Document:

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                                                                   EXHIBIT 10.16

                                     FORM OF
                     GUARANTY AND INDEMNIFICATION AGREEMENT

     This Guaranty and Indemnification Agreement (this "AGREEMENT") is entered
this ______ day of September, 2000 (the "EFFECTIVE DATE") by Propel, Inc., a
corporation organized and existing under the laws of the State of Delaware
("PROPEL"), in favor of Motorola, Inc., a corporation organized and existing
under the laws of the State of Delaware ("MOTOROLA").

                                    RECITALS

     WHEREAS, as of the Effective Date, Motorola owns all of the issued and
outstanding shares of Propel's common stock;

     WHEREAS, the Board of Directors of Motorola has determined that it would be
appropriate and desirable to separate the Propel Business (as defined herein)
from Motorola and has caused Propel to be incorporated to facilitate such
separation;

     WHEREAS, Motorola and Propel have entered into a Master Separation
Agreement (the "SEPARATION AGREEMENT") effective as of the Effective Date in
order to facilitate the separation of the Propel Business from Motorola;

     WHEREAS, pursuant to the Separation Agreement, Motorola is transferring to
Propel and Propel is assuming, substantially all of the assets (including all of
the shares of the capital stock of the Operating Companies (as defined herein))
and liabilities associated with the Propel Business;

     WHEREAS, in order to enhance the creditworthiness of various loan and other
obligations of certain of the Operating Companies (the "OC OBLIGATIONS"),
Motorola has issued certain credit enhancements, including without limitation,
certain guarantees and letters of credit as described in SCHEDULE I attached
hereto (collectively, the "MOTOROLA COMMITMENTS");

     WHEREAS, in accordance with and as a condition precedent to Motorola's
execution of the Separation Agreement, Propel has agreed to guarantee all of
Motorola's obligations under the Motorola Commitments, and indemnify Motorola
for all fees, costs, losses or damages incurred in connection therewith, on the
terms and conditions set forth herein;

     NOW THEREFORE, in consideration of the mutual covenants and agreements
herein contained and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, Motorola and Propel each agree as
follows:

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     1.   DEFINITIONS AND INTERPRETIVE PROVISIONS.

          1.1  DEFINED TERMS. Capitalized terms used throughout this Agreement
(including the attachments and exhibits, which are a part of this Agreement)
shall have the meanings set forth in this Section 1.1. Capitalized terms not
defined herein shall have the meanings assigned to them in the Separation
Agreement.

          "ADR" shall have he meaning assigned in Section 13.9 herein.

          "AFFILIATE" of any specified Person means any other Person directly or
indirectly Controlling, Controlled by, or under common Control with, such
specified Person; provided, however, that for purposes of this Agreement, (i)
Motorola and its Subsidiaries (other than Propel and its Subsidiaries) shall not
be considered Affiliates of Propel and (ii) Propel and its Subsidiaries shall
not be considered Affiliates of Motorola.

          "AGREEMENT" shall have the meaning assigned in the introductory
paragraph hereof.

          "BENEFICIARIES" means those Persons (and any of their successors,
assigns or designees) to whom the Motorola Commitments are issued or that
possess the legal, equitable or contractual ability to demand payment or
performance under or pursuant to the Motorola Commitments.

          "CONTRACTUAL OBLIGATION" shall have the meaning assigned in Section
5.2 herein.

          "CONTROL" means the possession, direct or indirect, of the power to
direct or cause the direction of the management of the policies of a Person,
whether through the ownership of voting securities, by contract or otherwise.
"Controlling" and "Controlled" have the corollary meanings ascribed thereto.

          "DISPUTE" shall have the meaning assigned in Section 13.9 herein.

          "EFFECTIVE DATE" shall have the meaning assigned in the introductory
paragraph hereof.

          "GOVERNMENTAL AUTHORITY" means 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.

          "GUARANTEED OBLIGATIONS" shall mean all obligations to third parties
now or hereafter existing, whether direct or indirect, absolute or contingent,
and whether for fees (including reasonable attorneys' fees and costs, expert
witness fees, collateral monitoring fees, and examination fees), costs, losses,
damages, causes of action, premiums, indemnities, expenses, Taxes, risk support
(existing as of the Effective Date), charges and any other obligations
chargeable or owing under the Motorola Commitments.

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          "INDEMNIFIED PARTY" shall have the meaning assigned in Section 3.1
herein.

          "MOTOROLA COMMITMENTS" shall have the meaning assigned in the Recitals
hereof.

          "OC OBLIGATIONS" shall have the meaning assigned in the Recitals
hereof.

          "OPERATING COMPANIES" means any of the following companies: Baja
Celular Mexicana S.A. de C.V.; Movitel Del Noroeste S.A. de C.V.; Telefonia
Celular Del Norte S.A. de C.V.; Celular de Telefonia S.A. de C.V.; Compania de
Radiocommunicaciones Moviles, S.A.; Entel Telefonia Personal, S.A.; Tricom S.A.;
Abiatar, S.A.; Global Telecom, S.A.; Grupo Portatel S.A. de C.V.; Pelephone
Communications Ltd.; The Egyptian Company for Mobile Services; UAB Omnitel;
Jordan Mobile Telephone Services Company Ltd.; Bakcell II; Hutchison Telephone
Company Ltd.; and Pakistan Mobile Communications (Pvt) Ltd.

          "PERSON" means an individual, a partnership, a corporation, a limited
liability company, an association, a joint stock company, a trust, a joint
venture, an unincorporated organization and a governmental entity or any
department, agency, or political subdivision thereof.

          "PRIME RATE" means the rate of interest charged by Citibank to its
best customers for short-term unsecured loans.

          "PROPEL BUSINESS" means the portion of the business conducted
immediately prior to the Effective Date, by the Network Management Group of
Motorola (for purposes of this Agreement, references to Propel and the Propel
Business prior to the Effective Date shall be deemed to mean the business
conducted by the Network Management Group), including (i) all business
operations whose financial performance is reflected in the Propel Financial
Statements, but expressly excluding, for the avoidance of doubt, Motorola's
ownership of wireless operating companies in Japan and Honduras, any residual
business related to Iridium LLC and any of its Affiliates or related gateway
operating companies or Iridium LLC handset sales or support; and (ii) the PCS
business in Israel, which as of the Effective Date, shall be known as Wireless
Distribution Services.

          "PROPEL FINANCIAL STATEMENTS" means the latest financial statements of
Propel set forth in the registration statement on Form S-1, Registration No.
333-40200 filed by Propel with the Securities and Exchange Commission in
connection with the initial public offering of the Propel common stock, together
with all amendments and supplements thereto, as amended at the date of this
Agreement.

          "REQUIREMENT OF LAW" shall have the meaning assigned in Section 5.2
herein.

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          "SEPARATION AGREEMENT" shall have the meaning set forth in the
Recitals hereof.

          "STEERING COMMITTEE" shall have the meaning set forth in Section 13.8
herein.

          "SUBSIDIARY" means with respect to any specified Person, any
corporation or other legal entity of which such Person or any of its
Subsidiaries Controls or owns, directly or indirectly, more than 50% of the
stock or other equity interest entitled to vote on the election of the members
to the board of directors or similar governing body; provided, however, that for
purposes of this Agreement, Propel and its Subsidiaries shall not be considered
Subsidiaries of Motorola.

          "TAXES" means any and all taxes, withholdings, charges, fees, costs,
expenses, or duties imposed by any Government Authority, excluding Taxes based
on the overall net income or profits of any Person.

          1.2  OTHER DEFINITIONAL PROVISIONS.

               (a)  The words "hereof," "herein" 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 or
Schedule references contained in this Agreement are references to Sections or
Schedules in or 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.   CONTINUING AND UNCONDITIONAL GUARANTY.

          2.1  UNCONDITIONAL GUARANTY. Propel hereby unconditionally, absolutely
and irrevocably guarantees the full and prompt payment of the Guaranteed
Obligations, regardless of any law, regulation or order now or hereafter in
effect in any jurisdiction affecting any of the terms of the OC Obligations, the
Motorola Commitments or this Agreement or the rights of Motorola with respect
thereto or hereto (provided that Propel is not obligated to violate any such
law, regulation or order), without deduction for any claim of set-off or
counterclaim (any such set-off or counterclaim to be made in a separate
proceeding), including accrued interest, from and including the date of payment
by Motorola of any Guaranteed Obligations through and excluding the date Propel
fully reimburses Motorola for such payment (provided such payment is received by
Motorola by no later than 1:00 p.m.). Interest shall accrue at the Prime Rate
per annum through and including the tenth (10th) day after payment by Motorola
of any Guaranteed Obligations and notice of such payment being made to Propel
and thereafter shall accrue at the Prime Rate PLUS two percent (2%) per annum.

          2.2  PROPEL'S OBLIGATIONS CONTINUING AND ABSOLUTE. Propel's
obligations hereunder shall be continuing and not be subject to any reduction,
limitation, impairment or termination for any reason, including but not limited
to, any claim of

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waiver, release, surrender, alteration or compromise, and shall not be subject
to any defense or set-off, counterclaim, recoupment or termination whatsoever by
reason of any of the following:

               (a)  the invalidity or unenforceability of the Motorola
Commitments or any agreement relating thereto, including without limitation, any
agreement relating to the OC Obligations;

               (b)  any extension, modification or renewal of, or indulgence
with respect to, or substitutions for, the sums evidenced by the Motorola
Commitments or any part thereof or any agreement relating thereto, including
without limitation, any agreement relating to the OC Obligations, at any time;

               (c)  any failure or omission to enforce any right, power or
remedy with respect to this Agreement, the Motorola Commitments or any part
thereof or any agreement relating thereto, including without limitation, any
agreement relating to the OC Obligations;

               (d)  any waiver of any right, power or remedy or of any default
with respect to this Agreement, the Motorola Commitments or any part thereof or
any agreement relating thereto, including without limitation, any agreement
relating to the OC Obligations;

               (e)  any compromise, settlement, waiver or other modification, or
any release or surrender, with or without consideration, or any part thereof or
any other obligation of any Person or entity with respect to the Motorola
Commitments or any part thereof or any agreement relating thereto, including
without limitation, any agreement relating to the OC Obligations;

               (f)  any defense, set-off, or counterclaim, to the payment of,
any right of recoupment, in connection with, or any termination of, the
Guaranteed Obligations or the OC Obligations;

               (g)  any change in the time, manner or place of payment of, or in
any other term of, all or any of the Guaranteed Obligations or the OC
Obligations, or any other obligations of any of the Operating Companies under or
in respect of any agreement relating to the Motorola Commitments or the OC
Obligations, or any other written amendment or waiver of or any consent to
departure from such agreements (including, without limitation, any increase in
the Guaranteed Obligations or OC Obligations resulting from the extension of
additional credit to any of the Operating Companies or any of their Affiliates
or otherwise, in each case without the prior written consent of, but with
commercially reasonable notice to, Propel);

               (h)  any taking, exchange, release, nonperfection or
nonperformance of any collateral, or any taking, release or amendment or waiver
of, or

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consent to departure from, any other guaranty, for all or any of the Guaranteed
Obligations or the OC Obligations;

               (i)  any manner of application of collateral, or proceeds
thereof, to all or any of the Guaranteed Obligations or the OC Obligations, or
any manner of sale or other disposition of any collateral for any of the
Guaranteed Obligations or the OC Obligations or any other obligations of any
Operating Companies or any other sale of assets of any Operating Companies or
any of their Affiliates;

               (j)  the existence or non-existence of any of the Operating
Companies as legal entities, or any change, restructuring or termination of the
corporate structure or existence of any of the Operating Companies or any of
their Affiliates;

               (k)  any failure of Motorola to disclose to Propel or any of the
Operating Companies any information relating to the business, condition
(financial or otherwise), operations, performance, properties or prospects of
any of the Operating Companies or compliance with any Motorola Commitments by
any of the Operating Companies now or hereafter known to Motorola (Propel
waiving any duty on the part of Motorola to disclose such information);

               (l)  the insolvency of the Operating Companies or the payment in
full of all of the Guaranteed Obligations at any time or from time to time;

               (m)  the power or authority or lack thereof of the Operating
Companies to incur the OC Obligations being guaranteed or enhanced by Motorola
pursuant to the Motorola Commitments;

               (n)  the power or authority or lack thereof of Motorola to incur
the Guaranteed Obligations; or

               (o)  any statute of limitations affecting the liability of Propel
under this Agreement or the liability of Motorola under the Motorola Commitments
or the ability of Motorola to enforce this Agreement or any provision of the
Motorola Commitments.

          2.3  GUARANTY OF PAYMENT. Until each of the Beneficiaries has provided
written notice that the Guaranteed Obligations have been fully and properly
released or terminated, Propel agrees that this Agreement shall be an absolute,
present, continuing, unlimited, unconditional and irrevocable guaranty of
payment (and not of collection). Suit may be brought and maintained against
Propel by Motorola to enforce any liability, obligation or duty guaranteed
hereunder without joinder of any other person or entity. The liability of Propel
shall not be deemed to be waived, released, discharged, impaired or affected by:
any foreclosures, indulgence, or variation of terms of the Motorola Commitments
or the OC Obligations whether or not it might vary the risk of guaranty under
this Agreement, including, without limitation, any alteration, amendment,
acceleration, extension, modification, waiver or change concerning the amount of
time or

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manner of payment or performance of any of the Guaranteed Obligations or the OC
Obligations; any discharge or release of any of the obligations securing the
payment or performance thereof, whether or not in accordance with the respective
provisions thereof; or any bankruptcy, insolvency, reorganization, liquidation
or similar proceeding concerning the Operating Companies; the addition or
omission or delay in the enforcement of any right or remedy with respect to any
of the OC Obligations or with respect to this Agreement; or the receipt,
exchange, surrender or acquiescence in, any default with respect to any of the
Guaranteed Obligations or the OC Obligations.

     3.   INDEMNIFICATION.

          3.1  GENERALLY. Without limitation of any other obligations of Propel
or remedies of Motorola under this Agreement, Propel shall, to the fullest
extent permitted by law, indemnify, defend, save and hold harmless Motorola and
each of its Affiliates and their respective officers, directors, employees,
agents and advisors (each, an "INDEMNIFIED PARTY") from and against, and shall
pay on demand, 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
connection with or as a result of any action or inaction by any Indemnified
Party in connection with the Motorola Commitments; PROVIDED that Propel shall
not be required to indemnify an Indemnified Party for any claims, damages,
losses, liabilities, and expenses to the extent (but only to the extent)
resulting from such Indemnified Party's gross negligence or willful misconduct,
as determined by a court of competent jurisdiction or an arbitrator or mediator
pursuant to Sections 13.7, 13.8 and 13.9 herein.

          3.2  NO PUNITIVE DAMAGES. The Parties hereby also agrees that none of
the Indemnified Parties shall have any liability (whether direct or indirect, in
contract, tort or otherwise) to either Party or any of its Affiliates or any of
their respective officers, directors, employees, agents and advisors, and both
Parties hereby agree not to assert any claim against any Indemnified Party on
any theory of liability, for special, indirect, consequential or punitive
damages arising out of or otherwise relating to the Motorola Commitments or any
of the transactions contemplated by the Motorola Commitments.

          3.3  SURVIVAL. Without prejudice to the survival of any of the other
agreements under this Agreement or any of the other agreements under the
Motorola Commitments, the agreements and obligations of Propel contained in
Section 2.1 (solely with respect to enforcement expenses) and this Section 3,
and the obligations of Motorola contained in Section 7 shall survive the payment
in full of the Guaranteed Obligations and all of the other amounts payable under
this Agreement.

     4.   PAYMENTS FREE AND CLEAR OF TAXES, ETC. Any payment, indemnification or
reimbursement made by Propel hereunder shall be free and clear of all Taxes,
charges, fees, costs, expenses, or duties imposed by any Governmental Authority
and if any such Governmental Authority requires the payment and/or withholding
of any of the foregoing, Propel shall be liable for all of such Taxes, charges,
costs, expenses or duties.

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Propel shall pay each Guaranteed Obligation payable pursuant to this Agreement
in the currency in which such Guaranteed Obligation is denominated.

     5.   REPRESENTATIONS AND WARRANTIES. The Parties represent and warrants to
each other that each of the following statements is accurate and complete in all
material respects on and as of the Effective Date:

          5.1  this Agreement has been duly executed and delivered by each Party
and constitutes a legal, valid and binding obligation of each Party, enforceable
against each Party in accordance with its terms, except as limited by
bankruptcy, insolvency or other laws of general application relating to or
affecting the enforcement of creditors' rights generally;

          5.2  the execution, delivery and performance of this Agreement do not
(i) violate any provisions of law or any order of any court or other agency of
government (each, a "REQUIREMENT OF LAW"), (ii) contravene any provision of any
material contract or agreement to which either Party is a party or by which
either Party or its assets are bound (each, a "CONTRACTUAL OBLIGATION"), or
(iii) result in the creation or imposition of any lien, charge or encumbrance of
any nature upon any property, asset or revenue of either Party;

          5.3  all consents, approvals, orders and authorizations of, and
registrations, declarations and filings with, any governmental agency or
authority or other person or entity (including, without limitation, the
shareholders or partners of any entity), if any, which are required to be
obtained in connection with the execution and delivery of this Agreement or the
performance of either Party's obligations hereunder have been obtained, and each
is in full force and effect; and

          5.4  Neither Party is in violation of any Requirement of Law or
Contractual Obligation other than any violation the consequences of which would
reasonably be expected to have a material adverse effect on the other Party's
ability to perform its obligations hereunder.

     6.   PAYMENT AND REINSTATEMENT OF THE GUARANTEED OBLIGATIONS. Motorola
shall use commercially reasonable efforts to promptly apply amounts received by
Motorola from any source on account of a Guaranteed Obligation from a particular
Operating Company toward the payment of such Guaranteed Obligation of such
Operating Company. Motorola shall apply the foregoing amounts among principal,
interest, fees or costs in its sole discretion, and notwithstanding any payments
made by or for the account of Propel pursuant to this Agreement. Propel agrees
that, if at any time all or any part of any payment theretofore applied by
Motorola to any of the Guaranteed Obligations is or must be rescinded or
returned by Motorola for any reason whatsoever (including, without limitation,
the insolvency, bankruptcy or reorganization of the Operating Companies), such
Guaranteed Obligations shall, for the purposes of this Agreement and to the
extent that such payment is or must be rescinded or returned, be deemed to have
continued in existence notwithstanding such application by Motorola,

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and this Agreement shall continue to be effective or be reinstated, as the case
may be, as to such Guaranteed Obligations, all as though such application by
Motorola had not been made.

     7.   PERMITTED ACTIONS OF MOTOROLA.

          7.1  Notwithstanding anything to the contrary contained in this
Agreement, Motorola agrees that prior to taking any of the following actions, it
shall use commercially reasonable efforts to provide notice to Propel of
Motorola's intent to take such actions:

               (a)  make any payment or perform any obligation under any of the
Motorola Commitments;

               (b)  exercise any right or remedy (or take other action) against
any Operating Company or any customer or other third party contracting with any
Operating Company in connection with any OC Obligation;

               (c)  make any agreement with any Person to amend, modify or
otherwise adjust the terms and conditions of any Motorola Commitment, any OC
Obligation or any agreement relating to any Motorola Commitment or any OC
Obligation;

               (d)  amend, modify, or supplement in any manner the Motorola
Commitments or any agreement relating thereto, including without limitation, any
agreement relating to the OC Obligations, or compromise, settle or waive any
obligations or agreements of any Person in respect of any OC Obligation;

               (e)  obtain a security interest in any assets of the Operating
Companies or any third party (other than Propel) to secure any of the
obligations of the Operating Companies under the Motorola Commitments or Propel
hereunder;

               (f)  obtain the primary or secondary obligation of any obligor or
obligors, in addition to Propel or its Operating Companies, with respect to any
of the Guaranteed Obligations; or

               (g)  release, waive, compromise, alter or exchange, its security
interest in, or surrender, release or permit any substitution or exchange for,
all or any part of any collateral now or hereafter securing any of the
Guaranteed Obligations;

          7.2  Without limiting the generality of any other provision of this
Agreement, Motorola may at any time, for time to time, in its sole discretion
and without notice to Propel:

               (a)  release, waive or compromise any obligation of Propel
hereunder;

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               (b)  waive, ignore or forbear from taking action or otherwise
exercising any of its default rights or remedies with respect to any default by
any of the Operating Companies under or in connection with the Motorola
Commitments or any agreement relating thereto, including without limitation, any
agreement relating to the OC Obligations;

               (c)  upon demand for payment or performance having been made upon
Motorola, demand payment or performance of such Guaranteed Obligation from
Propel at any time or from time to time, whether or not Motorola shall have
exercised any of its rights or remedies with respect to any property securing
such Guaranteed Obligation or any obligation hereunder or proceeded against any
other obligor primarily or secondarily liable for payment or performance of any
of the Guaranteed Obligations; and

               (d)  release, waive or compromise, extend or renew (for one or
more periods whether or not longer than the original period) any obligation of
any nature of any of the Operating Companies with respect to any of the
Guaranteed Obligations or the OC Obligations.

     8.   SPECIFIC WAIVERS. Without limiting the generality of any other
provision of this Agreement, Propel hereby expressly waives, to the extent
permitted by law:

          8.1  notice of the acceptance by Motorola of this Agreement;

          8.2  notice of the existence, creation, payment, nonpayment,
performance or nonperformance of all or any of the Guaranteed Obligations;

          8.3  presentment, demand, notice of dishonor, protest, notice of
protest and all other notices whatsoever with respect to the payment or
performance of the Guaranteed Obligations or the amount thereof or any payment
or performance by Propel hereunder;

          8.4  all diligence in collection or protection of or realization upon
the Guaranteed Obligations or any part thereof, or any obligation hereunder or
any security for or guaranty of any of the foregoing;

          8.5  any right to direct or affect the manner or timing of Motorola's
enforcement of its rights or remedies under the Motorola Commitments or
hereunder;

          8.6  any and all defenses which would otherwise arise upon the
occurrence of any event or contingency described in Section 6 hereof or upon the
taking of any action by Motorola permitted hereunder;

          8.7  any defense, right of set-off, claim or counterclaim whatsoever
and any and all other rights, benefits, protections and other defenses available
to Propel now or at any time hereafter;

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          8.8  all other principles or provisions of law, if any, that conflict
with the terms of this Agreement, including, without limitation, the effect of
any circumstances that may or might constitute a legal or equitable discharge of
Propel; and

          8.9  all rights to revoke this Agreement at any time, and all rights
to revoke any agreement executed by Propel at any time to secure the payment and
performance of Propel's obligations under this Agreement.

     9.   SUBORDINATION.

          9.1  GENERALLY. Propel hereby subordinates any and all indebtedness of
the Operating Companies to Propel to the full and prompt payment and performance
of all of the Guaranteed Obligations. Propel agrees that Motorola shall be
entitled to receive payment of all Guaranteed Obligations prior to Propel's
receipt of payment of any amount of any indebtedness resulting from subrogation
rights exercised by Propel against the Operating Companies with respect to
payments made by Propel hereunder. Any payments on such indebtedness to Propel,
if Motorola so requests, shall be collected, enforced and received by Propel, in
trust, as trustee for Motorola and shall be paid over to Motorola on account of
the Guaranteed Obligations, but without reducing or affecting in any manner the
liability of Propel under the other provisions of this Agreement. Motorola is
authorized and empowered, but not obligated, in its discretion, to require
Propel (i) to collect and enforce, and to submit claims in respect of, any
indebtedness of the Operating Companies to Propel, and (ii) to pay any amounts
received on such indebtedness to Motorola for application to the Guaranteed
Obligations.

          9.2  UPON DEFAULT BY PROPEL. Without limiting the generality of
Section 9.1 above, upon the occurrence and during the continuance of any default
by Propel hereunder not cured to Motorola's reasonable satisfaction within five
(5) days of the delivery by Motorola to Propel of written notice of such
default, Propel agrees that Motorola shall be entitled to receive payment from
Propel, Inc. of all Guaranteed Obligations then due and payable prior to
Propel's receipt of payment of any amount of any indebtedness of the Operating
Companies to Propel, including without limitation, any dividends, distributions
or repayments of shareholder loans. Any payments on such indebtedness to Propel,
if Motorola so requests, shall be collected, enforced and received by Propel, in
trust, as trustee for Motorola and shall be paid over to Motorola on account of
the Guaranteed Obligations, but without reducing or affecting in any manner the
liability of Propel under the other provisions of this Agreement. Motorola is
authorized and empowered, but not obligated, in its discretion, to require
Propel (i) to collect and enforce, and to submit claims in respect of, any
indebtedness of each of the Operating Companies to Propel, and (ii) to pay any
amounts received on such indebtedness to Motorola for application to the
Guaranteed Obligations of the Operating Company from which Propel received
payment. Upon the occurrence and during the continuance of any default by Propel
hereunder not cured to Motorola's reasonable satisfaction within five (5) days
of the delivery by Motorola to Propel of written notice of such default,
Motorola is authorized and empowered, but not obligated, in its discretion in
the name of Propel, to

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collect and enforce, and to submit claims in respect of, any indebtedness of
each of the Operating Companies to Propel and to apply any amounts received
thereon to the Guaranteed Obligations of the Operating Company from which Propel
received payment.

     10.  SUBROGATION. Absent the written consent of Motorola, which shall not
be unreasonably withheld, Propel shall not exercise any rights which it may
acquire by way of subrogation under this Agreement with respect to a particular
Operating Company, by any payment hereunder or otherwise, until all of the
Guaranteed Obligations with respect to such Operating Company have been
irrevocably paid in full, in cash, and Motorola shall have no further
obligations to such Operating Company under the applicable Motorola Commitments.
If any amount shall be paid to Propel on account of such subrogation rights at
any other time, such amount shall be held in trust for the benefit of Motorola
and shall be forthwith paid to Motorola to be credited and applied to the
Guaranteed Obligations of the particular Operating Company making such payment,
whether matured or unmatured, in such manner as Motorola shall determine in its
sole discretion on a reasonable basis.

     11.  ASSIGNMENT OF MOTOROLA'S RIGHTS. Motorola may, from time to time, with
notice to Propel, assign or transfer any or all of the Guaranteed Obligations or
any interest therein and, notwithstanding any such assignment or transfer of the
Guaranteed Obligations or any subsequent assignment or transfer thereof, the
Guaranteed Obligations shall be and remain the Guaranteed Obligations for the
purpose of this Agreement. Each and every immediate and successive assignee or
transferee of any of the Guaranteed Obligations or of any interest therein
shall, to the extent of such party's interest in the Guaranteed Obligations, be
entitled to the benefits of this Agreement to the same extent as if such
assignee or transferee were Motorola; provided, however, that unless Motorola
shall otherwise consent in writing, Motorola shall have an unimpaired right,
prior and superior to that of any such assignee or transferee, to enforce this
Agreement for its own benefit as to those of the Guaranteed Obligations which
Motorola has not assigned or transferred.

     12.  FINANCIAL CONDITION OF THE OPERATING COMPANIES.

          12.1 NO RELIANCE ON MOTOROLA. Propel represents and warrants that it
is fully aware of the financial condition of the Operating Companies, and Propel
delivers this Agreement based solely upon Propel's own independent investigation
of the Operating Companies' financial condition and in no part upon any
representation or statement of Motorola with respect thereto. Propel further
represents and warrants that it is in a position to and hereby does assume full
responsibility for obtaining such additional information concerning the
Operating Companies' financial condition as Propel may deem material to its
obligations hereunder, and Propel is not relying upon, nor expecting Motorola to
furnish it any information in Motorola's possession concerning the Operating
Companies' financial condition or concerning any circumstances bearing on the
existence or creation, or the risk of nonpayment or nonperformance of the
Guaranteed Obligations.

                                       12
<PAGE>

          12.2 WAIVER. Propel hereby waives any duty on the part of Motorola to
disclose to Propel any facts it may now or hereafter know about the Operating
Companies, regardless of whether Motorola has reason to believe that any such
facts materially increase the risk beyond that which Propel intends to assume or
has reason to believe that such facts are unknown to Propel.

          12.3 ACKNOWLEDGEMENT. Propel hereby knowingly accepts the risk
encompassed within this Agreement which includes, without limitation, the
possibility that the Operating Companies will contract for additional
indebtedness for which Propel may be liable hereunder after the Operating
Companies' financial condition or ability to pay its lawful debts when they fall
due has deteriorated.

     13.  MISCELLANEOUS.

          13.1. ENTIRE AGREEMENT. This Agreement and all other Exhibits and
Schedules attached hereto and thereto constitute the entire agreement between
the parties with respect to the subject matter hereof and thereof and supersede
all prior written and oral and all contemporaneous oral agreements and
understandings with respect to the subject matter hereof and thereof. This
Agreement contains the complete understanding of the parties hereto with respect
to the subject matter herein.

          13.2. GOVERNING LAW. This Agreement shall be governed by and construed
in accordance with the laws of the State of Illinois regardless of the laws that
might otherwise govern under principles of conflicts of laws applicable thereto.

          13.3. NOTICES. All notices and other communications hereunder shall be
in writing and shall be deemed to have been duly given when delivered in person,
by telecopy with answer back, by express or overnight mail delivered by a
nationally recognized air courier (delivery charges prepaid), or by registered
or certified mail (postage prepaid, return receipt requested) to the respective
parties as follows:

          if to Motorola:

          Motorola, Inc.
          1303 East Algonquin Road
          Schaumburg, Illinois 60196
          Attention: General Counsel
          Telecopy: (847) 576-3628

          with a copy to:

          Motorola, Inc.
          1303 East Algonquin Road
          Schaumburg, Illinois 60196
          Attention: Chief Financial Officer and Chief Accounting Officer
          Telecopy: (847) 576-4768

                                       13
<PAGE>

          if to Propel or its Subsidiaries:

          Propel, Inc.
          425 Martingale Road
          18th Floor
          Schaumburg, Illinois 60173
          Attention: General Counsel
          Telecopy: (847) 435-3916

          with a copy to:

          Propel, Inc.
          425 North Martingale Road
          18th Floor
          Schaumburg, Illinois 60173
          Attention: Chief Financial Officer
          Telecopy: (847) 435-3916

or to such other address as the party to whom notice is given may have
previously furnished to the others in writing in the manner set forth above. Any
notice or communication delivered in person shall be deemed effective on
delivery. Any notice or communication sent by telecopy shall be deemed effective
on the day at the place such notice or communication is received if confirmed by
return facsimile. Any notice or communication sent by air courier shall be
deemed effective on the day at the place at which such notice or communication
is received if delivery is confirmed by the air courier. Any notice or
communication sent by registered or certified mail shall be deemed effective on
the fifth Business Day at the place from which such notice or communication was
mailed following the day on which such notice or communication was mailed.

          13.4. PARTIES IN INTEREST. This Agreement shall be binding upon and
inure solely to the benefit of each party hereto and their legal representatives
and successors, and each Affiliate of the parties hereto, and nothing in this
Agreement, express or implied, is intended to confer upon any other Person any
rights or remedies of any nature whatsoever under or by reason of this
Agreement. In addition and notwithstanding anything to the contrary contained in
this Agreement or in any other document, instrument or agreement between or
among any of Motorola, the Operating Companies, Propel or any third party, the
obligations of Propel with respect to the Guaranteed Obligations shall be joint
and several with any other person or entity that now or hereafter executes a
guaranty of any of the Guaranteed Obligations separate from this Agreement.

          13.5. COUNTERPARTS. This Agreement may be executed in counterparts,
each of which shall be deemed to be an original but all of which shall
constitute one and the same agreement.

          13.6. Reserved.

                                       14
<PAGE>

          13.7. JURISDICTION. In the event a Dispute under this Agreement is to
be submitted to judicial proceedings, each of Motorola and Propel consents to
the exclusive jurisdiction of the federal or state courts of Illinois for any
such legal action, suit or proceeding and agrees that any such action, suit, or
proceeding may be brought only in such courts. Each of Motorola and Propel
further waives any objection to the laying of venue for any suit, action or
proceeding in such courts. Each party agrees to accept and acknowledge service
of any and all process that may be served in any suit, action or proceeding.
Each party agrees that any service of process upon it mailed by registered or
certified mail, return receipt requested to such party at the address provided
in Section 16.3 above will be deemed in every respect effective service of
process upon such party in any such suit, action or proceeding. EACH PARTY
AGREES TO WAIVE ANY RIGHT IT MIGHT HAVE TO A TRIAL BY JURY IN ANY SUCH SUIT,
ACTION OR PROCEEDING.

          13.8. AMICABLE RESOLUTION. (a) Motorola and Propel mutually desire
that friendly collaboration will develop between them. Accordingly, they will
try to resolve in an amicable manner all disagreements and misunderstandings
connected with their respective rights and obligations under this Agreement,
including any amendments hereto. In furtherance thereof, in the event of any
dispute or disagreement between Motorola and Propel as to the interpretation of
any provision of this Agreement executed in connection herewith (or the
performance of obligations hereunder or thereunder), the matter, upon written
request of either party, will be referred for resolution to a steering committee
established pursuant to Section 5.7 of the Master Separation Agreement (the
"STEERING COMMITTEE"). The Steering Committee will have two members, one of
which will be appointed by Motorola and one of which will be appointed by
Propel. The initial members of the Steering Committee will be the individuals
named on Schedule 5.7 of the Master Separation Agreement. Each of Motorola and
Propel will use its good faith reasonable efforts to avoid replacing the initial
members of the Steering Committee with another of their representatives for the
first year after the Effective Date. Thereafter, Motorola and Propel will, to
the extent practicable, honor the other's reasonable objections to any
replacements of Steering Committee members. While any person is serving as a
member of the Steering Committee, such person may not designate any substitute
or proxy for purposes of attending or voting at a Steering Committee meeting.
The Steering Committee will make every good faith effort to promptly resolve all
disputes or disagreements referred to it. Upon a unanimous vote, Steering
Committee decisions will be binding on Motorola and on Propel. If the Steering
Committee does not agree to a resolution of the dispute or disagreement within
90 days after the reference of the matter to it, each of Motorola and Propel
will be free to exercise the remedies available to it under applicable law,
subject to Section 13.9. Notwithstanding anything to the contrary in this
Section 13.8, no amendment to the terms of this Agreement will be effected
except in writing signed by an authorized officer of both parties. The Steering
Committee will be self-regulating.

     (b)  Between the Effective Date and the first anniversary of the Effective
Date the Steering Committee will hold meetings every six weeks on dates
established at the

                                       15
<PAGE>

organizational meeting of the Steering Committee, which will be held as promptly
as practicable after the Effective Date. Such meeting dates may be rescheduled
by the Steering Committee if it becomes reasonably impracticable to hold such a
meeting. After the first anniversary of the Effective Date, the Steering
Committee will hold regularly scheduled meetings as determined by the Steering
Committee.

     13.9 MEDIATION AND ALTERNATE DISPUTE RESOLUTION. (a) To the extent that any
misunderstanding or dispute with respect to one or more of the terms of this
Agreement ("DISPUTE") cannot be resolved in a friendly manner as set forth in
Section 13.8, the parties intend that such Dispute be resolved by an alternative
dispute resolution process ("ADR"), which shall require the escalation of any
Dispute, first, to the level of one senior executive of each of Motorola and
Propel (the "Senior Officers") and then to the head of Motorola's Communications
Enterprise (or its successor) and the CEO of Propel in an attempt to resolve any
such Dispute by negotiation. If the Senior Officers and/or the head of Motorola'
s Communications Enterprise and the Propel CEO are unable to resolve the Dispute
within ten days after the matter is referred to them, either Motorola or Propel
may demand mediation of the Dispute by written notice to the other. The two
parties shall select a mediator within ten days after the demand and neither of
the parties may unreasonably withhold consent to the selection of the mediator
and both parties shall share the cost of mediation equally. The parties may
agree to replace mediation with some other form of non-binding ADR such as
neutral fact finding or mini-trial. Nothing in this paragraph shall prevent
either Motorola or Propel from commencing formal litigation proceedings if (i)
good faith efforts to resolve the Dispute under these procedures have been
unsuccessful, or (ii) any delay resulting from efforts to mediate such dispute
could result in serious and irreparable injury to either Motorola or Propel. The
use of any ADR procedures will not be construed under the doctrines of laches,
waiver or estoppel to affect adversely the rights of either party.

     (b)  Each of Motorola and Propel will bear its costs of mediation or ADR,
but both parties shall share the costs of the mediation or ADR equally.

          13.10. SEVERABILITY. If any term or other provision of this Agreement
is invalid, illegal or incapable of being enforced by any rule of law or public
policy, all other conditions and provisions of this Agreement shall nevertheless
remain in full force and effect so long as the economic or legal substance of
the transactions contemplated hereby is not affected in any manner materially
adverse to any party. Upon such determination that any term or other provision
is invalid, illegal or incapable of being enforced, the parties hereto shall
negotiate in good faith to modify this Agreement so as to effect the original
intent of the parties as closely as possible in an acceptable manner to the end
that transactions contemplated hereby are fulfilled to the fullest extent
possible.

          13.11. FAILURE OR INDULGENCE NOT WAIVER; REMEDIES CUMULATIVE. No
failure or delay on the part of any party hereto in the exercise of any right
hereunder shall impair such right or be construed to be a waiver of, or
acquiescence in, any breach of any representation, warranty or agreement herein,
nor shall any single or partial exercise of any such right preclude other or
further exercise thereof or of any other right. All rights

                                       16
<PAGE>

and remedies existing under this Agreement are cumulative to, and not exclusive
of, any rights or remedies otherwise available.

          13.12. AMENDMENT. No change, amendment or waiver will be made to this
Agreement except by an instrument in writing signed on behalf of each of the
parties to such agreement.

          13.13. INTERPRETATION. All references herein to Operating Companies
shall be deemed to include their successors and assigns, and all references
herein to Propel shall be deemed to include Propel and Propel's successors and
assigns. The headings contained in this Agreement, in any Exhibit or Schedule
hereto and in the table or contents to this Agreement are for reference purposes
only and shall not affect in any way the meaning or interpretation of this
Agreement. Any capitalized term used in any Schedule or Exhibit but not
otherwise defined therein, shall have the meaning assigned to such term in this
Agreement. When a reference is made in this Agreement to an Article or a
Section, Exhibit or Schedule, such reference shall be to an Article or Section
of, or an Exhibit or Schedule to, this Agreement unless otherwise indicated. The
Schedules and Exhibits attached hereto or referred to herein are an integral
part of this Agreement and are hereby incorporated into this Agreement and made
a part hereof as if set forth in full herein. After the Effective Date, the
Propel Business shall be deemed to be the business of Propel and its
Subsidiaries.

          13.14 NO CROSS-COLLATERALIZATION. Notwithstanding anything set forth
in this Agreement to the contrary, nothing contained herein shall result in any
Operating Company being liable, directly or indirectly, for the obligations or
liabilities of any other Operating Company or of Propel.

          13.15. ADVICE OF COUNSEL. Propel acknowledges that Propel has either
obtained the advice of counsel or has had the opportunity to obtain such advice
in connection with the terms and provisions of this Agreement.

          13.16. PROPEL'S RIGHT TO ASSERT A CLAIM FOR BREACH OF THIS AGREEMENT.
Notwithstanding anything contained herein to the contrary, Propel shall have the
right to assert claims in good faith based upon material breaches by Motorola of
this Agreement in a court of competent jurisdiction pursuant to Section 13.7
herein or before an arbitrator pursuant to Section 13.8. Notwithstanding the
foregoing right of Propel, any alleged or actual breach by Motorola hereunder
shall in no manner and under no circumstances create any claim, defense, right
of set-off or any other right (except for counterclaims resulting from any
separate proceeding brought by Propel pursuant to this Section 13.16) for Propel
with respect to its payment and performance obligations under this Agreement,
and such obligations of Propel shall be unconditional, absolute and continuing
as set forth in Sections 2.1 and 2.2 herein.

          13.17. TERM. Without limiting the generality of any other provision of
this Agreement, including Section 3.3 hereof, this Agreement shall be effective
upon the

                                       17
<PAGE>

Effective Date and the obligations of Propel shall continue until the
Beneficiaries each acknowledge in writing that the Guaranteed Obligations have
been fully and properly paid, released or terminated.

                            [signature pages follow]

                                       18
<PAGE>

     IN WITNESS WHEREOF, Propel has caused this Guaranty and Indemnification
Agreement to be duly executed and delivered by the proper and duly authorized
officer as of the day and year first above written.

PROPEL, INC.

By:
     ----------------------------------------------

Printed Name:
               ------------------------------------

Title:
          -----------------------------------------

Accepted By:

MOTOROLA, INC.

By:
     ----------------------------------------------

Printed Name:
               ------------------------------------

Title:
          -----------------------------------------

                                       19
<PAGE>

                                   SCHEDULE I

                                       20<PAGE>

                                                                   EXHIBIT 10.17
                                     FORM OF
                                    SUBLEASE

         THIS SUBLEASE (the "SUBLEASE") made as of this ______ day of
___________, 2000 by and between MOTOROLA, INC., a Delaware corporation,
("SUBLESSOR") and PROPEL, INC., a Delaware corporation, and subsidiary of
Motorola, Inc. ("Sublessee").

                              W I T N E S S E T H:

         WHEREAS, WOODFIELD REALTY HOLDING COMPANY, LLC, a Delaware limited
liabilaity company and successor in interest to WOODFIELD CORPORATE CENTER JOINT
VENTURE, an Illinois General Partnership, ("LANDLORD"), entered into that
certain Lease Agreement dated June 17, 1992, 1994 (the "PRINCIPAL LEASE"),
whereby Sublessor's predecessor in interest MOTOROLA NORTEL Communication Co., a
Delaware general partnership, as Tenant, leased from Landlord those certain
premises, specifically Suites 1700, 1800 and 1900 located in the building
commonly known as the 425 Woodfield Corporate Center and located at 425 North
Martingale Road, Schaumburg, Illinois 60173, as more particularly described in
the Principal Lease and referred to therein as "DEMISED PREMISES", a true,
correct and complete copy of which is attached hereto as EXHIBIT A and
incorporated herein by reference; and

         WHEREAS, MOTOROLA NORTEL Communication Co. was entitled to assign the
Lease to Motorola, Inc. without the consent of Landlord and such assignment did
occur by First Lease Amendment dated May 19, 1995, whereby Motorola, Inc.
succeeded to all the rights, duties and obligations of the Tenant under the
Principal Lease; and

         WHEREAS, the Principal Lease was further amended by the Second Lease
Amendment dated October 14, 1996 and the Third Lease Amendment dated September
2, 1999; and

         WHEREAS, Sublessee desires to sublease from Sublessor a portion of the
premises and Sublessor desires to sublease to Sublessee a portion of the
premises upon the terms and conditions hereinafter set forth;

         NOW, THEREFORE, for and in consideration of the mutual covenants
contained herein, Sublessor and Sublessee hereby agree as follows:

         1.       PREMISES. Sublessor hereby subleases to Sublessee and
Sublessee hereby subleases from Sublessor for the Term (as hereinafter defined),
at the rental and upon all of the conditions and covenants set forth herein, a
portion of the Demised Premises known as the Suite 1800 as identified on EXHIBIT
B attached hereto (the "SUBLEASE PREMISES.") Sublessor and Sublessee stipulate
that the Premises comprise 19,546 rentable square feet as of the date of this
Sublease.

<PAGE>

         Sublessor and Sublessee specifically agree that Sublessor has the right
to partition the Demised Premises of which the Sublease Premises is a part to
allow Sublessor to occupy the remainder of such Demised Premises (not the
Sublease Premises) separately and distinctly from Sublessee.

         2.       SUBLEASE TERM. The term of this Sublease (the "TERM") shall
commence on _________________, 2000 (the "COMMENCEMENT DATE") and shall
terminate on November 5, 2002.

     Notwithstanding anything to the contrary contained in this Sublease or
the Principal Lease, Sublessee shall not have the right to renew or extend
this Sublease or the Principal Lease beyond November 5, 2002. In the event
Sublessee desires to extend its occupancy of the Sublease Premises beyond
such date, Sublessee must enter into its own lease agreement with Landlord.

         3.       RENTAL. Sublessee shall pay to the Sublessor monthly base rent
in advance in the amount of Twenty Five Thousand Two Hundred Forty Six and
92/100 Dollars ($25,246.92) ("BASE RENT") beginning with the Commencement Date
and on the first day of each and every calendar month thereafter at such place
or places as Sublessor may designate in writing from time to time, without
set-off or deduction. Sublessee shall also pay its prorata share of all
Additional Rent as defined in the Principal Lease, including, but not limited to
operating expenses and taxes.

         Sublessee shall also pay Interest at the Default Rate (as defined
below) from the due date of each payment of Rent until paid. As used herein, the
term "DEFAULT RATE" shall mean the lower of (i) the highest lawful rate or (ii)
a rate of interest equal to four percent (4%) in excess of the Prime Rate (as
hereinafter defined). As used herein, the term "PRIME RATE" shall mean that rate
of interest announced by Bank One from time to time for ninety (90) day
unsecured commercial loans to its customers of the highest credit rating,
changing automatically and simultaneously with each change in the Prime Rate
made by Bank One from time to time.

         In the event the Commencement Date is a date other than the first day
of a calendar month, or the date of termination of this Sublease is a date other
than the last day of a calendar month, Base Rent and Additional Rent for such
partial month shall be prorated on a daily basis. Sublessee shall pay its first
month's Base Rent on the Commencement Date.

         Sublessee's obligation to pay all rent shall be independent of every
other covenant set forth in this Sublease, and Base Rent shall be paid without
notice or demand and without abatement, deduction, discount, counterclaim or
set-off.

         4.       OBLIGATIONS UNDER THE PRINCIPAL LEASE. With respect to the
Premises, Sublessee hereby agrees that it shall be subject to and bound by all
of the terms, provisions and covenants of the Principal Lease, which terms,
provisions and covenants are incorporated herein by reference. Except as
otherwise provided herein, Sublessee assumes and agrees to perform each of the
duties and obligations with respect to the Sublease Premises required by such
Principal Lease to be performed by Sublessor as tenant thereunder. Sublessee
shall not take any action or fail to take any action in connection with the
Sublease Premises as a result of which Sublessor would be in violation of any of
the provisions of the Principal Lease. Sublessee agrees to indemnify, defend,
protect and hold Sublessor harmless from any and all loss, cost, damage,
liability or expense

<PAGE>

(including attorneys' fees) incurred by Sublessor as a result of Sublessee's
failure to perform or adhere to the duties, obligations and provisions with
respect to the Sublease Premises provided for or imposed upon Sublessor, as
tenant, by the Principal Lease. For the purposes of this Sublease, whenever the
terms of the Principal Lease provide for the consent or approval of Landlord,
Sublessee shall obtain the consent or approval of both Landlord and Sublessor.
In the event Sublessee shall fail to obtain the consent or approval of both
Landlord and Sublessor, Sublessee shall not be entitled to proceed with the act
or thing with respect to which such consent or approval was sought.

         5.       SUBLESSOR'S OBLIGATIONS. Sublessee shall have no remedy
against Sublessor for the enforcement of any of the terms, provisions, duties or
obligations of Landlord under the Principal Lease. In the event Landlord shall
fail to perform its duties or obligations under the Principal Lease, Sublessee
shall promptly notify Sublessor thereof in writing and Sublessee may request
Sublessor to attempt to procure the performance of such duties or obligations of
Landlord (for the purpose of this paragraph, Sublessor's "attempt to procure the
performance" shall mean and be limited solely to the transmission of notices
which are contemplated to be given under the terms of the Principal Lease). If
such request is made and Sublessor fails to attempt to procure the performance
of Landlord's duties and obligations within a reasonable period thereafter, then
Sublessee shall have the right in its own name or in Sublessor's name, to
attempt to procure such performance by Landlord, at the sole cost and expense of
Sublessee. Notwithstanding anything contained herein to the contrary, in no
event shall Sublessee attempt to procure such performance so as to either (i)
create a default by Sublessor as tenant under the Principal Lease, or (ii) cause
a termination or modification of the Principal Lease. Sublessee shall promptly
inform Sublessor, in writing, from time to time, of all developments in
connection with any such claim, action or proceeding against Landlord by
Sublessee, and Sublessor shall have the right, but not the duty, to participate
in any such proceedings.

         6.       USE. The Premises shall be used by the Sublessee solely and
exclusively for the purposes stated in the Principal Lease. Any use of the
Premises by the Sublessee for any other purpose shall constitute a continuing
breach of this Sublease and Sublessor may, at its option, declare this Sublease
terminated and be released of all obligations hereunder, without prejudice to
its other remedies at law or in equity, whether or not granted in this Sublease.
Sublessee shall comply with all applicable laws and regulations, including
without limitation any and all environmental laws and regulations, governing the
Premises and Sublessee's use thereof, any rules and regulations imposed by the
Landlord or Sublessor.

         7.       CONDITION OF PREMISES; FIXTURES AND EQUIPMENT. No promise of
the Sublessor to alter, remodel or improve the Sublease Premises or no
representation respecting the condition of the Sublease Premises has been made
by the Sublessor to the Sublessee. On the Commencement Date, Sublessee shall
accept the Sublease Premises AS-IS, based on the condition of the Sublease
Premises as of the date of this Sublease, ordinary wear and tear excepted.
Sublessee shall keep and maintain the Sublease Premises and all improvements
thereto, in the manner and in the condition stated in the Principal Lease. Any
fixtures or improvements (other than trade fixtures) installed in or placed upon
the Sublease Premises as of the Commencement Date shall remain on the Sublease
Premises and shall remain the property of Sublessor or Landlord (as provided in
the Principal

<PAGE>

Lease), notwithstanding Sublessee's use thereof. At the termination of this
Sublease, the Sublease Premises and any such fixtures and improvements shall be
restored to their condition as of the Commencement Date of this Sublease,
ordinary wear and tear excepted, and Sublessee shall comply with the terms of
the Principal Lease in connection with Sublessee's surrender of the Sublease
Premises.

         8.       DEFAULT BY SUBLESSEE. All of the following events shall be
deemed an "Event of Default" hereunder:

                  (a)      failure of Sublessee to pay the Base Rent, Additional
         Rent or other sums due hereunder as and when the same shall be due and
         payable, if such failure is not cured within five (5) days of such due
         date;

                  (b)      failure of Sublessee to perform any of the
         obligations on its part herein required to be performed, if such
         failure is not cured within ten (10) days after notice from Sublessor
         to Sublessee;

                  (c)      the existence of a hazardous condition and the
         failure to cure the same immediately upon written notice from Sublessor
         to Sublessee;

                  (d)      Sublessee vacates or abandons the Premises or fails
         to take possession of the Premises when available for occupancy (the
         transfer of a substantial part of the operations, business and
         personnel of the Sublessee to some other location being deemed, without
         limiting the meaning of the terms "vacates or abandons," to be a
         vacation or abandonment of the Premises within the meaning of this
         subclause), No such vacation or abandonment of the Premises shall be
         considered to be a default under the Sublease, if Sublessee continues
         to pay Base Rent, Additional Rent and all other sums due under the
         Sublease when due;

                  (e)      any voluntary or involuntary petition or similar
         pleading under any bankruptcy act or under any Federal or State law
         seeking reorganization or arrangement with creditors or adjustment of
         debts, is filed by or against Sublessee, or if any such petition or
         pleading is involuntary, and it is not adjudicated favorably to
         Sublessee within forty-five (45) days after its filing;

                  (f)      Sublessee admits its inability to pay its debts, or
         if a receiver, trustee or other court appointee or nominee is appointed
         for Sublessee or all or a substantial part of Sublessee's property;

                  (g)      Sublessee makes an assignment for the benefit of
         creditors, or if any proceedings are filed by or against Sublessee to
         declare Sublessee insolvent or unable to meet its debts;

                  (h)      Sublessee fails to observe or perform any of the
         covenants in respect of assignment and subletting set forth in
         Paragraph 16;

<PAGE>

                  (i)      the levy upon, under execution or the attachment by
         legal process, of the leasehold interest of Sublessee or the filing or
         creation of a lien in respect of such leasehold interest; or

                  (j)      the misrepresentation by Sublessee of, or failure of
         Sublessee to disclose to Sublessor, a material fact in any document,
         financial statement, leasing application or other instrument delivered
         or disclosed to Sublessor in connection with the Sublease.

         9.       REMEDIES. If an Event of Default occurs, Sublessor may
exercise any one or more of the following rights and remedies in addition to any
other rights and remedies at law or in equity:

                  (a)      terminate this Sublease and the Term created hereby,
         and Sublessee's right to possession of the Premises; or

                  (b)      without terminating this Sublease, terminate
         Sublessee's right to possession of the Premises and repossess the
         Premises by forcible entry and detainer suit, by taking peaceful
         possession or otherwise.

Upon any termination of this Sublease, Sublessee shall surrender possession and
vacate the Sublease Premises immediately and deliver possession thereof to
Sublessor and hereby grants to Sublessor full and free license to reenter the
Sublease Premises, or any part thereof, and retake possession thereof, with or
without process of law, and to remove Sublessee and any others who may be
occupying or within the Sublease Premises and to remove any and all property
therefrom, using such force as may be necessary, without being deemed in any
manner guilty of trespass, eviction, forcible entry or detainer or conversion of
property, and without relinquishing Sublessor's rights to Rent or any other
right given to Sublessor hereunder or by operation of law.

If Sublessor shall terminate Sublessee's right of possession without terminating
this Sublease, the obligation of Sublessee to pay all Rent during the full term
hereof shall not be deemed to be waived, released or terminated and Sublessee
shall pay to Sublessor a sum equal to the entire amount of Rent specified in
this Sublease for the balance of the Term plus any other sums then due Sublessor
hereunder. Upon and after entry into possession without termination of this
Sublease, Sublessor may, at its discretion, either itself occupy the whole or
any part of the Sublease Premises or use reasonable efforts to relet same upon
such terms and conditions and for such rent as Sublessor may in its discretion
deem proper. In such case, Sublessor may make such repairs, alterations and
additions in or to the Sublease Premises, and redecorate the same to the extent
deemed by Sublessor necessary and desirable, and Sublessee shall, upon demand,
pay the cost thereof, together with Sublessor's expenses of reletting. Upon each
such reletting, all rentals and other sums received by Sublessor from such
reletting shall be applied as follows: first, to the payment of any indebtedness
other than Rent due hereunder from Sublessee to Sublessor; second, to the
payment of any costs and expenses of such reletting, including brokerage fees
and attorney's fees, and of costs of such alterations and repairs; third, to the
payment of Rent and other charges due and unpaid hereunder; and the residue, if
any, shall be retained by Sublessor. Sublessee shall not be entitled to any
rents received by Sublessor in excess of the Rent provided for this Sublease.

<PAGE>

If such rentals and other sums received from such reletting during any month be
less than that to be paid during that month by Sublessee hereunder, Sublessee
shall pay such deficiency to Sublessor. Such deficiency shall be calculated and
paid monthly. No such re-entry or taking possession of the Sublease Premises by
Sublessor shall be construed as an election on its part to terminate this
Sublease unless a written notice of such intention be given to Sublessee or
unless the termination thereof be decreed by a court of competent jurisdiction.
Notwithstanding any such reletting without termination, Sublessor may at any
time hereafter elect to terminate this Sublease.

Should Sublessor at any time terminate this Sublease for any default, in
addition to any other remedies it may have, it may recover from Sublessee all
damages it may incur by reason of such default, including the cost of recovering
the Sublease Premises, the cost of repairs, remodeling and alterations necessary
to relet the Sublease Premises, attorneys' fees, any other sum of money and
damages due and to become due to Sublessor from Sublessee, all of which amounts
shall be immediately due and payable from Sublessee to Sublessor.

In the event of any entry and taking possession of the Sublease Premises,
Sublessor may, at its option, remove therefrom all or any personal property
located therein and may place the same in storage at a commercial warehouse for
the account of, and at the risk and expense of, Sublessee and/or the owner or
owners thereof, but Sublessor shall in no event be liable to Sublessee for any
damage thereto.

Sublessee hereby waives any and all claims for any damage or loss thereto.
Sublessee hereby grants to Sublessor a lien, subject to any first liens, now and
hereafter, upon all of the personal property of Sublessee (whether or not
affixed to the real estate) situated upon the Premises for Rent and other
charges due hereunder to Sublessor by Sublessee.

         10.      COSTS AND EXPENSES. In case suit shall be brought by Sublessor
for recovery of possession of the Sublease Premises, for the recovery of Rent,
or any other amount due under the provisions of this Sublease, or because of the
breach of any other covenant contained herein, Sublessee shall pay to Sublessor,
upon demand, all expenses incurred therefor, including attorneys' fees.

         11.      NOTICES. Whenever notice, demand or communication shall be
required to be given to either party, it shall be deemed sufficient for that
purpose to personally deliver such notice, to mail such notice by registered or
certified mail, return receipt requested, to deliver such notice by overnight
courier, or to send such notice by facsimile addressed as follows:

                                    If to Sublessor:
                                    Motorola, Inc.
                                    Real Estate & Development
                                    1303 E. Algonquin Road
                                    7th Floor
                                    Schaumburg, IL   60196
                                    Facsimile:  847/435-3919
                                    Attn:  Real Estate Manager

<PAGE>

                                    If to Sublessee:
                                    Propel, Inc.
                                    425 North Martingale Road
                                    Suite 1800
                                    Schaumburg, IL   60173
                                    Facsimile: 847/435-3917
                                    Attn: Chief Administrative Officer

or to such other address as either party may otherwise designate in writing to
the other party. The effective date of any such notice, demand or communication
shall be three (3) business days the date on which the same is deposited in the
mail, if delivered by certified or registered mail, or shall be upon receipt if
delivered by overnight courier, by personal delivery or by facsimile.

         12.      INSURANCE COVERAGE. Throughout the term of this Sublease,
Sublessee, at its own cost and expense, shall procure and maintain casualty
insurance, public liability insurance and all such other insurance as Sublessor
is required to maintain under the terms of the Principal Lease as the primary
coverage. In addition to the requirements of the Principal Lease, said policies
of insurance shall name Sublessor as an additional insured thereunder.

         13.      WAIVER OF CLAIMS AND INDEMNITY.

                  (a)      To the extent not expressly prohibited by law,
Sublessee hereby releases and waives all claims, from any cause whatsoever,
against Sublessor, its agents, employees and servants, for injury or damage to
person, property or business sustained in or about the Sublease Premises by
Sublessee, its agents, employees or servants, other than by reason of the
negligence or willfulness of Sublessor or its agents, employees or servants.

                  (b)      Sublessee agrees to indemnify and hold harmless
Sublessor, its agents, employees and servants, against any and all claims,
demands, costs and expenses of every kind and nature, including attorneys' fees,
arising from Sublessee's occupancy of the Sublease Premises or from any breach
or default on the part of Sublessee in the performance of any agreement of
Sublessee to be performed pursuant to the terms of this Sublease, or from any
act or neglect of Sublessee, its respective employees, agents, guests, servants,
invitees or customers in or about the Sublease Premises. In case any such
proceeding is brought by any of said persons, Sublessee covenants, at the
request of Sublessor, to defend such proceeding, at its sole cost and expense,
by legal counsel satisfactory to Sublessor.

         14.      DAMAGES FROM CERTAIN CAUSES. Other than for Sublessor's wanton
or willful misconduct, Sublessor shall not be liable or responsible to Sublessee
for any loss or damage to any property or person occasioned by plumbing, gas,
water, sprinkler, steam or other pipes or sewerage bursting, leaking or running;
water, snow or ice being upon or coming through the roof, skylights, trap door
or otherwise; acts or neglect of owners or occupants of adjacent or contiguous
property; theft, fire, act of God, public enemy, injunction, riot, strike,
insurrection, war, court order, requisition or order of governmental body or
authority; or for any damage or inconvenience which

<PAGE>

may arise through repair or alteration of any part of the Premises, or failure
to make any such repairs.

         15.      ENTRY BY SUBLESSOR. Sublessee shall permit Landlord, Sublessor
and the agents of Landlord or Sublessor to enter upon the Premises at all
reasonable times and at all times provided under the terms of the Principal
Lease to examine the condition thereof and conditions of Sublessee's occupancy
or to make such repairs, additions or alterations therein as Landlord or
Sublessor may deem necessary, or to exhibit the same.

         16.      SUBLET AND ASSIGNMENT. Sublessee shall not assign or transfer
this Sublease, nor allow the Sublease Premises to be occupied in whole or in
part by any other person, nor sublet the Sublease Premises or any part thereof
in any manner without the prior written consent of (a) Sublessor, which consent
shall be in the sole and absolute discretion of Sublessor, and (b) Landlord.

         17.      MUTUAL DELIVERY OF NOTICES. From and after the Commencement
Date, Sublessor and Sublessee shall deliver to each other true, correct and
complete copies any notices, demands, communications or other instruments or
documents received from or given by or to Landlord by either of them, in any way
relating to or affecting the Principal Lease or the Sublease Premises. Sublessee
shall furnish Sublessor with any and all information Sublessor may request
concerning the performance of the terms, covenants and conditions of the
Principal Lease.

         18.      RIGHT OF SUBLESSOR TO PERFORM SUBLESSEE'S COVENANTS. If
Sublessee shall fail to make any payment or perform any act required to be made
or performed hereunder, Sublessor, without waiving or releasing any obligation
or default, may (but shall be under no obligation to) at any time thereafter
make such payment or perform such act for the account and at the expense of
Sublessee, and may enter upon the Sublease Premises or any part thereof for such
purpose and take all such action thereon as may be necessary or appropriate
therefor.

         19.      TERMS OF THE PRINCIPAL LEASE. Unless expressly stated herein,
the terms and provisions of the Principal Lease shall govern and control
Sublessee's use and operation of the Sublease Premises, including without
limitation the provisions addressing untenantability, casualty, eminent domain,
sale of the building, signs and displays, and imposition of mechanics' liens.

         20.      NO WAIVER. No waiver, on the part of Sublessor, its successors
or assigns, of any default or breach by Sublessee of any covenant, agreement or
condition of this Sublease shall be construed to be a waiver of the rights of
Sublessor as to any prior or future default or breach by Sublessee.

         21.      REMEDIES CUMULATIVE. The remedies available to Sublessor under
the terms of this Sublease and in law or equity shall be cumulative and the
exercise of one remedy shall not constitute an election of or waiver of
remedies.

         22.      QUIET ENJOYMENT. Sublessor agrees that Sublessee shall, and
may peacefully have, hold and enjoy the Sublease Premises, subject to the other
terms hereof and the Principal Lease,

<PAGE>

provided that Sublessee pays Rent and other sums herein recited to be paid by
Sublessee and performs all of Sublessee's covenants and agreements herein
contained.

         23.      SUBORDINATION AND ATTORNMENT. This Sublease shall be subject
and subordinate to the lien of any deed of trust or mortgage that Landlord may
place upon the Demised Premises or the Sublease Premises, and to all terms,
conditions and provisions thereof, to all advances made, and to any renewals,
extensions, modifications or replacements thereof. The parties hereto agree to
execute or obtain execution of such reasonable documents as may be necessary to
effectuate said subordination. In the event of a termination of the Principal
Lease, Sublessee shall attorn to Landlord.

         24.      MISCELLANEOUS.

                  (a)      This instrument constitutes the entire agreement
between the Sublessor and Sublessee; no prior or written contemporaneous oral
promises or representations shall be binding.

                  (b)      This Sublease shall not be amended, changed or
extended except by written instrument signed by both parties and consented to by
Landlord (if required by the terms of the Principal Lease).

                  (c)      In the event any covenants, condition or provision
herein contained is held to be invalid by final judgment of any Court of
competent jurisdiction, the invalidity of such covenant, condition or provision
shall not in any way affect any other covenant, condition or provision herein
contained.

                  (d)      Where in this instrument rights are given to either
Sublessor or Sublessee, such rights shall extend to the agents, employees or
representatives of such persons.

                  (e)      The paragraph headings and captions of this Sublease
are for convenience only and in no way limit or enlarge the scope or meaning of
the language hereof.

                  (f)      This Sublease shall be binding upon Sublessee and
shall inure to the benefit of Sublessor and its successors and assigns.

                  (g)      Time is of the essence of this Sublease and each and
all of the provisions thereof.

                  (h)      Neither this Sublease, nor any memorandum, affidavit
or other writing with respect thereto, shall be recorded by Sublessee or by
anyone acting through, under or on behalf of Sublessee.

                  (i)      In general, when reference is made to the Sublessee's
duties, obligations and covenants under the Principal Lease, the term "Tenant"
in the Principal Lease shall be construed to mean the "Sublessee" under this
Sublease.

<PAGE>

                  (j)      The parties expressly intend that this Sublease shall
comply with all applicable laws, rules and regulations of all applicable
governmental, certification and regulatory authorities. Accordingly, the parties
agree to renegotiate, in good faith, any term, condition or provision of this
Sublease that is determined to be in contravention of any such law, rule or
regulation.

                  (k)      During the time that Sublessee is a subsidiary of
Sublandlord, Sublessee shall have the right and privilege to use Sublandlord's
employee lunchroom on the 17th Floor of the Demised Premises.

                  (l)      Sublandlord shall allocate ____ reserved parking
spaces out of Sublandlord's reserved parking spaces to Sublessee.

                  (m)      Paragraph 29.10, Paragraph 31, Paragraph 33 and the
Third Amendment to Lease of the Principal Lease are specifically deleted from
this Sublease, and Sublessee shall have no rights with respect thereto.

         25.      REQUIRED CONSENT. The execution and delivery of this Sublease
by Sublessor is expressly subject to and conditioned upon the execution and
delivery by Landlord of the Consent of Landlord attached to this Sublease, or
other consent of Landlord in form and substance acceptable to Sublessor.
Paragraph 15.1 of the Lease permits assignment and subletting to any subsidiary
or affiliate of Tenant.

         26       ENVIRONMENTAL.

                  A.  For purposes of this paragraph:

         (1) "Existing Environmental Conditions" shall mean the environmental
conditions at the Premises, including the presence of any Hazardous Materials,
as of the commencement of the term of this Sublease.

         (2) "Environmental Requirement" shall mean any law, regulations or
legal requirement relating to health, safety or the environment, now in effect
or hereinafter enacted, including but not limited to the Comprehensive
Environmental Response Compensation and Liability Act (CERCLA"), the Toxic
Substances Control Act ("TSCA"), the Federal Insecticide Fungicide and
Rodenticide Act (FIFRA"), the Resource Conservation and Recovery Act ("RCRA"),
the Clean Air Act (CAA") and the Clean Water Act ("CWA"), the Occupational
Safety and Health Act (OSHA") and all similar state and local laws, rules,
regulations and guidance, now in existence or hereinafter enacted, as each such
law, rule or regulation may be amended from time to time.

         (3) "Environmental Hazard" shall mean Hazardous Materials (as defined
hereinafter), or the storage, handling, production, disposal, treatment or
release thereof.

         (4) "Hazardous Material" shall mean (a) any hazardous waste, any
extremely hazardous waste, or any restricted hazardous waste, or words of
similar import, as defined in the Resource Conservation and Recovery Act (42
U.S. C. Section 6901 ET SEQ.); (b) any hazardous substances as defined in the

<PAGE>

Comprehensive Environmental Response Compensation and Liability Act (42 U.S. C.
Section 9601 ET SEQ.); (c) any toxic substances as defined in the Toxic
Substances Control Act (15 U.S.C. Section 2601 ET SEQ.); (d) any pollutant as
defined in the Clean Water Act (33 U.S.C. Section 1251 ET SEQ.); (e) gasoline,
petroleum or other hydrocarbon products or by-products; (f) asbestos; or (g) any
other materials, substances or wastes subject to environmental regulation under
any applicable federal, state or local law, regulation, or ordinance now or
hereafter in effect.

         (5) "Environmental Liabilities" shall mean any liability, penalties,
fines forfeitures, demands, damages, losses, claims causes of action, suits
judgments and costs and expenses incidental thereto (including cost of defense,
settlement, reasonable attorneys' fees), arising from or based on (i)
environmental contamination or the threat of environmental contamination or (ii)
compliance with, or violation of, any Environmental Requirement, and shall
include, but not be limited to, liability arising from:

                  (a)  any governmental action, order, directive, administrative
         proceeding, or ruling;

                  (b) personal or bodily injuries (including death) or damages
         to any property (including loss of use) or natural resources;

                  (c) cleanup, remediation, investigation, monitoring or other
         response action.

         (6) "Environmental Release" shall mean any release, spill, leak,
discharge, injection, disposal, or emission of any Hazardous Materials into the
environment.

                  B. Notwithstanding any other provision of this Sublease,
Sublessee releases Sublessor, Landlord, their successors and assigns, and
present and future officers, directors, employees, and agents, from any claim of
any kind, including but not limited to claims arising under any Environmental
Requirement, to the extent that such claim directly or indirectly is based on or
results from the Existing Environmental Conditions.

                  C. At all times during the term of the Sublease, Sublessee
shall conduct its activities at the Premises, and shall ensure that any invitee
of Sublessee conducts its activities at the Premises, in strict compliance with
all applicable Environmental Requirements.

                  D. Sublessee shall notify Sublessor immediately of any
Environmental Release at, on, under, or from the Premises. Unless directed
otherwise by the Sublessor, Sublessee shall act immediately to investigate the
extent of, and to take appropriate action to abate and remediate, such
Environmental Release, whether or not ordered or otherwise directed to do so by
any governmental entity or otherwise obligated to do so by any Environmental
Requirement.

                  E. Sublessor shall have the right to make inquiries concerning
all environmental matters and Sublessee will cooperate with such inquiries. Such
inquiries may include physical inspections, including tests and sampling, at the
Premises, or otherwise, and interviews with personnel of Sublessee.

                  F. Notwithstanding any other provision of this Sublease,
Sublessee agrees to indemnify and hold harmless Sublessor, Landlord, their
successors and assigns, and present and future officers, directors, employees,
and agents, (collectively "Indemnitees") from and against any and all
Environmental Liabilities which Sublessor, Landlord or any or all of the
Indemnitees may hereafter suffer, incur, be responsible for or disburse as a
result of any Environmental Hazard at the Premises

<PAGE>

caused by or attributable to the Sublessor or the Sublessor's activities or by
any invitee by the activities of any invitee of the Sublessor.

                  F. The provision of this paragraph shall survive the
termination of this Sublease.

         IN WITNESS WHEREOF, the parties hereto have executed this Sublease as
of the day and year first above written.

SUBLESSOR:                              SUBLESSEE:

MOTOROLA, INC.,                         PROPEL, INC.
a Delaware corporation                  a Delaware corporation

By:________________________________     By:____________________________________

     Name:_________________________             Name:__________________________

     Title:________________________             Title:_________________________

<PAGE>

                               CONSENT OF LANDLORD

         The undersigned, as Landlord under the Principal Lease, hereby
acknowledges and consents to all of the terms and conditions of this Sublease.
The undersigned acknowledges that its consent as evidenced below satisfies the
requirements of Paragraph 15 of the Principal Lease. The undersigned hereby
certifies to Sublessor and Sublessee the following: (a) the Principal Lease has
not been canceled, modified, assigned, extended or amended; (b) Sublessor, as
tenant under the Principal Lease, is not in default under the terms of the
Principal Lease, nor has an event occurred which, with the giving of notice or
the passage of time, or both, may become a default under the terms of the
Principal Lease; and (c) the Principal Lease is in full force and effect.

Date:  ________________, 2000

LANDLORD:
WOODFIELD REALTY HOLDING COMPANY, LLC
A Delaware limited liability company

By:      _____________________________
Name:    _____________________________
Title:   _____________________________

<PAGE>

                                    EXHIBIT A

                                 PRINCIPAL LEASE
                                 ---------------

<PAGE>

                                    EXHIBIT B

                                SUBLEASE PREMISES
                                -----------------

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