Document:

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                    AMENDED AND RESTATED OPERATING AGREEMENT

         THIS AMENDED AND RESTATED OPERATING AGREEMENT (the "Agreement") is
dated as of the 25th day of February, 2000, by and between Dobson Cellular
Systems, Inc., on behalf of itself and its Affiliates listed in Schedule 1
hereto (individually and collectively, "Dobson") and ACC Acquisition LLC, on
behalf of itself and its Affiliates listed in Schedule 2 hereto (individually
and collectively, "ACC"). Dobson and ACC are sometimes referred to,
individually, as a "Party" and together as "Parties."

                                  R E C I T A L

         WHEREAS, each of Dobson and ACC desires to make arrangements to
facilitate the provision of voice and voice-related mobile wireless
radiotelephone service to its Customers through the wireless radiotelephone
facilities of the other Party in a manner providing a common look and feel
and the appearance of seamlessness between the Parties' facilities, in
accordance with the terms of this Agreement; and

         WHEREAS, the parties hereto entered into an Operating Agreement,
dated as of January 31, 2000 (the "Original Agreement");

         NOW, THEREFORE, in consideration of the premises and the mutual
promises herein set forth and intending to be legally bound hereby, the
Parties hereby agree, and the Original Agreement is hereby amended and
restated in its entirety, as follows:

                                   ARTICLE I.

                                   DEFINITIONS

         As used in this Agreement, the terms below shall have the following
meanings:

         ACC has the meaning set forth in the first paragraph of this Agreement.

         ACC SERVICE AREA means the geographic area in which ACC and those of
its Affiliates now or hereafter listed on Schedule 2 provide Service.

         ACC SYSTEM means the facilities owned and/or operated by ACC with
which it provides Service anywhere within the ACC Service Area.

         ACC TDMA SYSTEM means that portion of the ACC System located in the
markets listed on Exhibit A.

         ADOPTED FEATURES means the Core Features and the Future Core Features.

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         AFFILIATE means, with respect to a Party, any facilities-based CMRS
operating company that (a) is controlled by or under common control with the
Party, (b) is an entity in which the Party has at least fifty percent (50%)
voting interest, (c) shares switching facilities with the Party, (d) is
managed by the Party, or (e) is providing Service utilizing CMRS spectrum it
has acquired from a Party; provided, that AT&T Wireless and Dobson
Communications Corporation and their respective Affiliates shall be deemed
not to be Affiliates of ACC for purposes of this Agreement.

         APPROVED CIBERNET NEGATIVE FILE GUIDELINES means the negative file
guidelines appearing in the CIBER Record in effect from time to time.

         AT&T WIRELESS means AT&T Wireless Services, Inc., individually.

         AUTHORIZED RECEIPT POINT or ARP means the location or address of the
Party designated by the Home Carrier as the delivery point for its CIBER
records and authorized agent for performing CIBER edits.

         AUTHORIZED ROAMER means a Roamer using equipment and an assigned
telephone number with the NPA/NXX combinations listed in accordance with
Article VI below for whom the Serving Carrier has not received a negative
notification in accordance with the provisions of this Agreement.

         BTA means a geographic area designated by the FCC as a Basic Trading
Area in which a PCS System may be operated, as described more specifically in
47 CFR 24.202 of the FCC rules and regulations.

         CELLULAR SYSTEM means a wireless communication system that is
operated pursuant to authority granted by the FCC under 47 CFR Part 22.

         CIBER means Cellular Intercarrier Billing Exchange Record.

         CIBER RECORD means the publication prepared by CIBERNET Corporation,
a wholly-owned subsidiary of the Cellular Telecommunications Industry
Association, as a service to the wireless communications industry. Unless
specifically provided otherwise in this Agreement, all words and phrases
defined in the CIBER Record shall have the meaning herein that they have
therein.

         CLEARINGHOUSE means that entity which provides for the exchange of
CIBER records and performs industry accepted CIBER edits, including edits to
verify Industry Negative File information.

         CMRS means any Commercial Mobile Radio Service as authorized by the
FCC.

         CORE FEATURES means the Features that, as of the Effective Date,
Dobson and ACC have agreed to implement and maintain in order to create a
common look and feel and seamless subscriber service between the Dobson
System and the ACC System, as evidenced by their listing in Schedule E-1 to
Exhibit E attached hereto.

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         CUSTOMER means an end-user of Service with which a Party has entered
into an agreement to provide such Service, regardless of whether such Service
is to be provided through the facilities of such Party.

         DEFAULT has the meaning set forth in Section 13.1.

         DOBSON has the meaning set forth in the first paragraph of this
Agreement.

         DOBSON SYSTEM means the facilities owned and/or operated by Dobson
with which it provides Service anywhere within the United States.

         EFFECTIVE DATE means the Closing Date under the Agreement and Plan
of Merger dated as of October 5, 1999 among ACC Acquisition LLC, ACC
Acquisition Co. and American Cellular Corporation.

         ESN means the Electronic Serial Number that is encoded in a wireless
telephone set by the manufacturer and which is broadcast by such telephone.

         EQUIPMENT means phones, handsets, transmitters, terminals, control
equipment and switches and other hardware and software required or useful to
use Service, including phones and handsets Customers use in connection with
Service.

         FCC means the Federal Communications Commission and any successor
agency or authority.

         FEATURES means voice and voice-related features and services
available from a Party through its mobile wireless telecommunication system.

         FUTURE CORE FEATURES means the Features that are agreed upon as of
the date hereof (as evidenced by their listing on Schedule E-2 to Exhibit E
attached hereto) or in the future by the Parties pursuant to Section 10.3.2
as necessary to maintain a common look and feel, and seamless subscriber
service, between the Dobson System and the ACC System, and which the Parties
agree will be supported by both of their Systems, on the terms and conditions
of this Agreement, in the same manner as the Core Features. Once implemented,
a Future Core Feature shall be deemed a Core Feature for purposes of this
Agreement.

         GENERAL AVAILABILITY means the date upon which the technology and
products that comprise any Future Core Features are commercially available at
a commercially reasonable price from the vendors of such technology and
product(s), and such Feature has successfully completed and passed the first
application in the System of the Party seeking to implement such features and
is ready for live commercial deployment.

         HOME CARRIER means a Party who is providing Service to its
registered Customers.

         HOME SERVICE AREA means the geographic area in which a Home Carrier
is licensed to provide Service.

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         INDUSTRY NEGATIVE FILE means the negative file maintained by the
authorized Clearinghouses in accordance with approved CIBERNET Negative File
Guidelines.

         MIN means the "Mobile Identification Number" which is assigned by a
Home Carrier to each of its registered Customers.

         MSA means a geographic area designated by the FCC as a Metropolitan
Service Area in which a Cellular System may be operated, as described more
specifically in 47 CFR 22.909 of the FCC rules and regulations.

         MTA means a geographic area designated by the FCC as a Major Trading
Area in which a PCS System may be operated, as described more specifically in
47 CFR 24.202 of the FCC rules and regulations.

         NPA/NXX COMBINATIONS means the six-digit numerical combinations
assigned by regulatory authorities to identify the area code and telephone
number prefix for Service.

         PCS SYSTEM means a wireless communication system that is operated
pursuant to authority granted by the FCC under 47 CFR Part 24.

         PARTIES and PARTY have the meanings set forth in the first paragraph
of this Agreement.

         ROAMER means a Customer of one Party who seeks Service from the
other Party within the geographic area served by the other Party, regardless
of whether Service also is offered in that area by the Party whose Customer
is seeking Service.

         RSA means a geographic area designated by the FCC as a Rural Service
Area in which a Cellular System may be operated, as described more
specifically in 47 CFR 22.909 of the FCC rules and regulations.

         SERVICE means telecommunications service for the transmission and
reception of voice and voice-related features provided by means of radio
frequencies that are or may be licensed, permitted or authorized now or in
the future by the FCC for use by a Cellular System or a PCS System, and in
respect of which service the user equipment is capable of and intended for
usage during routine movement, including halts at unspecified points, at more
than one location throughout a wide area public or private wireless network.
Unless otherwise specifically agreed by the Parties, Service shall include
personal base station services but, by way of example and without limitation,
does not include fixed wireless services, two-way messaging wireless services
(NBPCS), video broadcasting wireless services, television services (whether
cable, broadcast or direct broadcast satellite), broadcast radio services,
interactive informational or transactional content services such as on-line
content network services, Internet based services, satellite based
communications services, and air to ground communications services.

         SERVING CARRIER means a Party who provides Service for registered
Customers of another Party while such Customers are in the geographic area
where the Serving Carrier, directly or through subsidiaries, provides Service.

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         SYSTEM means the Dobson System or the ACC System, and SYSTEMS means
the Dobson System and the ACC System.

         TDMA means the present and future North American Time Division
Multiple Access standard which is set by the Telecommunications Industry
Association (which at the Effective Date is IS-136), which is the essential
radio frequency technical method for digital wireless telephone operations
upon which the Service and equipment related thereto are designed to operate.

         USER INTERFACE means the process, functional commands, and look and
feel by which a Customer operates and utilizes the Adopted Features,
including the sequence and detail of specific commands or service codes, the
detailed operation and response of Equipment to the sequence of keys pressed
to effect subscriber Equipment functions, and the response of subscriber
Equipment to the activation of these keys, or in response to signals or data
from either the ACC System or the Dobson System. Furthermore and for greater
certainty, such definition shall include without limitation, the manner in
which information is displayed on the screen of a phone used for Adopted
Features, announcement tones or messages occur, and service or feature codes
that must be dialed. The origins of the information presented to the user may
be the user Equipment, or the Dobson System or the ACC System, or both.

                                   ARTICLE II.

                              PROVISION OF SERVICE

         2.1 Each Party shall provide, to any Authorized Roamer who so
requests, in accordance with its own ordinary requirements, restrictions,
practices, and tariffs, if applicable, and with the terms and conditions of
this Agreement, any and all types of Service that such Party provides to its
own Customers within its Service Area. At a minimum, such Service shall
include voice communications capability, as well as any other types of
Service required by this Agreement, including without limitation Article X
hereof.

         2.2 Notwithstanding anything in this Agreement to the contrary, a
Serving Carrier may suspend or terminate Service to an Authorized Roamer in
accordance with the terms of its own ordinary requirements, restrictions,
practices, and tariffs, if any, but such suspension or termination shall not
affect the rights and obligations of the Parties for Service furnished
hereunder prior to such termination or suspension.

         2.3 In connection with its Service to Roamers, no Serving Carrier
shall use recorded announcements or other inducements for an Authorized
Roamer to discontinue the Service of its Home Carrier or, unless otherwise
authorized herein, Roamer's use of a Serving Carrier's system.

         2.4 In the event that an operating entity becomes an Affiliate of a
Party after the date of this Agreement, such Party may, upon thirty (30) days
prior written notice to the other Party, add such operating entity to
Schedule 1 or Schedule 2, as the case may be, at the expiration of which
thirty-day period, in which event (a) the Customers of such entity shall be
entitled to

                                       -5-

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Service as Roamers from the other Party on the terms and conditions of this
Agreement and (b) such operating entity shall provide Service to Customers of
the other Party who are Authorized Roamers, although the other Party is not
obligated to request such Service or to require its Customers to request such
Service. Notwithstanding the foregoing, the other Party, in its reasonable
discretion, may specify, by delivering written notice thereof prior to the
expiration of the thirty day period, that any Affiliate so added shall not be
entitled to preference as a Serving Carrier as otherwise provided in Section
2.5. Upon the addition to or deletion from Schedule 1 or 2 of any operating
entity pursuant to this Section 2.4, Exhibits A and B shall automatically be
revised accordingly, except that either Party may, in its sole discretion,
specify that an addition by either Party to Schedule 1 or 2 shall not be
given effect for any or all purposes of Section 2.5.

         2.5

                  2.5.1 Dobson, in its capacity as Home Carrier, shall cause
substantially all of its Customers, when roaming in the markets operated by
ACC that are listed on Exhibit A, to normally seek Service as Roamers from
ACC prior to seeking Service from any other carrier. ACC, in its capacity as
Home Carrier, shall cause substantially all of its Customers, when roaming in
the markets operated by Dobson that are listed on Exhibit B, to normally seek
Service as Roamers from Dobson prior to seeking Service from any other
carrier.

                  2.5.2 As a condition to the right of a Party under Section
2.5.1 to be the preferred provider of Service to Customers of the other
Party, the market being served by the Serving Carrier shall (i) have fully
installed a TDMA-based system, including all Core Features, (ii) be fully
interoperable in accordance with Sections 10.6, 10.7, and 10.8, and (iii)
otherwise have met, and be in compliance with, all terms and conditions of
this Agreement.

         2.6 ACC shall join and remain a member of the North American
Cellular Network throughout the term of this Agreement.

                                  ARTICLE III.

                                RELATED SERVICES

         3.1 Upon request by ACC, Dobson and ACC shall consider implementing
a common System Identification Number (SID) for markets operated by the
respective Parties in the same general vicinity or taking other steps to
suppress the roaming indicator on a Customer's handset from lighting to
indicate that the Customer is roaming in such markets, but each Party may, in
its sole discretion, decide whether to implement such measure.

         3.2 Each Party, within the geographic areas in which such Party
provides Service, will provide Service without any additional toll charge
throughout an area (a so-called "home calling area") that is of a size at
least reasonably comparable to the area within which toll-free calls placed
through facilities that are exclusively land-based are available.

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                                   ARTICLE IV.

                                CUSTOMER SERVICE

         4.1 The Parties shall use commercially reasonable efforts to develop
and implement systems enabling each Party, as Serving Carrier, to route to a
Customer's Home Carrier any 611 customer service call received from a
Customer of the other Party while roaming on the Serving Carrier's System.

                                   ARTICLE V.

                                     CHARGES

         Each Home Carrier, whose Customers (including the Customers of its
resellers) receive service from a Serving Carrier as Authorized Roamers under
this Agreement, shall pay to the Serving Carrier who provided such service
100% of the Serving Carrier's charges for CMRS and one hundred percent (100%)
of the toll charges pursuant to Exhibit C. The amount of the charges for the
use of each Serving Carrier's Service are set forth in Exhibit C attached to
this Agreement.

                                   ARTICLE VI.

                             EXCHANGE OF INFORMATION

         6.1 The Parties shall furnish to each other, in the format of
Exhibit D to this Agreement, the valid NPA/NXX combinations used by their
respective Customers. These combinations shall be accepted by the other
Party. Each NPA/NXX combination is and shall be within the entire line range
(0000-9999), or a specified portion thereof. The minimum line range to be
exchanged by the Parties shall be 1,000 line numbers. Each Party shall be
responsible for all billings otherwise properly made under this Agreement to
any number listed by such Party within the range or ranges specified by it in
Exhibit D. Additions, deletions, or changes to NPA/NXX combinations and line
number range(s) for the Home Carrier's Customers may be made upon at least
fifteen (15) days prior written notice to the Serving Carrier. Such notice
shall be in the form attached as Exhibit D to this Agreement and shall
include the requested effective date for the addition, deletion or change.

         6.2 [Reserved]

         6.3 Each Party hereby agrees to indemnify the other Party, together
with its partners and any and all of their officers, directors, employees,
agents and/or affiliates, against, and hold them harmless from, any and all
claims, suits, demands, losses and expenses, including reasonable attorneys'
fees and disbursements, which may result in any way whatsoever from the
indemnified Party's denial of Roamer or local Service to any NPA/NXX
combination which has been listed by the indemnifying Party as not being
authorized to receive Service; provided that (i)

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the person seeking indemnification (the "Indemnified Person") provides notice
of such claim promptly after its discovery to the Party from which
indemnification is sought (the "Indemnifying Person") and in any event the
Indemnifying Person will be released from any obligation hereunder to the
extent it is prejudiced by any delay in the delivery of such notice, (ii) the
Indemnifying Person shall have the right to assume the defense of such claim,
(iii) the Indemnified Person shall provide such reasonable assistance and
cooperation in the defense of such claim as is requested by the Indemnifying
Person, and (iv) the Indemnified Person shall not settle or compromise any
such claim without the prior written consent of the Indemnifying Person.

         6.4   [Reserved]

         6.5   Upon the implementation of wireless number portability in any
portion of either the Dobson System or the ACC System, the Parties shall
cooperate in establishing an alternative method for exchanging ESN and/or
NPA/NXX information required to permit roaming by the other Party's Customers in
their respective systems.

                                  ARTICLE VII.

                                      FRAUD

         7.1   The Parties will cooperate and, as necessary, supplement this
Agreement in order to minimize fraudulent or other unauthorized use of their
systems. If any Party reasonably decides that, in its sole judgment, despite due
diligence and cooperation pursuant to the preceding sentence, fraudulent or
other unauthorized use has reached an unacceptable level of financial loss and
is not readily remediable, such Party may suspend the use of applicable NPA/NXX
combinations, in whole or in part, pursuant to the terms of this Agreement.

         7.2   Each Party shall take reasonable actions to control fraudulent
Roamer usage, including without limitation using either (i) a positive
validation/verification ("PV") system provided by a mutually agreed upon
validation/verification service under which the ESN and/or NPA/NXX used in a
call in the Serving Carrier's system is compared against a list of Authorized
Roamers or (ii) SS-7 connections through a network of carriers. The Parties
shall work together in good faith to designate and implement a system as
specified in the preceding sentence and enhancements thereto or alternative
systems as they shall agree in the future. The Home Carrier shall have no
responsibility or liability for calls completed by a Serving Carrier without
obtaining positive validation/verification as required herein.

         7.3   In addition to other procedures set forth in this Agreement, a
Home Carrier may notify a Serving Carrier by facsimile, with written
confirmation, that certain NPA/NXX combinations are not to receive Service.
Any calls completed using such NPA/NXX combinations made one full business
day or more after such notice has been given shall be the sole responsibility
of the Serving Carrier, and the Home Carrier shall not be charged any amount
for such calls.

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         7.4   Each Serving Carrier shall use commercially reasonable efforts
to provide each Home Carrier with real-time visibility of call detail records
delivered through a network compatible with AT&T Wireless's network. Such
information shall be delivered within one hour of the applicable call. In the
event that the Serving Carrier provides such a real-time visibility system, the
Serving Carrier shall not be liable in any event for a temporary failure of the
system unless the Serving Carrier has been notified of such failure by the Home
Carrier and the Serving Carrier does not take commercially reasonable steps to
remedy the failure. If the Serving Carrier has been so notified and has failed
to take such commercially reasonable steps, the Serving Carrier shall be liable
for all unauthorized usage attributed to Home Carrier's subscribers during the
period from the time Serving Carrier was notified of the problem to the time
that the problem has been resolved to the reasonable satisfaction of the Home
Carrier.

         7.5 For purposes of notification under this Article VII, the following
addresses and facsimile numbers shall be used:

         If to Dobson:               Dobson Cellular Systems, Inc.
                                     c/o Dobson Communications Corporation
                                     13439 North Broadway Extension
                                     Oklahoma City, OK 73114
                                     Attn: G. Edward Evans
                                     Tel. No. 405-529-8500
                                     Fax No. 405-529-8515

         If to ACC:                  ACC Acquisition LLC

                                     c/o Dobson JV Company
                                     13439 North Broadway Extension
                                     Oklahoma City, OK 73114
                                     Attn: G. Edward Evans
                                     Tel. No. 405-529-8500
                                     Fax No. 405-529-8515

         Each Party may change the names, addresses and numbers set forth above
by providing notice to the other Party as provided in Article XVI below.

                                  ARTICLE VIII.

                                     BILLING

         8.1   Each Home Carrier shall be responsible for billing to, and
collecting from, its own Customers all charges that are incurred by such
Customers as a result of service provided to them as Authorized Roamers by the
Serving Carrier. The Home Carrier shall also be responsible for billing its
Customers for, and remitting to, the Federal Government all federal excise tax
that may be due in connection with the service being billed by it to its
Customers. While the Serving Carrier will be responsible for the computation and
remittance of all state and local taxes, each

                                     -9-
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Home Carrier shall be liable to the Serving Carrier for all such state and
local taxes remitted by the Serving Carrier, for Authorized Roamers
regardless of whether these amounts are paid to the Home Carrier by its
Customers.

         8.2   Each Serving Carrier who provides Service to an Authorized Roamer
pursuant to this Agreement shall forward Roamer billing information, within five
business days of the call date, in accordance with the procedures and standards
set forth in the CIBER Record to the Home Carrier's Authorized Receipt Point.
CIBER Type 50 and CIBER Type 70 records shall not be accepted without mutual
signed agreement and if such mutual agreement is reached it will be attached to
this Agreement. Any future revisions of the CIBER Record or additional record
types must be mutually agreed upon before implementation. In the event the
parties use the CIBERNET Net Settlement Program, or alternative settlement
program such information must be in a format in compliance with the CIBER Record
requirements or agreed upon format.

         8.3   Where the Authorized Roamer billing information required to be
provided by the Serving Carrier in accordance with Section 8.2 above is not in
accordance with the CIBER Record, the Home Carrier may return a record to the
Serving Carrier as provided in the CIBER Record. Returning the defective record
will be in accordance with CIBER Record established procedures. The Serving
Carrier may correct the defective record and return it to the Home Carrier for
billing, provided that the time period from the date of the Service call at
issue to the receipt of the corrected record does not exceed sixty (60) days.

         8.4   No credit for insufficient data or defective records shall be
permitted except as provided in Section 8.3 above, unless mutually agreed upon
by both Parties.

         8.5   Each Home Carrier may at its discretion perform any necessary
edits at its Clearinghouse on incollect or outcollect call records to ensure
compliance with the terms of this Agreement.

                                   ARTICLE IX.

                                   SETTLEMENT

         9.1   Each Party will settle its accounts with the other Parties on the
basis of billing information received as described in this Article IX. In the
event both Parties use a net financial settlement procedure, the Parties shall
not submit a paper invoice but will make payments in accordance with such net
financial settlement procedures provided that the Parties may submit call
records for payment that relate to calls made more than sixty (60) days from the
date of the call if such call was the subject of a dispute or investigation
regarding fraudulent or unauthorized use.

         9.2   If an incorrect roaming rate is charged by the Serving Carrier to
the Home Carrier, the Serving Carrier shall refund all amounts in excess of the
contract rate back to the Home Carrier within forty five days of notification by
the Home Carrier. Each carrier shall have ninety (90) days from the end of the
settlement period to invoice for amounts in excess of the contract

                                    -10-
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rate. The Home Carrier will send a collection letter within sixty (60) days
of the invoice date, within ninety (90) days of the invoice date, and within
one hundred (120) days of the invoice date. If the invoice remains unpaid
after one hundred twenty (120) days from the original invoice date, the Home
Carrier may withhold the amounts from the CIBERNET Net Settlement Program or
alternative settlement program.

         9.3   In the event that either Party does not use a net financial
settlement procedure, the billing and payment for charges incurred under this
Agreement shall be as set forth below.

               9.3.1   The parties shall determine amounts owed to each other
for Service provided to Roamers in one-month periods with such period beginning
on the sixteenth day of each calendar month and ending on the fifteenth day of
the following month in which Service is provided. The end of this Period shall
be referred to as "Close of Billing."

               9.3.2   The Parties shall send each other an invoice for
Services used under this Agreement within fifteen (15) days after the Close of
Billing.

               9.3.3   Each invoice shall contain the following information.

                       a.  Billing period used by Serving Carrier
                       b.  Batch sequence number
                       c.  Serving and Home Carrier System Identification Number
                       d.  Air Service charges
                       e.  Total toll charges (both intrastate and interstate)
                       f.  All other charges and credits
                       g.  Total taxes
                       h.  Total charges

               9.3.4   Payment on such invoices shall be made in the form of a
check or a wire transfer which must be received by the invoicing party within
thirty (30) days from the date of the invoice. Late payments shall be charged
with a late payment fee of one and one half percent (1.5%) of the outstanding
balance for each thirty-day period (or portion thereof) that such payments are
late.

               9.3.5   Each Party may offset the amount owed to the other Party
under this Agreement and a single payment of the balance to the Party entitled
to receive such balance shall be made.

         9.4   If the Serving Carrier provides pre-call validation of the Home
Carrier's Customers, the Home Carrier agrees to implement Negative File
Suppression at the Clearinghouse and the CIBERNET Negative File Guidelines and
procedures do not apply.

                                    -11-
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                                   ARTICLE X.

                                INTEROPERABILITY

         10.1  The Parties agree that their respective obligations under this
Agreement related to the interoperability of the Dobson System and the ACC TDMA
System shall be construed in accordance with the following general principles:

               10.1.1  The Parties agree, confirm and acknowledge that one of
their primary objectives in entering into this Agreement is to promote the
establishment and operation throughout the United States of a mobile wireless
service that is TDMA-based and that will appear to their respective subscribers
as a single mobile wireless network with a common User Interface pertaining to
the Adopted Features, and that they intend to achieve such purpose and objective
as set forth in, and subject to the terms and conditions of, this Agreement.
Adopted Features shall be made available to all Customers of a Party when
roaming in the Dobson System or the ACC TDMA System, subject to the terms of
this Agreement. Each Party shall use good faith efforts, when implementing any
software or other System change or upgrade, to confirm the continued
availability of the Feature interoperability provided for herein, and in the
event of any interference with any Feature interoperability shall work
expeditiously to restore required functionality. Without limiting the generality
of the foregoing, in the event the Authentication Fraud Protection Feature (or
any subsequent or comparable fraud protection Feature) is disabled or affected
by any network change so as to interfere with its interoperability, the Party
responsible for such network shall restore interoperability within 48 hours of
notification from the affected Party.

               10.1.2  The Parties agree that each of their respective
obligations, duties, rights and entitlements pursuant to this Agreement shall be
interpreted, to the extent such interpretation is required to resolve any
dispute or uncertainty concerning this Agreement, in a manner that is reasonably
consistent with, and which reasonably supports, the purpose and objective of
this Agreement as set out in Section 10.1.1.

               10.1.3  The Parties agree that they each shall, in good faith,
work together, cooperate, and use the rights that they each have granted the
other under this Agreement for the purposes set out in Section 10.1.1 and on the
terms and conditions of this Agreement.

         10.2  The Parties agree to implement TDMA-based systems as follows:

               10.2.1  The Parties each acknowledge and confirm that their
digital standard for, in the case of Dobson, the Dobson System and, in the case
of ACC, the ACC TDMA System, is currently (as of the Effective Date) TDMA.

               10.2.2  The Parties shall deploy TDMA throughout the ACC TDMA
System and the Dobson System within twelve (12) months after the date of this
Agreement. The Parties shall use commercially reasonable efforts to promote the
use of TDMA-based communications devices among their respective Customers who
roam on the Dobson System or the ACC TDMA System, as the case may be.

                                    -12-
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         10.3  Each of the Parties agrees that it shall operate and support its
TDMA-based System, to the extent installed, to ensure that the other Party's
Customers can use the Adopted Features when roaming on the Serving Carrier's
TDMA-based System in the same manner that such Customers use such Adopted
Features on the Home Carrier's TDMA-based System.

               10.3.1  CORE FEATURES. Each Party shall, at its own expense,
implement the Core Features in the Dobson System, in the case of Dobson, and in
the ACC TDMA System, in the case of ACC, as soon as reasonably practicable and
in any event within one (1) year after the Effective Date. Thereafter, Core
Features shall be implemented at the time any TDMA-based system is placed into
operation.

               10.3.2  FUTURE CORE FEATURES. The Future Core Features shall be
those features set forth on Schedule E-2 to Exhibit E attached hereto or those
features that are agreed upon by the Parties from time to time after the
execution of this Agreement. Each Party shall, at its own expense, implement
such Future Core Features within one (1) year after the General Availability of
such Future Core Features, provided that, and subject to such Party's
determination, in its sole and absolute discretion, that such implementation is
both financially feasible and economically viable, and consistent with such
Party's objective of maximizing its financial performance. In the event that a
Party opts not to adopt a Future Core Feature in accordance with this Section
10.3.1, it shall promptly notify the other Party of that decision. Future Core
Features shall be implemented in accordance with this Section in the areas
specified for each respective Party in Section 10.3.1.

               10.3.3  The Parties shall use commercially reasonable efforts
to comply with the network performance standards with respect to the Adopted
Features that are set out in Schedule E-3 to Exhibit E attached hereto.

         10.4  Neither Party shall provide the other Party's Customers with
Service inferior in quality to that provided to its own Customers. Each Party
shall provide Service to Customers of the other Party of a quality level, based
on criteria customarily used to evaluate the performance of wireless voice
systems, comparable to or exceeding industry norms. Any assessment of "quality"
shall be with reference to the System's performance as a whole within a specific
MSA, RSA, or BTA, as the case may be, and shall be over such a period of time as
reasonably necessary to yield an accurate depiction of System "quality" taking
into account all of the variables which may affect System performance.

         10.5  In order to facilitate performance by each of the Parties of
their obligations under this Article X, the Parties agree to exchange and
share information with each other as follows, except that nothing contained
herein shall be construed to require a Party to exchange information that the
Party considers confidential or proprietary.

               10.5.1  Subject to Article XVII of this Agreement, the Parties
shall provide each other, on a reasonably prompt basis, with all information and
materials that either has a right to disclose that is necessary to meet the
interoperability standards set forth in this Article X, including without
limitation the following information:

                                    -13-
<PAGE>

               System Engineering:

               -   Minimum Standards for Systems

               Features:

               -   Capability description of present Core Features and
                   other Features
               -   User Interface (codes)
               -   Implementation procedures
               -   Roaming requirements
               -   Feature functionality design documents

               Research and Development:

               -   operational test results
               -   operational defects and bugs
               -   remedial/back-up plans
               -   operational, functional and technical specifications
               -   all related documentation
               -   systems integration

               10.5.2  Each Party agrees that it shall, in performing its
obligations to provide the other Party with information in accordance with
Section 10.5, act reasonably, and in good faith toward the other Party.

               10.5.3  Nothing contained herein is intended or should be
construed to constitute the transfer or grant by one Party to the other of any
ownership, license, or other rights of or to any trade secret, know-how, or
other intellectual property by one Party to the other.

         10.6  Each Party shall provide for automatic call delivery for
Customers of the other Party who are Roamers in such Party's system. To this
end, each Party shall continuously provide the hardware, software and
transmission facilities required for such call delivery either directly
between the systems of the Parties or indirectly through a separate network
of wireless communications carriers. The hardware, software and transmission
facilities provided by each Party hereunder shall at all times be operated
and maintained to provide the most efficient level of service that is
technically feasible and commercially reasonable to minimize transmission
errors and Service interruptions.

         10.7  If the Parties have implemented linking facilities as
contemplated in Section 10.8, the Serving Carrier shall automatically
hand-off to the Home Carrier, and as requested shall automatically accept
hand-off from the Home Carrier in order to provide Service as specified in
Article II, calls to or from a Customer of the Home Carrier in accordance
with the hand-off procedures established for such linking facilities. To this
end, each Party shall continuously provide the hardware, software and
transmission facilities required for such call hand-off either

                                    -14-
<PAGE>

directly between the systems of such Home and Serving Carrier or indirectly
through a separate network of wireless communications carriers. The hardware,
software and transmission facilities provided by each Party hereunder shall at
all times be operated and maintained to provide the most efficient level of
service that is technically feasible and commercially reasonable to minimize
transmission errors and Service interruption.

         10.8  The Parties will work together to evaluate the economic advantage
of various switch linking options to interconnect and facilitate networking of
the Parties' respective Systems as required by this Agreement. Should the
Parties agree to install and maintain linking facilities, the cost of the
linking facilities shall be allocated pursuant to the following provisions:

               10.8.1  Dobson and ACC will each pay one-half of the equipment
costs for the establishment of microwave facilities to link the Parties'
respective Systems for the purposes of automatic call delivery and automatic
call hand-off. Each Party is solely responsible for the costs of preparing its
own facilities for the System link.

               10.8.2  Equipment costs for the establishment of a landline
link (T-1) to link the Parties' respective Systems together for these purposes
shall be split between the Parties as follows:

                       (a) Dobson and ACC shall each pay one-half of the cost
for the installation, use, modification, or discontinuance of the linking
facilities. Each party is solely responsible for all costs to prepare its own
facilities for the link between the Systems.

                       (b) For ease of administration, Dobson will order and
be the customer of record ("COR") for such facilities. ACC will reimburse
Dobson monthly for its share of the recurring costs of such facilities. The
COR shall be responsible for invoicing the other Party for its share of the
costs, with payment due within 30 days of receipt of the invoice.

               10.8.3  The Parties agree that this Section 10.8 relates only
to those costs necessary to establish the referenced facilities. This section is
not applicable to the allocation of costs with respect to the provision of
service for each Party's Customers.

         10.9  The Parties agree that the revenues and costs for a call belong
to the Party whose System operates the originating cell site (the "Bill and Keep
System").

                                   ARTICLE XI.

                         REPRESENTATIONS AND WARRANTIES

         11.1  Dobson hereby represents and warrants to ACC that:

               11.1.1  Dobson Cellular Systems, Inc. is a corporation duly
organized, validly existing, and in good standing under the laws of the State of
Oklahoma. Dobson Cellular Systems, Inc. has all requisite power and authority to
execute and deliver this Agreement and to

                                    -15-
<PAGE>

cause this Agreement to be the binding obligation, to the extent provided
herein, of those of its Affiliates listed on Schedule 1 or added to Schedule
1 hereafter in accordance with Section 2.4.

               11.1.2  This Agreement is the legal, valid, and binding
obligation of Dobson Cellular Systems, Inc., enforceable against Dobson Cellular
Systems, Inc. in accordance with its terms, except that such enforceability may
be subject to (a) bankruptcy, insolvency, reorganization, moratorium, or other
similar laws now or hereafter in effect relating to creditors' rights generally
and (b) equitable principles of law and the discretion of any court or arbitral
body before which any related proceeding may be brought.

               11.1.3  The execution, delivery, and performance of this
Agreement by Dobson Cellular Systems, Inc. does not and will not conflict with
or result in a material default, suspension, or termination of any agreement,
contract, obligation, license, or authorization with or granted by any third
party or governmental body.

         11.2  ACC hereby represents and warrants to Dobson that:

               11.2.1  ACC is a limited liability company duly organized,
validly existing, and in good standing under the laws of the State of Delaware.
ACC has all requisite power and authority to execute and deliver this Agreement
and to cause this Agreement to be the binding obligation, to the extent provided
herein, of those of its Affiliates listed on Schedule 2 or added to Schedule 2
hereafter in accordance with Section 2.4.

               11.2.2  This Agreement is the legal, valid, and binding
obligation of ACC, enforceable against ACC in accordance with its terms,
except that such enforceability may be subject to (a) bankruptcy, insolvency,
reorganization, moratorium, or other similar laws now or hereafter in effect
relating to creditors' rights generally and (b) equitable principles of law
and the discretion of any court or arbitral body before which any related
proceeding may be brought.

               11.2.3  The execution, delivery, and performance of this
Agreement by ACC does not and will not conflict with or result in a material
default, suspension, or termination of any agreement, contract, obligation,
license, or authorization with or granted by any third party or governmental
body.

                                  ARTICLE XII.

                  TERM, TERMINATION AND SUSPENSION OF AGREEMENT

         12.1  This Agreement shall have a term commencing on the Effective Date
and continuing for a period of twenty (20) years; PROVIDED, that the provisions
of Section 2.5 shall terminate on the earlier of (i) the fifth anniversary of
the Effective Date and (ii) termination of the roaming preference obligations of
Dobson under Section 8.2(a) of the LLC Agreement. Thereafter, this Agreement
shall continue in force on a month-to-month basis unless either party terminates
the Agreement by written notice to the other party given at least 90 days prior
to the

                                    -16-
<PAGE>

date of termination. Otherwise, this Agreement may be terminated or suspended
only as provided in this Article XII.

         12.2  This Agreement may be terminated or suspended by either Party
immediately upon written notice to the other of a Default (as defined in Section
13.1) by the other Party. In addition, either Party may suspend this Agreement
immediately upon written notice to the other Party pursuant to Section 13.1.1 of
the existence of a breach of this Agreement, whether or not such breach
constitutes a Default, which materially affects the Service being provided to
Customers of the non-breaching Party. While any suspension of this Agreement,
whether in part or in whole, is in effect, the obligations of the Parties shall
be only those that survive termination and to work together to resolve as
expeditiously as possible any difficulty that resulted in a suspension. At such
time as the Party originally giving notice of suspension concludes that the
problem causing the suspension has been resolved, that Party shall give to the
other written notice to this effect. This Agreement shall resume in full effect
within five (5) business days after the Parties have mutually agreed that the
problem has been resolved.

         12.3  The Parties shall cooperate to limit the extent and effect of any
suspension of this Agreement to what is reasonably required to address only the
cause of such suspension.

         12.4  In the event that a Party transfers control of an Affiliate
listed in Schedule 1 or Schedule 2, as the case may be, the Party shall
provide at least four months' prior written notice to the other Party and
upon such transfer such Affiliate shall be deleted from the appropriate
Schedule, but doing so will not relieve a Party of its obligations under
Section 14.1.

         12.5  The termination or suspension of this Agreement shall not affect
the rights and liabilities of the Parties under this Agreement with respect to
all Authorized Roamer charges incurred prior to the effective date of such
termination or suspension.

                                  ARTICLE XIII.

                                     DEFAULT

         13.1  A Party will be in "Default" under this Agreement upon the
occurrence of any of the following events:

               13.1.1  Material breach of any material term of this Agreement,
if such breach shall continue for thirty (30) days after receipt of written
notice thereof from the nonbreaching Party;

               13.1.2  Voluntary liquidation or dissolution or the approval by
the management, board of directors, stockholders, or owners of a Party of any
plan or arrangement for the voluntary liquidation or dissolution of the Party;

                                    -17-
<PAGE>

               13.1.3  A final order by the FCC revoking or denying renewal of
CMRS licenses or permits granted to such Party which, individually or in the
aggregate, are material to the business of such Party; or

               13.1.4  Such Party (i) filing pursuant to a statute of the
United States or of any state, a petition for bankruptcy or insolvency or for
reorganization or for the appointment of a receiver or trustee for all or a
portion of such Party's property, (ii) has filed against it, pursuant to a
statute of the United States or of any state, a petition for bankruptcy or
insolvency or for reorganization or for the appointment of a receiver or trustee
for all or a portion of such Party's property, provided that within 120 days
after the filing of any such petition such Party fails to obtain a discharge
thereof, or (iii) making an assignment for the benefit of creditors or
petitioning for, or voluntarily entering into, an arrangement of similar nature,
and provided that such filing, petition, or appointment is still continuing.

         13.2  All claims and disputes relating in any way to the performance,
interpretation, validity, or breach of this Agreement, including but not limited
to a claim based on or arising from an alleged tort, shall be resolved as
provided in this Section 13.2. It is the intent of the Parties that any
disagreements be resolved amicably to the greatest extent possible.

               13.2.1  If a disagreement cannot be resolved by the
representatives of the Parties with day-to-day responsibility for this
Agreement, such matter shall be referred to an executive officer of each of the
Parties. The executive officers shall conduct face-to-face negotiations at a
neutral location or such other location as shall be mutually agreed upon. If
these representatives are unable to resolve the dispute within ten business days
after either Party requests the involvement of the executive officers, then
either Party may, but is not required to, refer the matter to mediation or
arbitration, as applicable in accordance with Sections 13.2.2 and 13.2.3.

               13.2.2  In any case where the amount claimed or at issue is One
Million Dollars ($1,000,000) or more and the Parties are unsuccessful in
resolving the disagreement, the Parties agree to submit the disagreement to
non-binding mediation upon written notification by either Party. The Parties
shall mutually select an independent mediator experienced in telecommunications
system disputes. The specific format for the mediation shall be left to the
discretion of the mediator. If mediation does not result in resolution of the
disagreement within thirty days of the initial request for mediation, then
either Party may, but is not required to, refer the matter to arbitration.

               13.2.3  Any disagreement not finally resolved in accordance
with the foregoing provisions of this Section 13.2 shall, upon written notice by
either Party to the other, be resolved by final and binding arbitration. Subject
to this Section 13.2.3, such arbitration shall be conducted through, and in
accordance with the rules of, JAMS/Endispute. A single neutral arbitrator shall
decide all disputes. Each Party shall bear its own expenses with respect to the
arbitration, except that the costs of arbitration proceeding itself, including
the fees and expenses of the arbitrator, shall be shared equally by the Parties.
The arbitration shall take place in a neutral location selected by the
arbitrator. The arbitrator may permit discovery to the full extent

                                    -18-
<PAGE>

permitted by the Federal Rules of Civil Procedure or to such lesser extent as
the arbitrator determines is reasonable. The arbitrator shall be bound by and
strictly enforce the terms of this Agreement. The arbitrator shall make a
good faith effort to apply applicable law, but an arbitration decision and
award shall not be subject to review because of errors of law. The arbitrator
shall have the sole authority to resolve issues of the arbitrability of any
disagreement, including the applicability or running of any applicable
statute of limitation. The arbitrator shall not have power to award damages
in connection with any dispute in excess of actual compensatory damages nor
to award punitive damages nor any damages that are excluded under this
Agreement and each party irrevocably waives any claim thereto. The award of
any arbitration shall be final, conclusive and binding on the Parties.
Judgment on the award may be entered in any court having jurisdiction over
the Party against which the award was made. Nothing contained in this Section
13.2.3 shall be deemed to prevent either party from seeking any interim
equitable relief, such as a preliminary injunction or temporary restraining
order, pending the results of the arbitration. The United States Arbitration
Act and federal arbitration law shall govern the interpretation, enforcement,
and proceedings pursuant to the arbitration clause in this Agreement.

                                  ARTICLE XIV.

                             SUCCESSORS AND ASSIGNS

         14.1  Neither Party may, directly or indirectly, sell, assign,
transfer, or convey its interest in this Agreement or any of its rights or
obligations hereunder, including any assignment or transfer occurring by
operation of law, without the written consent of both Parties, except that
(i) either Party may assign or delegate this Agreement or any of its rights
or obligations hereunder to an Affiliate of such Party without the consent of
the other Party, but such assignment or delegation will not relieve the Party
of any of its obligations hereunder and (ii) a Party may assign its rights
and obligations hereunder to an assignee of its Service license or permit
issued by the FCC, provided that such assignee expressly assumes, by written
instrument approved in writing by the other Party, all of the obligations of
such Party hereunder and thereby becomes a Party hereunder. In no event will
an assignment permitted under this Section 14.1 without the consent of the
other Party obligate a Serving Carrier to provide Service to Customers of the
assignee or any of its Affiliates other than Customers residing in the area
in which the assignor previously was licensed to provide Service.

         14.2  No person other than a Party to this Agreement or an Indemnified
Person shall acquire any rights hereunder as a third-party beneficiary or
otherwise by virtue of this Agreement.

                                    -19-
<PAGE>

                                   ARTICLE XV.

                NO PARTNERSHIP OR AGENCY RELATIONSHIP IS CREATED

         Nothing contained in this Agreement shall constitute the Parties as
partners with one another or render any Party liable for any debts or
obligations of any other Party, nor shall any Party hereby be constituted the
agent of the other Party.

                                  ARTICLE XVI.

                     NOTICES AND AUTHORIZED REPRESENTATIVES

         Unless otherwise provided herein, any notice, request, instruction or
other document to be given hereunder by any Party to the other shall be in
writing and delivered by hand delivery, certified mail (postage prepaid, return
receipt requested), facsimile, or overnight air delivery service, as follows:

         If to Dobson, to:            Dobson Cellular Systems, Inc.
                                      13439 North Broadway Extension
                                      Oklahoma City, OK 73114
                                      Attn: General Counsel

         with a copy to:              Dobson Communications Corporation
                                      13439 North Broadway Extension
                                      Oklahoma City, OK 73114
                                      Attn: General Counsel

         If to ACC to:                ACC Acquisition LLC
                                      c/o Dobson Communications Corporation
                                      13439 North Broadway Extension
                                      Oklahoma City, OK 73114
                                      Attn: General Counsel

         with a copy to:              Dobson Communications Corporation
                                      13439 North Broadway Extension
                                      Oklahoma City, OK 73114
                                      Attn: General Counsel

or such other address as any Party may from time to time furnish to the other
Party by a notice given in accordance with the terms of this Section. All such
notices and communications shall be deemed to have been duly given at the time
delivered by hand, if personally delivered; three business days after being
deposited in the mail, if mailed; when receipt is confirmed, if by facsimile and
received by 3:00 p.m. local time on any business day and otherwise on the next
business day; and the next business day if sent by overnight air delivery
service.

                                    -20-
<PAGE>

                                  ARTICLE XVII.

                                 CONFIDENTIALITY

         17.1  Each Party shall, and shall cause each of its Affiliates and each
of its and their employees, agents, and contractors, to keep confidential and
not use for any purpose except as contemplated by this Agreement, any and all
information and know-how provided to it by the other Party which is identified
in writing as confidential ("Confidential Information"). Identification of
information as confidential shall, in the case of information delivered in
tangible form, appear on at least the face or first page of such information
and, in the case of information communicated verbally, be given verbally
contemporaneously with the delivery of the information and confirmed in writing
within five business days thereafter. Notwithstanding the foregoing, the
following information shall be treated as Confidential Information without any
further identification as such: (i) The terms, but not including the mere
existence, of this Agreement; and (ii) all information exchanged pursuant to
Article VI.

         17.2  Notwithstanding Section 17.1, a Party shall have no obligation to
keep confidential any information that (a) was rightly in the receiving Party's
possession before receipt from the disclosing Party, (b) is or becomes a matter
of public knowledge without violation of this Agreement by the receiving Party,
(c) is rightfully received by the receiving Party from a third party rightfully
in possession of and, to the best of the receiving Party's knowledge, with a
right to make an unrestricted disclosure of such information, (d) is disclosed
by the disclosing Party to a third party without imposing a duty of
confidentiality on the third party, or (e) is independently developed by the
receiving Party without the use of any Confidential Information. In addition, a
Party may disclose any Confidential Information to the extent required by
applicable law or regulation or by order of a court or governmental agency;
provided, that prior to disclosure the Party shall use all reasonable efforts to
notify the other Party of such pending disclosure and shall provide any
reasonable assistance requested by the other Party to maintain the
confidentiality of the information.

         17.3  The Parties agree that a Party will not have an adequate remedy
at law in the event of a disclosure or threatened disclosure of Confidential
Information in violation of this Article XVII. Accordingly, in such event, in
addition to any other remedies available at law or in equity, a Party shall be
entitled to specific enforcement of this Article XVII and to other injunctive
and equitable remedies against such breach without the posting of any bond.

         17.4  The obligations under this Article XVII shall survive the
termination of this Agreement for a period of three years.

                                 ARTICLE XVIII.

                                  MISCELLANEOUS

         18.1  The Parties agree to comply with, conform to, and abide by all
applicable and valid laws, regulations, rules and orders of all governmental
agencies and authorities, and agree

                                    -21-
<PAGE>

that this Agreement is subject to such laws, regulations, rules and orders.
All references in this Agreement to such laws, regulations, rules and orders
include any successor provision. If any amendment to or replacement of the
same materially alters the benefits, rights, and duties of the Parties
hereunder, the Parties agree to negotiate in good faith an amendment to this
Agreement to restore the respective positions of the Parties to substantially
the same point as existed prior to such amendment or replacement.

         18.2  The Parties agree to use their respective best, diligent, and
good faith efforts to fulfill all of their obligations under this Agreement.
The Parties recognize, however, that to effectuate all the purposes of this
Agreement, it may be necessary either to enter into future agreements or to
amend this Agreement, or both. In that event, the Parties agree to negotiate
with each other in good faith.

         18.3  This Agreement constitutes the full and complete agreement of the
Parties with respect to the subject matter hereof. Any prior agreements among
the Parties with respect to this subject matter, are hereby superseded. This
Agreement may not be amended, except by the written consent of the Parties.
Waiver of any breach of any provision of the Agreement must be in writing signed
by the Party waiving such breach or provision and such waiver shall not be
deemed to be a waiver of any preceding or succeeding breach of the same or any
other provision. The failure of a Party to insist upon strict performance of any
provision of this Agreement or any obligation under this Agreement shall not be
a waiver of such Party's right to demand strict compliance therewith in the
future.

         18.4  The headings in this Agreement are inserted for convenience and
identification only and are not intended to describe, interpret, define or limit
the scope, extent or intent of this Agreement or any provision thereof.

         18.5  This Agreement may be executed in counterparts, each of which
shall be deemed an original, but all of which together shall constitute one and
the same Agreement.

         18.6  This Agreement shall be construed in accordance with the internal
laws of the State of Delaware without reference to the choice of law principles,
except as subject to the United States Arbitration Act and the Federal
Communications Act.

         18.7  Except for claims by third parties which fall within the scope of
a Party's indemnification obligations under Section 6.3, neither Party shall be
liable to the other Party for any special, indirect, consequential, or punitive
damages.

         18.8  The Parties agree that they will not use the name, service marks
or trademarks of the other party or any of its Affiliates in any advertising,
publicity releases or sales presentations, without such Party's written consent.
Neither Party is licensed hereunder to conduct business under any logo,
trademark, service or trade name (or any derivative thereof) of the other Party.

         18.9  No Party shall make any public statement or issue any press
release concerning the terms of this Agreement except as necessary to comply
with requirements of any law, regulation, or the order or judgment of a court or
tribunal of competent jurisdiction. If any such

                                    -22-
<PAGE>

public statement or release is so required, and Dobson and ACC mutually agree
to such statement or release, the Party making such disclosure shall consult
with the other Party prior to making such statement or release and the Party
shall use all reasonable efforts, act in good faith, to agree upon a text for
such statement or release which is satisfactory to Dobson and ACC. Nothing
contained herein is intended to limit the ability of the Parties to make
statements regarding the availability to such Party's Customers of the Services
to be provided hereunder by the other Party or that such other Party is the
provider of such Services.

         18.10  Neither of the Parties will be liable for nonperformance or
defective performance of its obligations under this Agreement to the extent and
for such periods of time as such nonperformance or defective performance is due
to reasons outside such Party's control, including, without limitation, acts of
God, war, acts of any governmental authority, riots, revolutions, fire, floods,
explosions, sabotage, nuclear incidents, lightning, weather, earthquakes,
storms, sinkholes, epidemics, strikes, or delays of suppliers or subcontractors
for the same causes. Neither Party shall be required to settle any labor dispute
or other third party dispute in any manner which is deemed by that Party to be
less than totally advantageous, in that Party's sole discretion.

         18.11  Except as specifically provided herein, this Agreement is a
non-exclusive arrangement between the Parties and nothing contained in this
Agreement is intended or should be construed to preclude or limit a Party from
obtaining from or providing to a third party Service of a type available or
required to be provided under this Agreement.

                                    -23-
<PAGE>

EXECUTED as of the date first written above.

DOBSON CELLULAR SYSTEMS, INC.               ACC ACQUISITION LLC
By: /s/ Everett Dobson                      By:  AT&T Wireless Services JV Co.
   --------------------------------         By: /s/ Don Adams
Name: Everett Dobson                           --------------------------------
Title: President                            Name: Don Adams
Date: 2/25/00                                     -----------------------------
     ------------------------------         Title: Vice President
                                                  -----------------------------
                                            Date: 2/25/00
                                                 ------------------------------

                                            By:  Dobson JV Company
                                            By: /s/ Everett Dobson
                                               --------------------------------
                                            Name: Everett Dobson
                                                 ------------------------------
                                            Title: President
                                                  -----------------------------
                                            Date: 2/25/00
                                                 ------------------------------

                                    -24-<PAGE>

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

                      DOBSON COMMUNICATIONS CORPORATION

                          2000 STOCK INCENTIVE PLAN

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

<PAGE>

                                   ARTICLE I

                                    Purpose

SECTION 1.01 PURPOSE. This Stock Incentive Plan is established by Dobson
Communications Corporation (the "Company") to create incentives which are
designed to motivate Participants to put forth maximum effort toward the
success and growth of the Company and to enable the Company to attract and
retain experienced individuals who by their position, ability and diligence
are able to make important contributions to the Company's success. Toward
these objectives, the Plan provides for the granting of Options to
Participants on the terms and subject to the conditions set forth in the Plan.

SECTION 1.02 ESTABLISHMENT. The Plan is effective as of January 10, 2000 and
for a period of 10 years from such date. The Plan will terminate on January
9, 2010, however, it will continue in effect until all matters relating to
the payment of Awards and administration of the Plan have been settled.

SECTION 1.03 SHARES SUBJECT TO THE PLAN. Subject to Articles IV, VII and IX
of this Plan, shares of stock covered by Options shall consist of 4,000,000
shares of Common Stock.

SECTION 1.04 SHAREHOLDER APPROVAL. The Plan shall be approved by the holders
of a majority of the outstanding shares of Common Stock, present, or
represented, and entitled to vote at a meeting called for such purposes,
which approval must occur within the period ending twelve months after the
date the Plan is adopted by the Board. Pending such approval by the
shareholders, Awards under the Plan may be granted to Participants, but no
such Awards may be exercised or paid prior to receipt of shareholder
approval. In the event shareholder approval is not obtained within such
twelve-month period, all such Awards shall be void.

                                   ARTICLE II

                                  Definitions

SECTION 2.01 "AFFILIATED ENTITY" means any partnership or limited liability
company, a majority of the partnership or other similar interest thereof is
owned or controlled, directly or indirectly, by the Company or one or more of
its Subsidiaries or Affiliated Entities or a combination thereof. For
purposes hereof, the Company, a Subsidiary or an Affiliated Entity shall be
deemed to have a majority ownership interest in a partnership or limited
liability company if the Company, such Subsidiary or Affiliated Entity shall
be allocated a majority of partnership or limited liability company gains or
losses or shall be or control a managing director or a general partner of
such partnership or limited liability company.

SECTION 2.02 "AWARD" means, individually or collectively, any Option granted
under the Plan to a Participant by the Committee pursuant to such terms,
conditions, restrictions, and/or limitations, if any, as the Committee may
establish by the Award Agreement or otherwise.

SECTION 2.03 "AWARD AGREEMENT" means any written instrument that establishes
the terms, conditions, restrictions, and/or limitations applicable to an
Award in addition to those established by this Plan and by the Committee's
exercise of its administrative powers.

SECTION 2.04 "BOARD" means the Board of Directors of the Company.

SECTION 2.05 "CHANGE OF CONTROL" and "CHANGE OF CONTROL EVENTS" mean the
occurrence of one of the events designated in Section IX.

SECTION 2.06 "CODE" means the Internal Revenue Code of 1986, as amended.
Reference to any Section of the Code shall be deemed to include any
amendments or successor provisions to such Section and any regulations under
such Section.

                                       1
<PAGE>

SECTION 2.07 "COMMITTEE" means the Compensation Committee of the Board, or
such other committee designated by the Board, authorized to administer the
Plan under Article III hereof consisting of not less than two members of the
Board.

SECTION 2.08 "COMMON STOCK" means the Class A Common Stock, par value $0.001
per share, of the Company, and after substitution, such other stock as shall
be substituted therefor as provided in Article VII.

SECTION 2.09 "DATE OF GRANT" means the date on which the granting of an Award
is authorized by the Committee or such later date as may be specified by the
Committee in such authorization.

SECTION 2.10 "DISABILITY" shall have the meaning set forth in Section
22(e)(3) of the Code.

SECTION 2.11 "DIRECTOR" means any person who is a member of the Board.

SECTION 2.12 "ELIGIBLE EMPLOYEE" means any employee of the Company, a
Subsidiary or an Affiliated Entity.

SECTION 2.13 "EXCHANGE ACT" means the Securities Exchange Act of 1934, as
amended.

SECTION 2.14 "FAIR MARKET VALUE" means if, at the time an Option is granted
under the Plan, the Company's Common Stock is publicly traded, "fair market
value" shall be determined as of the last business day for which the prices
or quotes discussed in this sentence are available prior to the date such
Option is granted and shall mean (i) the average (on that date) of the high
and low prices of the Common Stock on the principal national securities
exchange on which the Common Stock is traded, if the Common Stock is then
traded on a national securities exchange; or (ii) the last reported sale
price (on that date) of the Common Stock on the NASDAQ National Market, if
the Common Stock is not then traded on a national securities exchange; or
(iii) the closing bid price (or average of bid prices) last quoted (on that
date) by an established quotation service for over-the-counter securities, if
the Common Stock is not reported on the NASDAQ National Market. If the Common
Stock is not publicly traded at the time an Option is granted under the Plan,
"fair market value" shall mean the fair value of the Common Stock as
determined by the Committee after taking into consideration all factors which
it deems appropriate, including, without limitation, recent sale and offer
prices of the Common Stock in private transactions negotiated at arm's length.

SECTION 2.15 "INCENTIVE STOCK OPTION" means an Option within the meaning of
Section 422 of the Code.

SECTION 2.16 "NONQUALIFIED STOCK OPTION" means an Option which is not an
Incentive Stock Option.

SECTION 2.17 "OPTION" means an Award granted under Article VI of the Plan.

SECTION 2.18 "PARTICIPANT" means a Director, an Eligible Employee or an
independent contractor to whom an Award has been granted by the Committee
under the Plan.

SECTION 2.19 "PLAN" means this Dobson Communications Corporation 2000 Stock
Incentive Plan.

SECTION 2.20 "SUBSIDIARY" shall have the same meaning set forth in Section
424 of the Code.

                                  ARTICLE III

                                 Administration

SECTION 3.01 ADMINISTRATION BY COMMITTEE. The Committee shall administer the
Plan. Unless otherwise provided in the by-laws of the Company or the
resolutions adopted from time to time by the Board establishing the
Committee, the Board may from time to time remove members from, or add
members to, the Committee. Vacancies on the Committee, however caused, shall
be filled by the Board. The Committee shall hold meetings at such times and
places as it may determine. A majority of

                                       2
<PAGE>

the Committee shall constitute a quorum, and the acts of a majority of the
members present at any meeting at which a quorum is present or acts reduced
to or approved in writing by a majority of the members of the Committee shall
be the valid acts of the Committee.

         Subject to the provisions of the Plan, the Committee shall have
exclusive power to:

         (a) Select the Participants to be granted Awards.

         (b) Determine the time or times when Awards will be made.

         (c) Determine the form of an Award, the number of shares of Common
Stock subject to the Award, all the terms, conditions (including performance
requirements), restrictions and/or limitations, if any, of an Award,
including the time and conditions of exercise or vesting, and the terms of
any Award Agreement, which may include the waiver or amendment of prior terms
and conditions or acceleration or early vesting or payment of an Award under
certain circumstances determined by the Committee.

         (d) Determine whether Awards will be granted singly or in
combination.

         (e) Accelerate the vesting, exercise or payment of an Award or the
performance period of an Award when such action or actions would be in the
best interest of the Company.

         (f) Take any and all other action it deems necessary or advisable
for the proper operation or administration of the Plan.

SECTION 3.02 COMMITTEE TO MAKE RULES AND INTERPRET PLAN. The Committee in its
sole discretion shall have the authority, subject to the provisions of the
Plan, to establish, adopt, or revise such rules and regulations and to make
all such determinations relating to the Plan as it may deem necessary or
advisable for the administration of the Plan. The Committee's interpretation
of the Plan or any Awards granted pursuant thereto and all decisions and
determinations by the Committee with respect to the Plan shall be final,
binding, and conclusive on all parties.

                                   ARTICLE IV

                                 Grant of Awards

SECTION 4.01 COMMITTEE TO GRANT AWARDS. The Committee may, from time to time,
grant Awards to one or more Participants, provided, however, that:

         (a) Subject to Article VII, the aggregate number of shares of Common
Stock made subject to the Award of Options to any Participant in any fiscal
year of the Company may not exceed 100,000.

         (b) Any shares of Common Stock related to Awards which terminate by
expiration, forfeiture, cancellation or otherwise without the issuance of
shares of Common Stock shall be available again for grant under the Plan.

         (c) Common Stock delivered by the Company in payment of any Award
under the Plan may be authorized and unissued Common Stock or Common Stock
held in the treasury of the Company.

         (d) The Committee shall, in its sole discretion, determine the
manner in which fractional shares arising under this Plan shall be treated.

         (e) Separate certificates representing Common Stock to be delivered
to a Participant upon the exercise of any Option will be issued to such
Participant.

                                       3
<PAGE>

                                   ARTICLE V

                                  Eligibility

         Subject to the provisions of the Plan, the Committee shall, from
time to time, select from the Eligible Employees and Directors to whom Awards
shall be granted and shall determine the type or types of Awards to be made
and shall establish in the related Award Agreements the terms, conditions,
restrictions and/or limitations, if any, applicable to the Awards in addition
to those set forth in the Plan and the administrative rules and regulations
issued by the Committee. The Committee may also grant Nonqualified Stock
Options to independent contractors who provide services to the Company, a
Subsidiary or and Affiliated Entity.

                                   ARTICLE VI

                                 Stock Options

SECTION 6.01 GRANT OF OPTIONS. The Committee may, from time to time, subject
to the provisions of the Plan and such other terms and conditions as it may
determine, grant Options to Participants. These Options may be Incentive
Stock Options or Nonqualified Stock Options, or a combination of both. Each
grant of an Option shall be evidenced by an Award Agreement executed by the
Company and the Participant, and shall contain such terms and conditions and
be in such form as the Committee may from time to time approve, subject to
the requirements of Section 6.02.

SECTION 6.02 CONDITIONS OF OPTIONS. Each Option so granted shall be subject
to the following conditions:

         (a) EXERCISE PRICE. As limited by Section 6.02(e) below, each Option
shall state the exercise price which shall be set by the Committee at the
Date of Grant; provided, however, no Nonqualified Stock Option shall be
granted at an exercise price which is less than 75% of the Fair Market Value
of the Common Stock on the Date of Grant.

         (b) MEANS OF EXERCISING OPTIONS. An Option (or any part of
installment thereof) shall be exercised by giving written notice to the
Company at its principal office address, or to such transfer agent as the
Company shall designate. Such notice shall identify the Option being
exercised and specify the number of shares as to which such Option is being
exercised, accompanied by (i) an instrument of accession providing that the
Participant agrees to be bound by the terms, rights and obligations
applicable to "Shareholders" under that certain Shareholders' Agreement dated
as of March 19, 1996, by and among the Company and its stockholders signatory
thereto, as amended from time to time; provided, this requirement shall not
be applicable after the Company has completed the initial public offering of
its Class A Voting Common Stock, and (ii) full payment of the purchase price
therefor either (a) in United States dollars in cash or by check, (b) at the
discretion of the Committee, through delivery of shares of Common Stock
having a fair market value equal as of the date of the exercise to the cash
exercise price of the Option including withholding of shares of Common Stock
otherwise deliverable upon exercise of an Option, but only to the extent such
exercise of an Option would not result in an accounting compensation charge
with respect to the shares used to pay the exercise price unless otherwise
determined by the Committee, (c) at the discretion of the Committee, by
delivery of the grantee's personal recourse note bearing interest payable not
less than annually at no less than 100% of the lowest applicable Federal
rate, as defined in Section 1274(d) of the Code, (d) at the discretion of the
Committee and consistent with applicable law, through the delivery of an
assignment to the Company of a sufficient amount of the proceeds from the
sale of the Common Stock acquired upon exercise of the Option and an
authorization to the broker or selling agent to pay that amount to the
Company, which sale shall be at the participant's direction at the time of
exercise, or (e) at the discretion of the Committee, by any combination of
(a), (b), (c) and (d) above. If the Committee exercises its discretion to
permit payment of the exercise price of an Option by means of the methods set
forth in clauses (b), (c), (d) or (e) of the preceding sentence, such
discretion shall be exercised in writing at the time of the grant of the
Option in question. The holder of an Option shall not have the rights of a
shareholder with respect to the shares covered by such Option until the date
of issuance of a stock certificate to such holder for such shares. Except as
expressly provided above in Article VII with respect to changes

                                       4
<PAGE>

in capitalization and stock dividends, no adjustment shall be made for
dividends or similar rights for which the record date is before the date such
stock certificate is issued.

         (c) EXERCISE OF OPTIONS. Options granted under the Plan shall be
exercisable, in whole or in such installments and at such times, and shall
expire at such time, as shall be provided by the Committee in the Award
Agreement. Exercise of an Option shall be by written notice stating the
election to exercise in the form and manner determined by the Committee.
Every share of Common Stock acquired through the exercise of an Option shall
be deemed to be fully paid at the time of exercise and payment of the
exercise price.

         (d) OTHER TERMS AND CONDITIONS. Among other conditions that may be
imposed by the Committee, if deemed appropriate, are those relating to (i)
the period or periods and the conditions of exercisability of any Option;
(ii) the minimum periods during which Participants must be employed by the
Company, its Subsidiaries or an Affiliated Entity, or must hold Options
before they may be exercised; (iii) the minimum periods during which shares
acquired upon the exercise of Options must be held before sale or transfer
shall be permitted; (iv) conditions under which Options or shares may be
subject to forfeiture; (v) the frequency of exercise or the minimum or
maximum number of shares that may be acquired at any one time and (vi) the
achievement by the Company of specified performance criteria.

         (e) SPECIAL RESTRICTIONS RELATING TO INCENTIVE STOCK OPTIONS.
Options issued in the form of Incentive Stock Options shall only be granted
to Eligible Employees of the Company or a Subsidiary and shall not be granted
to Directors who are not also Eligible Employees of the Company or a
Subsidiary and shall, in addition to being subject to all applicable terms,
conditions, restrictions and/or limitations established by the Committee,
comply with the requirements of Section 422 of the Code (or any successor
Section thereto), including, without limitation, the requirement that the
exercise price of an Incentive Stock Option not be less than 100% of the Fair
Market Value of the Common Stock on the Date of Grant, the requirement that
each Incentive Stock Option, unless sooner exercised, terminated or
cancelled, expire no later than 10 years from its Date of Grant, and the
requirement that the aggregate Fair Market Value (determined on the Date of
Grant) of the Common Stock with respect to which Incentive Stock Options are
exercisable for the first time by a Participant during any calendar year
(under this Plan or any other plan of the Company, its parent or any
Subsidiary) not exceed $100,000. Incentive Stock Options which are in excess
of the applicable $100,000 limitation will be automatically recharacterized
as Nonqualified Stock Options as provided under Section 6.03 of this Plan. No
Incentive Stock Options shall be granted to any Eligible Employee if,
immediately before the grant of an Incentive Stock Option, such Eligible
Employee owns more than 10% of the total combined voting power of all classes
of stock of the Company or its Subsidiaries (as determined in accordance with
the stock attribution rules contained in Sections 422 and 424(d) of the
Code). Provided, the preceding sentence shall not apply if, at the time the
Incentive Stock Option is granted, the exercise price is at least 110% of the
Fair Market Value of the Common Stock subject to the Incentive Stock Option,
and such Incentive Stock Option by its terms is exercisable no more than five
years from the date such Incentive Stock Option is granted.

         (f) SHAREHOLDER RIGHTS. No Participant shall have a right as a
shareholder with respect to any share of Common Stock subject to an Option
prior to purchase of such shares of Common Stock by exercise of the Option.

SECTION 6.03 OPTIONS NOT QUALIFYING AS INCENTIVE STOCK OPTIONS. With respect
to all or any portion of any Option granted under this Plan not qualifying as
an "incentive stock option" under Section 422 of the Code, such Option shall
be considered as a Nonqualified Stock Option granted under this Plan for all
purposes. This Plan and any Incentive Stock Options granted hereunder shall
be deemed to have incorporated by reference all the provisions and
requirements of Section 422 of the Code (and the Treasury Regulations issued
thereunder) which are required to provide that all Incentive Stock Options
granted hereunder shall be "incentive stock options" described in Section 422
of the Code. Further, in the event that the Committee grants Incentive Stock
Options under this Plan to a Participant, and, in the event that the
applicable limitation contained in Section 6.02(e) herein is exceeded, then,
such Incentive Stock Options in excess of such limitation shall be treated as
Nonqualified Stock Options under this Plan subject to the terms and
provisions of the applicable Award Agreement, except to the extent modified
to reflect recharacterization of the Incentive Stock Options as Nonqualified
Stock Options.

                                       5
<PAGE>

                                  ARTICLE VII

                               Stock Adjustments

         In the event that the shares of Common Stock, as presently
constituted, shall be changed into or exchanged for a different number or
kind of shares of stock or other securities of the Company or of another
corporation (whether by reason of merger, consolidation, recapitalization,
reclassification, stock split, combination of shares or otherwise), or if the
number of such shares of Common Stock shall be increased through the payment
of a stock dividend, or a dividend on the shares of Common Stock or rights or
warrants to purchase securities of the Company shall be made, then there
shall be substituted for or added to each share available under and subject
to the Plan as provided in Section 1.03 hereof, and each share theretofore
appropriated or thereafter subject or which may become subject to Options
under the Plan, the number and kind of shares of stock or other securities
into which each outstanding share of Common Stock shall be so changed or for
which each such share shall be exchanged or to which each such share shall be
entitled, as the case may be, on a fair and equivalent basis in accordance
with the applicable provisions of Section 424 of the Code; provided, however,
with respect to Options, in no such event will such adjustment result in a
modification of any Option as defined in Section 424(h) of the Code. In the
event there shall be any other change in the number or kind of the
outstanding shares of Common Stock, or any stock or other securities into
which the Common Stock shall have been changed or for which it shall have
been exchanged, then if the Committee shall, in its sole discretion,
determine that such change equitably requires an adjustment in the shares
available under and subject to the Plan, or in any Award theretofore granted
or which may be granted under the Plan, such adjustments shall be made in
accordance with such determination, except that no adjustment of the number
of shares of Common Stock available under the Plan or to which any Award
relates that would otherwise be required shall be made unless and until such
adjustment either by itself or with other adjustments not previously made
would require an increase or decrease of at least 1% in the number of shares
of Common Stock available under the Plan or to which any Award relates
immediately prior to the making of such adjustment (the "Minimum
Adjustment"). Any adjustment representing a change of less than such minimum
amount shall be carried forward and made as soon as such adjustment together
with other adjustments required by this Article VII and not previously made
would result in a Minimum Adjustment. Notwithstanding the foregoing, any
adjustment required by this Article VII which otherwise would not result in a
Minimum Adjustment shall be made with respect to shares of Common Stock
relating to any Award immediately prior to exercise, payment or settlement of
such Award.

         No fractional shares of Common Stock or units of other securities
shall be issued pursuant to any such adjustment, and any fractions resulting
from any such adjustment shall be eliminated in each case by rounding
downward to the nearest whole share.

                                  ARTICLE VIII

                                    General

SECTION 8.01 AMENDMENT OR TERMINATION OF PLAN. The Board may suspend or
terminate the Plan at any time. In addition, the Board may, from time to
time, amend the Plan in any manner, but may not without shareholder approval
adopt any amendment which would increase the aggregate number of shares of
Common Stock available under the Plan (except by operation of Article VII);
provided, that any amendment to the Plan shall require approval of the
shareholders if, in the opinion of counsel to the Company, such approval is
required by any Federal or state law or any regulations or rules promulgated
thereunder.

SECTION 8.02 DIVIDENDS AND DIVIDEND EQUIVALENTS. The Committee may choose, at
the time of the grant of any Award or any time thereafter up to the time of
payment of such Award, to include as part of such Award an entitlement to
receive dividends or dividend equivalents subject to such terms, conditions,
restrictions, and/or limitations, if any, as the Committee may establish.
Dividends and dividend equivalents granted hereunder shall be paid in such
form and manner (i.e., lump sum or installments), and at such time as the
Committee shall determine. All dividends or dividend equivalents which are
not paid currently may, at the Committee's discretion, accrue interest or be
reinvested into additional shares of Common Stock.

                                       6
<PAGE>

SECTION 8.03 ACCELERATION OF OTHERWISE UNEXERCISABLE OPTIONS ON DEATH,
DISABILITY OR OTHER SPECIAL CIRCUMSTANCES. The Committee, in its sole
discretion, may permit (i) a Participant who terminates employment due to a
Disability, (ii) the personal representative of a deceased Participant, or
(iii) any other Participant who terminates employment upon the occurrence of
special circumstances (as determined by the Committee) to purchase all or any
part of the shares subject to any unvested Award on the date of the
Participant's Disability, death, or as the Committee otherwise so determines.
With respect to Awards which have already vested at the date of such
termination or the vesting of which is accelerated by the Committee in
accordance with the foregoing provision, the Participant or the personal
representative of a deceased Participant shall automatically have the right
to exercise such vested Awards within three months of such date of
termination of employment or one year in the case of a Participant suffering
a Disability or three years in the case of a deceased Participant.

SECTION 8.04 LIMITED TRANSFERABILITY. The Committee may, in its discretion,
authorize all or a portion of the Nonqualified Stock Options to be granted
under this Plan to be on terms which permit transfer by the Participant to
(i) the ex-spouse of the Participant pursuant to the terms of a domestic
relations order, (ii) the spouse, children or grandchildren of the
Participant ("Immediate Family Members"), (iii) a trust or trusts for the
exclusive benefit of such Immediate Family Members, or (iv) a partnership in
which such Immediate Family Members are the only partners. In addition (x)
there may be no consideration for any such transfer, (y) the Award Agreement
pursuant to which such Nonqualified Stock Options are granted must be
approved by the Committee, and must expressly provide for transferability in
a manner consistent with this Section, and (z) subsequent transfers of
transferred Nonqualified Stock Options shall be prohibited except as set
forth below in this Section 8.04. Following transfer, any such Nonqualified
Stock Options shall continue to be subject to the same terms and conditions
as were applicable immediately prior to transfer, provided that for purposes
of Section 8.03 hereof the term "Participant" shall be deemed to refer to the
transferee. The events of termination of employment of Section 8.03 hereof
shall continue to be applied with respect to the original Participant,
following which the Options shall be exercisable by the transferee only to
the extent, and for the periods specified in Section 8.03 hereof. No transfer
pursuant to this Section 8.04 shall be effective to bind the Company unless
the Company shall have been furnished with written notice of such transfer
together with such other documents regarding the transfer as the Committee
shall request. In addition, Options shall be transferable by will or the laws
of descent and distribution; however, no such transfer of an Option by the
Participant shall be effective to bind the Company unless the Company shall
have been furnished with written notice of such transfer and an authenticated
copy of the will and/or such other evidence as the Committee may deem
necessary to establish the validity of the transfer and the acceptance by the
transferee of the terms and conditions of such Option.

SECTION 8.05 WITHHOLDING TAXES. A Participant must pay the amount of taxes
required by law upon the exercise or payment of an Award (i) in cash, (ii) at
the discretion of the Committee, by delivering to the Company shares of
Common Stock having a Fair Market Value on the date of payment equal to the
amount of such required withholding taxes, or (iii) a combination of the
foregoing.

SECTION 8.06 AMENDMENTS TO AWARDS. The Committee may at any time unilaterally
amend the terms of any Award Agreement, whether or not presently exercisable,
earned, paid or vested, to the extent it deems appropriate, including by
example and not by limitation, the acceleration of vesting of Awards;
provided, however, that any such amendment which is adverse to the
Participant shall require the Participant's consent.

SECTION 8.07 SECURITIES LAWS. The Company shall have no obligation to issue
or deliver certificates representing shares of Common Stock subject to Awards
if such issuance or delivery would violate any federal or state securities or
other laws or prior to:

         (a) the obtaining of any approval from, or satisfaction of any
waiting period or other condition imposed by, any governmental agency which
the Committee shall, in its sole discretion, determine to be necessary or
advisable; and

         (b) the completion of any registration or other qualification of
such shares under any state or Federal law or ruling of any governmental body
which the Committee shall, in its sole discretion, determine to be necessary
or advisable.

                                       7
<PAGE>

SECTION 8.08 RIGHT TO CONTINUED EMPLOYMENT. Participation in the Plan shall
not give any Director any right to remain a Director of the Company or any
Eligible Employee any right to remain in the employ of the Company, any
Subsidiary or any Affiliated Entity. The adoption of this Plan shall not be
deemed to give any Director, Eligible Employee or any other individual any
right to be selected as a Participant or to be granted an Award.

SECTION 8.09 RELIANCE ON REPORTS. Each member of the Committee and each
member of the Board shall be fully justified in relying or acting in good
faith upon any report made by the independent public accountants of the
Company and its Subsidiaries and upon any other information furnished in
connection with the Plan by any person or persons other than himself. In no
event shall any person who is or shall have been a member of the Committee or
of the Board be liable for any determination made or other action taken or
any omission to act in reliance upon any such report or information or for
any action taken, including the furnishing of information, or failure to act,
if in good faith.

SECTION 8.10 CONSTRUCTION. Masculine pronouns and other words of masculine
gender shall refer to both men and women.

SECTION 8.11 GOVERNING LAW. The Plan shall be governed by and construed in
accordance with the laws of the State of Oklahoma except as superseded by
applicable Federal law.

                                   ARTICLE IX

                               Change in Control

         In the event any Change in Control Event (as defined below) occurs,
each Option then outstanding shall, immediately prior to such Change in
Control Event, be nonforfeitable and exercisable in full. A Change in Control
Event shall mean any of the following:

         (i)   Any transaction in which shares of voting securities of the
         Company are sold or transferred by the Company or shareholders of
         the Company as a result of which those persons and entities who own
         voting securities of the Company prior to such transaction own less
         than fifty percent (50%) of the outstanding voting securities of the
         Company after such transaction;

         (ii)  The merger or consolidation of the Company with or into another
         entity as a result of which less than fifty percent (50%) of the
         outstanding voting securities of the surviving or resulting entity are
         beneficially owned by those persons and entities who beneficially own
         voting securities of the Company prior to such merger or consolidation;
         or

         (iii) The sale of all or substantially all of the Company's assets to
         an entity of which less than fifty percent (50%) of the outstanding
         voting securities of such entity are beneficially owned by those
         persons and entities who own voting securities of the Company at the
         time of such asset sale.

                                   ARTICLE X

                  Acceleration of Options on Corporate Event

If the Company shall, pursuant to action by the Board, at any time propose to
dissolve or liquidate or merge into, consolidate with, or sell or otherwise
transfer all or substantially all of its assets to another corporation
("Transaction") and provision is not made pursuant to the terms of such
Transaction for the assumption by the surviving, resulting or acquiring
corporation of outstanding Options under the Plan, or for the substitution of
new

                                       8
<PAGE>

options therefor, the Committee shall cause written notice of the proposed
Transaction to be given to each Participant no less than forty days prior to
the anticipated effective date of the proposed Transaction, and his Option
shall become 100% vested and, prior to a date specified in such notice, which
shall be not more than ten days prior to the anticipated effective date of
the proposed Transaction, each Participant shall have the right to exercise
his Option to purchase any or all of the Common Stock then subject to such
Option. Each Participant, by so notifying the Company in writing, may, in
exercising his Option, condition such exercise upon, and provide that such
exercise shall become effective at the time of, but immediately prior to, the
consummation of the Transaction, in which event such Participant need not
make payment for the Common Stock to be purchased upon exercise of such
Option until five days after written notice by the Company to such
Participant that the Transaction has been consummated. If the Transaction is
consummated, each Option, to the extent not previously exercised prior to the
date specified in the foregoing notice, shall terminate on the effective date
of such consummation. If the Transaction is abandoned, (i) any Common Stock
not purchased upon exercise of such Option shall continue to be available for
purchase in accordance with the other provisions of the Plan and (ii) to the
extent that any Option not exercised prior to such abandonment shall have
vested solely by operation of this Article X, such vesting shall be deemed
annulled, and the vesting schedule set forth in the Participant's Option
Agreement shall be reinstituted, as of the date of such abandonment.

                                       9

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