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                                                                  EXHIBIT 10.18

                          TELEMATE.NET SOFTWARE, INC.

                          EMPLOYEE STOCK PURCHASE PLAN

                                   SECTION 1.
                                    PURPOSE

         The purpose of the Telemate.Net Software, Inc. Employee Stock Purchase
Plan (the "Plan") is to promote the interests of the Company by providing the
opportunity to purchase Shares to Employees in order to attract and retain
Employees by providing an incentive to work to increase the value of Shares and
a stake in the future of the Company which corresponds to the stake of each of
the Company's shareholders. The Plan is intended to be an "employee stock
purchase plan" as defined in Section 423 of the Internal Revenue Code of 1986,
as amended ("Code"). The provisions of the Plan shall, accordingly, be
construed so as to comply with the requirements of Section 423 of the Code
whenever possible.

                                   SECTION 2.
                                  DEFINITIONS

         2.1      "BASE PAY" means regular straight-time and overtime earnings
received from the Company, excluding payments for incentive compensation,
bonuses and other special payments.

         2.2      "BOARD" means the Board of Directors of Telemate.Net
Software, Inc.

         2.3      "COMMITTEE" means the Compensation Committee of the Board.

         2.4      "COMPANY" means Telemate.Net Software, Inc., a Georgia
corporation, and any successor to such organization.

         2.5      "CUSTODIAN" means such person or entity as the Committee
shall designate from time to time.

         2.6      "EFFECTIVE DATE" means March 21, 2000, or such other date as
the Board or the Committee shall so choose. The Effective Date shall be subject
to shareholder approval pursuant to Section 17.

         2.7      "EXERCISE DATE" means the last day of a Purchase Period.

         2.8      "FAIR MARKET VALUE" means the closing sale price of the
Shares in the national securities market on which the Shares are traded, on the
trading day immediately preceding the day on which such value is to be
determined or, if no shares were traded on such day, on the next preceding day
on which the Shares were traded, as reported by NASDAQ or other reputable
national quotation service. If at any time the Shares are not traded on a
national securities exchange, Fair Market Value shall be the value determined
by the Board of Directors or Committee administering the Plan, taking into
consideration those factors affecting or reflecting value which they deem
appropriate.

         2.9      "NASDAQ" means the NASDAQ Stock Market or its successor.

         2.10     "PARTICIPANT" means an employee of the Company or of a parent
or subsidiary of the Company who has enrolled in the Plan by completing a
Participation Form (as such term is defined in Section 5 hereof) with the Plan
Administrator. The terms parent and subsidiary have the meanings set forth in
Code Sections 424(e) and (f), respectively.

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         2.11     "PLAN ADMINISTRATOR" means such person or entity so
designated by the Board.

         2.12     "PURCHASE PERIOD" means each quarterly period, beginning on
March 15, June 15, September 15 and December 15, with the first such Purchase
Period beginning with the Effective Date of the Plan. The first such Purchase
Period will be less than a quarter.

         2.13     "PURCHASE RIGHT" means a Participant's option to purchase
shares of Common Stock that is deemed to be granted to a Participant during a
Purchase Period pursuant to Section 7.

         2.14     "SECTION 16(b) INSIDER" means those persons subject to the
requirements of Section 16(b) of the Securities Exchange Act of 1934, as
amended.

         2.15     "SHARES" means the common stock, par value $0.001 per share,
of Telemate.Net Software, Inc., and any other stock or securities (including
any other share or securities of an entity other than Telemate.Net Software,
Inc.) for or into which the outstanding shares of such common stock are
hereinafter exchanged or changed.

         2.16     "TRADING DAY" refers to a day during which NASDAQ is
available for trading the Shares.

                                   SECTION 3.
                                  ELIGIBILITY

         (a)      Participation in the Plan is voluntary. All employees of the
Company who work at least twenty (20) hours per week, including officers and
directors who are employees but who are not members of the Committee, are
eligible to participate in the Plan. The employee's entry date in the Plan
shall be the first day of the Purchase Period immediately following the
employee's first day of employment by the Company.

         (b)      Notwithstanding any provision of the Plan to the contrary, no
employee may participate in the Plan if prior to the grant of Purchase Rights
or if following a grant of Purchase Rights under the Plan, the employee would
own, directly or by attribution, stock, Purchase Rights or other options to
purchase stock representing five percent (5%) or more of the total combined
voting power or value of all classes of the Company's stock as defined in Code
Section 423(b)(3).

                                   SECTION 4.
                         SECURITIES SUBJECT TO THE PLAN

         The maximum number of Shares which may be granted and purchased under
the Plan may not exceed five hundred thousand (500,000) Shares (subject to
adjustment as provided in Section 15), which may be authorized but unissued
shares, re-acquired shares or shares bought on the open market. If any Purchase
Right granted shall expire or terminate for any reason without having been
exercised in full, the unpurchased Shares shall again become available for
purposes of the Plan, unless the Plan has been terminated.

                                   SECTION 5.
                                 PARTICIPATION

         Eligible employees become Participants in the Plan by completing a
"Participation Form," which authorizes payroll deductions for the purpose of
participating in the Plan, and filing such Participation Form with the Plan
Administrator prior to the start date of a Purchase Period.

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                                   SECTION 6.
                               PAYROLL DEDUCTIONS

         (a)      In order to purchase Shares, a Participant may elect and
indicate on the Participation Form an amount he or she wishes to authorize the
Company to deduct at regular payroll intervals during the Purchase Period,
expressed either as (1) an integral percentage amount ranging from one percent
(1%) to ten percent (10%) of such Participant's Base Pay for the applicable
payroll period, with a minimum deduction of $10.00 per payday during the
Purchase Period, or (2) a dollar amount to be deducted pro rata at regular
payroll intervals during the Purchase Period, with a minimum deduction of
$10.00 per payday and a maximum dollar amount per payday to be set by the
Committee. The Committee shall determine from time to time whether method (1)
or (2), or both, shall be utilized. The Participation Form will include
authorization for the Company to make payroll deductions from the Participant's
Base Pay.

         (b)      Purchase Rights granted to a Participant under the Plan for
any calendar year may not represent Shares with a value in excess of
twenty-five thousand dollars ($25,000.00). The $25,000.00 limit is determined
based upon the Fair Market Value of the Shares subject to a Purchase Right as
of the first day (the grant date) of the Purchase Period during which such
Purchase Rights are granted. Participants will be notified if this limitation
becomes applicable to them.

         (c)      The amounts deducted from the Participant's Base Pay shall be
credited to a bookkeeping account established in the Participant's name under
the Plan, but no actual separate account will be established by the Company to
hold such amounts. There shall be no interest paid on the balance credited to a
Participant's account. Amounts deducted from the Participant's Base Pay may be
commingled with amounts deducted under the Plan for other Participants in a
separate account maintained by the Company. The amounts in such account may be
used by the Company for its general corporate purposes prior to the purchase of
Shares during a Purchase Period.

         (d)      Payroll deductions shall begin on the first payday of each
Purchase Period, and shall end on the last payday of each Purchase Period. A
Participant on an approved leave of absence may continue participating in the
Plan by making cash payments to the Company within a normal pay period equal to
the amount of the normal payroll deduction had the leave of absence not
occurred. The right of a Participant on an approved leave of absence to
continue participating in the Plan shall terminate upon the expiration of
twelve (12) weeks of leave, unless the Participant's right to re-employment by
the Company after a longer leave is guaranteed by statute or contract, in which
case termination of the right to participate will occur upon the expiration of
such extended period.

         (e)      So long as a Participant remains an employee of the Company,
payroll deductions will continue in effect from Purchase Period to Purchase
Period, unless prior to the first day of the next succeeding Purchase Period
the Participant:

                  (i)      elects a different rate by filing a new
Participation Form with the Plan Administrator; or

                  (ii)     withdraws from the Plan in accordance with Section 9
hereof.

                                   SECTION 7.
                            GRANT OF PURCHASE RIGHTS

         (a)      Subject to the effective date provisions of Section 17, at
5:01 p.m. Eastern Standard Time, on the last day of each Purchase Period (the
Exercise Date), each Participant who has not withdrawn from the Plan pursuant
to Section 9 shall be deemed to have been granted a Purchase Right as of the
first day of the Purchase

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Period to purchase as many full Shares as can be purchased with the balance
credited to such Participant's account as of the Exercise Date.

         (b)      The price at which each Purchase Right to purchase Shares
shall be exercised is the lower of:

                  (i)      85% of the Fair Market Value of the Shares on NASDAQ
on the first Trading Day of a Purchase Period; or

                           (ii)     85% of the Fair  Market  Value of the
Shares on NASDAQ on the last Trading Day of such Purchase Period.

         (c)      A Participant may not be granted a Purchase Right to purchase
Shares with a Fair Market Value exceeding six thousand two hundred fifty
dollars ($6,250.00) for any particular Purchase Period. The Committee shall
have the power, exercisable at any time prior to the start of a Purchase
Period, to increase or decrease the dollar value maximum Purchase Right for
that Purchase Period. The maximum, as thus adjusted, will continue in effect
from Purchase Period to Purchase Period until the Committee once again
exercises its power to adjust the maximum.

                                   SECTION 8.
                          EXERCISE OF PURCHASE RIGHTS

         (a)      Subject to the effective date provisions of Section 17, each
outstanding Purchase Right held by a Participant who has authorized payroll
deductions and not withdrawn from the Plan pursuant to Section 9 shall be
deemed automatically exercised as of 5:01 p.m. on the Exercise Date (the last
day of the Purchase Period). The exercise of the Purchase Right is accomplished
by applying the balance credited to each Participant's account as of the
Exercise Date to the purchase on the Exercise Date of whole Shares at the
purchase price in effect for the Purchase Period.

         (b)      Any amount in a Participant's account not applied to the
purchase of Shares for a Purchase Period will be held for the purchase of
Shares in the next Purchase Period.

         (c)     If the number of Shares for which Purchase Rights are
exercised exceeds the number of Shares available in any Purchase Period under
the Plan, the Shares available for exercise will be allocated by the Plan
Administrator pro rata among the Participants in such Purchase Period in
proportion to the relative amounts credited to their accounts. Any amounts not
thereby applied to the purchase of Shares under the Plan will be refunded to
the Participants after the end of the Purchase Period.

                                   SECTION 9.
                 WITHDRAWAL AND TERMINATION OF PURCHASE RIGHTS

          (a)     A Participant who has authorized payroll deductions may
withdraw from the Plan during a Purchase Period by providing written notice to
the Plan Administrator on or before 5:00 p.m. of the last business day of such
Purchase Period. Such withdrawal will become effective upon receipt by the Plan
Administrator of such notice, payroll deductions will cease as soon as is
administratively feasible from the date of such notice, and no additional
payroll deductions will be made on behalf of such Participant during the
Purchase Period. Such notice shall be on a form (the "Withdrawal Form")
provided by the Plan Administrator for that purpose. The Withdrawal Form will
permit a Participant to elect to receive all accumulated payroll deductions as
a refund without penalty or to exercise such Participant's outstanding Purchase
Rights to purchase Shares on the following Exercise Date in the amount of all
payroll deductions withheld during the Purchase Period prior to the
Participant's withdrawal.

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         (b)      Any Participant who withdraws from the Plan or is deemed to
have withdrawn from the Plan pursuant to Section 9(a) will not be eligible to
rejoin the Plan until the Purchase Period following the Purchase Period of
withdrawal. A Participant wishing to resume participation may re-enroll in the
Plan by completing and filing a new Participation Form for a subsequent
Purchase Period by following the applicable enrollment procedures.

         (c)      If a Participant ceases to be an employee of the Company for
any reason during a Purchase Period, his or her outstanding Purchase Right will
immediately terminate, and all sums previously collected from such Participant
during such Purchase Period under the terminated Purchase Right will be
refunded to the Participant.

                                  SECTION 10.
                             RIGHTS AS SHAREHOLDER

         (a)      A Participant shall not become a shareholder with respect to
Shares to be purchased during a Purchase Period until the Purchase Right has
been exercised on the Exercise Date. Thus, a Participant shall have no right to
any dividend or distribution made prior to the Exercise Date on Shares
purchased during the Purchase Period.

         (b)      The Custodian may impose upon, or pass through to, the
Participant a reasonable fee for the transfer of Shares in the form of stock
certificates from the Custodian to the Participant. It is the responsibility of
each Participant to keep his or her address current with the Company through
the Plan Administrator and with the Custodian.

                                  SECTION 11.
                     SALE OF SHARES ACQUIRED UNDER THE PLAN

         (a)      Participants may sell the Shares they acquire under the Plan
only in compliance with the restrictions set forth below:

                  (i)      Section 16(b) Insiders may be subject to certain
restrictions in connection with their transactions under the Plan and with
respect to the sale of Shares obtained under the Plan, including, but not
limited to, the Company's Insider Trading Policy, as the same may exist from
time to time.

                  (ii)     Shares obtained under the Plan by a Participant must
comply with the Company's Insider Trading Policy, as the same may exist from
time to time.

          (b)     In order to insure compliance with the restrictions and
requirements herein, the Company may issue appropriate "stop transfer"
instructions to its transfer agent, if any, and, if the Company transfers its
own securities, it may make appropriate notations to the same effect in its own
records. By executing the Participation Form, each Participant acknowledges and
agrees to the Company's rights described in this Section 11(b).

         (c)      A Participant shall immediately inform the Plan Administrator
in writing if the Participant transfers any Shares purchased through the Plan
within two (2) years from the date of grant of the related Purchase Right. Such
transfer shall include disposition by sale, gift or other manner. The
Participant may be requested to disclose the manner of the transfer, the date
of the transfer, the number of Shares involved and the transfer price. By
executing the Participation Form, each Participant obligates himself or herself
to provide such information to the Plan Administrator.

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         (d)      The Company is authorized to withhold from any payment to
be made to a Participant, including any payroll and other payments not related
to the Plan, amounts of withholding and other taxes due in connection with any
transaction under the Plan, and a Participant's enrollment in the Plan will be
deemed to constitute his or her consent to such withholding.

                                  SECTION 12.
                              PLAN ADMINISTRATION

         (a)      The Plan shall be administered by the Committee. No member of
the Board will be eligible to participate in the Plan during his or her period
of Committee service.

         (b)      The Committee shall have the plenary power, subject to and
within the express provisions of the Plan:

                  (i)      to determine the commencement and termination date
of the offering of Shares under the Plan; and

                  (ii)     to interpret the terms of the Plan, establish and
revoke rules for the administration of the Plan and correct or reconcile any
defect or inconsistency in the Plan.

         (c)      The Committee may delegate all or part of its authority to
administer the Plan to the Plan Administrator, who may in turn delegate the
day-to-day operations of the Plan to the Custodian. The Custodian will
establish and maintain, as agent for the Participants, accounts for the purpose
of holding the Shares and/or cash contributions as may be necessary or
desirable for the administration of the Plan.

         (d)      The Board may waive or modify any requirement that a notice
or election be made or filed under the Plan a specified period in advance in an
individual case or by adoption of a rule or regulation under the Plan, without
the necessity of an amendment to the Plan.

                                  SECTION 13.
                                TRANSFERABILITY

         (a)      Any account maintained by the Custodian for the benefit of a
Participant with respect to shares acquired pursuant to the Plan may only be in
the name of the Participant; provided, however, that the Participant may elect
to maintain such account with right of joint ownership with such Participant's
spouse. Such election may only be made on a form (the "Joint Account Form")
provided by the Company.

         (b)      Neither payroll deductions credited to a Participant's
account nor any Purchase Rights or other rights to acquire Shares under the
Plan may be assigned, transferred, pledged or otherwise disposed of by
Participants other than by will or the laws of descent and distribution and,
during the lifetime of a Participant, Purchase Rights may be exercised only by
the Participant.

                                  SECTION 14.
                      MERGER OR LIQUIDATION OF THE COMPANY

         In the event the Company merges with another corporation and the
Company is not the surviving entity, or in the event all or substantially all
of the stock or assets of the Company is acquired by another company, or in the
event of certain other similar transactions, the Committee may, in its sole
discretion and in connection with such transaction, cancel each outstanding
Purchase Right and refund all sums previously collected from Participants under
the canceled outstanding Purchase Rights, or, in its discretion, cause each
Participant with outstanding Purchase Rights to have his or her outstanding
Purchase Right exercised

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immediately prior to such transaction and thereby have the balance of his or
her account applied to the purchase of whole Shares (subject to the maximum
dollar limitation of Section 7(c)) at the purchase price in effect for the
Purchase Period, which would be treated as ending with the effective date of
such transaction. The balance of the account not so applied will be refunded to
the Participant. In the event of a merger in which the Company is the surviving
entity, each Participant is entitled to receive, for each Share as to which
such Participant's outstanding Purchase Rights are exercised, as nearly as
reasonably may be determined by the Committee, in its sole discretion, the
securities or property that a holder of one Share was entitled to receive upon
the merger.

                                  SECTION 15.
                    ADJUSTMENT FOR CHANGES IN CAPITALIZATION

         To prevent dilution or enlargement of the rights of Participants under
the Plan, appropriate adjustments may be made in the event any change is made
to the Company's outstanding common stock by reason of any stock dividend,
stock split, combination of shares, exchange of shares or other change in the
Shares effected without the Company's receipt of consideration. Adjustments may
be made to the maximum number and class of securities issuable under the Plan,
the maximum number and class of securities purchasable per outstanding Purchase
Right and the number and class of securities and price per share in effect
under each outstanding Purchase Right. Any such adjustments may be made
retroactively effective to the beginning of the Purchase Period in which the
change in capitalization occurs, and any such adjustment will be made by the
Committee in its sole discretion.

                                  SECTION 16.
                           AMENDMENT AND TERMINATION

         The Committee may terminate or amend the Plan at any time, subject to
the following restrictions. First, the provisions of Sections 4, 5, 6, 7 and 8
which govern the formula for the automatic grant of Purchase Rights under the
Plan may not be amended more than once in any six (6) month period. Second, any
termination or amendment made to the Plan may not affect or change Purchase
Rights previously granted under the Plan without the consent of the affected
Participant, and any amendment that materially increases the benefits or number
of Shares under the Plan (except for certain allowable adjustments in the event
of changes to the Company's capital structure or for changes authorized by the
Plan to be made by the Committee or the Plan Administrator) or materially
modifies the eligibility requirements of the Plan shall be subject to
shareholder approval. If not sooner terminated by the Committee, the Plan shall
terminate at the time Purchase Rights have been exercised with respect to all
Shares reserved for grant under the Plan.

                                  SECTION 17.
                    SHAREHOLDER APPROVAL AND EFFECTIVE DATE

         The Plan is subject to the approval of shareholders of the Company
holding a majority of the shares of the Common Stock.

         The Plan shall be deemed to have been adopted as of the Effective Date
upon the date of its approval by the shareholders of the Company. Until the
Plan is approved by the shareholders, no Purchase Rights shall be deemed
granted or exercised under Sections 7 and 8. Upon approval of the Plan by the
Company's shareholders, Purchase Rights shall be deemed granted and exercised
as of the appropriate dates in the Plan as of the Effective Date, and Shares
purchased shall be deemed purchased as of the applicable Exercise Date. In the
event the Plan is not approved by the shareholders on or before the date which
is one year from the Effective Date, the Plan shall be deemed not to have been
adopted, and all payroll deduction amounts withheld on behalf of Participants
pursuant to Section 6 shall be refunded to such Participants.

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                                  SECTION 18.
                              NO EMPLOYMENT RIGHTS

         Participation in the Plan will not impose any obligations upon the
Company to continue the employment of the Participant for any specific period
and will not affect the right of the Company to terminate such person's
employment at any time, with or without cause.

                                  SECTION 19.
                                     COSTS

         Except as set forth in Section 10(b), costs and expenses incurred in
the administration of the Plan and the maintenance of accounts with the
Custodian may be shared by the Participant and the Company, to the extent
provided in this Section 19. Any brokerage fees and commissions for the
purchase of Shares under the Plan (including Shares purchased upon reinvestment
of dividends and distributions) will be shared equally by the Participant and
the Company, but any brokerage fees and commissions for the sale of Shares
under the Plan by a Participant will be borne by such Participant.

                                  SECTION 20.
                                    REPORTS

         After the close of each Purchase Period, each Participant in the Plan
will receive a report from the Custodian indicating the amount of the
Participant's contributions to the Plan during the Purchase Period, the amount
of the contributions applied to the purchase of Shares for the Purchase Period,
the purchase price per share in effect for the Purchase Period and the amount
of the contributions (if any) carried over to the next Purchase Period.

                                  SECTION 21.
                                 GOVERNING LAW

         The validity, construction and effect of the Plan and any rules and
regulations relating to the Plan will be determined in accordance with laws of
the State of Georgia, without giving effect to its principles of conflicts of
laws, and applicable federal law.

                                  SECTION 22.
                  COMPLIANCE WITH LEGAL AND OTHER REQUIREMENTS

         The Plan, the granting and exercising of Purchase Rights hereunder,
and the other obligations of the Company, the Plan Administrator and the
Custodian under the Plan will be subject to all applicable federal and state
laws, rules, and regulations, and to such approvals by any regulatory or
governmental agency as may be required. The Company may, in its discretion,
postpone the issuance or delivery of Shares upon exercise of Purchase Rights
until completion of such registration or qualification of such Shares or other
required action under any federal or state law, rule, or regulation, listing or
other required action with respect to any automated quotation system or stock
exchange upon which the Shares or other Company securities are designated or
listed, or compliance with any other contractual obligation of the Company, as
the Company may consider appropriate, and may require any Participant to make
such representations and furnish such information as it may consider
appropriate in connection with the issuance or delivery of Shares in compliance
with applicable laws, rules, and regulations, designation or listing
requirements, or other contractual obligations.

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                                  SECTION 23.
                                 EFFECT OF PLAN

         The provisions of the Plan shall, in accordance with its terms, be
binding upon and inure to the benefit of, all successors of each employee
participating in the Plan, including, without limitation, such employee's
estate and the executors, administrators or trustees thereof, heirs and
legatees, and any receiver, trustee in bankruptcy or representative of
creditors of such employee.

                                      -9-<PAGE>   1
                                                                   EXHIBIT 10.48

                           JOINT OWNERSHIP AGREEMENT

         This Joint Ownership Agreement, is made and entered into as of 12/8,
1998, by and between the parties listed as Co-Owners on Exhibit A, attached
hereto, (collectively referred to herein as the "Co-Owners"), and ITC Service
Company ("ITC"), as Agent.

                                  WITNESSETH:

         WHEREAS, the Co-Owners are the registered joint owners of the following
civil aircraft, hereinafter "Aircraft:"

                A. Beechcraft King Air B200 bearing manufacturer Serial No.
                   BB1439 and Federal Aviation Administration Registration
                   No. N583AT; and

                B. Beech Jet 400A bearing manufacturer Serial No. RK-157 and
                   Federal Aviation Administration Registration No. N397AT.

             and intend to own and operate the Aircraft as tenants-in-common;

         WHEREAS, the Co-Owners desire to enter into an agreement to operate
the Aircraft with flight crew on a Joint Ownership basis as defined in Section
91.501(c)(3) of the Federal Aviation Regulations (FAR); and

         WHEREAS, the Co-Owners desire to appoint ITC to act as their Agent in
undertaking certain duties and responsibilities of operating the aircraft and
administering the terms of this Joint Ownership Agreement;

         NOW, THEREFORE, the Co-Owners, declaring their intention to enter into
and be bound by this Joint Ownership Agreement, and for the good and valuable
consideration set forth below, hereby covenant and agree as follows:

                                   ARTICLE 1
                          RELATIONSHIP AMONG CO-OWNERS

         The Co-Owners shall own the Aircraft as tenants-in-common. The
percentage ownership interests of the Co-Owners in the Aircraft are set forth
on Exhibit B hereto. Each such interest and all of the rights and obligations
associated with each Co-Owner's tenant-in-common interest in the Aircraft shall
be known as an "Interest." Each Interest shall be entitled to equal

                                      -1-

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rights and privileges and subject to equal duties and obligations with every
other Interest, and each Interest shall be subject to all of the terms and
conditions hereof.

                                   ARTICLE 2
                        APPOINTMENT AND REMOVAL OF AGENT

         The Co-Owners hereby appoint ITC to act as their Agent (the "Agent")
with respect to certain aspects of the ownership and operation of the Aircraft
as more fully set forth in this Agreement. The Co-Owners may, at any time, by a
majority vote of the Interests in the Aircraft, remove ITC as Agent and appoint
another of the Co-Owners as Agent; provided, that any such removal and
replacement shall become effective only upon the replacement Co-Owner executing
and delivering a copy of this Agreement, as Agent, as evidence of its agreement
to be bound by the provisions hereof applicable to the Agent.

                                   ARTICLE 3
                           SCHEDULING USE OF AIRCRAFT

         3.01  Final Authority in Scheduling. The Agent shall have final
authority over the scheduling of the Aircraft, provided, however, that the
Agent will use its best efforts to accommodate the needs of the Co-Owners, and
to avoid conflicts in scheduling. As a general matter, the Agent will schedule
the Aircraft on a first come, first serve basis, except that in the event of
scheduling conflicts, priority will be given to the Co-Owner with the larger
percentage ownership interest in the Aircraft.

         3.02  Scheduling Procedure. Each Co-Owner shall provide the Agent with
requests for flight time and proposed flight schedules as far in advance of any
given flight as possible, and in any case, at least 24 hours in advance of the
Co-Owner's planned departure except in case of an emergency, as determined in
the sole discretion of the Agent, in which case the Agent shall use all
reasonable efforts to make the Aircraft available. Requests for flight time
shall be in a form, whether oral or written, mutually convenient to, and agreed
upon by, the parties. A Co-Owner shall provide the following scheduling and
flight time information for each proposed flight, as required by the Agent or
the flight crew:

                  1.  proposed departure point;
                  2.  destination;
                  3.  date and time of departure or arrival;
                  4.  the number of anticipated passengers;
                  5.  the nature and extent of luggage and/or cargo
                      to be carried;
                  6.  the date and time of a return flight, if any;
                  7.  any other information concerning the proposed

                                      -2-

<PAGE>   3

                  flight that may be pertinent or required by the Agent or the
                  flight crew.

                                   ARTICLE 4
                            MAINTENANCE OF AIRCRAFT

         The Agent, on behalf of and at the expense of the Co-Owners, shall be
solely responsible for securing maintenance, preventive maintenance and
required or otherwise necessary inspections on the Aircraft. No period of
maintenance, preventive maintenance or inspection shall be delayed or postponed
for the purpose of scheduling the Aircraft, unless said maintenance or
inspection can be safely conducted at a later time in compliance with all
applicable laws and regulations, and within the sole discretion of the pilot in
command.

                                   ARTICLE 5
                                AIRCRAFT SAFETY

         5.01  Provision of Flight Crew. The Agent shall employ on behalf of
the Co-Owners and furnish a fully qualified flight crew for all operations of
the Aircraft for the duration of this Agreement. Each Co-Owner shall have the
right to request that the Agent employ and furnish a particular fully
qualified flight crew with respect to a particular flight taken by such
Co-Owner and the Agent shall use its best efforts to comply with such request,
provided that such flight crew or member of a flight crew meets the
requirements of the FAR and such other safety standards established by the
Agent in its reasonable discretion.

         5.02  Flight Crew Control. The flight crew shall have full and
exclusive authority to exercise all of its duties and responsibilities in
regard to the safety of each flight conducted hereunder in accordance with
applicable FAR. Each Co-Owner shall be considered and, in fact, will be in
operational control of the Aircraft when that Co-Owner uses the Aircraft. Each
Co-Owner specifically agrees that the flight crew, in its sole discretion, may
terminate any flight, refuse to commence any flight, or take other action which
in the considered judgment of the pilot in command is necessitated by
considerations of safety. No such action of the pilot in command shall create
or support any liability for loss, injury, damage or delay to any Co-Owner or
any other person. The Co-Owners further agree that no party shall be liable for
delay or failure to furnish or return the Aircraft or crew pursuant to this
Joint Ownership Agreement when such failure is caused by government regulation
or authority, mechanical difficulty, war, civil commotion, strikes or labor
disputes, weather conditions, or acts of God.

                                      -3-
<PAGE>   4

                                   ARTICLE 6
                                   EXPENSES

         6.01 Payment of Expenses. The Agent, on behalf of the Co-Owners, shall
pay promptly when due and payable all bills and assessments for services or
supplies and other expenses incurred in connection with the maintenance,
operation, supervision and management of the Aircraft.

         6.02 Invoices.

                  (a) Annually, the Agent shall furnish to each Co-Owner an
invoice ("Annual Invoice") for the Indirect Operating Cost Charge applicable
to such Co-Owner such period which sets forth the amount of indirect
operating costs ("Indirect Operating Costs") and Other Charges to be paid by
each Co-Owner as determined pursuant to Section 7.01 hereof.

                  (b) Each month, the Agent shall furnish to each Co-Owner an
invoice ("Monthly Invoice") for flights taken by such Co-Owner during such
period which sets forth the amount of direct operating expenses ("Direct
Operating Expenses") to be paid by each Co-Owner for that invoiced period as
determined pursuant to Section 7.02 hereof, and any additional charges to be
paid by each Co-Owner for the invoiced period as determined pursuant to Section
7.03 hereof ("Line Item Charges"). In the event of substantial unanticipated
maintenance expenses, the Agent shall furnish to each Co-Owner an invoice
("Special Maintenance Invoice") for the Special Maintenance Charge applicable
to such Co-Owner determined pursuant to Section 7.02 hereof.

                  (c) The Agent shall have the authority in its reasonable
discretion to bill the Co-Owners in advance to cover future and anticipated
expenses in connection with the Aircraft.

         6.03 Maintenance of Books and Records. The Agent shall maintain
separate books and records for the operation and use of the Aircraft, including
records relating to the calculation of the Indirect Operating Costs and Other
Charges and the Direct Operating Expenses and the Line Item Charges. Such books
and records shall be open to inspection by the Co-Owners during normal business
hours.

                                   ARTICLE 7
                  ALLOCATION AND PAYMENT OF AIRCRAFT EXPENSES

         7.01 Sharing and Allocating Indirect Operating Costs and Other Charges

                  (a) Each calendar year, the Agent will prepare an estimate of
the

                                      -4-
<PAGE>   5
Indirect Operating Costs attributable to each of the Aircraft. The estimates of
Indirect Operating Costs shall be determined in the reasonable discretion of the
Agent and shall include, but are not limited to:

                  1.     taxes;
                  2.     pilot expenses not directly attributable to a
                         particular flight;
                  3.     passenger amenities, landing & aircraft RON
                         fees not directly attributable to a particular
                         flight;
                  4.     flight crew salaries & benefits;
                  5.     contract pilots;
                  6.     training;
                  7.     legal and professional fees;
                  8.     insurance;
                  9.     hangar rental;
                  10.    communications;
                  11.    supplies; and
                  12.    miscellaneous.

                  (b)    Each calendar year, the Agent, in its reasonable
     discretion, will determine appropriate charges (the "Other Charges") to
     reflect the annual wear and tear to the Aircraft resulting from the
     Co-Owners' use of the Aircraft.

                  (c)    Each Co-Owner shall be responsible for its allocable
     share of the Indirect Operating Costs and the Other Charges attributable to
     the Aircraft during an annual invoice period. Each Co-Owner's allocable
     share of such costs for the Aircraft shall be determined by multiplying
     total amount of Indirect Operating Costs and Other Charges for the invoice
     period by the percentage of the total use of the Aircraft during the
     invoice period attributable to that Co-Owner (based on miles of operation).

                  (d)    Amounts paid by the Co-Owners for Indirect Operating
     Costs shall be used to reimburse the Agent for the payment of such Indirect
     Operating Costs. Other Charges paid by the Co-Owners shall be credited to
     each of the Co-Owners in proportion to their relative ownership interests
     in the Aircraft.

         7.02     Sharing and Allocating of Direct Operating Expenses.

                  (a)     Each Co-Owner shall be responsible for its allocable
     share of the Direct Operating Expenses attributable to the Aircraft during
     an invoice period. Each Co-

                                      -5-

<PAGE>   6
Owner's allocable share of such expenses shall be determined by multiplying the
number of miles such Co-Owner operated the Aircraft during the invoice period
by an amount estimated by the Agent to cover Direct Operating Expenses. However,
this amount may be adjusted in the reasonable discretion of the Agent such that
the amount will approximate the Direct Operating Expenses incurred by the use of
the Aircraft. The Agent shall base its estimate of Direct Operating Expenses on
the following factors, but is not limited to considering only these factors:

                  1.  fuel, oil, lubricants, and other additives used; during
                      and by reason of a flight;
                  2.  engine, thrust reverser, and propeller reserve
                      allowances, as applicable;
                  3.  hot section reserve allowances;
                  4.  air frame and systems maintenance;
                  5.  a ten (10) percent vectoring fee; and
                  6.  a charge of $150 for any flight of less than 250
                      nautical miles taken in the Beech Jet 400A
                      bearing manufacturer Serial No. RK-157 and
                      Federal Aviation Administration Registration
                      No. N397AT to cover certain higher costs of
                      short flights.

                  (b) Each Co-Owner shall be responsible for its allocable share
of any substantial, unanticipated maintenance expenses attributable to the
Aircraft during any calendar year. Each Co-Owner's allocable share of such
expenses shall be determined by multiplying the number of miles such Co-Owner
operated the Aircraft during that calendar year by an amount estimated by the
Agent to cover such unanticipated maintenance expenses.

                  (c) Each Co-Owner will be invoiced monthly for Direct
Operating Expenses based on the number of nautical miles actually flown by each
Co-Owner. Each Co-Owner will be invoiced annually for Direct Operating Expenses
incurred as substantial unanticipated maintenance expenses based on the number
of nautical miles actually flown by each Co-Owner.

         7.03  Sharing and Allocating of Line Item Charges.  Each Co-Owner shall
be responsible for Line Item Charges relating to the ownership, operation, and
maintenance of the Aircraft attributable to such Co-Owner during each month.
Line Item Charges shall be determined in the reasonable discretion of the Agent
and shall include, but are not limited to:

                  1.  tie down expenses;

                  2.  catering expenses;

                  3.  customs fees;

                                      -6-
<PAGE>   7

                 4.  landing fees, ramp fees, and parking fees; and
                 5.  applicable pilot expenses directly attributable to such
                     flight

The amount of Line Item Charges allocated to and to be paid by each Co-Owner
shall be determined by the Agent.

        7.04  Procedure for Payment of Expenses by Co-Owners. Within fifteen
(15) days after the date of an invoice described in Section 6.02 hereof, each
Co-Owner shall pay to the Agent such Co-Owner's share of applicable charges as
set forth in the invoice. Any Co-Owner who is more than thirty (30) days in
arrears in payment of an invoice prepared pursuant to this Agreement, shall not
be permitted to use the Aircraft.

         7.05  Depreciation. For each calendar year, each Co-Owner shall be
allocated its allocable share of the depreciation attributable to the Aircraft.
Each Co-Owner's allocable share of such depreciation shall be determined by
multiplying the total depreciation for the calendar year by each Co-Owner's
Interest.

        7.06  Tax Liabilities and Benefits. For each calendar year, each
Co-Owner shall be entitled to a pro rata percent share of the gain, loss,
deduction, credit, or any tax benefits or liabilities with respect to the
Aircraft.

                                   ARTICLE 8
                                     BUDGET

         For each calendar year, the Agent shall prepare a budget ("Budget")
for the expenses attributable to the operation, use and occupancy of the
Aircraft. The Budget shall set forth an estimate of the total Indirect
Operating Costs per aircraft for such calendar year (including any applicable
reserves), the total Direct Operating Expenses for such calendar year
(including any applicable reserves), and the total estimated number of flight
miles for such calendar year. The Budget shall also set forth itemized estimates
of the Indirect Operating Costs and Direct Operating Expenses for such
calendar year. The Budget for each invoice period shall be the estimated total
Indirect Operating Costs and Direct Operating Expenses for such calendar year
allocated equally to each applicable invoice period. The Budget shall become
final when approved by the Co-Owners, with such changes as they may require, in
accordance with Section 9.02 or Section 9.03 hereof.

                                      -7-
<PAGE>   8
                                   ARTICLE 9
                      RIGHTS AND OBLIGATIONS OF CO-OWNERS.

         9.01  Meetings.  Upon the request of any Co-Owner, the Agent shall, and
any Co-Owner may, call a meeting of the Co-Owners to consider and act upon any
matter which may properly be the subject of such consideration and action
including, but not limited to, actions required pursuant to Section 9.04 hereof,
by giving notice thereof to all Co-Owners at least one (1) day prior to the date
of such meeting, which notice shall contain the date, time and place of the
meeting, as well as the subject matter or matters to be considered and acted
upon by the Co-Owners. Only such matters as shall have been specified in such
notice shall be considered and acted upon at the meeting unless otherwise
unanimously agreed by all Co-Owners entitled to notice. A written waiver of
notice, signed before or after a meeting by a Co-Owner entitled to notice of
such meeting, or the presence of the Co-Owner at the meeting (which shall be
deemed to be a waiver of notice) shall be deemed equivalent to notice.

         9.02  Voting.  At any meeting of the Co-Owners, each Co-Owner shall be
entitled to vote in accordance with such Co-Owner's Interest and such votes may
be cast either in person or by Agent or proxy duly authorized in writing. Except
as otherwise provided herein, the vote of the Co-Owners owning at least a
majority of all the Interests voting, in person or by proxy, shall decide all
questions properly submitted for a vote of the Co-Owners.

         9.03  Action by Written Consent.  Any action which the Co-Owners are
authorized to take at a meeting may be taken without a meeting and without
notice if a consent in writing setting forth the action so taken shall be signed
by Co-Owners owning at least a majority of the Interests, and such consent shall
have the same force and effect as a unanimous vote of the Co-Owners.

         9.04  Signature of Co-Owners Required.  Any legal document or agreement
relating to the ownership, operation, or use of the Aircraft shall be executed
by each of the Co-Owners, provided, however, that agreements between the Agent
and any flight crew employed by the Agent pursuant to Article 2 hereof and
agreements with third parties related to maintenance of the Aircraft and safe
operation of the Aircraft pursuant to Articles 3, 4 and 5 hereof, shall be
executed solely by the Agent on behalf of the Co-Owners, provided, further, that
each of the Co-Owners may grant to the Agent a power of attorney to execute any
legal documents or agreements relating to the ownership, operation or use of the
Aircraft by and for the benefit of such Co-Owner.

         9.05  Waiver of Partition.  The Co-Owners hereby waive whatever rights
they may have to demand the partition, or sale for partition, of the Aircraft
under the laws of the State of Georgia, or any other law.

                                      -8-
<PAGE>   9
         9.06     Termination of Co-Owner's Interest. A Co-Owner's Interest may
be terminated at any time upon the affirmative vote of Co-Owners owning at least
a majority of all of the Interests in accordance with Section 9.02 and Section
9.03. Upon the termination of a Co-Owner's Interest, the terminated Co-Owner's
Interest shall be purchased for the fair market value of the Interest by those
Co-Owners affirmatively voting to terminate such Interest, pro rata in
accordance with their Interests or as they may otherwise agree. For purposes of
this Section 9.06, the Agent, in its reasonable discretion, shall be responsible
for determining the fair market value of a terminated Co-Owner's Interest.

                                   ARTICLE 10
                         REPRESENTATIONS AND WARRANTIES

         Each Co-Owner represents and warrants that:

                  (a)     It will use the Aircraft, consistent with FAR Part
91.501, for and on account of its own business only, (including without
limitation, with respect to itself, its subsidiaries, and its affiliates), and
will not use the Aircraft for the purposes of providing transportation of
passengers or cargo in air commerce for compensation or hire:

                  (b)     It will refrain from incurring any mechanic's or other
lien in connection with inspection, preventative maintenance, maintenance or
storage of the Aircraft, whether permissible or impermissible under this Joint
Ownership Agreement, not will it make any attempt to convey, mortgage, assign,
lease or any way alienate the Aircraft or create any kind of lien or security
interest involving the Aircraft or do anything or take any action that might
mature into such a lien;

                  (c)     During the term of this Joint Ownership Agreement, it
will abide by and conform to all such laws, governmental and airport orders,
rules and regulations, as shall from time to time be in effect relating in any
way to the operation and use of the Aircraft under this Joint Ownership
Agreement; and

                  (d)     It will comply with and take (or cause to be taken)
all such actions as may reasonably be required to assure compliance with the
terms and conditions of any insurance policies obtained by the Co-Owners.

                                   ARTICLE 11
                             ASSIGNMENT OF INTERESTS

         Neither this Joint Ownership Agreement nor any party's interest herein
shall be assignable to any other party whatsoever. This Joint Ownership
Agreement shall inure to the benefit of and be binding upon the parties hereto,
their heirs, representatives and successors.

                                      -9-

<PAGE>   10
                                   ARTICLE 12
                                  TAX ELECTION

         12.01 Election. If, for federal income tax purposes, this Joint
Ownership Agreement, the relationship established hereby, and the operations
conducted hereunder are regarded as a partnership, as that term is defined by
the Internal Revenue Code of 1986, as amended, then the Co-Owners hereby elect
not to be treated as a partnership and elect to be excluded from the
application of all of the provisions of Subchapter K, Chapter 1, Subtitle A, of
the Internal Revenue Code of 1986, as amended. In making this election, each
Co-Owner acknowledges that any income derived by it by reason of its ownership
of an Interest can be adequately determined without the necessity for any
computation of partnership taxable income, and each Co-Owner agrees not to give
any notices or take any other action inconsistent with the election hereby made.

         12.02 Evidence. The Agent is hereby authorized and directed to execute
such evidence of the foregoing election, or to make such an election if the
election herein contained is insufficient for any reason, as may be required by
the Secretary of the Treasury of the United States or the Internal Revenue
Service. Each Co-Owner agrees to execute such documents and to furnish such
other evidences as may be required to evidence such election.

                                   ARTICLE 13
                                 MISCELLANEOUS

         13.01 Notice. Any notice, demand, request or report required or
permitted to be given or made to a Co-Owner under this Joint Ownership
Agreement shall be in writing and shall be deemed given or made when delivered
in person or when sent by first class United States mail or by other means of
written communication to the Co-Owner at its address set forth on EXHIBIT A
attached hereto.

         13.02 Governing Law: Separability of Provisions. The laws of the State
of Georgia (excluding the conflicts of laws rules thereof) shall govern the
validity of this Joint Ownership Agreement, the construction of its terms and
interpretation of the rights and duties of the parties. If any provision of this
Joint Ownership Agreement shall be held to be invalid, the remainder of this
Joint Ownership Agreement shall not be affected thereby.

         13.03 Entire Agreement. This constitutes the entire agreement among
the parties; it supersedes any prior agreement or understandings among them,
oral or written, all of which are hereby canceled.

         13.04 Headings, etc. The headings in this Joint Ownership Agreement are

                                      -10-

<PAGE>   11
inserted for convenience of reference only and shall not affect interpretation
of this Joint Ownership Agreement. Wherever from the context it appears
appropriate, each term stated in either the singular or the plural shall include
the singular and the plural, and pronouns stated in either the masculine, the
feminine, or the neuter gender shall include the masculine, feminine and the
neuter.

                  13.05 Binding Provisions. The covenants and agreements
contained herein shall be binding upon and inure to the benefit of the heirs,
executors, administrators, and successors of the respective parties hereto.

                  13.06 No Waiver. The failure of any Co-Owner to seek redress
for violation, or to insist on strict performance or, any covenant or condition
of this Joint Ownership Agreement shall not prevent a subsequent act which would
have constituted a violation from having the effect of an original violation.

                  130.7 Further Action. The parties shall execute and deliver
documents, provide all information and take or refrain from taking action as may
be necessary or appropriate to achieve the purposes of this Joint Ownership
Agreement.

                  13.08 Insurance Provisions. Aviation insurance shall be
maintained at all times by Agent through insurance carriers reasonably
acceptable to Co-Owners and shall include each of the Co-Owners as Joint Named
Insureds for Bodily Injury and Property Damage liability, including passengers,
for limits not less than $100,000,000 Combined Single Limits per occurrence. The
aircraft shall be insured against loss by Physical Damage for 100% of its
current value. Such Physical Damage insurance shall be structured on a "Stated
Value" basis, and all such losses shall be adjusted exclusively through Agent.
The conditions of insurance shall be maintained in accordance with the actual
use and territory of operations of the Aircraft. The amount and type of
insurance carried may be changed from time to time by Agent as it deems
reasonably necessary to protect the interest of the Co-Owners and to adhere to
then current aviation insurance standards.

                  13.09 Indemnification. (a) Each party to this Agreement will
indemnify the others including, without limitation, stockholders, or any of its,
or their directors, officers, agents, employees, partners and protect, defend
and hold one another harmless from and against any and all loss, cost, damage,
injury or expense ("Loss"), incurred by reason of any breach by the indemnifying
party of any of its representations of obligations set forth in this Agreement.

                  (b) Each of the parties also hereby indemnifies and shall hold
the others harmless against any Loss incurred as the direct result of or arising
out of the imposition

                                      -11-

<PAGE>   12
on the Aircraft of any Federal or other tax lien or the foreclosure thereof by
virtue of the failure to pay or underpayment by the indemnifying party of the
Federal or other taxes payable by such indemnifying party.

                  (c)     In all cases, the Co-Owners agree that the proceeds of
any insurance to which they are entitled herein shall be deemed to be accepted
as the Co-Owners' sole recourse against Agent for any Loss incurred by the
Co-Owner with respect to ownership or operation of the Aircraft or otherwise in
connection with this Agreement, except to the extent cause by the gross
negligence or willful misconduct of Agent.

                  13.10 Counterparts. This Joint Ownership Agreement may be
executed simultaneously in two or more counterparts, any one of which need not
contain the signatures of more than one party, but all such counterparts taken
together will constitute one and the same Joint Ownership Agreement.

                                      -12-

<PAGE>   13

         IN WITNESS WHEREOF, the parties hereto have caused the signatures of
their authorized representatives to be affixed below to be effective on the day
and year first above written. The persons signing below warrant their authority
to sign.

                                             AGENT:

                                             ITC Service Company

                                             By: /s/
                                                ------------------------
                                                Chief Pilot
ATTEST:

/s/
---------------------------
Secretary

                                             CO-OWNERS:

                                             ITC Service Company

                                             By: /s/
                                                ------------------------
                                                President

ATTEST:

/s/
---------------------------
Secretary

                                             Powertel, Inc.

                                             By: /s/
                                                ------------------------

ATTEST:

/s/
---------------------------
Assistant Secretary

                                      -13-

<PAGE>   14

                                         ITC*DeltaCom Communications, Inc.

                                         By: /s/
                                            ------------------------------------

ATTEST:

/s/
-----------------------------
Secretary

                                         KNOLOGY Holding, Inc.

                                         By: /s/
                                            ------------------------------------

ATTEST:

/s/
-----------------------------
Secretary

                                      -14-
<PAGE>   15

                                                                    EXHIBIT A

                                  CO-OWNERS

IC Service Company
1239 O. G. Skinner Drive
West Point, GA 31833

Powertel, Inc.
1233 O. G. Skinner Drive
West Point, GA 31833

ITC*DeltaCom Communications, Inc.
1241 O. G. Skinner Drive
West Point, GA 31833

KNOLOGY Holdings, Inc.
1241 O. G. Skinner Drive
West Point, GA 31833

                                     - 15 -
<PAGE>   16

                                                                    EXHIBIT B

                         Percentage of Interest Owned

<TABLE>
<S>                                      <C>
ITC Service Company                      97%
1239 O. G. Skinner Drive
West Point, GA 31833

Powertel, Inc.                            1%
1233 O. G. Skinner Drive
West Point, GA 31833

ITC*DeltaCom Communications, Inc.         1%
1241 O. G. Skinner Drive
West Point, GA 31833

KNOLOGY Holdings, Inc.                    1%
1241 O. G. Skinner Drive
West Point, GA 31833
</TABLE>

                                      -16-

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