Document:

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                                                             EXECUTION VERSION

                                 U.S. $4,950,000

                             BRIDGE CREDIT AGREEMENT

                           Dated as of August 8, 2000

                                      Among

                              ORBCOMM GLOBAL, L.P.

                                   as Borrower

                                       and

                             TELEGLOBE HOLDING CORP.

                                    as Lender
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                               TABLE OF CONTENTS

                                                                          Page

                                    ARTICLE I
                                   DEFINITIONS
SECTION 1.01.  Defined Terms.................................................1
SECTION 1.02.  Computation of Time Periods...................................8
SECTION 1.03.  Accounting Terms..............................................8

                                   ARTICLE II

                        AMOUNTS AND TERMS OF THE ADVANCE
SECTION 2.01.  The Advance...................................................9
SECTION 2.02.  Making the Advance............................................9
SECTION 2.03.  Repayment.....................................................9
SECTION 2.04.  Reduction and Termination of the Commitments..................9
SECTION 2.05.  Optional Prepayments..........................................9
SECTION 2.06.  Interest......................................................9
SECTION 2.07.  Payments and Computations....................................10
SECTION 2.08.  Taxes........................................................10
SECTION 2.09.  Use of Proceeds..............................................11
SECTION 2.10.  Evidence of Debt.............................................11

                                   ARTICLE III

                              CONDITIONS OF LENDING
SECTION 3.01.  Conditions Precedent to Borrowing............................11

                                   ARTICLE IV

                         REPRESENTATIONS AND WARRANTIES
SECTION 4.01.  Representations and Warranties of the Borrower...............13

                                    ARTICLE V

                            COVENANTS OF THE BORROWER
SECTION 5.01.  Affirmative Covenants........................................18
SECTION 5.02.  Negative Covenants...........................................20

                                   ARTICLE VI

                                EVENTS OF DEFAULT
SECTION 6.01.  Events of Default............................................23

                                      -i-
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                                   ARTICLE VII

                                  MISCELLANEOUS
SECTION 7.01.  Amendments, Etc..............................................26
SECTION 7.02.  Notices, Etc.................................................26
SECTION 7.03.  No Waiver; Remedies..........................................26
SECTION 7.04.  Indemnity....................................................26
SECTION 7.05.  Right of Set-off.............................................27
SECTION 7.06.  Integration..................................................27
SECTION 7.07.  Binding Effect...............................................27
SECTION 7.08.  GOVERNING LAW................................................27
SECTION 7.09.  Execution in Counterparts....................................27
SECTION 7.10.  WAIVER OF JURY TRIAL.........................................27

SCHEDULES:

Schedule 4.01(b)  -     Subsidiaries
Schedule 4.01(d)  -     Authorizations, etc
Schedule 4.01(k)  -     ERISA Events
Schedule 4.01(r)  -     Patents, Copyrights and other Intellectual Property
Schedule 4.01(s)  -     Scheduled Liens

EXHIBITS

Exhibit A   -     Form of Note
Exhibit B   -     Notice of Borrowing
Exhibit C   -     Form of Security Agreement
Exhibit D   -     Business Plan

                                      -ii-
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                            BRIDGE CREDIT AGREEMENT

            BRIDGE CREDIT AGREEMENT dated as of August 8, 2000 (this
"Agreement") between ORBCOMM GLOBAL, L.P., a Delaware limited partnership (the
"Borrower") and TELEGLOBE HOLDING CORP., a Delaware corporation (the "Lender").

            Introductory Statement. As of the date hereof, Lender owns,
indirectly through subsidiaries, a majority interest in the Borrower. The
Borrower is soliciting additional capital from long-term investors or strategic
partners and contemplates a substantial reorganization of its business to
conserve funds while remaining a going concern. The Borrower requires an
immediate extension of credit to enable it to pay its expenses in the ordinary
course of business and prepare for an orderly sale and or restructuring. The
Lender is willing to provide Borrower up to $4,950,000 in secured loans for such
purposes, subject to the terms and conditions set forth herein. As of the date
hereof, the Lender has advanced $300,000 to the Borrower, which amount is deemed
part of the Advance (as defined below) made hereunder and is a secured loan
pursuant to the Collateral Documents (as defined below).

            The parties hereto hereby agree as follows:

                                   ARTICLE I

                                  DEFINITIONS

            SECTION 1.1. Defined Terms. As used in this Agreement, the following
terms shall have the following meanings (such meanings to be equally applicable
to both the singular and plural forms of the terms defined):

            "Advance" means the advance by the Lender to the Borrower pursuant
to Article II hereof.

            "Affiliate" means, as to any Person, any other Person that, directly
      or indirectly, controls, is controlled by or is under common control with
      such Person or is a director or officer of such Person. For purposes of
      this definition, the term "control" (including the terms "controlling,"
      "controlled by" and "under common control with") of a Person means the
      possession, direct or indirect, of the power to vote 10% or more of the
      Voting Stock of such Person or to direct or cause the direction of the
      management and policies of such Person, whether through the ownership of
      Voting Stock, by contract or otherwise.

            "Borrower" has the meaning specified in the recital of parties to
this Agreement.

            "Borrower's Account" means the account of the Borrower maintained by
      the Borrower with First Union National Bank, Capital Management and
      Institutional Trust Division at its office at 740 15th Street N.W., 3rd
      Floor, Washington, D.C., 20005, Account No. #705 329 1091.
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                                                                               2

            "Business Day" means a day of the year on which banks are not
      required by law or authorized to close in New York City.

            "Business Plan" means the Business Plan attached hereto as Exhibit
      D.

            "Capital Expenditures" means, with respect to any Person any
      expenditures for, and any Debt (including obligations under Capitalized
      Leases) assumed or incurred in connection with the acquisition of,
      equipment, fixed assets, real property or improvements, or for
      replacements or substitutions therefor or additions thereto, that are
      required to be capitalized under GAAP on the balance sheet of such Person.

            "Capital Stock" means any and all shares, interests, participations
      or other equivalent ownership interests in Borrower and its Subsidiaries
      and any and all warrants, rights or options to purchase any of the
      foregoing.

            "Capitalized Leases" has the meaning specified in clause (e) of the
      definition of Debt.

            "Cash Equivalents" means (a) marketable direct obligations issued
      by, or unconditionally guaranteed by, the United States Government or
      issued by any agency thereof and backed by the full faith and credit of
      the United States, in each case maturing within one year from the date of
      acquisition; (b) commercial paper of an issuer rated at least A-2 by S&P
      or P-2 by Moody's, or carrying an equivalent rating by a nationally
      recognized rating agency, if both of the two named rating agencies cease
      publishing ratings of commercial paper issuers generally, and maturing
      within one month from the date of acquisition; (c) repurchase obligations
      of any commercial bank organized under the laws of the United States of
      America or any state thereof having combined capital and surplus of not
      less than $500,000,000, having a term of not more than 30 days, with
      respect to securities issued or fully guaranteed or insured by the United
      States government; (d) certificates of deposit, time deposits, eurodollar
      time deposits or overnight bank deposits having maturities of one month or
      less from the date of acquisition issued by any commercial bank satisfying
      the requirement of clause (c) of this definition; (e) securities with
      maturities of one month or less from the date of acquisition backed by
      standby letters of credit issued by any commercial bank satisfying the
      requirements of clause (c) of this definition; or (f) shares of money
      market mutual or similar funds which invest exclusively in assets
      satisfying the requirements of clauses (a) through (e) of this definition.

            "Closing Date" means the date upon which the conditions precedent to
      the making of the Advance set forth in Section 3.01 have been satisfied or
      waived by the Lender.

            "Collateral" means all "Collateral" referred to in the Collateral
      Documents and all property that is subject to any Lien in favor of
      the Lender.
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                                                                               3

            "Collateral Documents" means the Security Agreement.

            "Commitment" means the commitment of the Lender to make Advances
      hereunder in the aggregate amount of $4,950,000.

            "Consolidated" refers to the consolidation of financial statements
      in accordance with GAAP.

            "Debt" of any Person means, without duplication, the following:

            (a)   all indebtedness of such Person for borrowed money,

            (b) all obligations of such Person for the deferred purchase price
      of property or services (other than trade payables not overdue by more
      than 90 days incurred in the ordinary course of such Person's business),

            (c) all obligations of such Person evidenced by notes, bonds,
      debentures or other similar instruments,

            (d) all indebtedness created or arising under any conditional sale
      or other title retention agreement with respect to property acquired by
      such Person (even though the rights and remedies of the seller or lender
      under such agreement in the event of default are limited to repossession
      or sale of such property),

            (e) all obligations of such Person as lessee under leases that have
      been or should be, in accordance with GAAP, recorded as capital leases
      ("Capitalized Leases"),

            (f) all obligations, contingent or otherwise, of such Person under
      acceptance, letter of credit or similar facilities,

            (g) all obligations of such Person to purchase, redeem, retire,
      defease or otherwise acquire for value any capital stock of such Person or
      any warrants, rights or options to acquire such capital stock, valued, in
      the case of Redeemable Preferred Stock, at the greater of its voluntary or
      involuntary liquidation preference plus accrued and unpaid dividends,

            (h) all obligations of such Person in respect of Hedge Agreements,

            (i) all Debt of others referred to in clauses (a) through (h) above
      guaranteed directly or indirectly in any manner by such Person, or in
      effect guaranteed directly or indirectly by such Person through an
      agreement (i) to pay or purchase such Debt or to advance or supply funds
      for the payment or purchase of such Debt, (ii) to purchase, sell or lease
      (as lessee or lessor) property, or to purchase or sell services, primarily
      for the purpose of enabling the debtor to make payment of such Debt or to
      assure the holder of such Debt against loss, (iii) to supply funds to or
      in any other manner invest in the debtor
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                                                                               4

      (including any agreement to pay for property or services irrespective of
      whether such property is received or such services are rendered) or (iv)
      otherwise to assure a creditor against loss, and

            (j) all Debt referred to in clauses (a) through (h) above secured by
      (or for which the holder of such Debt has an existing right, contingent or
      otherwise, to be secured by) any Lien on property (including, without
      limitation, accounts and contract rights) owned by such Person, even
      though such Person has not assumed or become liable for the payment of
      such Debt.

            "Default" means any Event of Default or any event that would
      constitute an Event of Default but for the requirement that notice be
      given or time elapse or both.

            "Environmental Law" means any Federal, state, local or foreign
      statute, law, ordinance, rule, regulation, code, order, writ, judgment,
      injunction, decree or judicial or agency interpretation, policy or
      guidance relating to pollution or protection of the environment, health,
      safety or natural resources, including, without limitation, those relating
      to the use, handling, transportation, treatment, storage, disposal,
      release or discharge of Hazardous Materials.

            "ERISA" means the Employee Retirement Income Security Act of 1974,
      as amended from time to time, and the regulations promulgated and rulings
      issued thereunder.

            "ERISA Affiliate" of any Person means any other Person that for
      purposes of Title IV of ERISA is a member of the controlled group of
      Borrower, or under common control with Borrower, within the meaning of
      Section 414 of the Internal Revenue Code.

            "ERISA Event" means (a)(i) the occurrence of a reportable event,
      within the meaning of Section 4043 of ERISA, with respect to any Plan
      unless the 30-day notice requirement with respect to such event has been
      waived by the PBGC or (ii) the requirements of Section 4043(b) of ERISA
      apply with respect to a contributing sponsor, as defined in Section
      4001(a)(13) of ERISA, of a Plan, and an event described in paragraph (9),
      (10), (11), (12) or (13) of Section 4043(c) of ERISA is reasonably
      expected to occur with respect to such Plan within the following 30 days;
      (b) the application for a minimum funding waiver with respect to a Plan;
      (c) the provision by the administrator of any Plan of a notice of intent
      to terminate such Plan, pursuant to Section 4041(a)(2) of ERISA (including
      any such notice with respect to a plan amendment referred to in Section
      4041(e) of ERISA); (d) the cessation of operations at a facility of
      Borrower or any ERISA Affiliate in the circumstances described in Section
      4062(e) of ERISA; (e) the withdrawal by Borrower or any ERISA Affiliate
      from a Multiple Employer Plan during a plan year for which it was a
      substantial employer, as defined in Section 4001(a)(2) of ERISA; (f) the
      conditions for imposition of a lien under Section 302(f) of ERISA shall
      have been met with respect to any Plan; (g) the adoption of an
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                                       5

      amendment to a Plan requiring the provision of security to such Plan
      pursuant to Section 307 of ERISA; or (h) the institution by the PBGC of
      proceedings to terminate a Plan pursuant to Section 4042 of ERISA, or the
      occurrence of any event or condition described in Section 4042 of ERISA
      that constitutes grounds for the termination of, or the appointment of a
      trustee to administer, such Plan.

            "Events of Default" has the meaning specified in Section 6.01
      hereof.

            "GAAP" has the meaning specified in Section 1.03 hereof.

            "Hazardous Materials" means (a) petroleum or petroleum products,
      by-products or breakdown products, radioactive materials,
      asbestos-containing materials, polychlorinated biphenyls and radon gas and
      (b) any other chemicals, materials or substances designated, classified or
      regulated as hazardous or toxic or as a pollutant or contaminate under any
      Environmental Law.

            "Hedge Agreements" means interest rate swap, cap or collar
      agreements, interest rate future or option contracts, currency swap
      agreements, currency future or option contracts and other similar
      agreements designed to hedge against fluctuations in interest rates or
      foreign exchange rates.

            "Indemnified Party" has the meaning specified in Section 7.04
      hereof.

            "Insufficiency" means, with respect to any Plan, the amount, if any,
      of its unfunded benefit liabilities, as defined in Section 4001(a)(18) of
      ERISA.

            "Internal Revenue Code" means the Internal Revenue Code of 1986, as
      amended from time to time, and the regulations promulgated and rulings
      issued thereunder.

            "Internal Revenue Service" means the United States Internal Revenue
      Service.

            "Investment" in any Person means any loan or advance to such Person,
      any purchase or other acquisition of any capital stock, warrants, rights,
      options, obligations or other securities of such Person, any capital
      contribution to such Person or any other investment in such Person,
      including, without limitation, any arrangement pursuant to which the
      investor incurs Debt of the types referred to in clauses (i) and (j) of
      the definition of "Debt" in respect of such Person.

            "Lender" has the meaning specified in the recital of parties to this
      Agreement.

            "Lender's Account" means the account of the Lender maintained by the
      Lender with Bank of America at its office at New York, New York, Account
      No. 12338-29451.

            "Lending Office" means the office of the Lender specified in Section
      7.02 hereof.
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                                                                               6

            "Lien" means any lien, security interest, mortgage or other charge
      or encumbrance of any kind, or any other type of preferential arrangement,
      including, without limitation, the lien or retained security title of a
      conditional vendor and any easement, right of way or other encumbrance on
      title to real property.

            "Loan Documents" means this Agreement, the Note (if any) and the
      Collateral Documents.

            "Material Contracts" has the meaning specified in Section 4.01(v)
      hereof.

            "Maturity Date" means September 15, 2000.

            "Moody's" means Moody's Investors Service, Inc.

            "Multiemployer Plan" of any Person means a multiemployer plan, as
      defined in Section 4001(a)(3) of ERISA, to which Borrower or any ERISA
      Affiliate is making or accruing an obligation to make contributions, or
      has within any of the preceding five plan years made or accrued an
      obligation to make contributions.

            "Multiple Employer Plan" of any Person means a single employer plan,
      as defined in Section 4001(a)(15) of ERISA, that (a) is maintained for
      employees of such Person or any of its ERISA Affiliates and at least one
      Person other than such Person and its ERISA Affiliates or (b) was so
      maintained and in respect of which such Person or any of its ERISA
      Affiliates could have liability under Section 4064 or 4069 of ERISA in the
      event such plan has been or were to be terminated.

            "Note" has the meaning specified in Section 2.10 hereof.

            "Notice of Borrowing" has the meaning specified in Section 2.02
      hereof.

            "Obligation" means, with respect to any Person, any obligation of
      such Person of any kind, including, without limitation, any liability of
      such Person on any claim, whether or not the right of any creditor to
      payment in respect of such claim is reduced to judgment, liquidated,
      unliquidated, fixed, contingent, matured, disputed, undisputed, legal,
      equitable, secured or unsecured, and whether or not such claim is
      discharged, stayed or otherwise affected by any bankruptcy, insolvency,
      reorganization or other similar proceeding. Without limiting the
      generality of the foregoing, the Obligations under the Loan Documents
      include (a) the obligation to pay principal, interest, charges, expenses,
      indemnities and other amounts payable under any Loan Document and (b) the
      obligation to reimburse any amount in respect of any of the foregoing that
      the Lender, in its sole discretion, may elect to pay or advance on behalf
      of Borrower.

            "Other Taxes" has the meaning specified in 2.08(b) hereof.
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                                                                               7

            "PBGC" means the Pension Benefit Guaranty Corporation.

            "Permitted Liens" means (a) Liens for taxes, assessments and
      governmental charges or levies not yet due and payable or which are not
      required to be paid under Section 5.01(b) hereof; (b) Liens imposed by
      law, such as materialmen's, mechanics', carriers', workmen's and
      repairmen's Liens and other similar Liens arising in the ordinary course
      of business securing obligations that are not overdue for a period of more
      than 60 days or that are being contacted in good faith by appropriate
      proceedings; and (c) pledges or deposits to secure obligations under
      workers' compensation laws or similar legislation or to secure public or
      statutory obligations.

            "Person" means an individual, partnership, corporation (including a
      business trust), limited liability company, joint stock company, trust,
      unincorporated association, joint venture or other entity, or a government
      or any political subdivision or agency thereof.

            "Plan" means a Single Employer Plan, Multiemployer Plan or a
      Multiple Employer Plan.

            "Preferred Stock" means, with respect to any corporation, capital
      stock issued by such corporation that is entitled to a preference or
      priority over any other capital stock issued by such corporation upon any
      distribution of such corporation's assets, whether by dividend or upon
      liquidation.

            "Redeemable" means, with respect to any capital stock, Debt or other
      right or obligation, any such right or obligation that (a) the issuer has
      undertaken to redeem at a fixed or determinable date or dates, whether by
      operation of a sinking fund or otherwise, or upon the occurrence of a
      condition not solely within the control of the issuer or (b) is redeemable
      at the option of the holder.

            "Revenue Agent Report" means any report prepared by an agent of the
      Internal Revenue Service in connection with an audit of the Borrower
      recommending or otherwise setting forth positive adjustments to the
      Federal income tax liability of the Borrower.

            "S&P" means Standard & Poor's.

            "Security Agreement" has the meaning specified in Section 3.01(a)(v)
      hereof.

            "Single Employer Plan" of any Person means a single employer plan,
      as defined in Section 400(a)(15) of ERISA, that (a) is maintained for
      employees of such Person or any of its ERISA Affiliates and no Person
      other than such Person and its ERISA Affiliates or (b) was so maintained
      and in respect of which such Person or any of its
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                                                                               8

      ERISA Affiliates could have liability under Section 4069 of ERISA in the
      event such plan has been or were to be terminated.

            "Subsidiary" of any Person means any corporation, partnership, joint
      venture, limited liability company, trust or estate of which (or in which)
      more than 50% of (a) the issued and outstanding capital stock having
      ordinary voting power to elect a majority of the Board of Directors of
      such corporation (irrespective of whether at the time capital stock of any
      other class or classes of such corporation shall or might have voting
      power upon the occurrence of any contingency), (b) the interest in the
      capital or profits of such partnership, joint venture or limited liability
      company or (c) the beneficial interest in such trust or estate is at the
      time directly or indirectly owned or controlled by such Person, by such
      Person and one or more of its other Subsidiaries or by one or more of such
      Person's other Subsidiaries.

            "Taxes" has the meaning specified in Section 2.08(a) hereof.

            "Voting Stock" means capital stock issued by a corporation, or
      equivalent interests in any other Person, the holders of which are
      ordinarily, in the absence of contingencies, entitled to vote for the
      election of directors (or persons performing similar functions) of such
      Person, even though the right so to vote has been suspended by the
      happening of such a contingency.

            "Welfare Plan" means a welfare plan, as defined in Section 3(1) of
      ERISA.

            "Withdrawal Liability" has the meaning specified in Part I of
      Subtitle E of Title IV of ERISA.

            SECTION 1.02. Computation of Time Periods. In this Agreement in the
computation of periods of time from a specified date to a later specified date,
the word "from" means "from and including" and the words "to" and "until" each
means "to but excluding".

            SECTION 1.03. Accounting Terms. All accounting terms not
specifically defined herein shall be construed in accordance with generally
accepted accounting principles consistent with those applied in the preparation
of the financial statements referred to in Section 4.01(g) ("GAAP").
<PAGE>   12
                                                                               9

                                  ARTICLE II

                       AMOUNTS AND TERMS OF THE ADVANCE

            SECTION 2.01. The Advance. The Lender agrees, on the terms and
conditions hereinafter set forth, to make an Advance to the Borrower on the
Closing Date in the amount of the Commitment less $300,000, the emergency
advance made by the Lender to the Borrower on August 4, 2000, which emergency
advance shall henceforth be deemed an Advance hereunder secured by the
Collateral Documents.

            SECTION 2.02. Making the Advance. Subject to Section 2.01 and
satisfaction of the conditions set forth in Section 3.01, the Advance shall be
made on August 8, 2000, pursuant to a notice of borrowing (a "Notice of
Borrowing"). Such Notice of Borrowing shall be by fax, in substantially the form
of Exhibit B hereto, specifying therein the requested (i) date of such borrowing
and (ii) aggregate amount of such borrowing. Upon fulfillment of the applicable
conditions set forth in Article III, the Lender will make such funds available
to the Borrower by wire transfer to the Borrower's Account.

            SECTION 2.03. Repayment. The Borrower shall repay to the Lender the
outstanding principal amount of the Advance on the Maturity Date. When any of
the Obligations of the Borrower under the Loan Documents become due and payable
(by acceleration or otherwise), the Lender shall be entitled to immediate
payment of such Obligations.

            SECTION 2.04. Reduction and Termination of the Commitments. (a)
Optional. The Borrower may, upon at least one Business Day's notice to the
Lender, terminate in whole or reduce the unused portion of the Commitment;
provided, however, that each partial reduction shall be in an aggregate amount
of $2,000,000 or an integral multiple of $1,000,000 in excess thereof.

            (b) Mandatory. On the Maturity Date, the Commitment of the Lender
shall expire.

            SECTION 2.05. Optional Prepayments. The Borrower may, upon at least
two Business Days' notice to the Lender stating the proposed date and aggregate
principal amount of the prepayment, and if such notice is given the Borrower
shall, prepay the outstanding principal amount of the Advance in whole or
ratably in part, together with accrued interest to the date of such prepayment
on the principal amount prepaid, without premium or penalty; provided, however,
that each partial prepayment shall be in an aggregate principal amount of
$1,000,000 or an integral multiple of $100,000 in excess thereof.

            SECTION 2.06. Interest. (a) Ordinary Interest. The Borrower shall
pay interest on the unpaid principal amount of the Advance owing to the Lender
from the date of such Advance until such principal amount shall be paid in full,
at 17% per annum, payable in arrears on the Maturity Date.
<PAGE>   13
                                                                              10

            (b) Default Interest. Upon the occurrence and during the continuance
of a Default, interest shall accrue on the unpaid principal amount of the
Advance owing to the Lender and on the unpaid amount of all interest, fees and
other amounts payable hereunder that is not paid when due, at a rate per annum
equal to 19%, payable in arrears on the dates referred to in subsection (a)
above and on demand.

            SECTION 2.07. Payments and Computations. (a) The Borrower shall make
each payment hereunder and under the Note, if any, without setoff, deduction or
counterclaim, not later than 2:00 P.M. (New York City time) on the day when due
at the Lender's Account in U.S. dollars in same day funds.

            (b) All computations of interest and fees shall be made by the
Lender on the basis of a year of 360 days, in each case for the actual number of
days (including the first day but excluding the last day) occurring in the
period for which such interest, fees or commissions are payable. Each
determination by the Lender of an interest rate or fee hereunder shall be
conclusive and binding for all purposes, absent manifest error.

            (c) Whenever any payment hereunder or under the Note, if any, shall
be stated to be due on a day other than a Business Day, such payment shall be
made on the next succeeding Business Day, and such extension of time shall in
such case be included in the computation of payment of interest, as the case may
be.

            SECTION 2.08. Taxes. (a) Any and all payments by the Borrower
hereunder or under the Note, if any, shall be made, in accordance with Section
2.08, free and clear of and without deduction for any and all present or future
taxes, levies, imposts, deductions, charges or withholdings, and all liabilities
with respect thereto, excluding, net income taxes that are imposed by the United
States and franchise taxes and net income taxes that are imposed on the Lender
under the laws of the state which it is organized or any political subdivision
thereof and franchise taxes and net income taxes that are imposed on the Lender
by the state of its Lending Office or any political subdivision thereof (all
such non-excluded taxes, levies, imposts, deductions, charges, withholdings and
liabilities being hereinafter referred to as "Taxes"). If the Borrower shall be
required by law to deduct any Taxes from or in respect of any sum payable
hereunder or under the Note, if any, to the Lender, (i) the sum payable shall be
increased as may be necessary so that after making all required deductions
(including deductions applicable to additional sums payable under this Section
2.08), the Lender receives an amount equal to the sum it would have received had
no such deductions been made, (ii) the Borrower shall make such deductions and
(iii) the Borrower shall pay the full amount deducted to the relevant taxation
authority or other authority in accordance with applicable law.

            (b) In addition, the Borrower agrees to pay any present or future
stamp or documentary taxes or any other excise or property taxes, charges or
similar levies that arise from any payment made hereunder or under the Note, if
any, or from the execution, delivery or
<PAGE>   14
                                                                              11

registration of, or otherwise with respect to, this Agreement or the Note, if
any, (hereinafter referred to as "Other Taxes").

            (c) The Borrower will indemnify the Lender for the full amount of
Taxes or Other Taxes (including, without limitation, any Taxes or Other Taxes
imposed by any jurisdiction on amounts payable under this Section 2.08) paid by
the Lender and any liability (including penalties, additions to tax, interest
and expenses) arising therefrom or with respect thereto. This indemnification
shall be made within 10 days from the date the Lender makes written demand
therefor.

            (d) As soon as reasonably practicable after the date of any payment
of Taxes, the Borrower will furnish to the Lender, at its address referred to in
Section 7.02, appropriate evidence of payment thereof.

            (e) Without prejudice to the survival of any other agreement of the
Borrower hereunder, the agreements and obligations of the Borrower contained in
this Section 2.08 shall survive the payment in full of principal and interest
hereunder and under the Note, if any.

            SECTION 2.09. Use of Proceeds. The proceeds of the Advance shall be
available, and shall be used, solely for payroll, severance, employee benefits,
withholding taxes, rent, utilities and other obligations integral to the
Borrower's continuing operations and the expenses of preparing for a filing
under Chapter 11 of the Bankruptcy Code, and the payment of interest and fees
and expenses in respect hereof all in accordance with the Business Plan.

            SECTION 2.10. Evidence of Debt. The Lender shall maintain in
accordance with its usual practice an account or accounts evidencing the
indebtedness of the Borrower to the Lender resulting from the Advance owing to
the Lender from time to time, including the amounts of principal and interest
payable and paid to the Lender from time to time hereunder. The Borrower agrees
that upon notice by the Lender to the Borrower to the effect that a promissory
note or other evidence of indebtedness is required or appropriate in order for
the Lender to evidence (whether for purposes of pledge, enforcement or
otherwise) the Advance owing to, or to be made by, the Lender, the Borrower
shall promptly execute and deliver to the Lender a promissory note substantially
in the form of Exhibit A hereto (each a "Note"), payable to the order of the
Lender in a principal amount equal to the Commitment.

                                  ARTICLE III

                             CONDITIONS OF LENDING

            SECTION 3.01. Conditions Precedent to Borrowing. The obligation of
the Lender to make the Advance is subject to the following conditions precedent:
<PAGE>   15
                                                                              12

            (a) The Lender shall have received the following, each dated the
Closing Date (unless otherwise specified), in form and substance reasonably
satisfactory to the Lender:

                  (i) Evidence, reasonably satisfactory in form and substance to
            the Lender, of due authorization of the execution, delivery and
            performance by Borrower of its Obligations under this Agreement and
            each other Loan Document;

                  (ii) A certificate signed on behalf of the Borrower by its
            chief executive officer or chief financial officer, dated as of the
            Closing Date (the statements made in which certificate shall be true
            on and as of the Closing Date), certifying as to (A) a true and
            correct copy of the formation documents of the Borrower as in effect
            on the Closing Date, (B) the due formation and good standing of the
            Borrower as a limited partnership organized under the laws of the
            State of Delaware, and the absence of any proceeding for the
            dissolution or liquidation of the Borrower, (C) the truth in all
            material respects of the representations and warranties contained in
            the Loan Documents, as though made on and as of the date of the
            initial borrowing, before and after giving effect to such borrowing,
            and to the application of the proceeds therefrom, and (D) the
            absence of any event occurring and continuing, or resulting from the
            initial borrowing or from the application of the proceeds therefrom,
            that constitutes a Default or Event of Default;

                  (iii) (A) A certificate signed by a Secretary or an Assistant
            Secretary of the Borrower certifying the names and true signatures
            of the officers of the Borrower authorized to sign this Agreement,
            the Note (if any), each other Loan Document to which the Borrower is
            or may be a party and the other documents to be delivered hereunder
            and thereunder; and

            (B) a certificate signed by a Secretary or Assistant Secretary of
            the Borrower's general partner, and such general partner's managing
            partner, certifying the names and the signatures of the officers of
            the Borrower's general partner, and such general partner's managing
            partner, authorized to sign on behalf of the Borrower this
            Agreement, the Note (if any) and each other Loan Document to which
            the Borrower is or may be a party and the other documents to be
            delivered hereunder or thereunder;

                  (iv) If requested by the Lender, a Note to the order of the
            Lender in substantially the form of Exhibit A hereto;

                  (v) A security agreement in substantially the form of Exhibit
            C (as amended from time to time in accordance with its terms, the
            "Security Agreement"), duly executed by the Borrower;
<PAGE>   16
                                                                              13

                  (vi) The Lender shall have received the opinion of outside
            counsel to the Borrower, satisfactory in form and substance to the
            Lender, covering the matters set forth in paragraphs 4.01(a) through
            (f) hereof.

            (b) Lender shall have received the certificates representing the
      shares of Capital Stock pledged pursuant to the Collateral Documents,
      together with an undated stock power for each such certificate executed in
      blank by a duly authorized officer of the pledgor thereof.

            (c) Each document (including, without limitation, any Uniform
      Commercial Code financing statement and Patent and Trademark Office
      filing) required by the Collateral Documents or under law or reasonably
      requested by Lender to be filed, registered or recorded in order to create
      in favor of Lender, a perfected Lien on the Collateral described therein,
      prior and superior in right to any other Person (other than with respect
      to Liens expressly permitted by Section 5.02(a)) shall be in proper form
      for filing, registration or recordation in each jurisdiction in which the
      filing, registration or recordation thereof is so required or requested.

            (d) The Lender shall have received such other approvals, opinions or
      documents as the Lender may reasonably request.

                                  ARTICLE IV

                        REPRESENTATIONS AND WARRANTIES

            SECTION 4.01. Representations and Warranties of the Borrower. The
Borrower represents and warrants as follows:

            (a) It (i) is duly formed, validly existing and in good standing
      under the laws of the jurisdiction of its formation, (ii) is duly
      qualified and in good standing in each other jurisdiction in which it owns
      or leases property or in which the conduct of its business requires it to
      so qualify or be licensed except where the failure to so qualify or be
      licensed would not have a material adverse effect on its business,
      condition (financial or otherwise), operations, performance, properties or
      prospects and (iii) has all requisite power and authority to own or lease
      and operate its properties and to carry on its business as now conducted
      and as proposed to be conducted.

            (b) Set forth on Schedule 4.01(b) hereto is a complete and accurate
      list of all direct and indirect Subsidiaries of Borrower, showing as of
      the date hereof (as to each such Subsidiary) the jurisdiction of its
      organization or formation, the number of interests or shares of each class
      of Capital Stock authorized, and the number outstanding, on the date
      hereof and the percentage of the outstanding shares of each such class
      owned (directly or indirectly) by Borrower and the number of shares
      covered by all outstanding options, warrants, rights of conversion or
      purchase and similar rights at the date hereof.
<PAGE>   17
                                                                              14

      All of the outstanding Capital Stock of all of such Subsidiaries has been
      validly issued, is fully paid and non-assessable and is owned by Borrower
      or one or more of its Subsidiaries free and clear of all Liens, except
      those created by the Collateral Documents and any restrictions or
      encumbrances on transferability of securities imposed by applicable
      federal securities laws. Each such Subsidiary (i) is duly organized or
      formed, validly existing and in good standing under the laws of the
      jurisdiction of its organization or formation, (ii) is duly qualified and
      in good standing in each other jurisdiction in which it owns or leases
      property or in which the conduct of its business requires it to so qualify
      or be licensed except where the failure to so qualify or be licensed would
      not have a material adverse effect on its business, condition (financial
      or otherwise), operations, performance, properties or prospects and (iii)
      has all requisite power and authority to own or lease and operate its
      properties and to carry on its business as now conducted and as proposed
      to be conducted.

            (c) The execution, delivery and performance by each Borrower of this
      Agreement, the Note, if any, and each other Loan Document to which it is
      or is to be a party, and the other transactions contemplated hereby, are
      within Borrower's powers, have been duly authorized by all necessary
      partnership action, and do not (i) contravene Borrower's partnership
      agreement, (ii) violate any law (including, without limitation, the
      Securities Exchange Act of 1934 and the Racketeer Influenced and Corrupt
      Organizations Chapter of the Organized Crime Control Act of 1970), rule,
      regulation (including, without limitation, Regulation X of the Board of
      Governors of the Federal Reserve System), order, writ, judgment,
      injunction, decree, determination or award, (iii) conflict with or result
      in the breach of, or constitute a default under, any material contract,
      loan agreement, indenture, mortgage, deed of trust, lease or other
      instrument binding on or affecting Borrower, any of its Subsidiaries or
      any of their properties or (iv) result in or require the creation or
      imposition of any Lien (other than those created under the Collateral
      Documents) upon or with respect to any of the properties of Borrower or
      any of its Subsidiaries. Neither Borrower nor any of its Subsidiaries is
      in violation of any such law, rule, regulation, order, writ, judgment,
      injunction, decree, determination or award, the violation or breach of
      which is reasonably likely to have a material adverse effect on the
      business, condition (financial or otherwise), operations, performance,
      properties or prospects of Borrower or its Subsidiaries taken as a whole.

            (d) No authorization or approval or other action by, and no notice
      to or filing with, any governmental authority or regulatory body or any
      other third party is required for the due execution, delivery and
      performance by Borrower of this Agreement or any other Loan Document to
      which it is or is to be a party, or the other transactions contemplated
      hereby except (i) for authorizations, approvals, actions, notices or
      filings described in Schedule 4.01(d) hereto, which authorizations,
      approvals, actions, notices or filings have been obtained or made and are
      in full force and effect, (ii) for authorizations, approvals, actions,
      notices, or filings the failure of which to obtain or make and maintain in
      full force and effect could not reasonably be expected to have a material
      adverse effect
<PAGE>   18
                                                                              15

      on its business, condition (financial or otherwise), operations,
      performance, properties or prospects, and (iii) the filings referred to in
      Schedule 5 to the Security Agreement.

            (e) This Agreement has been, and each other Loan Document when
      delivered hereunder will have been, duly executed and delivered by
      Borrower. This Agreement is, and each other Loan Document when delivered
      hereunder will be the legal, valid and binding obligation of the Borrower,
      enforceable against Borrower in accordance with its terms except as
      enforceability may be limited by applicable bankruptcy, insolvency,
      reorganization, moratorium or similar laws affecting the enforcement of
      creditors' rights generally and by general equitable principles.

            (f) Upon execution and delivery thereof by the parties thereto, each
      of the Collateral Documents will be effective to create in favor of Lender
      a legal, valid and enforceable security interest in the collateral
      described therein. Uniform Commercial Code financing statements have been
      filed in each of the jurisdictions listed on Schedule 5 to the Security
      Agreement or arrangements have been made for such filing in such
      jurisdictions, and Patent and Trademark Office filings have been arranged
      by Lender, and upon such filing, and upon the taking of possession by
      Lender of the Pledged Securities referred to in any of the Collateral
      Documents and any other collateral the security interests in which may be
      perfected only by possession, such security interests will constitute
      first priority perfected liens on, and security interests in, all right,
      title and interest of the debtor party thereto in the collateral described
      therein, except as permitted by Section 5.02(a).

            (g) The Consolidated balance sheet of the Borrower and its
      Subsidiaries as at December 31, 1999, and the related Consolidated
      statement of income and cash flow of the Borrower and its Subsidiaries for
      the fiscal year then ended, accompanied by an opinion of Arthur Andersen,
      L.P., independent public accountants, and the unaudited Consolidated
      balance sheet of the Borrower and its Subsidiaries as at March 31, 2000,
      and the related Consolidated statement of income and cash flow of the
      Borrower and its Subsidiaries for the three months then ended, copies of
      which have been furnished to the Lender, fairly present the Consolidated
      results of the operations of the Borrower and its Subsidiaries for the
      periods ended on such dates, all in accordance with generally accepted
      accounting principles applied on a consistent basis.

            (h) No information, exhibit or report furnished to the Lender in
      connection with the negotiation of the Loan Documents or pursuant to the
      terms of the Loan Documents contained as of the date such information,
      exhibit or report was so furnished any untrue statement of a material fact
      or omitted to state a material fact necessary to make the statements made
      therein not misleading.

            (i) There is no action, suit, investigation, litigation or
      proceeding affecting, pending or, to the knowledge of the Borrower,
      threatened before any court, governmental agency or arbitrator that (i)
      could reasonably be expected to have a material adverse effect
<PAGE>   19
                                                                              16

      on the business, condition (financial or otherwise), operations,
      performance, properties or prospects of the Borrower and its Subsidiaries
      taken as a whole or (ii) purports to affect the legality, validity or
      enforceability of this Agreement, any other Loan Document or the
      consummation of the transactions contemplated hereby.

            (j) The Borrower is not engaged in the business of extending credit
      for the purpose of purchasing or carrying "margin stock" within the
      meaning of such quoted term under Regulation U of the Federal Reserve
      Board as now and from time to time hereafter in effect, and no proceeds of
      any Advance will be used to purchase or carry any margin stock or to
      extend credit to others for the purpose of purchasing or carrying any
      margin stock.

            (k) Except as set forth on Schedule 4.01(k), no ERISA Event has
      occurred or is reasonably expected to occur with respect to any Plan of
      the Borrower or any ERISA Affiliate.

            (l) Neither Borrower nor any of its ERISA Affiliates has incurred or
      is reasonably expected to incur any Withdrawal Liability to any
      Multiemployer Plan.

            (m) Neither Borrower nor any of its ERISA Affiliates has been
      notified by the sponsor of a Multiemployer Plan that such Multiemployer
      Plan is in reorganization or has been terminated, within the meaning of
      Title IV of ERISA, and no Multiemployer Plan to which Borrower or any
      ERISA Affiliate belongs is reasonably expected to be in reorganization or
      to be terminated, within the meaning of Title IV of ERISA.

            (n) Neither the business nor the properties of Borrower or any
      Subsidiary have been affected by any fire, explosion, accident, strike,
      lockout or other labor dispute, drought, storm, hail, earthquake, embargo,
      act of God or of the public enemy or other casualty (whether or not
      covered by insurance) that could reasonably be expected to have a material
      adverse effect on the business, condition (financial or otherwise),
      operations, performance, properties or prospects of Borrower and its
      Subsidiaries taken as a whole.

            (o) The operations and properties of Borrower and each of its
      Subsidiaries comply in all material respects with all Environmental Laws
      and neither utilize nor contain nor are affected by any Hazardous
      Materials that are not treated in material compliance with all
      Environmental Laws, and neither the Borrower nor any of its Subsidiaries
      has any material liability, contingent or otherwise, under any
      Environmental Law that could reasonably be expected to have a material
      adverse effect on the business, condition (financial or otherwise),
      operations, performance, properties or prospects of Borrower and its
      Subsidiaries taken as a whole.

            (p) Each of Borrower and its Subsidiaries has filed, has caused to
      be filed or has been included in all tax returns (Federal, state, local
      and foreign) required to be filed and has paid all taxes shown thereon to
      be due, together with applicable interest and
<PAGE>   20
                                                                              17

      penalties, (i) the amount of which, either individually or in the
      aggregate, could reasonably be expected to have a material adverse effect
      on the business, condition (financial or otherwise), operations,
      performance, properties or prospects of Borrower and its Subsidiaries
      taken as a whole or (ii) the amount, applicability or validity of which is
      being contested in good faith and by appropriate proceedings and with
      respect to which the Borrower or such Subsidiary, as the case may be, has
      established adequate reserves in accordance with generally accepted
      accounting principles. Neither the Borrower nor any of its Subsidiaries
      knows of any basis for any other tax, fee or charge that either
      individually or in the aggregate, could have a material adverse effect on
      the business, condition (financial or otherwise), operations, performance,
      properties or prospects of Borrower and its Subsidiaries taken as a whole.

            (q) Borrower is not an "investment company", or an "affiliated
      person" of, or "promoter" or "principal underwriter" for, an "investment
      company", as such terms are defined in the Investment Company Act of 1940,
      as amended. Neither the making of the Advance nor the application of the
      proceeds or repayment thereof by the Borrower, nor the consummation of the
      other transactions contemplated hereby, will violate any provision of such
      Act or any rule, regulation or order of the Securities and Exchange
      Commission thereunder.

            (r) Set forth on Schedule 4.01(r) hereto is a complete and accurate
      list of all material patents, trademarks, trade names, service marks and
      copyrights, and all applications therefor and licenses thereof, owned by
      Borrower and each of its Subsidiaries, showing as of the date hereof the
      jurisdiction in which registered, the registration number, the date of
      registration and the expiration date.

            (s) There are no Liens (including liens or titles retained by
      conditional vendors) of any nature whatsoever on any properties of the
      Borrower or any of its Subsidiaries other than (i) Permitted Liens, (ii)
      Liens created pursuant to the Loan Documents and (iii) the Liens set forth
      on Schedule 4.01(s) hereto. The Liens granted by the Borrower to the
      Lender pursuant to the Security Agreement are duly perfected Liens on the
      Collateral. Except as disclosed on Schedule 4.01(s), neither Borrower nor
      any of its Subsidiaries is a party to any contract, agreement, lease or
      instrument the performance of which, either unconditionally or upon the
      happening of an event, will result in or require the creation of a Lien on
      its property or assets, other than Permitted Liens, or otherwise result in
      a violation of this Agreement.

            (t) All material contracts of the Borrower and each of its
      Subsidiaries (i) are listed in filings made with the Securities and
      Exchange Commission ("Material Contracts") and (ii) to the extent not
      listed in any such filings, are listed on Schedule 1 to the Security
      Agreement.

            (u) The Borrower and its Subsidiaries possess all patents,
      copyrights, trademarks, trade names, service marks, licenses, permits,
      authorizations and rights
<PAGE>   21
                                                                              18

      thereto, in respect of the foregoing, all of which are shown on Schedule
      4.01(r) hereto. The patents, copyrights, trademarks, trade names, service
      marks, licenses, permits, authorizations and rights thereto set forth on
      Schedule 4.01(r) are, in the Borrower's reasonable business judgment,
      adequate for the conduct of its business as now conducted and, except for
      any other necessary authorizations and approvals from applicable
      governmental authorities, as planned to be conducted in the future,
      without known conflict with any rights of others that could reasonably be
      expected to have a material adverse effect on the business, condition
      (financial or otherwise), operations, performance, properties or prospects
      of Borrower and its Subsidiaries taken as a whole.

            (v) Borrower has been represented by independent counsel and has
      entered into this Agreement without any undue influence or duress of
      Lender, and all other Persons having an ownership interest in the Borrower
      have, or their duly authorized representatives, been notified of, and
      consented to, the Borrower's entry into this Agreement.

                                    ARTICLE V

                            COVENANTS OF THE BORROWER

            SECTION 5.01. Affirmative Covenants. So long as the Advance shall
remain unpaid or the Lender shall have any Commitment hereunder, the Borrower
will, and will cause each of its Subsidiaries to, unless the Lender shall
otherwise consent in writing:

            (a) Compliance with Laws, Etc. Comply, in all material respects,
      with all applicable laws, rules, regulations and orders, such compliance
      to include, without limitation, compliance with ERISA, all applicable
      Environmental Laws and the Racketeer Influenced and Corrupt Organizations
      Chapter of the Organized Crime Control Act of 1970.

            (b) Payment of Taxes, Etc. Pay and discharge, before the same shall
      become delinquent, (i) all taxes, assessments and governmental charges or
      levies imposed upon it or upon its property and (ii) all lawful claims
      that, if unpaid, might by law become a Lien upon its property; provided,
      however, that neither the Borrower nor any of its Subsidiaries shall be
      required to pay or discharge any such tax, assessment, charge or claim
      that is being contested in good faith and by proper proceedings and as to
      which appropriate reserves are being maintained.

            (c) Maintenance of Insurance. Maintain insurance with responsible
      and reputable insurance companies or associations in such amounts and
      covering such risks as is usually carried by companies engaged in similar
      businesses and owning similar properties in the same general areas in
      which the Borrower or such Subsidiary operates.
<PAGE>   22
                                                                              19

            (d) Preservation of Existence, Etc. Preserve and maintain its
      corporate or partnership status, rights (charter and statutory) and
      franchises, except as may otherwise be permitted under Section 5.02(d).

            (e) Visitation Rights. At any reasonable time and from time to time,
      permit the Lender or any agents or representatives thereof, to examine and
      make copies of and abstracts from the records and books of account of, and
      visit the properties of, the Borrower and its Subsidiaries, and to discuss
      the affairs, finances and accounts of the Borrower and its Subsidiaries
      with any of their officers or directors and with their independent
      certified public accountants.

            (f) Keeping of Books. Keep proper books of record and account, in
      which full and correct entries shall be made of all financial transactions
      and their respective assets and business in accordance with GAAP.

            (g) Maintenance of Properties, Etc. Maintain and preserve all of its
      properties that are used or useful in the conduct of its business in good
      working order and condition, ordinary wear and tear excepted, except as
      may otherwise be permitted under Section 5.02(e).

            (h) Transactions with Affiliates. Conduct all transactions otherwise
      permitted under the Loan Documents with any of their Affiliates on terms
      that are no less favorable to the Borrower or such Subsidiary than it
      would obtain in a comparable arm's-length transaction with a Person not an
      Affiliate.

            (i)   Reporting Requirements.  Furnish to the Lender:

                  (i) promptly and in any event within five Business Days after
            Borrower or any of its ERISA Affiliates knows or has reason to know
            that any ERISA Event has occurred, a statement of the chief
            executive officer or chief financial officer of the Borrower
            describing such ERISA Event and the action, if any, that Borrower or
            such ERISA Affiliate has taken and proposes to take with respect
            thereto;

                  (ii) promptly and in any event within five Business Days after
            receipt thereof by Borrower or any of its ERISA Affiliates, copies
            of each notice from the PBGC stating its intention to terminate any
            Plan or to have a trustee appointed to administer any Plan;

                  (iii) promptly and in any event within 30 days after the
            filing thereof with the Internal Revenue Service, copies of each
            Schedule B (Actuarial Information) to the annual report (Form 5500
            Series) with respect to each Plan of each Borrower;
<PAGE>   23
                                                                              20

                  (iv) promptly and in any event within five Business Days after
            receipt thereof by Borrower or any of its ERISA Affiliates from the
            sponsor of a Multiemployer Plan, copies of each notice received by
            Borrower or any of its ERISA Affiliates concerning (A) the
            imposition of Withdrawal Liability by any Multiemployer Plan, (B)
            the reorganization or termination, within the meaning of Title IV of
            ERISA, of any Multiemployer Plan or (C) the amount of liability
            incurred, or that may be incurred, by Borrower or any of its ERISA
            Affiliates in connection with any event described in clause (A) or
            (B);

                  (v) promptly after the commencement thereof, notice of all
            actions, suits and proceedings before any court or governmental
            department, commission, board, bureau, agency or instrumentality,
            domestic or foreign, affecting Borrower or any Subsidiary of the
            type described in Section 4.01(i);

                  (vi) promptly after the sending or filing thereof, copies of
            all proxy statements, financial statements and reports that Borrower
            or any Subsidiary sends to any holders of its debt or equity
            securities, and copies of all regular, periodic and special reports,
            and all registration statements, that Borrower files with the
            Securities and Exchange Commission or any governmental authority
            that may be substituted therefor, or with any national securities
            exchange;

                  (vii) promptly after the furnishing thereof, copies of any
            statement or report furnished to any other holder of the securities
            of Borrower pursuant to the terms of any indenture, loan or credit
            or similar agreement and not otherwise required to be furnished to
            the Lender pursuant to any other clause of this Section 5.01(i);

                  (viii) promptly upon receipt thereof, copies of all material
            notices, requests and other documents received by Borrower or any
            Subsidiary under or pursuant to any document prepared or produced in
            connection with any Material Contract;

                  (ix) within five Business Days after receipt, copies of all
            Revenue Agent Reports (Internal Revenue Service Form 886), or other
            written proposals of the Internal Revenue Service, that propose,
            determine or otherwise set forth positive adjustments to the Federal
            income tax liability of the affiliated group (within the meaning of
            Section 1504(a)(1) of the Internal Revenue Code) of which the
            Borrower is a member;

                  (x) such other information respecting the business, condition
            (financial or otherwise), operations, performance, properties or
            prospects of Borrower and its Subsidiaries as the Lender may from
            time to time reasonably request;
<PAGE>   24
                                                                              21

                  (xi) within 10 days after the Closing Date, evidence of
            insurance naming the Lender as insured and loss payee with such
            responsible and reputable insurance companies or associations, and
            in such amounts and covering such risks, as is reasonably
            satisfactory to the Lender.

            (j) The Business Plan. The Borrower shall comply, and cause its
      Subsidiaries to comply, in all material respects with the Business Plan.
      The Borrower shall not change, amend or otherwise modify the Business Plan
      without the prior written consent of the Lender.

            SECTION 5.02. Negative Covenants. So long as the Advance shall
remain unpaid or any Lender shall have any Commitment hereunder, the Borrower
will not, and will not permit any of its Subsidiaries to, without the written
consent of the Lender:

            (a) Liens, Etc. Create, incur, assume or suffer to exist any Lien on
      or with respect to any of its properties of any character (including,
      without limitation, accounts) whether now owned or hereafter acquired, or
      assign, any accounts or other right to receive income, excluding, however,
      from the operation of the foregoing restrictions the following:

                  (i)   Permitted Liens;

                  (ii)  Liens set forth on Schedule 4.01(u);

                  (iii) the replacement, extension or renewal of any Permitted
            Lien or Lien set forth on Schedule 4.01(u) upon or in the same
            property theretofore subject thereto or the replacement, extension
            or renewal (without increase in the principal amount) of the Debt
            secured thereby;

                  (iv) deposits to secure the performance of bids, trade
            contracts (other than for borrowed money), leases, statutory
            obligations, surety and appeal bonds, performance bonds and other
            obligations of a like nature incurred in the ordinary course of
            business.

                  (v)   Liens created by the Collateral Documents;

                  (vi) any interest or title of a lessor under any lease entered
            into by Borrower or any of its Subsidiaries in the ordinary course
            of business and covering only the assets so leased; and

                  (vii) judgment Liens not giving rise to an Event of Default.

            (b) Debt. Create, incur, assume or suffer to exist any Debt other
      than:
<PAGE>   25
                                                                              22

                  (i) in the case of the Borrower, Debt under the Loan
            Documents;

                  (ii) in the case of any of its Subsidiaries, Debt owed to the
            Borrower or to a Subsidiary of the Borrower;

                  (iii) in the case of the Borrower, indorsement of negotiable
            instruments for deposit or collection or similar transactions in the
            ordinary course of business; and

                  (iv) Debt existing on the date hereof and any trade payables
            that become overdue by more than 90 days after the date hereof and
            any refinancings, refundings, renewals or extension thereof (without
            any increase in the principal amount thereof or any shortening of
            the maturity of any principal amount thereof).

            (c) Lease Obligations. Create, incur, assume or suffer to exist any
      obligations as lessee (i) for the rental or hire of real or personal
      property in connection with any sale and leaseback transaction, or (ii)
      for the rental or hire of other real or personal property of any kind
      under leases or agreements to lease including Capitalized Leases having an
      original term of one year or more.

            (d) Mergers, Etc. Merge with or into or consolidate with or into any
      Person, except that any Subsidiary of the Borrower may merge or
      consolidate with or into, any other Subsidiary of the Borrower, and any of
      the Borrower's Subsidiaries may merge or consolidate with or into the
      Borrower; provided, however, that in each case, immediately after giving
      effect thereto, no event shall occur and be continuing that constitutes a
      Default and in the case of any such merger to which the Borrower is a
      party, the Borrower is the surviving corporation.

            (e) Sales, Etc. of Assets. Sell, lease, transfer or otherwise
      dispose of any of its assets except:

                  (i) sales of obsolete or worn out assets or equipment no
            longer necessary to the operation of the Borrower's or such
            Subsidiary's business or assets deemed in the reasonable business
            judgment of the Borrower to be unnecessary to the conduct of its or
            its Subsidiaries' business, the value of which shall not exceed
            $50,000;

                  (ii) in connection with a transaction authorized by subsection
            (d) of this Section; and

                  (iii) the sale of inventory in the ordinary course of
            business.

            (f) Investments in Other Persons. Make or hold (other than
      Investments held as of the date hereof) any Investment in any Person,
      except for Investments provided for
<PAGE>   26
                                                                              23

      in the Business Plan, and Investments otherwise approved in writing by the
      Lender and as follows:

                  (i) extensions of trade credit in the ordinary course of
            business;

                  (ii)  investments in Cash Equivalents;

                  (iii) loans and advances to employees of the Borrower or any
            Subsidiaries of the Borrower in the ordinary course of business
            (including, without limitation, for travel, entertainment and
            relocation expenses, but excluding commitments to pay relocation
            expenses in an amount not to exceed $121,000) in an aggregate amount
            for the Borrower and its Subsidiaries not to exceed $50,000 at any
            one time outstanding; and

                  (iv) investments in assets useful in the Borrower's business
            made by the Borrower or any of its Subsidiaries that are permitted
            hereunder.

            (g) Dividends, Etc. Declare or pay any dividends, purchase, redeem,
      retire, defease or otherwise acquire for value any of its capital stock or
      any warrants, rights or options to acquire such capital stock, now or
      hereafter outstanding, return any capital to its stockholders as such,
      make any distribution of assets, capital stock, warrants, rights, options,
      obligations or securities to its stockholders as such or issue or sell any
      capital stock or any warrants, rights or options to acquire such capital
      stock.

            (h) Capital Expenditures. Make any Capital Expenditures except as
      provided for in the Business Plan or otherwise approved in writing by the
      Lender.

            (i) Accounting Changes. Make or permit any change in accounting
      policies or reporting practices, except as required by GAAP.

                                  ARTICLE VI

                               EVENTS OF DEFAULT

            SECTION 6.01. Events of Default. If any of the following events
("Events of Default") shall occur and be continuing:

            (a) the Borrower shall fail to pay any principal of, or interest on,
      the Advance, or shall fail to make any other payment under any Loan
      Document, in each case when the same becomes due and payable; or

            (b) any representation or warranty under or in connection with any
      Loan Document shall prove to have been incorrect in any material respect
      when made; or
<PAGE>   27
                                                                              24

            (c) the Borrower shall fail to perform or observe (i) any term,
      covenant or agreement contained in Sections 5.01(d), 5.01(j) or 5.02 or
      (ii) any other term, covenant or agreement contained in any Loan Document
      on its part to be performed or observed if such failure shall remain
      unremedied for 10 days after written notice thereof shall have been given
      to the Borrower by the Lender; or

            (d) any judgment or order for the payment of money in excess of
      $10,000,000 shall be rendered against Borrower or any of its Subsidiaries
      (which is not fully covered or paid by insurance) and either (i)
      enforcement proceedings shall have been commenced by any creditor upon
      such judgment or order or (ii) there shall be any period of 10 consecutive
      days during which a stay of enforcement of such judgment or order, by
      reason of a pending appeal or otherwise, shall not be in effect; or

            (e) any non-monetary judgment or order shall be rendered against
      Borrower or any of its Subsidiaries that could have a material adverse
      effect on (i) the business, condition (financial or otherwise),
      operations, performance, properties or prospects of Borrower and its
      Subsidiaries taken as a whole, (ii) the ability of Borrower to perform its
      obligations under any Loan Document to which it is a party or (iii) the
      rights and remedies of the Lender under any Loan Document, and there shall
      be any period of 10 consecutive days during which a stay of enforcement of
      such judgment or order, by reason of a pending appeal or otherwise, shall
      not be in effect; or

            (f) any provision of any Loan Document shall for any reason cease to
      be valid and binding on or enforceable against Borrower, or Borrower shall
      so state in writing; or the Borrower shall commence or join in any legal
      proceeding to contest in any manner that the Loan Documents constitute
      valid and enforceable agreements or Borrower shall commence or join in any
      legal proceeding to assert in any manner that it has no further obligation
      or liability under the Loan Documents; or

            (g) any Collateral Document shall for any reason (other than
      pursuant to the terms thereof) cease to create a valid and perfected first
      priority Lien on the Collateral purported to be covered thereby; or

            (h) (i) Borrower shall commence any case, proceeding or other action
      (A) under any existing or future law of any jurisdiction, domestic or
      foreign, relating to bankruptcy, insolvency, reorganization or relief of
      debtors, seeking to have an order for relief entered with respect to it,
      or seeking to adjudicate it a bankrupt or insolvent, or seeking
      reorganization, arrangement, adjustment, winding-up, liquidation,
      dissolution, composition or other relief with respect to it or its debts,
      or (B) seeking appointment of a receiver, trustee, custodian, conservator
      or other similar official for it or for all or any substantial part of its
      assets, or shall make a general assignment for the benefit of its
      creditors; or (ii) there shall be commenced against Borrower any case,
      proceeding or other action of a nature referred to in clause (i) above
      which (A) results in the entry of an order for relief or any such
      adjudication or appointment or (B) remains undismissed,
<PAGE>   28
                                                                              25

      undischarged or unbonded for a period of 60 days; or (iii) there shall be
      commenced against Borrower any case, proceeding or other action seeking
      issuance of a warrant of attachment, execution, distraint or similar
      process against all or any substantial part of its assets which results in
      the entry of an order for any such relief which shall not have been
      vacated, discharged, or stayed or bonded pending appeal within 60 days
      from the entry thereof; or (iv) Borrower shall take any action in
      furtherance of, or indicating its consent to, approval of, or acquiescence
      in, any of the acts set forth in clause (i), (ii) or (iii) above; or

            (i) any ERISA Event shall have occurred with respect to a Plan of
      the Borrower or any ERISA Affiliate and the sum (determined as of the date
      of occurrence of such ERISA Event) of the Insufficiency of such Plan and
      the Insufficiency of any and all other Plans of the Borrower or any ERISA
      Affiliate with respect to which an ERISA Event shall have occurred and
      then exist (or the liability of the Borrower and its ERISA Affiliates
      related to such ERISA Event) exceeds $1,000,000; or

            (j) the Borrower or any ERISA Affiliate of the Borrower shall have
      been notified by the sponsor of a Multiemployer Plan that it has incurred
      Withdrawal Liability to such Multiemployer Plan in an amount that, when
      aggregated with all other amounts required to be paid to Multiemployer
      Plans by the Borrower or any ERISA Affiliate as Withdrawal Liability
      (determined as of the date of such notification), exceeds $1,000,000 or
      requires payments exceeding $1,000,000 per annum; or

            (k) the Borrower or any ERISA Affiliate shall have been notified by
      the sponsor of a Multiemployer Plan that such Multiemployer Plan is in
      reorganization or is being terminated, within the meaning of Title IV of
      ERISA, and as a result of such reorganization or termination the aggregate
      annual contributions of the Borrower and its ERISA Affiliates to all
      Multiemployer Plans that are then in reorganization or being terminated
      have been or will be increased over the amounts contributed to such
      Multiemployer Plans for the plan years of such Multiemployer Plans
      immediately preceding the plan year in which such reorganization or
      termination occurs by an amount exceeding $1,000,000; or

            (l) the Federal Communications Commission or any other governmental
      authority shall have canceled any material license issued by the Federal
      Communications Commission to Orbital Communications Corporation with
      respect to the operation of the Borrower's low Earth orbit satellite
      system or failed to renew any such license; or

            (m) the Federal Communications Commission or any other governmental
      authority shall have commenced any proceeding to cancel, revoke or suspend
      any material license issued to Orbital Communications Corporation with
      respect to the operation of the Borrower's low Earth orbit satellite
      system, which proceeding for the cancellation, revocation or suspension
      could reasonably be expected to have a material adverse effect on the
      business, condition (financial or otherwise), operations,
<PAGE>   29
                                                                              26

      performance, properties or prospects of the Borrower and its Subsidiaries
      taken as a whole;

then, and in any such event, (A) if such event is an Event of Default specified
in clause (i) or (ii) of paragraph (h) above with respect to the Borrower,
automatically the Commitment shall immediately terminate and the Advances (with
accrued interest thereon) and all other amounts owing under this Agreement and
the other Loan Documents shall immediately become due and payable, and (B) if
such event is any other Event of Default, either or both of the following
actions may be taken: (i) the Lender may by written notice to the Borrower (i)
declare the Commitment to be terminated, whereupon the same shall forthwith
terminate, (ii) declare the Note, if any, the Advances and all interest thereon
and all other amounts payable under this Agreement and the other Loan Documents
to be forthwith due and payable, whereupon the Note, if any, the Advances and
all such interest and all such amounts shall become and be forthwith due and
payable, without presentment, demand, protest or further notice of any kind, all
of which are hereby expressly waived by the Borrower, and (iii) exercise any and
all rights and remedies under this Agreement and the other Loan Documents
available to the Lender and all other rights and remedies provided under the
Uniform Commercial Code of the applicable jurisdiction and other applicable
laws, which rights and remedies shall be cumulative.

                                  ARTICLE VII

                                 MISCELLANEOUS

            SECTION 7.01. Amendments, Etc. No amendment or waiver of any
provision of this Agreement, nor consent to any departure by the Borrower
therefrom, shall in any event be effective unless the same shall be in writing
and signed by the Lender, and then such waiver or consent shall be effective
only in the specific instance and for the specific purpose for which given.

            SECTION 7.02. Notices, Etc. All notices and other communications
provided for hereunder shall be in writing (including fax communication) and
mailed, faxed or otherwise delivered, if to the Borrower, at its address at
21819 Atlantic Boulevard, Dulles, Virginia, 20166, fax number: (703) 433-6933,
Attention: Mary Ellen Seravalli, Esq., Senior Vice President and General
Counsel, with a copy to Latham & Watkins, 885 Third Avenue, New York, New York,
10022-4802, fax number: (202) 906-1200, Attention: Martin Flics, Esq.; if to the
Lender, at its address at c/o Teleglobe Communications Corp., 1000 de La
Gauchetiere West 23rd Floor, Montreal, Quebec, Canada, H3B4X5, fax number: (514)
868-7438, Attention: Andre Bourbonnais, Esq., with a copy to Simpson Thacher &
Bartlett, 425 Lexington Avenue, New York, New York, 10017, fax number: (212)
455-2502, Attention: Mark Thompson, Esq.; or, as to each party, at such other
address as shall be designated by such party in a written notice to the other
parties. All such notices and communications shall, when mailed or faxed, be
effective when deposited in the mails or transmitted by fax, respectively,
except that notices and communications to the Lender pursuant to Article II
shall not be effective until received by the Lender.
<PAGE>   30
                                                                              27

            SECTION 7.03. No Waiver; Remedies. No failure on the part of the
Lender to exercise, and no delay in exercising, any right hereunder shall
operate as a waiver thereof; nor shall any single or partial exercise of any
such right preclude any other or further exercise thereof or the exercise of any
other right. The remedies herein provided are cumulative and not exclusive of
any remedies provided by law.

            SECTION 7.04. Indemnity. The Borrower agrees to indemnify and hold
harmless the Lender and each of its Affiliates and their officers, directors,
employees, agents and advisors (each, an "Indemnified Party") from and against
any and all claims, damages, losses, liabilities and expenses (including,
without limitation, reasonable fees and expenses of counsel) that may be
incurred by or asserted or awarded against any Indemnified Party, in each case
arising out of or in connection with or by reason of, or in connection with the
preparation for a defense of, any investigation, litigation or proceeding
arising out of, related to or in connection with the transactions contemplated
hereby, whether or not an Indemnified Party is a party thereto and whether or
not the transactions contemplated hereby are consummated, except to the extent
such claim, damage, loss, liability or expense is found in a final,
non-appealable judgment by a court of competent jurisdiction to have resulted
from such Indemnified Party's gross negligence or willful misconduct.

            SECTION 7.05. Right of Set-off. Upon the occurrence and during the
continuance of any Event of Default, the Lender is hereby authorized at any time
and from time to time, to the fullest extent permitted by law, to set off and
apply any indebtedness at any time owing by the Lender to or for the credit or
the account of the Borrower against any and all of the Obligations of the
Borrower now or hereafter existing under this Agreement and any Note,
irrespective of whether the Lender shall have made any demand under this
Agreement or such Note and although such obligations may be unmatured. The
Lender agrees promptly to notify the Borrower after any such set-off and
application made by the Lender; provided, however, that the failure to give such
notice shall not affect the validity of such set-off and application. The rights
of the Lender under this Section are in addition to other rights and remedies
(including, without limitation, other rights of set-off) that the Lender may
have.

            SECTION 7.06. Integration. Except for the Memorandum of
Understanding, dated as of August 3, 2000, among Teleglobe, Inc., the Borrower,
Orbital Communications Corporation, Orbital Sciences Corporation and Teleglobe
Mobile Partners, this Agreement and the other Loan Documents represent the
entire agreement of the Borrower and the Lender with respect to the subject
matter hereof, and there are no promises, undertakings, representations or
warranties by the Lender relative to the subject matter hereof not expressly set
forth herein or in the other Loan Documents.

            SECTION 7.07. Binding Effect. This Agreement shall become effective
upon the execution hereof by all of the parties hereto and thereafter shall be
binding upon and inure to the benefit of each such party and their respective
successors and assigns, except that the Borrower
<PAGE>   31
                                                                              28

shall not have the right to assign its rights hereunder or any interest herein
without the prior written consent of the Lender.

            SECTION 7.08. GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY,
AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

            SECTION 7.09. Execution in Counterparts. This Agreement may be
executed in any number of counterparts and by different parties hereto in
separate counterparts, each of which when so executed shall be deemed to be an
original and all of which taken together shall constitute one and the same
agreement. Delivery of an executed counterpart of a signature page to this
Agreement by fax shall be effective as delivery of an original executed
counterpart of this Agreement.

            SECTION 7.10. WAIVER OF JURY TRIAL. THE BORROWER AND THE LENDER
HEREBY IRREVOCABLY WAIVE ALL RIGHT TO TRIAL BY JURY IN ANY ACTION, PROCEEDING OR
COUNTERCLAIM (WHETHER BASED ON CONTRACT, TORT OR OTHERWISE) ARISING OUT OF OR
RELATING TO ANY OF THE LOAN DOCUMENTS, THE ADVANCES OR THE ACTIONS OF THE LENDER
IN THE NEGOTIATION, ADMINISTRATION, PERFORMANCE OR ENFORCEMENT THEREOF.
<PAGE>   32
                                                                              29

            IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be executed by their respective officers thereunto duly authorized, as of the
date first above written.

                                          ORBCOMM GLOBAL, L.P., as Borrower

                                          By_________________________________
                                          Name:  Scott L. Webster
                                          Title:  Chief Executive Officer

                                          By:  Teleglobe Mobile Partners
                                          Its General Partner

                                          By:  Teleglobe Mobile Investment, Inc.
                                          Its Managing Partner

                                          By_________________________________
                                          Name:  Andre Bourbonnais
                                          Title:

                                          TELEGLOBE HOLDING CORP., as Lender

                                          By_________________________________
                                          Name:
                                          Title:<PAGE>   1
                                                               EXECUTION VERSION

                               SECURITY AGREEMENT

                  SECURITY AGREEMENT, dated as of August 8, 2000, made by
ORBCOMM GLOBAL, L.P. , a Delaware limited partnership (the "Borrower"), in favor
of TELEGLOBE HOLDING CORP., a Delaware corporation (the "Lender") pursuant to
the Bridge Credit Agreement, dated as of August 8, 2000 (as amended,
supplemented or otherwise modified from time to time, the "Credit Agreement"),
between the Borrower and the Lender.

                              W I T N E S S E T H:

                  WHEREAS, pursuant to the Credit Agreement, the Lender has
agreed to make an Advance to the Borrower upon the terms and subject to the
conditions set forth therein; and

                  WHEREAS, it is a condition precedent to the obligation of the
Lender to make such Advance to the Borrower under the Credit Agreement that the
Borrower shall have executed and delivered this Security Agreement to the
Lender.

                  NOW, THEREFORE, in consideration of the premises and to induce
the Lender to enter into the Credit Agreement and to induce the Lender to make
the Advance to the Borrower, the Borrower hereby agrees with the Lender as
follows:

                  1.  Defined Terms.

                  1.1 Definitions. (a) Unless otherwise defined herein, terms
defined in the Credit Agreement and used herein shall have the meanings given to
them in the Credit Agreement, and the following terms which are defined in the
Uniform Commercial Code in effect in the State of New York on the date hereof
are used herein as so defined: Accounts, Chattel Paper, Documents, Equipment,
Farm Products, General Intangibles, Goods, Instruments, Inventory and Investment
Property.

         (b) The following terms shall have the following meanings:

                  "Agreement": this Security Agreement, as the same may be
         amended, supplemented or otherwise modified from time to time.

                  "Code": the Uniform Commercial Code as from time to time in
         effect in the State of New York.

                  "Collateral":  as defined in Section 2.
<PAGE>   2
                                                                               2

                  "Collateral Account": any collateral account established by
         the Lender as provided in Section 5.3 or Section 9.2.

                  "Contracts": the material contracts and agreements to which
         the Borrower is party that are material to the conduct of the
         Borrower's business and operations, as listed in Schedule 1, as the
         same may be amended, supplemented or otherwise modified from time to
         time, including, without limitation, (a) all rights of the Borrower to
         receive moneys due and to become due to it thereunder or in connection
         therewith, (b) all rights of the Borrower to damages arising out of or
         for breach or default in respect thereof and (c) all rights of the
         Borrower to exercise all remedies thereunder.

                  "Copyrights": (i) all material copyrights arising under the
         laws of the United States, any other country or any political
         subdivision thereof, whether registered or unregistered and whether
         published or unpublished (including, without limitation, those listed
         in Schedule 4), all registrations and recordings thereof, and all
         applications in connection therewith, including, without limitation,
         all registrations, recordings and applications in the United States
         Copyright Office, and (ii) the right to obtain all renewals thereof.

                  "Copyright Licenses": any material written agreement naming
         the Borrower as licensor or licensee (including, without limitation,
         those listed in Schedule 4), granting any right under any Copyright,
         including, without limitation, the grant of rights to manufacture,
         distribute, exploit and sell materials derived from any Copyright, to
         the extent, in each case where the Borrower is a licensee under any
         such written agreement, the grant by the Borrower of a security
         interest pursuant to this Agreement is not prohibited by such written
         agreement.

                  "FCC":  the Federal Communications Commission.

                  "FCC License": any license, permit, consent, certificate of
         compliance, franchise, approval, waiver or authorization granted or
         issued by the FCC, including, without limitation, any of the foregoing
         authorizing or permitting the acquisition, construction, launch or
         operation of a commercial non-voice, non-geosynchronous, satellite or
         "little LEO (low earth orbit)" system.

                  "Foreign Subsidiary": any Subsidiary of the Borrower organized
         under the laws of any jurisdiction outside the United States of
         America.

                  "Governmental Authority": any nation or government, any state
         or other political subdivision thereof and any entity exercising
         executive, legislative, judicial, regulatory or administrative
         functions of or pertaining to government (including, without
         limitation, the National Association of Insurance Commissioners).

                  "Intellectual Property": the collective reference to all
         rights, priorities and privileges relating to intellectual property,
         whether arising under United States, multinational or foreign laws or
         otherwise, including, without limitation, the Copyrights, the Copyright
         Licenses, the Patents, the Patent Licenses, the Trademarks and the
<PAGE>   3
                                                                               3

         Trademark Licenses, and all rights to sue at law or in equity for any
         infringement or other impairment thereof, including the right to
         receive all proceeds and damages therefrom.

                  "Issuer": any Person identified on Schedule 7 attached hereto
         as an issuer of Pledged Stock.

                  "Obligations": the collective reference to the unpaid
         principal of and interest on the Advances and all other obligations and
         liabilities of the Borrower to the Lender (including, without
         limitation, interest accruing at the then applicable rate provided in
         the Credit Agreement after the maturity of the Advances and interest
         accruing at the then applicable rate provided in the Credit Agreement
         after the filing of any petition in bankruptcy, or the commencement of
         any insolvency, reorganization or like proceeding, relating to the
         Borrower, whether or not a claim for post-filing or post-petition
         interest is allowed in such proceeding), whether direct or indirect,
         absolute or contingent, due or to become due, or now existing or
         hereafter incurred, which may arise under, out of, or in connection
         with, the Credit Agreement, this Agreement, the other Loan Documents
         entered into by the Borrower with any Lender or any other document
         made, delivered or given in connection therewith, in each case whether
         on account of principal, interest, reimbursement obligations, fees,
         indemnities, costs, expenses or otherwise.

                  "Patents": (a) all material letters patent of the United
         States or any other country and all reissues and extensions thereof,
         including, without limitation, any thereof referred to in Schedule 2,
         and (b) all applications for material letters patent of the United
         States or any other country and all divisions, continuations and
         continuations-in-part thereof, including, without limitation, any
         thereof referred to in Schedule 2.

                  "Patent License": all material agreements, whether written or
         oral, providing for the grant by or to the Borrower of any right to
         manufacture, use or sell any invention covered by a Patent, including,
         without limitation, any thereof referred to in Schedule 2.

                  "Pledged Notes": all promissory notes listed on Schedule 7,
         all notes at any time issued to the Borrower by any Subsidiary and all
         other promissory notes issued to or held by the Borrower or any
         Investment Property.

                  "Pledged Securities": the collective reference to the Pledged
         Notes and the Pledged Stock.

                  "Pledged Stock": the shares of Capital Stock of the
         Subsidiaries directly owned by the Borrower listed on Schedule 7,
         together with any other shares, stock certificates, options or rights
         of any nature whatsoever in respect of the Capital Stock of any Person
         that may be issued or granted to, or held by, the Borrower while this
         Agreement is in effect or any Investment Property; provided that, in
         any case "Pledged Stock" shall not include more than 65% of each class
         of Capital Stock of any Foreign Subsidiary.
<PAGE>   4
                                                                               4

                  "Proceeds": all "proceeds" as such term is defined in Section
         9-306(1) of the Uniform Commercial Code in effect in the State of New
         York on the date hereof and, in any event, shall include, without
         limitation, all dividends or other income from the Pledged Securities,
         collections thereon or distributions or payments with respect thereto.

                  "Receivable": any right to payment for goods sold or leased or
         for services rendered, whether or not such right is evidenced by an
         Instrument or Chattel Paper and whether or not it has been earned by
         performance (including, without limitation, any Account).

                  "Trademarks": (a) all material trademarks, trade names,
         corporate names, company names, business names, fictitious business
         names, trade styles, service marks, logos and other source or business
         identifiers, and the goodwill associated therewith, now existing or
         hereafter adopted or acquired, all registrations and recordings
         thereof, and all applications in connection therewith, whether in the
         United States Patent and Trademark Office or in any similar office or
         agency of the United States, any State thereof or any other country or
         any political subdivision thereof, or otherwise, including, without
         limitation, any thereof referred to in Schedule 3, and (b) all renewals
         thereof.

                  "Trademark License" means any material agreement, written or
         oral, providing for the grant by or to the Borrower of any right to use
         any Trademark, including, without limitation, any thereof referred to
         in Schedule 3.

                  1.2 Other Definitional Provisions. (a) The words "hereof,"
"herein", "hereto" and "hereunder" and words of similar import when used in this
Agreement shall refer to this Agreement as a whole and not to any particular
provision of this Agreement, and Section and Schedule references are to this
Agreement unless otherwise specified.

                  (b) The meanings given to terms defined herein shall be
equally applicable to both the singular and plural forms of such terms.

                  2. Grant of Security Interest. As collateral security for the
prompt and complete payment and performance when due (whether at the stated
maturity, by acceleration or otherwise) of the Obligations, the Borrower hereby
grants to the Lender a security interest in all of the following property now
owned or at any time hereafter acquired by the Borrower or in which the Borrower
now has or at any time in the future may acquire any right, title or interest
(collectively, the "Collateral"):

                  (a)  all Accounts;

                  (b)  all Chattel Paper;

                  (c)  all Contracts;
<PAGE>   5
                                                                               5

                  (d)  all Copyrights

                  (e) all Copyright Licenses

                  (f) all Documents;

                  (g) all Equipment, including, without limitation, all
         Equipment located at or used in the operation of any gateway Earth
         station or gateway control center (except for (i) any Equipment
         procured under the Gateway Earth Station (GES) Contract dated October
         31, 1996 between the Borrower (as successor to ORBCOMM International
         Partners, L.P.) and ViaSat, Inc. (as successor to Scientific Atlanta,
         Inc.) (as amended, modified, or supplemented from time to time) to the
         extent that a GES Acceptance Test Certificate has not been issued with
         respect thereto and (ii) any Equipment procured under the Gateway Earth
         Station (GES) Contract dated October 31, 1996 between the Borrower (as
         successor to ORBCOMM International Partners, L.P.) and COMSAT RSI, Inc.
         (as amended, modified or supplemented from time to time) to the extent
         that a GES Acceptance Test Certificate has not been issued and full
         payment has not been made by the Borrower with respect thereto);

                  (h) all Goods;

                  (i) all General Intangibles;

                  (j) all Instruments;

                  (k) all Inventory;

                  (l) all Patents;

                  (m) all Patent Licenses;

                  (n) all Pledged Securities;

                  (o) all Trademarks;

                  (p) all Trademark Licenses;

                  (q) all FCC Licenses, (1) owned or held by the Borrower (if
         any) or (2) if owned by another Person, to the extent of any right or
         interest (including, without limitation, any "right to use" such FCC
         Licenses) that the Borrower may own or hold with respect thereto,
         (except to the extent that the Borrower is prohibited from granting a
         security interest therein pursuant to the Communications Act of 1934,
         as amended, and the regulations promulgated thereunder, as in effect at
         such time, provided, however, that such security interest does include,
         to the maximum extent permitted by law, all rights
<PAGE>   6
                                                                               6

         incident or appurtenant to the FCC Licenses and the right to receive
         all Proceeds derived from or in connection with the sale, assignment
         or transfer of the FCC Licenses);

                  (r) all satellites owned by the Borrower, wherever located;

                  (s) all books and records pertaining to the Collateral; and

                  (t) to the extent not otherwise included, all Proceeds and
         products of any and all of the foregoing and all collateral security
         and guarantees given by any Person with respect to any of the
         foregoing.

                  3. Representations and Warranties. The Borrower hereby
represents and warrants that:

                  3.1 Title; No Other Liens. Except for the security interest
granted to the Lender pursuant to this Agreement and the other Liens permitted
to exist on the Collateral pursuant to the Credit Agreement, the Borrower owns
each item of the Collateral free and clear of any and all Liens or claims of
others. No financing statement or other public notice with respect to all or any
part of the Collateral is on file or of record in any public office, except such
as have been filed in favor of the Lender pursuant to this Agreement or as are
permitted pursuant to the Credit Agreement.

                  3.2 Perfected First Priority Liens. Except with respect to
each Receivable with a related obligor that is a Government Authority, the
security interests granted pursuant to this Agreement (a) upon delivery to the
Lender of stock certificates or other documents representing the Pledged Stock
(together with undated stock powers duly executed in blank relating thereto),
delivery to the Lender of the Pledged Notes, duly endorsed in blank by the
Borrower and upon completion of the filings and other actions specified on
Schedule 5 will constitute perfected security interests in the Collateral in
favor of the Lenders as collateral security for the Obligations and (b) are
prior to all other Liens on the Collateral in existence on the date hereof
except for Permitted Liens and Liens described on Schedule 4.01(s) to the Credit
Agreement.

                  3.3 Inventory and Equipment. The Inventory and the Equipment
are kept at the locations listed on Schedule 6.

                  3.4 Chief Executive Office. The Borrower's chief executive
office is located at 21819 Atlantic Boulevard, Dulles, Virginia 20166.

                  3.5 Farm Products. None of the Collateral constitutes, or is
the Proceeds of, Farm Products.

                  3.6 Accounts. No amount payable to the Borrower under or in
connection with any Account is evidenced by any Instrument or Chattel Paper
which has not been delivered to the Lender.
<PAGE>   7
                                                                               7

                  (a) The place where the Borrower keeps its records concerning
its Accounts is at its chief executive office specified in Section 3.4.

                  (b) The amounts represented by the Borrower to the Lender from
time to time as owing to the Borrower in respect of the Accounts will at such
times be accurate in all material respects.

                  4. Covenants. The Borrower covenants and agrees with the
Lender that, from and after the date of this Agreement until the Obligations
shall have been paid in full and the Commitments shall have expired or otherwise
been terminated:

                  4.1 Delivery of Instruments and Chattel Paper. If any amount
payable under or in connection with any of the Collateral shall be or become
evidenced by any Instrument or Chattel Paper, such Instrument or Chattel Paper
shall be immediately delivered to the Lender, duly indorsed in a manner
satisfactory to the Lender, to be held as Collateral pursuant to this Agreement.

                  4.2 Maintenance of Insurance. (a) The Borrower will maintain,
with financially sound and reputable companies, insurance policies (1) insuring
the Inventory, Equipment, Goods and satellites against loss by fire, explosion,
theft and such other casualties as may be reasonably satisfactory to the Lender
and (2) insuring the Borrower and the Lender against liability for personal
injury and property damage relating to such Inventory, Equipment, Goods and
satellites, such policies to be in such form and amounts and having such
coverage as may be reasonably satisfactory to the Lender, with losses payable to
the Borrower and the Lender as their respective interests may appear.

                  (b) Within 10 days of the Closing Date, the Borrower shall
provide evidence of insurance coverage reasonably satisfactory to the Lender and
all such insurance shall (1) provide that no cancellation, material reduction in
amount or material change in coverage thereof shall be effective until at least
30 days after receipt by the Lender of written notice thereof, (2) name the
Lender as an insured party, (3) to the extent available, include a breach of
warranty clause and (4) be reasonably satisfactory in all other respects to the
Lender.

                  4.3 Maintenance of Perfected Security Interest; Further
Documentation. (a) The Borrower shall maintain the security interest created by
this Agreement as a perfected security interest having at least the priority
described in Section 3.2 and shall defend such security interest against the
claims and demands of all Persons whomsoever.

                  (b) At any time and from time to time, upon the written
request of the Lender, and at the sole expense of the Borrower, the Borrower
will promptly and duly execute and deliver such further instruments and
documents and take such further actions as the Lender may reasonably request for
the purpose of obtaining or preserving the full benefits of this Agreement and
of the rights and powers herein granted, including, without limitation, the
filing of any
<PAGE>   8
                                                                               8

financing or continuation statements under the Uniform Commercial Code in effect
in any jurisdiction with respect to the security interests created hereby.

                  4.4 Changes in Locations, Name, etc. The Borrower will not:

                  (a) permit any of the Inventory, Equipment or Goods to be kept
at a location other than those listed on Schedule 6, except for satellites which
have been launched and are in, or will be launched and placed in, a low Earth
orbit;

                  (b) change the location of its chief executive office from
that specified in Section 3.4; or

                  (c) change its name, identity or organizational structure to
such an extent that any financing statement filed by the Lender in connection
with this Agreement would become seriously misleading;

unless, in each case, it shall have given the Lender at least 20 days' prior
written notice of such change and shall have delivered to the Lender at least 5
Business Days prior to such change duly executed financing statements in
accordance with the Uniform Commercial Code in form and substance reasonably
satisfactory to the Lender.

                  4.5 Further Identification of Collateral. The Borrower will
furnish to the Lender from time to time statements and schedules further
identifying and describing the Collateral and such other reports in connection
with the Collateral as the Lender may reasonably request, all in reasonable
detail.

                  4.6 Notices. As soon as it becomes aware of any matter listed
in clauses (a) or (b), the Borrower will advise the Lender promptly, in
reasonable detail, at their respective addresses for notices provided for in the
Credit Agreement of:

                  (a) any Lien (other than security interests created hereby or
Liens permitted under the Credit Agreement) on any of the Collateral; and

                  (b) of the occurrence of any other event which could
reasonably be expected to have a material adverse effect on the aggregate value
of the Collateral or on the security interests created hereby.

                  5.  Provisions Relating to Receivables.

                  5.1 Borrower Remains Liable under Receivables. Anything herein
to the contrary notwithstanding, the Borrower shall remain liable under each of
the Receivables to observe and perform all the material conditions and
obligations to be observed and performed by it thereunder, all in accordance
with the terms of any agreement giving rise to each such Receivable. The Lender
shall not have any obligation or liability under any Receivable (or any
<PAGE>   9
                                                                               9

agreement giving rise thereto) by reason of or arising out of this Agreement or
the receipt by the Lender of any payment relating to such Receivable pursuant
hereto, nor shall the Lender be obligated in any manner to perform any of the
obligations of the Borrower under or pursuant to any Receivable (or any
agreement giving rise thereto), to make any payment, to make any inquiry as to
the nature or the sufficiency of any payment received by it or as to the
sufficiency of any performance by any party under any Receivable (or any
agreement giving rise thereto), to present or file any claim, to take any action
to enforce any performance or to collect the payment of any amounts which may
have been assigned to it or to which it may be entitled at any time or times.

                  5.2 Analysis of Receivables. The Lender shall have the right
to make test verifications of the Receivables in any manner and through any
medium that it reasonably considers advisable, and the Borrower shall furnish
all such assistance and information as the Lender may reasonably require in
connection with such test verifications. The Lender may at any time after the
occurrence and during the continuance of an Event of Default communicate with
the obligors on the Receivables to verify with them to the Lender's satisfaction
the existence, amount and terms of any Receivables.

                  5.3 Collections on Receivables. (a) The Lender hereby
authorizes the Borrower to collect the Receivables, subject to the Lender's
direction and control, and the Lender may curtail or terminate said authority at
any time after the occurrence and during the continuance of an Event of Default.
If required by the Lender at any time after the occurrence and during the
continuance of an Event of Default, any payments of Receivables, when collected
by the Borrower, (1) shall be forthwith (and, in any event, within two Business
Days) deposited by the Borrower in the exact form received, duly indorsed by the
Borrower to the Lender if required, in a Collateral Account maintained under the
sole dominion and control of the Lender, subject to withdrawal by the Lender
only as provided in Section 9.3, and (2) until so turned over, shall be held by
the Borrower in trust for the Lender, segregated from other funds of the
Borrower.

                  (b) Each such deposit of Proceeds of Receivables shall be
accompanied by a report identifying in reasonable detail the nature and source
of the payments included in the deposit.

                  (c) At the Lender's request, the Borrower shall deliver to the
Lender all original and other documents evidencing, and relating to, the
agreements and transactions which gave rise to the Receivables, including,
without limitation, all original orders, invoices and shipping receipts.

                  5.4 Representations and Warranties. (a) No amount payable to
the Borrower under or in connection with any Receivable is evidenced by any
Instrument or Chattel Paper which has not been delivered to the Lender.

                  (b) None of the obligors on any Receivables is a Governmental
Authority.
<PAGE>   10
                                                                              10

                  (c) The amounts represented by the Borrower to the Lender from
time to time as owing to the Borrower in respect of the Receivables will at such
times be accurate in all material respects.

                  5.5 Covenants. (a) Other than in the ordinary course of
business consistent with its past practice, the Borrower will not (i) grant any
extension of the time of payment of any Receivable, (ii) compromise or settle
any Receivable for less than the full amount thereof, (iii) release, wholly or
partially, any Person liable for the payment of any Receivable, (iv) allow any
credit or discount whatsoever on any Receivable, (v) amend, supplement or modify
any Receivable in any manner that could materially and adversely affect the
value thereof or (vi) fail to exercise promptly and diligently each and every
material right which it may have under each agreement giving rise to a
Receivable (other than any right of termination).

                  (b) The Borrower will deliver to the Lender a copy of each
material demand, notice or document received by it that questions the validity
or enforceability of more than 5% of the aggregate amount of the then
outstanding Receivables.

                  6.  Provisions Relating to Contracts.

                  6.1 Borrower Remains Liable under Contracts. Anything herein
to the contrary notwithstanding, the Borrower shall remain liable under each of
the Contracts to observe and perform all the conditions and obligations to be
observed and performed by it thereunder, all in accordance with and pursuant to
the terms and provisions of such Contract. The Lender shall not have any
obligation or liability under any Contract by reason of or arising out of this
Agreement or the receipt by the Lender of any payment relating to such Contract
pursuant hereto, nor shall the Lender be obligated in any manner to perform any
of the obligations of the Borrower under or pursuant to any Contract, to make
any payment, to make any inquiry as to the nature or the sufficiency of any
payment received by it or as to the sufficiency of any performance by any party
under any Contract, to present or file any claim, to take any action to enforce
any performance or to collect the payment of any amounts which may have been
assigned to it or to which it may be entitled at any time or times.

                  6.2 Communication With Contracting Parties. The Lender may at
any time after the occurrence and during the continuance of an Event of Default
communicate with parties to the Contracts to verify with them to the Lender's
satisfaction the existence, amount and terms of any Contracts.

                  6.3 Representations and Warranties. (a) No consent of any
party (other than the Borrower) to any Contract is required, or purports to be
required, in connection with the execution, delivery and performance of this
Agreement.

                  (b) Each Contract is in full force and effect and, to the best
of the Borrower's knowledge, constitutes a valid and legally enforceable
obligation of the parties thereto, subject to the effects of bankruptcy,
insolvency, fraudulent conveyance, reorganization, moratorium and
<PAGE>   11
                                                                              11

other similar laws relating to or affecting creditors' rights generally, general
equitable principles (whether considered in a proceeding in equity or at law)
and an implied covenant of good faith and fair dealing.

                  (c) No consent or authorization of, filing with or other act
by or in respect of any Governmental Authority is required in connection with
the execution, delivery, performance, validity or enforceability of any of the
Contracts by any party thereto other than those which have been duly obtained,
made or performed, are in full force and effect and do not subject the scope of
any such Contract to any material adverse limitation, either specific or general
in nature.

                  (d) Except as otherwise set forth on Schedule 1, neither the
Borrower nor (to the best of the Borrower's knowledge) any of the other parties
to the Contracts is in default in the performance or observance of any of the
terms thereof in any manner that, in the aggregate, could reasonably be expected
to have a material adverse effect.

                  (e) The right, title and interest of the Borrower in, to and
under the Contracts are not subject to any defenses, offsets, counterclaims or
claims that, in the aggregate, could reasonably be expected to have a material
adverse effect on the business, condition (financial or otherwise), operations,
performance, properties or prospects of the Borrower and its Subsidiaries taken
as a whole.

                  (f) No amount payable to the Borrower under or in connection
with any Contract is evidenced by any Instrument or Chattel Paper which has not
been delivered to the Lender.

                  (g) None of the parties to any Contract is a Governmental
Authority.

                  6.4 Covenants. (a) The Borrower will not, without the Lender's
prior written consent, amend, modify, terminate or waive any provision of any
Contract in any manner which could reasonably be expected to materially
adversely affect the value of such Contract as Collateral.

                  (b) The Borrower will deliver to the Lender a copy of each
material demand, notice or document received by it relating in any way to any
Contract that questions the validity or enforceability of such Contract.

                  7.  Provisions Relating to Intellectual Property.

                  7.1 Representations and Warranties. Schedules 2, 3 and 4 list
all material Intellectual Property that are registered Copyrights, Copyright
Licenses, Patents, Patent Licenses, registered Trademarks, Trademark Licenses
and other material Trademarks currently in use and/or owned by the Borrower in
its own name on the date hereof.

                  (a) On the date hereof, all material registered Copyrights,
Copyright Licenses, Patents, Patent Licenses, registered Trademarks, Trademark
Licenses and other material Trademarks currently in use or owned by the Borrower
are valid, subsisting, unexpired and
<PAGE>   12
                                                                              12

enforceable, have not been abandoned and, to the best of the Borrower's
knowledge, do not infringe in any material respect the intellectual property
rights of any other Person, except as disclosed in Schedules 2, 3 and 4.

                  (b) Except as set forth in Schedules 2, 3 and 4, on the date
hereof, none of the Intellectual Property owned by Borrower is the subject of
any licensing or franchise agreement.

                  (c) Except as disclosed in Schedules 2, 3 and 4, on the date
hereof, no holding, decision or judgment has been rendered by any Governmental
Authority which would limit, cancel or question the validity of, or the
Borrower's rights in, any Intellectual Property owned by Borrower in any respect
that could reasonably be expected to have a material adverse effect.

                  (d) Except as disclosed in Schedules 2, 3 and 4, no action or
proceeding is pending, or, to the knowledge of the Borrower, threatened, on the
date hereof (1) seeking to limit, cancel or question the validity of any
material registered Copyrights, Copyright Licenses, Patents, Patent Licenses,
registered Trademarks, Trademark Licenses and other material Trademarks
currently in use or owned by the Borrower or the Borrower's ownership interest
therein, or (2) which, if adversely determined, would have a material adverse
effect on the value of such Intellectual Property.

                  7.2  Covenants.

                  (a) The Borrower (either itself or through licensees) will (1)
continue to use each material Trademark on each and every trademark class of
goods applicable to its current line as reflected in its current catalogs,
brochures and price lists in order to maintain such Trademark in full force free
from any claim of abandonment for non-use, (2) maintain in all material respects
as in the past the quality of products and services offered under such
Trademark, (3) employ such Trademark with the appropriate notice of
registration, (4) not adopt or use any mark which is confusingly similar or a
colorable imitation of such Trademark unless the Lender shall obtain a perfected
security interest in such mark pursuant to this Agreement, and (5) not (and not
permit any licensee or sublicensee thereof to) do any act or knowingly omit to
do any act whereby such Trademark may become invalidated or otherwise impaired.

                  (b) The Borrower will not do any act, or omit to do any act,
whereby any material Patent may become abandoned or dedicated.

                  (c) The Borrower (either itself or through licensees) (1) will
employ each material Copyright and (2) will not do (and will use commercially
reasonable efforts to prevent any licensee or sublicensee thereof from doing)
any act or knowingly omit to do any act whereby any material portion of the
Copyrights may become invalidated or otherwise impaired. The Borrower will not
(either itself or through licensees) do any act whereby any material portion of
the Copyrights may fall into the public domain.
<PAGE>   13
                                                                              13

                  (d) The Borrower will notify the Lender immediately if it
knows, or has reason to know, that any application or registration relating to
any material Copyright, Patent or Trademark may become abandoned or dedicated,
or of any adverse determination or development (including, without limitation,
the institution of, or any such determination or development in, any proceeding
in the United States Copyright Office, the United States Patent and Trademark
Office or any court or tribunal in any country) regarding the Borrower's
ownership of any material Copyright, Patent or Trademark or its right to
register the same or to keep and maintain the same.

                  (e) Whenever the Borrower, either by itself or through any
agent, employee, licensee or designee, shall file an application for the
registration of any Intellectual Property with the United States Patent and
Trademark Office, the United States Copyright Office or any similar office or
agency in any other country or any political subdivision thereof, the Borrower
shall report such filing to the Lender within five Business Days after the last
day of the fiscal quarter in which such filing occurs. Upon request of the
Lender, the Borrower shall execute and deliver any and all agreements,
instruments, documents, and papers as the Lender may reasonably request to
evidence the Lender's security interest in any Copyright, Patent or Trademark
and the goodwill and general intangibles of the Borrower relating thereto or
represented thereby.

                  (f) The Borrower will take all commercially reasonable and
necessary steps, including, without limitation, in any proceeding before the
United States Copyright Office, the United States Patent and Trademark Office,
or any similar office or agency in any other country or any political
subdivision thereof, to maintain and pursue each application (and to obtain the
relevant registration) and to maintain each registration of the material
Intellectual Property, including, without limitation, filing of applications for
renewal, affidavits of use and affidavits of incontestability.

                  (g) In the event that any material Intellectual Property owned
by Borrower is infringed, misappropriated or diluted by a third party, the
Borrower shall (i) take such actions as the Borrower shall reasonably deem
appropriate under the circumstances to protect such Intellectual Property and
(ii) if such Intellectual Property is of material economic value, promptly
notify the Lender after it learns thereof and, if the Lender so directs, sue for
infringement, misappropriation or dilution, to seek injunctive relief where
appropriate and to recover any and all damages for such infringement,
misappropriation or dilution.

                  8.  Provisions Relating to Pledged Securities.

                  8.1 Representations and Warranties. Except as disclosed on
Schedule 7 hereto, the shares of Pledged Stock pledged or to be pledged by the
Borrower hereunder constitute all the issued and outstanding shares of all
classes of the Capital Stock of each Issuer owned by the Borrower.

                  (a) All the shares of the Pledged Stock have been duly and
validly issued and are fully paid and nonassessable.
<PAGE>   14
                                                                              14

                  (b) To the best of the Borrower's knowledge, each of the
Pledged Notes constitutes the legal, valid and binding obligation of the obligor
with respect thereto, enforceable in accordance with its terms, subject to the
effects of bankruptcy, insolvency, fraudulent conveyance, reorganization,
moratorium and other similar laws relating to or affecting creditors' rights
generally, general equitable principles (whether considered in a proceeding in
equity or at law) and an implied covenant of good faith and fair dealing.

                  (c) The Borrower is the record and beneficial owner of, and
has good and marketable title to, the Pledged Securities pledged by it
hereunder, free of any and all Liens or options in favor of, or claims of, any
other Person, except the security interest created by this Agreement.

                  8.2 Covenants. (a) If the Borrower shall become entitled to
receive or shall receive any stock certificate (including, without limitation,
any certificate representing a stock dividend or a distribution in connection
with any reclassification, increase or reduction of capital or any certificate
issued in connection with any reorganization), option or rights in respect of
the Capital Stock of any Issuer or any Investment Property, whether in addition
to, in substitution of, as a conversion of, or in exchange for, any shares of
the Pledged Stock, or otherwise in respect thereof, the Borrower shall accept
the same as the agent of the Lender, hold the same in trust for the Lender and
deliver the same forthwith to the Lender in the exact form received, duly
indorsed by the Borrower to the Lender, if required, together with an undated
stock power covering such certificate duly executed in blank by the Borrower and
with, if the Lender so requests, signature guaranteed, to be held by the Lender,
subject to the terms hereof, as additional collateral security for the
Obligations; provided, however, that in no event shall the amount of Pledged
Stock held by the Lender hereunder exceed 65% of each class of Capital Stock of
any Foreign Subsidiary. After the occurrence and during the continuance of a
Default or Event of Default, any sums paid upon or in respect of the Pledged
Securities upon the liquidation or dissolution of any Issuer shall be paid over
to the Lender to be held by it hereunder as additional collateral security for
the Obligations, and in case any distribution of capital shall be made on or in
respect of the Pledged Securities or any property shall be distributed upon or
with respect to the Pledged Securities pursuant to the recapitalization or
reclassification of the capital of any Issuer or pursuant to the reorganization
thereof, the property so distributed shall, unless otherwise subject to a
perfected security interest in favor of the Lender, be delivered to the Lender
to be held by it hereunder as additional collateral security for the
Obligations. If any sums of money or property so paid or distributed in respect
of the Pledged Securities shall be received by the Borrower, the Borrower shall,
until such money or property is paid or delivered to the Lender, hold such money
or property in trust for the Lender, segregated from other funds of the
Borrower, as additional collateral security for the Obligations.

                  (b) Without the prior written consent of the Lender, the
Borrower will not (i) vote to enable, or take any other action to permit, any
Issuer to issue any stock or other equity securities of any nature or to issue
any other securities convertible into or granting the right to purchase or
exchange for any stock or other equity securities of any nature of any Issuer,
(ii)
<PAGE>   15
                                                                              15

except as permitted by the Credit Agreement, sell, assign, transfer, exchange,
or otherwise dispose of, or grant any option with respect to, the Pledged
Securities or Proceeds thereof, (iii) create, incur or permit to exist any Lien
or option in favor of, or any claim of any Person with respect to, any of the
Pledged Securities or Proceeds thereof, or any interest therein, except for the
security interests created by this Agreement or (iv) enter into any agreement or
undertaking restricting the right or ability of the Borrower or the Lender to
sell, assign or transfer any of the Pledged Securities or Proceeds thereof.

                  9. Remedies.

                  9.1 Notice to Obligors and Contract Parties. Upon the request
of the Lender at any time after the occurrence and during the continuance of an
Event of Default, the Borrower shall notify obligors on the Receivables and
parties to the Contracts that the Receivables and the Contracts have been
assigned to the Lender and that payments in respect thereof shall be made
directly to the Lender.

                  9.2 Proceeds to be Turned Over To Lender. In addition to the
rights of the Lender specified in Section 5.3 with respect to payments of
Receivables, if an Event of Default shall occur and be continuing all Proceeds
received by the Borrower consisting of cash, checks and other near-cash items
shall be held by the Borrower in trust for the Lender, segregated from other
funds of the Borrower, and shall, forthwith upon receipt by the Borrower, be
turned over to the Lender in the exact form received by the Borrower (duly
indorsed by the Borrower to the Lender, if required) and held by the Lender in a
Collateral Account maintained under its the sole dominion and control. All
Proceeds while held by the Lender in a Collateral Account (or by the Borrower in
trust for the Lender) shall continue to be held as collateral security for all
the Obligations and shall not constitute payment thereof until applied as
provided in Section 9.3.

                  9.3 Application of Proceeds. At such intervals as may be
agreed upon by the Borrower and the Lender, or, if an Event of Default shall
have occurred and be continuing, at any time at the Lender's election, the
Lender may apply all or any part of Proceeds held in any Collateral Account in
payment of the Obligations, and any part of such funds which the Lender elects
not so to apply and deems not required as collateral security for the
Obligations shall be paid over from time to time by the Lender to the Borrower
or to whomsoever may be lawfully entitled to receive the same. Any balance of
such Proceeds remaining after the Obligations shall have been paid in full and
the Commitments shall have expired or otherwise been terminated shall be paid
over to the Borrower or to whomsoever may be lawfully entitled to receive the
same.

                  9.4 Code Remedies. If an Event of Default shall occur and be
continuing, the Lender may exercise, in addition to all other rights and
remedies granted to it in this Agreement and in any other instrument or
agreement securing, evidencing or relating to the Obligations, all rights and
remedies of a secured party under the Code. Without limiting the generality of
the foregoing, the Lender, without demand of performance or other demand,
presentment, protest, advertisement or notice of any kind (except any notice
required by law referred to below) to or
<PAGE>   16
                                                                              16

upon the Borrower or any other Person (all and each of which demands, defenses,
advertisements and notices are hereby waived), may in such circumstances
forthwith collect, receive, appropriate and realize upon the Collateral, or any
part thereof, and/or may forthwith sell, lease, assign, give option or options
to purchase, or otherwise dispose of and deliver the Collateral or any part
thereof (or contract to do any of the foregoing), in one or more parcels at
public or private sale or sales, at any exchange, broker's board or office of
the Lender or elsewhere upon such terms and conditions as it may deem advisable
and at such prices as it may deem best, for cash or on credit or for future
delivery without assumption of any credit risk. The Lender shall have the right
upon any such public sale or sales, and, to the extent permitted by law, upon
any such private sale or sales, to purchase the whole or any part of the
Collateral so sold, free of any right or equity of redemption in the Borrower,
which right or equity is hereby waived or released. The Borrower further agrees,
at the Lender's request, to assemble the Collateral and make it available to the
Lender at places which the Lender shall reasonably select, whether at the
Borrower's premises or elsewhere. The Lender shall apply the net proceeds of any
action taken by it pursuant to this Section, after deducting all reasonable
costs and expenses of every kind incurred in connection therewith or incidental
to the care or safekeeping of any of the Collateral or in any way relating to
the Collateral or the rights of the Lender hereunder, including, without
limitation, reasonable attorneys' fees and disbursements, to the payment in
whole or in part of the Obligations, in such order as the Lender may elect, and
only after such application and after the payment by the Lender of any other
amount required by any provision of law, including, without limitation, Section
9-504(1)(c) of the Code, need the Lender account for the surplus, if any, to the
Borrower. To the extent permitted by applicable law, the Borrower waives all
claims, damages and demands it may acquire against the Lender arising out of the
exercise by it of any rights hereunder. If any notice of a proposed sale or
other disposition of Collateral shall be required by law, such notice shall be
deemed reasonable and proper if given at least 10 days before such sale or other
disposition.

                  9.5 Certain Regulatory Requirements. With respect to all FCC
Licenses (1) owned or held by the Borrower (if any) or (2) if owned by another
Person, to the extent of any right or interest (including, without limitation,
any "right to use" such FCC Licenses) that the Borrower may own or hold with
respect thereto:

                  (a) The Borrower shall take all action that the Lenders may
reasonably request in the exercise of its rights and remedies hereunder, which
include the right to require the Borrower to transfer or assign (1) the FCC
Licenses (to the extent the Borrower owns any FCC Licenses) or (2) to the extent
such FCC Licenses may be owned by another Person, any right or interest
(including, without limitation, any "right to use" such FCC Licenses) that the
Borrower may own or hold with respect thereto, to any party or parties. In
furtherance of this right, the Borrower shall (1) cooperate fully with the
Lender in obtaining all approvals and consents from the FCC, each other
Governmental Authority or any other Person that the Lender may reasonably deem
necessary or advisable to accomplish any such transfer or assignment of such FCC
Licenses or, if applicable, whatever right or interest (including, without
limitation, any "right to use" such FCC Licenses) the Borrower may hold with
respect thereto, and (2) prepare, execute and file with the FCC, any other
Governmental Authority or any other Person any application, request for consent,
<PAGE>   17
                                                                              17

certificate or instrument that the Lender may reasonably deem necessary or
advisable to accomplish any such transfer or assignment of such FCC Licenses or,
if applicable, whatever right or interest (including, without limitation, any
"right to use" such FCC Licenses) the Borrower may hold with respect thereto. If
the Borrower fails to execute such applications, requests for consent,
certificates or instruments, the clerk of any court that has jurisdiction over
the Collateral Documents may execute and file the same on behalf of the
Borrower.

                  (b) Notwithstanding anything to the contrary contained herein,

                  (1) the Lender will not take any action hereunder that would
         constitute or result in any transfer of control of the FCC Licenses
         without obtaining all necessary FCC and other Governmental Authority
         approvals. The Lender shall be entitled to rely on the advice of FCC
         counsel selected by it to determine whether FCC approval or other
         Governmental Authority approvals are required, and

                  (2) the Lender shall not foreclose on, sell, transfer or
         otherwise dispose of, or exercise any right to control the FCC Licenses
         as provided herein, unless such action is taken in accordance with the
         provisions of the Communications Act of 1934, as from time to time
         amended, and the applicable rules, regulations and policies of the FCC
         and any other Governmental Authority.

                  (c) The Borrower acknowledges that the approval of the FCC,
each other appropriate Governmental Authority and each other appropriate Person
to the assignment of the FCC Licenses, or the Borrower's rights and interests
therein, is integral to the Lender's realization of the value of the Collateral,
including the FCC Licenses and the Borrower's rights and interests therein, that
there is no adequate remedy at law for failure by the Borrower to comply with
the provisions of this Section 9.5 and that such failure could not be adequately
compensable in damages. Therefore, the Borrower agrees that the provisions of
this Section 9.5 may be specifically enforced.

                  10. Lender's Appointment as Attorney-in-Fact; Lender's
Performance of Borrower's Obligations.

                  10.1 Powers. The Borrower hereby irrevocably constitutes and
appoints the Lender and any officer or agent thereof, with full power of
substitution, as its true and lawful attorney-in-fact with full irrevocable
power and authority in the place and stead of the Borrower and in the name of
the Borrower or in its own name, for the purpose of carrying out the terms of
this Agreement, to take any and all appropriate action and to execute any and
all documents and instruments which may be necessary or desirable to accomplish
the purposes of this Agreement, and, without limiting the generality of the
foregoing, the Borrower hereby gives the Lender the power and right, on behalf
of the Borrower, without notice to or assent by the Borrower, to do any or all
of the following:
<PAGE>   18
                                                                              18

                  (a) in the name of the Borrower or its own name, or otherwise,
         take possession of and indorse and collect any checks, drafts, notes,
         acceptances or other instruments for the payment of moneys due under
         any Receivable or Contract or with respect to any other Collateral and
         file any claim or take any other action or proceeding in any court of
         law or equity or otherwise deemed appropriate by the Lender for the
         purpose of collecting any and all such moneys due under any Receivable
         or Contract or with respect to any other Collateral whenever payable;

                  (b) in the case of any Copyright, Patent or Trademark, execute
         and deliver any and all agreements, instruments, documents and papers
         as the Lender may reasonably request to evidence the Lender's security
         interest in such Copyright, Patent or Trademark and the goodwill and
         general intangibles of the Borrower relating thereto or represented
         thereby;

                  (c) pay or discharge taxes and Liens levied or placed on or
         threatened against the Collateral, effect any repairs or any insurance
         called for by the terms of this Agreement and pay all or any part of
         the premiums therefor and the costs thereof;

                  (d) execute, in connection with any sale provided for in
         Section 9.4, any indorsements, assignments or other instruments of
         conveyance or transfer with respect to the Collateral; and

                  (e) (1) direct any party liable for any payment under any of
         the Collateral to make payment of any and all moneys due or to become
         due thereunder directly to the Lender or as the Lender shall direct;
         (2) ask or demand for, collect, receive payment of and receipt for, any
         and all moneys, claims and other amounts due or to become due at any
         time in respect of or arising out of any Collateral; (3) sign and
         indorse any invoices, freight or express bills, bills of lading,
         storage or warehouse receipts, drafts against debtors, assignments,
         verifications, notices and other documents in connection with any of
         the Collateral; (4) commence and prosecute any suits, actions or
         proceedings at law or in equity in any court of competent jurisdiction
         to collect the Collateral or any thereof and to enforce any other right
         in respect of any Collateral; (5) defend any suit, action or proceeding
         brought against the Borrower with respect to any Collateral; (6)
         settle, compromise or adjust any such suit, action or proceeding and,
         in connection therewith, to give such discharges or releases as the
         Lender may deem appropriate; (7) assign any Intellectual Property
         (along with the goodwill of the business to which any such Intellectual
         Property pertains), throughout the world for such term or terms, on
         such conditions, and in such manner, as the Lender shall in its sole
         discretion determine; and (8) generally, sell, transfer, pledge and
         make any agreement with respect to or otherwise deal with any of the
         Collateral as fully and completely as though the Lender were the
         absolute owner thereof for all purposes, and do, at the Lender's option
         and the Borrower's expense, at any time, or from time to time, all acts
         and things which the Lender deems necessary to protect, preserve or
         realize upon the Collateral and its security interests therein and to
         effect the intent of this Agreement, all as fully and effectively as
         the Borrower might do.
<PAGE>   19
                                                                              19

         Anything in this Section to the contrary notwithstanding, the Lender
agrees that it will not exercise any rights under the power of attorney provided
for in this Section unless an Event of Default shall have occurred and be
continuing.

                  10.2 Performance by Lender of Borrower's Obligations. If the
Borrower fails to perform or comply with any of its agreements contained herein,
the Lender, at its option, but without any obligation so to do, may perform or
comply, or otherwise cause performance or compliance, with such agreement.

                  10.3 Borrower's Reimbursement Obligation. The expenses of the
Lender incurred in connection with actions undertaken as provided in this
Section, together with interest thereon at a rate per annum equal to the rate
per annum at which interest would then be payable on past due Advances under the
Credit Agreement, from the date of payment by the Lender to the date reimbursed
by the Borrower, shall be payable by the Borrower to the Lender on demand.

                  10.4 Ratification; Power Coupled With An Interest. The
Borrower hereby ratifies all that said attorneys shall lawfully do or cause to
be done by virtue hereof. All powers, authorizations and agencies contained in
this Agreement are coupled with an interest and are irrevocable until this
Agreement is terminated and the security interests created hereby are released.

                  11. Duty of Lender. The Lender's sole duty with respect to the
custody, safekeeping and physical preservation of the Collateral in its
possession, under Section 9-207 of the Code or otherwise, shall be to deal with
it in the same manner as the Lender deals with similar property for its own
account. The Lender and its officers, directors, employees or agents shall not
be liable for failure to demand, collect or realize upon any of the Collateral
or for any delay in doing so or shall be under any obligation to sell or
otherwise dispose of any Collateral upon the request of the Borrower or any
other Person or to take any other action whatsoever with regard to the
Collateral or any part thereof. The powers conferred on the Lender hereunder are
solely to protect the Lender's interests in the Collateral and shall not impose
any duty upon the Lender to exercise any such powers. The Lender shall be
accountable only for amounts that it actually receives as a result of the
exercise of such powers, and neither it nor any of its officers, directors,
employees or agents shall be responsible to the Borrower for any act or failure
to act hereunder, except for its own gross negligence or willful misconduct.

                  12. Execution of Financing Statements. Pursuant to Section
9-402 of the Code, the Borrower authorizes the Lender to file financing
statements with respect to the Collateral without the signature of the Borrower
in such form and in such filing offices as the Lender reasonably determines
appropriate to perfect the security interests of the Lender under this
Agreement. A carbon, photographic or other reproduction of this Agreement shall
be sufficient as a financing statement for filing in any jurisdiction.
<PAGE>   20
                                                                              20

                  13. Notices. All notices, requests and demands to or upon the
Lender or the Borrower hereunder shall be effected in the manner provided for in
Section 7.02 of the Credit Agreement.

                  14. Severability. Any provision of this Agreement which is
prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction,
be ineffective to the extent of such prohibition or unenforceability without
invalidating the remaining provisions hereof, and any such prohibition or
unenforceability in any jurisdiction shall not invalidate or render
unenforceable such provision in any other jurisdiction.

                  15. Amendments in Writing; No Waiver; Cumulative Remedies.

                  15.1 Amendments in Writing. None of the terms or provisions of
this Agreement may be waived, amended, supplemented or otherwise modified except
by a written instrument executed by the Borrower and the Lender, provided that
any provision of this Agreement imposing obligations on the Borrower may be
waived by the Lender in a written instrument executed by the Lender.

                  15.2 No Waiver by Course of Conduct. The Lender shall not by
any act (except by a written instrument pursuant to Section 15.1), delay,
indulgence, omission or otherwise be deemed to have waived any right or remedy
hereunder or to have acquiesced in any Default or Event of Default. No failure
to exercise, nor any delay in exercising, on the part of the Lender, any right,
power or privilege hereunder shall operate as a waiver thereof. No single or
partial exercise of any right, power or privilege hereunder shall preclude any
other or further exercise thereof or the exercise of any other right, power or
privilege. A waiver by the Lender of any right or remedy hereunder on any one
occasion shall not be construed as a bar to any right or remedy which the Lender
would otherwise have on any future occasion.

                  15.3 Remedies Cumulative. The rights and remedies herein
provided are cumulative, may be exercised singly or concurrently and are not
exclusive of any other rights or remedies provided by law.

                  16. Releases. At such time as the Obligations shall have been
paid in full the Collateral shall be released from the Liens created hereby, and
this Agreement and all obligations (other than those expressly stated to survive
such termination) of the Lender and the Borrower hereunder shall terminate, all
without delivery of any instrument or performance of any act by any party, and
all rights to the Collateral shall revert to the Borrower. At the request and
sole expense of the Borrower following any such termination, the Lender shall
deliver to the Borrower any Collateral held by the Lender hereunder, and execute
and deliver to the Borrower such documents as the Borrower shall reasonably
request to evidence such termination.

                  17. Section Headings. The Section headings used in this
Agreement are for convenience of reference only and are not to affect the
construction hereof or be taken into consideration in the interpretation hereof.
<PAGE>   21
                                                                              21

                  18. Successors and Assigns. This Agreement shall be binding
upon the successors and assigns of the Borrower and shall inure to the benefit
of the Lender and its successors and assigns.

                  19. Governing Law. This Agreement shall be governed by, and
construed and interpreted in accordance with, the law of the State of New York.
<PAGE>   22
         IN WITNESS WHEREOF, the undersigned has caused this Security Agreement
to be duly executed and delivered as of the date first above written.

                                           ORBCOMM GLOBAL, L.P.

                                           By:_________________________________
                                           Name:
                                           Title: Chief Executive Officer

                                           By:  Teleglobe Mobile Partners
                                           Its General Partner

                                           By: Teleglobe Mobile Investment, Inc.
                                           Its Managing Partner

                                           By:_________________________________
                                           Name:  Andre Bourbonnais
                                           Title:

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