that hour ("AVERAGE BANDWIDTH
                          UTILIZATION SAMPLE").

Rev. 083000     GoAmerica Authorized Service Provider Agreement    Page 35 of 41

Metricom Initials: ___  Confidential & Proprietary   GoAmerica Initials: ______
                Not for use or disclosure outside of Metricom or
                   Contractor except under written permission

<PAGE>   36

     Confidential Materials omitted and filed separately with the Securities
              and Exchange Commission. Asterisks denote omissions.

              2.1.1   Components Included

                      All components of the ASP's network which include the
                      Cisco 7206 router terminating the ASP's circuit shall be
                      included in the determination of the bandwidth
                      utilization.

              2.1.2   Components Excluded

                      The equipment located beyond the termination of the ASP's
                      circuit on their Subscriber Management System shall be
                      excluded in the determination of bandwidth utilization.

     2.2      Standard Service Level Requirements ("BANDWIDTH SSLR")

              In any given month, no more than [**] percent ([**]%) of the
              Average Bandwidth Utilization Samples for a NIF shall exceed the
              applicable Maximum Allowable Bandwidth Capacity between a NIF and
              the ASP's POP for the specific type of connection as set forth
              below:

                      a)  Direct Connections shall maintain an average
                          NIF-to-NIF bandwidth utilization equal to or less than
                          [**] percent ([**]%) of the ASP's circuit capacity
                          ("MAXIMUM ALLOWABLE BANDWIDTH CAPACITY").

                      b)  Virtual Connections shall maintain bandwidth
                          utilization equal to or less than [**] percent ([**]%)
                          of the subscribed capacity for that NIF ("MAXIMUM
                          ALLOWABLE BANDWIDTH CAPACITY").

     2.3      Non-Compliant Connections

              In the event more than [**] percent ([**]%) of the Average
              Bandwidth Utilization Samples for a NIF exceed the applicable
              Maximum Allowable Bandwidth Utilization for the specific type of
              connection for [**] months, the ASP shall:

                      a)  Order an additional circuit to support Subscribers for
                          the non-compliant Direct Connect. The additional
                          circuit shall equal or exceed the existing circuit
                          capacity.

                      b)  Increase capacity for the non-compliant Virtual
                          Connection or upgrade it to a Direct Connection to the
                          NIF.

3.   PACKET LOSS

     3.1      Measurement Testing

              Mericom will perform packet loss measurement testing on the ASP's
              circuits terminated at the NIF in accordance with the following
              measurements:

                      a)  Software and hardware components capable of measuring
                          packet loss shall be placed at each Metricom NIF to
                          measure the number of packets lost.

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                   Contractor except under written permission

<PAGE>   37

     Confidential Materials omitted and filed separately with the Securities
              and Exchange Commission. Asterisks denote omissions.

                      b)  The packet loss measurements shall be taken at [**]
                          minute intervals on the ports used for the ASP's
                          circuits. These measurements shall be averaged on an
                          hourly basis to determine the average network capacity
                          sample for that hour ("AVERAGE PACKET LOSS SAMPLE").

                      c)  The packet loss measurement is based on measuring the
                          number of packets lost while sending sixty four (64)
                          byte ICMP PING packets to the ASP's LT2P network
                          server.

Rev. 083000     GoAmerica Authorized Service Provider Agreement    Page 37 of 41

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                   Contractor except under written permission

<PAGE>   38

     Confidential Materials omitted and filed separately with the Securities
              and Exchange Commission. Asterisks denote omissions.

              3.1.1   Included Components

                      All components of the ASP's network which includes the
                      service provider gateway and the Cisco 7206 router
                      terminating the ASP's circuit shall be included in the
                      determination of the packet loss.

              3.1.2   Excluded Components

                      The equipment located beyond the termination of the ASP's
                      circuit on its network shall be excluded in the
                      determination of the packet loss.

     3.2      Standard Service Level Requirements ("PACKET LOSS SSLR")

              In any given month, no more than [**] percent ([**]%) of the
              Average Packet Loss Samples for a NIF shall exceed the applicable
              Maximum Allowable Packet Loss between that NIF and the ASP's POP
              for the specific type of NIF connection as set forth below:

                      a)  Direct Connections shall maintain a packet loss rate
                          between the NIF and the applicable ASP POP equal to or
                          less than [**] percent ([**]%) [**] ("MAXIMUM
                          ALLOWABLE PACKET LOSS").

                      b)  Virtual Connections via the Internet shall maintain a
                          network delay between a NIF and the applicable ASP POP
                          equal to or less than [**] percent ([**]%) [**]
                          ("MAXIMUM ALLOWABLE PACKET LOSS").

     3.3      Corrective Action for Non-Compliance

              In the event more than [**] percent ([**]%) of the Average Packet
              Loss Samples for a NIF exceed the applicable Maximum Allowable
              Packet Loss for the specific type of NIF connection for more than
              [**] months, the ASP shall take the following corrective action:

                      a)  An ASP with a Direct Connection shall work with the
                          NOC to resolve the problem.

                      b)  An ASP with a Virtual Connection shall increase its
                          capacity at that NIF or replace the connection with a
                          Direct Connection to the NIF where the applicable
                          Maximum Allowable Packet Loss is not being met.

4.   NETWORK SSLR MANAGEMENT

     4.1      Reports

              Metricom will provide network delay, bandwidth utilization and
              packet loss reports (collectively, the "REPORTS"), at no extra
              charge, for ASP review. The ASP shall obtain the Reports from
              Metricom's website via username and password.

Rev. 083000     GoAmerica Authorized Service Provider Agreement    Page 38 of 41

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                   Contractor except under written permission

<PAGE>   39

     Confidential Materials omitted and filed separately with the Securities
              and Exchange Commission. Asterisks denote omissions.

              The reporting tool queries the ASP's interface at a set time
              interval depending on line speed and the connection type. For
              example, T1 lines are queried about every [**] minutes. Therefore,
              a sampling of data represents [**] minutes of traffic. Reports are
              based on a 24-hour period, from 00:00 CST to 23:59 CST.

              The following information can be viewed on the report:

              -      Date

              -      [**] - The i[**] service.

              -      [**] - The [**] the customer.

              -      [**] - The [**] the customer.

              -      [**]- The [**] speed.

              -      [**] - The [**] period.

              -      [**] - The [**] period.

              -      [**] - The [**] speed.

              -      [**] - The [**] the customer.

              -      [**] - The [**]the customer.

              -      [**] - The [**] the customer.

              -      [**] - The a[**] the customer.

              -      [**] - The [**] the customer.

              -      [**] - The [**] the customer.

     4.2      Report Review and Verification

              The ASP will assign a prime contact that will meet with the
              Metricom Channel Manager on the last business day of every month.
              The Reports shall be reviewed and compliance with this EXHIBIT H
              shall be verified by both parties. If a root cause analysis
              ("RCA") of the non-compliance is reasonably required by either
              party, the requiring party shall notify the non-requiring party.
              The non-requiring party shall produce a RCA report by the next
              monthly meeting.

5.   NON-COMPLIANCE

     5.1      Cause of Non-Compliance

              In the event of non-conformance at a NIF as set forth in Part 1 of
              this EXHIBIT H, the NOC will perform a series of diagnostic tests
              to ensure that any non-compliance was not a result of any Metricom
              initiated changes at the NIF where the ASP's Network SSLR is not
              met. If the non-compliance is due to such change or installation
              by Metricom, the NOC will take full

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Metricom Initials: ___  Confidential & Proprietary   GoAmerica Initials: ______
                Not for use or disclosure outside of Metricom or
                   Contractor except under written permission

<PAGE>   40

     Confidential Materials omitted and filed separately with the Securities
              and Exchange Commission. Asterisks denote omissions.

              responsibility in resolving the problem according to the
              guidelines of this EXHIBIT H. Any necessary follow up is the joint
              responsibility of Metricom and the Metricom account sales team.

     5.2      Notification Process

              At such time as Metricom has determined that the ASP has not met
              its Network SSLR, the NOC will create a trouble ticket and notify
              the ASP in writing, and Metricom's Technical Support Group of
              ASP's failure to comply with its Network SSLR.

     5.3      Cure Period

              The ASP shall have [**] from such notification to bring the
              network connection performance back into compliance with the
              Network SSLR as set forth herein.

     5.2      Penalties

              If ASP fails to take corrective action as set forth herein,
              Metricom shall charge the ASP a fee equal to [**] percent ([**]%)
              of of the wholesale subscription for all of the Ricochet
              Subcribers affected in that GSA for each day that the ASP is
              non-compliant with the Network SSLR set forth herein.

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Rev. 083000     GoAmerica Authorized Service Provider Agreement    Page 40 of 41

Metricom Initials: ___  Confidential & Proprietary   GoAmerica Initials: ______
                Not for use or disclosure outside of Metricom or
                   Contractor except under written permission<PAGE>   1
  Confidential  Materials omitted and filed separately with the Securities and
                Exchange Commission. Asterisks denote omissions.

                                                                   EXHIBIT 10.27

                                  AMENDMENT ONE
                                       TO
                     RICOCHET(TM) CHANNEL PARTNER AGREEMENT
                                       FOR
                          AUTHORIZED SERVICE PROVIDERS
                                 BY AND BETWEEN
             METRICOM, INC. AND GOAMERICA COMMUNICATIONS CORPORATION
                             DATED SEPTEMBER 1, 2000

Reference is made to that certain Ricochet(TM) Channel Partner Agreement for
Authorized Service Providers effective September 1, 2000 (the "Agreement")
between METRICOM, INC. ("Metricom"), a Delaware corporation, with it principal
offices at 333 West Julian Street, San Jose, CA 95110, and GOAMERICA
COMMUNICATIONS CORPORATION ("ASP") located at 401 Hackensack Avenue, New Jersey,
07601.

1.   The Agreement is amended by adding the following as a new Section:

     ASP  CO-OPERATIVE MARKETING FUNDING PROGRAM.

     Metricom will establish a program (the "Co-op Program") under which
     Metricom will make funds available to ASP, and which ASP shall earn under
     the requirements established in this Section ("Co-Op Funds"), to assist ASP
     in its efforts to effectively endorse, promote and sell the Service as
     contemplated in this Agreement for the year 2000. The Co-op Program is
     limited to the acquisition of new Ricochet(TM) subscribers (excludes
     existing subscribers of the [**] Ricochet(TM) service) and does not apply
     to any customer loyalty, retention or other programs directed at existing
     Subscribers. To be eligible under the Co-op Program, all programs require
     Metricom's written approval prior to the release of any such program.

     1. PROGRAM DESCRIPTION. The Co-op Program is comprised of three categories:

     (A) CO-OPERATIVE ADVERTISING/DIRECT MAIL. This category covers lead
generation, advertising, media placement and non-installed-base direct mail
programs. Metricom will make available, to ASP, a mix of broadcast (television
and radio), print and online in each GSA at a discount of [**] percent ([**]%)
off of the production cost. The discounted rate, as reflected in Table 1.A, will
be deducted directly from ASP's earned Ad Funds, subject to the limitations set
forth in Paragraph 2(b) of this Section.

     TABLE 1.A CREATIVE RATES

<TABLE>
<CAPTION>
                                                                              PRODUCTION
                     MEDIA                                    VALUE              COST          ASP RATE
                     -----                                    -----           ----------       --------
<S>                                                           <C>             <C>              <C>
TV* - (:30 spot) :20 second Ricochet with :10 partner
taggable (partner can choose among 4 spots)                    $[**]            $[**]            $[**]
Radio - (:30 spot) :20 second Ricochet with :10 partner
taggable                                                       $[**]            $[**]            $[**]
Newspaper, Black and White (4x10, Jr. page, full page)         $[**]K           $[**]            $[**]
Magazine/Trade Publication                                     $[**]            $[**]            $[**]
Online                                                         $[**]            $[**]K           $[**]
Direct Mail (four color post card)                             $[**]            $[**]K           $[**]
</TABLE>

<TABLE>
<S>                                <C>                                                          <C>
Rev. 082100eap                     Amendment One to Ricochet(TM)Channel Partner Agreement       Page 1 of 4
                                   for Authorized Service Providers Metricom Confidential
                                   and Proprietary Not for Use or Disclosure Outside of
Metricom Initials:                 Metricom or ASP Except Upon Written Approval                 GoAmerica Initials:
                  --------------                                                                                   ------------
</TABLE>
<PAGE>   2
  Confidential Materials omitted and filed separately with the Securities and
                Exchange Commission. Asterisks denote omissions.

     In the event ASP elects to develop its own campaign, using Metricom's
co-branded mark, Metricom shall have the right to review and approve, in
writing, such campaign prior to production. ASP agrees not to launch any
campaign earlier than [**] from Metricom's Ricochet(TM) brand campaign launch as
determined by Metricom and communicated in writing to ASP by an authorized
representative of Metricom.

          (I) DIRECT MAIL. ASP has the option to use Metricom provided Creative
     or develop its own creative. In either event, Metricom shall have the right
     to review and approve, in writing, all creative prior to production.

          (B) MARKET DEVELOPMENT. This category is designed to offset the costs
     of special programs and non-traditional advertising, subject to prior
     written approval by Metricom. Such programs include, but are not limited
     to:

               Ricochet Demo Program

               Event sponsorships (ASP sales force kick-off or
               jointly sponsored industry events)

               Joint PR Efforts

               Video News Releases/Promotional Videos

               Collateral Development

               Referral Programs

               In-box or other special promotions

               Coffee Sleeves/Bar Coasters Web Marketing Sales Force
               Incentives (trips, bonuses, etc.)

          (C) JUMP-START. This category allows ASP to use Incentive Funds for
     installed-based marketing programs ("Jump Starts") during the initial [**]
     offering the Service in any GSA. Upon written approval by Metricom of ASP's
     program, Metricom will credit ASP's Marketing Account with the Incentive
     Funds. Jump Starts can include, but are not limited to, email, direct mail,
     web-based, refer a friend and modem rebate programs.

          2. FUNDS. Metricom will make available fifty dollars ($[**]) for
     advertising and direct mail programs ("Ad Funds") plus [**] dollars ($[**])
     for market development programs ("MD Funds") for a total one-time amount of
     [**] dollars ($[**]) per new subscriber (excludes existing subscribers of
     the [**]Ricochet(TM) service) that ASP registers, with additional
     incentives available up to a maximum of [**] dollars ($[**]) ("Incentive
     Funds") for the year 2000. Ad Funds, MD Funds and Incentive Funds shall be
     referred to collectively as Co-op Funds. Co-op Funds are available
     exclusively to the ASP, however, ASP may elect to share its Co-op Funds
     with its Reseller(s) provided requests for reimbursement and the
     disbursement of such is handled by ASP.

          (A) MARKETING ACCOUNT. Upon execution of this Amendment One, Metricom
     will pre-build ASP's co-operative marketing account ("Marketing Account")
     based on ASP's Guaranteed ASP subscribers for the first [**]. Metricom will
     reconcile the difference between the actual number of ASP Subscribers and
     the Guaranteed ASP Subscribers at the start of the [**] and make any
     adjustments necessary. The account will be calculated on a [**] basis,
     using the information contained in the reports described in Section 5.2 of
     the Agreement. The account details will be provided to ASP on a monthly
     basis.

          (B) REIMBURSEMENT. Reimbursement will be at [**] percent of ([**]%) of
     pre-approved programs limited to the applicable earned Co-op Funds
     available in ASP's Marketing Account as of the date of the invoice
     submitted for reimbursement. All requests for reimbursement ("Claim") must
     be received by Metricom within [**] days after the ending run date of the
     program or [**], whichever occurs first.

<TABLE>
<S>                                <C>                                                          <C>
Rev. 082100eap                     Amendment One to Ricochet(TM)Channel Partner Agreement       Page 2 of 4
                                   for Authorized Service Providers Metricom Confidential
                                   and Proprietary Not for Use or Disclosure Outside of
Metricom Initials:                 Metricom or ASP Except Upon Written Approval                 GoAmerica Initials:
                  --------------                                                                                   ------------
</TABLE>

<PAGE>   3
  Confidential Materials omitted and filed separately with the Securities and
                Exchange Commission. Asterisks denote omissions.

     (C) INSUFFICIENT FUNDS. In the event ASP does not have sufficient funds in
the applicable fund category to cover the Claim, ASP may determine how much, if
any, of the available funds should be applied toward the Claim. ASP shall
indicate such rate on the applicable claim form.

     (D) CAP ON FUNDS. ASP's year 2000 Co-op Funds are capped at [**] dollars
($[**]). In the event ASP reaches this cap early in the Co-op Program and has
demonstrated successful programs, the parties agree to negotiate a new cap on
good faith.

     (E) EXPIRATION OF FUNDS. Co-op Funds accrued in the year 2000, must be
designated for a program by [**]. Such programs must be completed and funds
claimed by [**]. Complete proof of performance documents must be submitted by
[**]. ASP'S Marketing Account will be debited any unsubstantiated amounts. Any
unused funds shall be forfeit.

     3.   REQUIREMENTS OF ELIGIBILITY/LOSS OF ELIGIBILITY.

          (A)  ELIGIBILITY. In order to be eligible for Co-op Funds, ASP must
               meet the following requirements:

              (I) Adherence to the requirements set forth in this Amendment One;
              (II) Compliance with Metricom corporate graphics standards on logo
          usage, advertising guidelines and creative guidelines;
              (III) Written pre-authorization from Metricom Corporate Marketing
          for all campaigns and/or programs related to the Service;
              (IV) Submission of appropriate forms along with supporting
          documents as set forth in the Pre-Approval Process below;
              (V) Submission of appropriate proof of performance (creative, tear
          sheets, scripts, media schedule, etc.) and copies of invoices; and
              (VI) A Marketing account in good standing.

          (B)  LOSS OF ELIGIBILITY.

              (I) Metricom reserves the right to re-evaluate ASP's participation
          in the Co-op Program if ASP experiences an unusually high churn rate
          ([**] percent ([**]%) or higher). Such re-evaluation may result in
          freezing ASP's Market Account or termination of ASP's participation in
          the Co-op Program.

              (II) In the event of termination of the Agreement or this
          Amendment for any reason, including without limitation, failure to
          renew, ASP misrepresentation of Metricom or abuse of the Co-op
          Program, ASP's participation in the Co-op Program shall be terminated
          immediately and ASP shall have [**] thereafter in which to submit all
          claims for reimbursements which were submitted and approved for
          reimbursement prior to termination of the Agreement or this Amendment
          One. Any unused Co-op Funds will be forfeit.

     4.   PROGRAM PRE-APPROVAL PROCESS. ASP may commence submitting pre-approval
forms, samples of which are attached hereto as exhibits, once ASP has
accumulated sufficient Co-op Funds to cover the program for which ASP is
requesting reimbursement.

          1.   Fill out the appropriate pre-approval form (i.e., Co-op
               Advertising/Direct Mail, Marketing Development, or Jump-Start).
          2.   Submit the completed pre-approval form to the address set forth
               in Paragraph 6.
          3.   If approved, Metricom will return the reimbursement request form
               signed by an authorized representative of Metricom within [**]
               working days from receipt of request by Metricom. If the
               request is not approved, Metricom will return the form with
               recommended changes. ASP may resubmit the form after the
               recommended changes have been made.
<TABLE>
<S>                                <C>                                                          <C>
Rev. 082100eap                     Amendment One to Ricochet(TM)Channel Partner Agreement       Page 3 of 4
                                   for Authorized Service Providers Metricom Confidential
                                   and Proprietary Not for Use or Disclosure Outside of
Metricom Initials:                 Metricom or ASP Except Upon Written Approval                 GoAmerica Initials:
                  --------------                                                                                   ------------
</TABLE>

<PAGE>   4
  Confidential Materials omitted and filed separately with the Securities and
                Exchange Commission. Asterisks denote omissions.

     5.   CLAIM PROCEDURE. Metricom will process Claims as expeditiously as
possible. If the Claim is approved, ASP's Marketing Accounting will be debited
and a check for expenditures other than those purchased from Metricom, will be
mailed to ASP within four weeks after approval. Please allow three (3) weeks for
processing. A sample of the claim is attached hereto as an exhibit.

          1.   Submit a completed claim form with the applicable proof of
               performance (creative, tear sheet, scripts, media schedule,
               photographs, etc.), a program/campaign evaluation report and the
               applicable invoices to the address identified in Paragraph 6.

          2.   Reimbursement requests must be received by Metricom Corporate
               Department within [**] after the ending run date of a program or
               [**] whichever comes first.

     6.   FORM SUBMITTAL. Please submit completed Pre-Approval Forms and Claim
Forms, along with required attachments to:

                        Corporate Marketing
                        Attn:  Luz A. Berg
                        Metricom, Inc.
                        333 West Julian Street
                        San Jose, CA  95110
                        Phone:  408-282-4189
                        Fax:    408-282-3028
                        Email:  iberg@metricom.com

     7.   ADDITIONAL TERMS.

          (A)  The Co-op Program will be reviewed annually.

          (B)  Metricom reserves the right to modify or terminate the Co-op
               Program at any time.

          (C)  All material shall comply with all federal, state and local laws.
     Metricom disclaims all liability or responsibility for an advertising or
     promotion by ASP.

To the extent that this Amendment is inconsistent with the Agreement, this
Amendment shall govern and shall be deemed to amend and supersede the Agreement
as of the date hereof. All terms used herein and not otherwise defined shall
have the same meanings ascribed to them in the Agreement. Except as expressly
set forth herein, the Agreement remains in full force and effect.

IN WITNESS WHEREOF, the parties hereto have caused this amendment to be executed
by their duly authorized representatives effective on the 1st day of September,
2000.

<TABLE>
<CAPTION>
<S>                                                  <C>
METRICOM, INC.                                       GOAMERICA COMMUNICATIONS CORPORATION:

By:    /s/ John G. Wernke                            By:    /s/ Francis J. Elenio

Name:  John G. Wernke                                Name:  Francis J. Elenio

Title: Sr. V.P. Marketing and Sales                  Title: CFO

Date:  8/31/00                                       Date:  8/31/00
</TABLE>

<TABLE>
<S>                                <C>                                                          <C>
Rev. 082100eap                     Amendment One to Ricochet(TM)Channel Partner Agreement       Page 4 of 4
                                   for Authorized Service Providers Metricom Confidential
                                   and Proprietary Not for Use or Disclosure Outside of
Metricom Initials:                 Metricom or ASP Except Upon Written Approval                 GoAmerica Initials:
                  --------------                                                                                   ------------
</TABLE>

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