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                                                                   EXHIBIT 10.19

                             AMENDED AND RESTATED
                             EMPLOYMENT AGREEMENT
                             --------------------

     This Amended and Restated Employment Agreement (the "Agreement") is made,
entered into and is effective as of July 1, 2000 by and between Illinois PCS,
LLC, an Illinois limited liability company (the "Company"), Patricia M.
Greteman ("Executive") and, for the limited purposes specified herein, iPCS,
Inc., a Delaware corporation (the "Parent").

                               WITNESSETH THAT:
                               ---------------

     WHEREAS, the Company desires to continue to employ Executive pursuant to
the terms and conditions set forth in this Agreement and Executive desires to
continue to be employed by the Company pursuant to the terms and conditions of
this Agreement;

     WHEREAS, the Company is contemplating a reorganization (the
"Reorganization") pursuant to which the Company will be merged into a corporate
subsidiary of the Parent (and following the Reorganization, such corporate
subsidiary, which will be the survivor of the merger, shall thereafter be
referred to herein as the Company);

     WHEREAS, following the Reorganization, an initial public offering of the
common stock of the Parent is contemplated (the "IPO");

     WHEREAS, the Company, Executive and Parent previously entered into an
Employment Agreement (the "Prior Agreement") as of February 29, 2000 (the
"Effective Date"); and

     WHEREAS, the Company and Executive desire to amend, restate and continue
the Prior Agreement in the form of this Agreement and for this Agreement to be
effective as of the Effective Date and to remain in full force and effect
subject to its terms whether or not the Reorganization is completed and whether
or not the IPO is consummated, provided that if the Reorganization is
consummated this Agreement will be assumed, by operation of law and without any
further action of any party, by the corporate subsidiary of the Parent as the
Company hereunder and will remain in full force and effect thereafter subject to
its terms.

     NOW THEREFORE, in consideration of the mutual covenants and agreements set
forth below, it is hereby covenanted and agreed by the Company, Executive and,
for the limited purposes specified, the Parent, as follows:

     1.   Employment Period.  Subject to the terms and conditions of this
          -----------------
Agreement, the Company hereby agrees to employ Executive during the Employment
Period (as defined below) and Executive hereby agrees to remain in the employ of
the Company and to provide services during the Employment Period in accordance
with this Agreement.  The "Initial Employment Period" shall be the period
beginning on the Effective Date and ending on the third anniversary
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thereof, unless sooner terminated as provided herein. At the conclusion of the
Initial Employment Period this Agreement shall automatically renew for
additional one year terms (each a "Renewal Employment Period" and together with
the Initial Employment Period, the "Employment Period") unless either party
gives notice of intent not to renew at least 90 days prior to the beginning of
any Renewal Employment Period.

     2.   Duties.  Executive agrees that during the Employment Period while
          ------
Executive is employed by the Company, Executive will devote Executive's full
business time, energies and talents to serving as the Controller of the Company
and the Parent and providing services for the Company at the direction of the
Company's President and Chief Executive Officer, or his designee (the "CEO") or,
for periods prior to the consummation of the Reorganzation, the Manager of the
Company or his designee (the "Manager").  Executive shall have such duties and
responsibilities as may be assigned to Executive from time to time by the
Manager or CEO, as applicable, shall perform all duties assigned to Executive
faithfully and efficiently, subject to the direction of the Manager or CEO, as
applicable, and shall have such authorities and powers as are inherent to the
undertakings applicable to Executive's position and necessary to carry out the
responsibilities and duties required of Executive hereunder.  Subject to the
terms and conditions of this Agreement, Executive will perform the duties
required by this Agreement at the Company's principal place of business unless
the nature of such duties requires otherwise.  The parties acknowledge and agree
that the Company is transitioning its principal place of business and that no
later than December 31, 2000, such principal place of business will be in the
greater Chicago metropolitan area.  Notwithstanding the foregoing, during the
Employment Period, Executive may devote reasonable time to activities other than
those required under this Agreement, including activities involving
professional, charitable, educational, religious and similar type activities to
the extent such activities do not, in the reasonable judgment of the Manager or
CEO, as applicable, inhibit, prohibit, interfere with or conflict with
Executive's duties under this Agreement or conflict in any material way with the
business of the Company and its affiliates; provided, however, that Executive
shall not serve on the board of directors of any business or hold any other
position with any business without receiving the prior written consent of the
Manager or CEO, as applicable, which consent may not be unreasonably withheld.

     3.   Compensation and Benefits.  Subject to the terms and conditions of
          -------------------------
this Agreement, during the Employment Period while Executive is employed by the
Company, the Company shall compensate Executive for Executive's services as
follows:

     (a)  Beginning on the date Executive commences employment with the Company
          Executive shall be compensated at an annual rate of $100,000 (the
          "Annual Base Salary"), which shall be payable in accordance with the
          normal payroll practices of the Company.  Beginning on the January 1
          immediately following the Effective Date, and on each anniversary of
          such date, Executive's rate of Annual Base Salary shall be reviewed by
          the Manager or CEO, as applicable, and/or the Parent's Compensation
          Committee (the "Compensation Committee") and

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          following such review, the Annual Base Salary may be adjusted upward
          but in no event will be decreased.

     (b)  Executive shall be entitled to receive performance based annual
          incentive bonuses ("Incentive Bonus") from the Company in accordance
          with the Company's Executive Compensation Strategy and Incentive
          Design Plan as in effect from time to time (the "Incentive Bonus
          Plan"). The annual Incentive Bonus at the target level of performance
          will be 25% of the Annual Base Salary for the year in which the bonus
          relates (the "Target Incentive Bonus"). The annual Incentive Bonus may
          range from 50% to 200% of the Target Incentive Bonus based the level
          of the Company's and Executive's performance. In addition, the
          Incentive Bonus is subject to further adjustment as described below.

          After discussions with Executive, the Manager or CEO, as applicable,
          shall develop annual incentive goals that provide Executive with the
          opportunity to earn an annual Incentive Bonus. Such goals will be
          submitted to the governing body of the Company pursuant to the
          Company's Operating Agreement dated as of February 10, 1999 (as the
          same may be amended from time to time) (the "Operating Agreement") or
          the Compensation Committee, as applicable, for review, amendment (if
          necessary) and final approval. The first such goals will be delivered
          in writing to Executive prior to the Effective Date, or as soon
          thereafter as possible, and annually thereafter on or about December
          15 of each year. Within 45 days after the end of each fiscal year of
          the Company, the Manager or CEO, as applicable, shall review the goals
          for the prior year and develop recommendations as to the amount of
          Incentive Bonus Executive is eligible to receive based on the
          satisfaction of the applicable criteria. The Manager's or CEO's, as
          applicable, recommendation may include a request to either increase or
          decrease the Incentive Bonus by up to 20% based on individual
          performance. All such recommendations will be submitted to the
          governing body of the Company pursuant to the Operating Agreement or
          the Compensation Committee, as applicable, for review, amendment (if
          necessary) and approval. Promptly after such final approval, Executive
          shall be notified of the outcome and, if applicable, any Incentive
          Bonus that was awarded shall be paid.

     (c)  As soon as practicable after the Reorganization, Executive shall be
          granted an option under the Parent's Amended and Restated 2000 Long
          Term Incentive Plan (the "Option Plan") to purchase 50,000 shares of
          the Parent's common stock (the "Stock Options"), at a purchase price
          equal to the Fair Market Value (as defined in the Option Plan) as of
          the date of grant.

          The Stock Options shall be subject to the terms of the Option Plan and
          of the Award Agreement delivered in connection with the Option Plan.
          As of the date of grant, the Stock Options shall be fully vested and
          exercisable with respect to 6.25% of the shares of stock subject
          thereto multiplied by the number of full 90

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          day periods which have then elapsed since the Executive was first
          employed by the Company and its affiliates (whether pursuant to this
          Agreement or otherwise). Other stock options that may be granted shall
          be subject to the terms of the Option Plan and the Award Agreement
          delivered pursuant to the Option Plan. The Stock Options and other
          stock options that may be granted shall fully vest and become
          exercisable upon each of the following events: (i) a Change in Control
          (as defined in paragraph 4(h) below), (ii) Executive terminates this
          Agreement pursuant to paragraph 4(e), (iii) this Agreement is
          terminated due to Executive's death or Disability (as defined in
          paragraph 4(h) below). In addition, the Stock Options shall fully vest
          and become exercisable immediately upon the Company giving notice
          pursuant to paragraph 1 that the Company will not renew the Agreement
          beyond the Initial Employment Period.

     (d)  Except as otherwise specifically provided to the contrary in this
          Agreement, Executive shall be provided with pension and welfare fringe
          benefits to the same extent and on the same terms as those benefits
          are provided by the Company from time to time to the Company's other
          senior management employees and Executive shall be entitled to no less
          than four weeks' vacation for each calendar year.

     (e)  Executive shall be reimbursed by the Company, on terms and conditions
          that are substantially similar to those that apply to other similarly
          situated senior management employees of the Company, for reasonable
          out-of-pocket expenses for entertainment, travel, meals, lodging and
          similar items which are consistent with the Company's expense
          reimbursement policy and actually incurred by Executive in the
          promotion of the Company's business.

     (f)  Executive shall be provided with the relocation assistance that is (i)
          awarded under the Company's relocation plan in effect from time to
          time, and (ii) communicated by the Company in writing to Executive.

     (g)  The Company shall pay the reasonable costs and expenses incurred by
          Executive in reviewing, negotiating and preparing this Agreement, up
          to a maximum of $5,000.

     4.   Rights and Payments Upon Termination.  Executive's right to benefits
          ------------------------------------
and payments, if any, for periods after the date on which Executive's employment
with the Company and its affiliates terminates for any reason (the "Termination
Date") shall be determined in accordance with this paragraph 4:

     (a)  Minimum Payments.  If Executive's Termination Date occurs during the
          ----------------
          Employment Period for any reason, Executive shall be entitled to the
          following payments, in addition to any payments or benefits to which
          Executive may be entitled under the following provisions of this
          paragraph 4 (other than this

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          paragraph (a)) or the express terms of any employee benefit plan or as
          required by law:

          (i)   Executive's earned but unpaid Annual Base Salary for the period
                ending on Executive's Termination Date;

          (ii)  Executive's earned but unpaid Incentive Bonus for the prior
                fiscal year;

          (iii) Executive's accrued but unpaid vacation pay for the period
                ending with Executive's Termination Date, as determined in
                accordance with the Company's policy as in effect from time to
                time; and

          (iv)  Executive's unreimbursed business expenses and all other items
                earned and owed to Executive through and including or benefits
                which have vested as of the Termination Date.

          Payments to be made to Executive pursuant to this paragraph 4(a) shall
          be made within 30 days after Executive's Termination Date. Except as
          may be otherwise expressly provided to the contrary in this Agreement
          or as otherwise provided by law, nothing in this Agreement shall be
          construed as requiring Executive to be treated as employed by the
          Company following Executive's Termination Date for purposes of any
          employee benefit plan or arrangement in which Executive may
          participate at such time.

     (b)  Termination By Company for Cause.  If Executive's Termination Date
          --------------------------------
          occurs during the Employment Period and is a result of the Company's
          termination of Executive's employment on account of Cause (as defined
          in paragraph 4(h) below), then, except as described in paragraph 4(a)
          or as agreed in writing between Executive and the Company, Executive
          shall have no right to payments or benefits under this Agreement (and
          the Company shall have no obligation to make any such payments or
          provide any such benefits) for periods after Executive's Termination
          Date.

     (c)  Termination for Death or Disability.  If Executive's Termination Date
          -----------------------------------
          occurs during the Employment Period and is a result of Executive's
          death or Disability, then, except as described in paragraph 4(a) or as
          agreed in writing between Executive and the Company, Executive (or in
          the event of Executive's death, Executive's estate) shall be entitled
          to the following: (i) continuing payments of Executive's Annual Base
          Salary (payable in accordance with paragraph 3(a)), (ii) continuation
          of health benefits for, if applicable, Executive and Executive's
          dependents at a cost which is no greater than is charged to active
          employees of the Company and their dependents, which continuing health
          benefits shall be in addition to, and not part of, any health benefits
          required to be provided to Executive and Executive's dependents under
          Section 4980B of the Internal

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          Revenue Code of 1986, as amended (the "Code"), and (iii) a lump sum
          payment equal to the Target Incentive Bonus, provided that the
          payments and benefits contemplated by the immediately preceding items
          (i) and (ii) shall commence on Executive's Termination Date and end on
          the earlier of (I) the first anniversary of Executive's Termination
          Date, or (II) if applicable, the date on which Executive violates the
          provisions of paragraphs 5 or 6 of this Agreement.

     (d)  Certain Terminations by the Company or Executive.  If Executive's
          ------------------------------------------------
          Termination Date occurs during the Employment Period and is a result
          of Executive's termination of employment (A) by the Company for any
          reason other than Cause (and is not on account of Executive's death,
          Disability, or voluntary resignation, the mutual agreement of the
          parties or pursuant to paragraph 4(e)), (B) by Executive following the
          Company's breach of this Agreement in any material respect and failure
          to cure the breach within 30 days after notice thereof from Executive,
          or (C) by Executive within 60 days after the Company relocates the
          principal place of business for its accounting functions more than 50
          miles from Geneseo, Illinois, then, except as described in paragraph
          4(a) or as agreed in writing between Executive and the Company,
          Executive shall be entitled to the following payments and benefits:
          (i) continuing payments of Executive's Annual Base Salary (payable in
          accordance with paragraph 3(a)), (ii) continuation of health benefits
          for Executive and Executive's dependents at a cost which is no greater
          than is charged to active employees of the Company and their
          dependents, which continuing health benefits shall be in addition to,
          and not part of, any health benefits required to be provided to
          Executive and Executive's dependents under Section 4980B of the Code;
          (iii) a lump sum payment equal to the Target Incentive Bonus, and (iv)
          continued vesting of any unvested stock options, provided that the
          payments and benefits contemplated by the immediately preceding items
          (i), (ii) and (iv) shall commence on Executive's Termination Date and
          end on the earlier of (I) the first anniversary of Executive's
          Termination Date, or (II) the date on which Executive violates the
          provisions of paragraphs 5 or 6 of this Agreement. Notice by the
          Company that the term of this Agreement will not be renewed will not
          result in Executive being eligible for any payments or benefits
          contemplated by this paragraph 4(d).

     (e)  Termination by Executive.  If Executive's Termination Date occurs
          ------------------------
          during the Employment Period, is within the one year period after a
          Change in Control, and is (A) a result of Executive's termination of
          employment by the Company for any reason other than Cause, or (B) a
          result of Executive terminating this Agreement for Good Reason (as
          defined in paragraph 4(h)), then, except as described in paragraph
          4(a) or as agreed in writing between Executive and the Company,
          Executive shall be entitled to the following payments and benefits:
          (i) a lump sum payment equal to two times Executive's Annual Base
          Salary; (ii) continuation of health benefits for Executive and
          Executive's dependents for a period of one year after Executive's
          Termination Date at a cost which is no

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          greater than is charged to active employees of the Company and their
          dependents, which continuing health benefits shall be in addition to,
          and not part of, any health benefits required to be provided to
          Executive and Executive's dependents under Section 4980B of the Code;
          (iii) a lump sum payment equal to the Target Incentive Bonus, and (iv)
          immediate vesting of any and all stock options or other incentive
          awards held by Executive.

     (f)  Termination for Voluntary Resignation, Mutual Agreement or Other
          ----------------------------------------------------------------
          Reasons. If Executive's Termination Date occurs during the Employment
          -------
          Period and is a result of Executive's voluntary resignation, the
          mutual agreement of the parties, or any reason other than those
          specified in paragraphs (b), (c), (d) or (e) above, then, except as
          described in paragraph 4(a) or as agreed in writing between Executive
          and the Company, Executive shall have no right to payments or benefits
          under this Agreement (and the Company shall have no obligation to make
          any such payments or provide any such benefits) for periods after
          Executive's Termination Date.

     (g)  Excise Tax.  If any payment or benefit to which Executive is entitled
          ----------
          under this Agreement constitutes a "parachute payment" within the
          meaning of section 280G of the Code and, as a result thereof,
          Executive is subject to a tax under section 4999 of the Code or any
          similar tax or assessment (an "Excise Tax"), the Company shall pay to
          Executive an additional amount (the "Make-Whole Amount") which is
          intended to make Executive whole for such Excise Tax. The Make-Whole
          Amount shall be equal to the sum of (i) the amount of the Excise Tax,
          plus (ii) all income, excise and other applicable taxes imposed on
          ----
          Executive under the laws of any Federal, state or local government or
          taxing authority by reason of the payments required under clause (i)
          and this clause (ii). The Make-Whole Amount payable with respect to an
          Excise Tax shall be paid by the Company coincident with the payment
          and benefits with respect to which such Excise Tax relates.

          If the Internal Revenue Service (the "IRS") subsequently adjusts the
          Excise Tax and as a result of such adjustment Executive owes
          additional Excise Tax, the Company shall pay such additional Make-
          Whole Amount that is necessary to make Executive whole (less any
          amounts received by Executive that Executive would not have received
          had the computation initially been computed as subsequently adjusted),
          including the value of any underpaid Excise Tax, and any related
          interest and/or penalties due to the IRS. If such adjustment by the
          IRS results in a refund of previously paid Excise Taxes to Executive,
          then Executive shall promptly pay the Company the amount of such
          refund.

     (h)  Definitions.  For purposes of this Agreement:
          -----------

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          (i)   the term "Cause" shall mean (A) the continuous failure by
                Executive to substantially perform Executive's duties under this
                Agreement, as determined by the Manager or CEO, as applicable,
                and the Company's governing body or Board of Directors, as
                applicable, and after expiration of a cure period of 30 days
                following Executive's receipt of written notice from the Manager
                or CEO, as applicable, describing such failure; (B) the willful
                engaging by Executive in conduct which is demonstrably and
                materially injurious to the Company or its affiliates,
                monetarily or otherwise, as determined by the Company's
                governing body or Board of Directors, as applicable, (C) conduct
                by Executive that involves theft, fraud or dishonesty, (D)
                repeated instances of drug or alcohol abuse or unauthorized
                absences during scheduled work hours, or (E) Executive's
                violation of the provisions of paragraph 5 or 6 of this
                Agreement;

          (ii)  the term "Change in Control" shall mean a change in the
                beneficial ownership of the voting stock of the Parent or a
                change in the composition of the Parent's Board of Directors
                (the "Board") that occurs as follows:

                (A)  any "Person" (as such term is used in Section 13(d) and
                     14(d)(2) of the Securities Exchange Act of 1934, as amended
                     (the "Exchange Act")), other than the Parent, any entity
                     owned, directly or indirectly, by the stockholders of the
                     Parent in substantially the same proportions as their
                     ownership of stock of the Parent, or any trustee or other
                     fiduciary holding securities under an employee benefit plan
                     of the Parent or its subsidiaries or such proportionately
                     owned corporation) becomes through acquisitions of
                     securities of the Parent after the Effective Date of the
                     Plan, the "beneficial owner" (as defined in Rule 13d-3
                     promulgated under the Exchange Act), directly or
                     indirectly, of securities of the Parent representing 50% or
                     more of the combined voting power of the then outstanding
                     securities of the Parent having the right to vote for the
                     election of directors;

                (B)  the stockholders of the Parent approve a merger or
                     consolidation of the Parent with any other corporation,
                     other than (I) a merger or consolidation which would result
                     in the voting securities of the Parent outstanding
                     immediately prior thereto continuing to represent (either
                     by remaining outstanding or by being converted into voting
                     securities of the surviving entity) more than 50% of the
                     combined voting power of the voting securities of the
                     Parent or such surviving entity outstanding immediately
                     after such merger or consolidation, or (II) a merger or
                     consolidation effected to implement a recapitalization of
                     the Parent (or similar transaction) in which no Person
                     acquires more than 15% of the then

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                     outstanding securities of the Parent having the right to
                     vote for the election of directors;

                (C)  the stockholders of the Parent approve a plan of complete
                     liquidation of the Parent or an agreement for the sale or
                     disposition by the Parent of all or substantially all of
                     the assets of the Parent (or any transaction having a
                     similar effect); or

                (D)  during any 24 month period, individuals who at the
                     beginning of such period constitute the Board, and any new
                     director (other than a director designated by a Person who
                     has entered into an agreement with the Parent to effect a
                     transaction described in paragraph (A), (B) or (C) of this
                     paragraph 4(h)(ii)) whose election by the Board or
                     nomination for election by the stockholders of the Parent
                     was approved by a vote of at least two-thirds of the
                     directors then still in office who either were directors at
                     the beginning of the period or whose election or nomination
                     for election was previously so approved, cease for any
                     reason to constitute at least a majority thereof.

                Notwithstanding the foregoing Executive acknowledges and agrees
                that neither the Reorganization nor the IPO itself shall
                constitute a Change in Control for purposes of this Agreement;

          (iii) the term "Good Reason" means the occurrence of any of the
                following in anticipation of or within the one year period
                immediately following a Change in Control: (A) the assignment to
                Executive of duties that are materially inconsistent with
                Executive's duties described in paragraph 2, including, without
                limitation, a material diminution or reduction in Executive's
                office or responsibilities or a reduction in Executive's rate of
                Annual Base Salary, bonus or other compensation or a change in
                Executive's reporting relationship, (B) the relocation of
                Executive to a location that is not within 50 miles of
                Executive's then current principal place of business, or (C) the
                failure of the Company to continue in effect any of the
                Company's annual and long-term incentive compensation plans or
                employee benefit or retirement plans, policies, practices, or
                other compensation arrangements in which Executive participates
                unless such failure to continue the plan, policy, practice or
                arrangement (I) is required by law, or (II) pertains to all plan
                participants generally and the lost value is being replaced by a
                new plan, policy, practice or arrangement of reasonably
                equivalent value; and

          (iv)  the term "Disability" shall mean the inability of Executive to
                continue to perform Executive's duties under this Agreement on a
                full-time basis as a

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                result of mental or physical illness, sickness or injury for a
                period of 120 days within any 12-month period, as determined in
                the sole discretion of the Company's governing body or Board of
                Directors, as applicable.

Notwithstanding any other provision of this Agreement, Executive shall
automatically cease to be an officer of the Parent, the Company and their
respective affiliates as of Executive's Termination Date and, to the extent
permitted by applicable law, any and all monies that Executive owes to the
Company shall be repaid to the extent possible, through deduction of such
amounts from any post-termination payments owed to Executive pursuant to this
Agreement. Notwithstanding any other provision of this Agreement, the Company
may suspend Executive from performing Executive's duties under this Agreement;
provided, however, that during the period of suspension (which shall end no
later than Executive's Termination Date), Executive shall continue to be treated
as an employee of the Company for other purposes, and Executive's rights to
compensation or benefits hereunder shall be in effect.  Other than as expressly
provided in paragraphs 4(c) and (d), post-termination benefits may not be
suspended or not paid.

     5.   Confidential Information.  Executive agrees that:
          ------------------------

     (a)  Except as may be required by the lawful order of a court or agency of
          competent jurisdiction, or except to the extent that Executive has
          express authorization from the Company, Executive agrees to keep
          secret and confidential indefinitely all non-public information
          (including, without limitation, information regarding litigation and
          pending litigation) concerning the Company and its affiliates
          (collectively, "Confidential Information") which was acquired by or
          disclosed to Executive during the course of Executive's employment
          with the Company and not to disclose the same, either directly or
          indirectly, to any other person, firm, or business entity, or to use
          it in any way.

     (b)  Confidential Information does not include (i) information which, at
          the time of disclosure is published, known publicly or is otherwise in
          the public domain, through no fault of Executive; (ii) information
          which, after disclosure is published or becomes known publicly or
          otherwise becomes part of the public domain, through no fault of
          Executive; and (iii) information which is required to be disclosed in
          compliance with applicable laws or regulations or by order of a court
          or other regulatory body of competent jurisdiction.

     (c)  To the extent that any court or agency seeks to have Executive
          disclose Confidential Information, Executive shall promptly inform the
          Company, and Executive shall take such reasonable steps to prevent
          disclosure of Confidential Information until the Company has been
          informed of such requested disclosure, and the Company has an
          opportunity to respond to such court or agency. To the extent that
          Executive obtains information on behalf of the Company or any of its
          affiliates that may be subject to attorney-client privilege as to the
          Company's attorneys, Executive shall follow the guidelines provided by
          the Company's legal

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          counsel on maintaining the confidentiality of such information and to
          preserve such privilege.

     (d)  Nothing in the foregoing provisions of this paragraph 5 shall be
          construed so as to prevent Executive from using, in connection with
          Executive's employment for himself or an employer other than the
          Company and its affiliates, knowledge which was acquired by Executive
          during the course of Executive's employment with the Company and its
          affiliates and which is generally known to persons of Executive's
          experience in other companies in the same industry.

     6.   Noncompetition and Nonsolicitation.  While Executive is employed by
          ----------------------------------
the Company and its affiliates, and for a period of 12 months after Executive's
Termination Date, Executive agrees that:

     (a)  Executive will not, directly or indirectly engage in, assist, perform
          services for, establish or open, or have any equity interest (other
          than ownership of 5% or less of the outstanding stock of any
          corporation listed on the New York or American Stock Exchange or
          included in the National Association of Securities Dealers Automated
          Quotation System) in any person, firm, corporation, partnership or
          business entity (whether as an employee, officer, partner, director,
          agent, security holder, creditor, consultant, or otherwise) that
          engages in the Restricted Business (as defined below) in the
          Restricted Territory (as defined below);

     (b)  Executive will not, directly or indirectly, for himself or on behalf
          of or in conjunction with any other person, firm, corporation,
          partnership or business entity, solicit or attempt to solicit any
          party who is then or, during the 12-month period prior to such
          solicitation or attempt by Executive was (or was solicited to become),
          a customer of the Company, provided that the restriction in this
          paragraph (b) shall not apply to any activity on behalf of a business
          that is not a Restricted Business; and

     (c)  Executive will not (and will not attempt to) solicit, entice, persuade
          or induce any individual who is employed by the Company or its
          affiliates to terminate or refrain from renewing or extending such
          employment or to become employed by or enter into contractual
          relations with any other individual or entity other than the Company
          or its affiliates, and Executive shall not approach any such employee
          for any such purpose or authorize or knowingly cooperate with the
          taking of any such actions by any other individual or entity.

For purposes of this Agreement the term (a) "Restricted Business" means the
business of providing wireless telecommunication services or any other business
in which the Company is materially engaged on Executive's Termination Date, and
(b) "Restricted Territory" means all of the basic trading areas (as defined in
the Rand McNally Commercial Atlas and Marketing Guide

                                      -11-
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or the successor thereto) in which the Company has been granted the right to
carry on the Restricted Business.

     7.   Equitable Remedies.  Executive acknowledges that the Company would be
          ------------------
irreparably injured by a violation of paragraphs 5 or 6 hereof and Executive
agrees that the Company, in addition to any other remedies available to it for
such breach or threatened breach, shall be entitled to a preliminary injunction,
temporary restraining order, or other equivalent relief, restraining Executive
from any actual or threatened breach of either paragraph 5 or 6.  If a bond is
required to be posted in order for the Company to secure an injunction or other
equitable remedy, the parties agree that said bond need not be more than a
nominal sum.

     8.   Notices.  Any notices provided for in this Agreement shall be in
          -------
writing and shall be deemed to have been duly received when delivered in person
or sent by facsimile transmission, on the first business day after it is sent by
air express courier service or on the second business day following deposit in
the United States registered or certified mail, return receipt requested,
postage prepaid and addressed, in the case of Executive, to the most recent home
address reflected in the Company's records and, in the case of the Company, to
its principal executive offices (attention Manager or CEO, as applicable), or
such other address as either party may have furnished to the other in writing in
accordance herewith, except that a notice of change of address shall be
effective only upon actual receipt.

     9.   Withholding.  All compensation payable under this Agreement shall be
          -----------
subject to customary withholding taxes and other employment taxes as required
with respect to compensation paid by a corporation to an employee and the amount
of compensation payable hereunder shall be reduced appropriately to reflect the
amount of any required withholding. Except as specifically required herein, the
Company shall have no obligation to make any payments to Executive or to make
Executive whole for the amount of any required taxes.

     10.  Successors.  This Agreement shall be binding on, and inure to the
          ----------
benefit of, the Company and its successors and assigns and any person acquiring,
whether by merger, reorganization, consolidation, by purchase of assets or
otherwise, all or substantially all of the assets of the Company.  To the extent
applicable, this Agreement shall be binding on, and inure to the benefit of, the
Parent and its successors and assigns and any person acquiring, whether by
merger, reorganization, consolidation, by purchase of assets or otherwise, all
or substantially all of the assets of the Parent.

     11.  Nonalienation.  The interests of Executive under this Agreement are
          -------------
not subject to the claims of Executive's creditors, other than the Company, and
may not otherwise be voluntarily or involuntarily assigned, alienated or
encumbered.

     12.  Waiver of Breach.  The waiver by the Company, the Parent or Executive
          ----------------
of a breach of any provision of this Agreement shall not operate as or be deemed
a waiver by such party of any subsequent breach.  Continuation of payments
hereunder by the Company following

                                      -12-
<PAGE>

a breach by Executive of any provision of this Agreement shall not preclude the
Company from thereafter terminating said payments based upon the same violation.

     13.  Severability.  It is mutually agreed and understood by the parties
          ------------
that should any of the agreements and covenants contained herein be determined
by any court of competent jurisdiction to be invalid by virtue of being vague or
unreasonable, including but not limited to the provisions of paragraphs 5 or 6,
then the parties hereto consent that this Agreement shall be amended retroactive
to the date of its execution to include the terms and conditions said court
deems to be reasonable and in conformity with the original intent of the parties
and the parties hereto consent that under such circumstances, said court shall
have the power and authority to determine what is reasonable and in conformity
with the original intent of the parties to the extent that said covenants and/or
agreements are enforceable.

     14.  Prevailing Party.  In the event of any action, proceeding or
          ----------------
litigation (collectively, the "Action") between the parties arising out of or in
relation to this Agreement, the prevailing party in such Action, shall be
entitled to recover, in addition to any damages, injunctions, or other relief
and without regard to whether the Action is prosecuted to final appeal, all of
its costs and expenses including, without limitation, reasonable attorney's
fees, from the non-prevailing party.

     15.  Applicable Law.  This Agreement shall be construed in accordance with
          --------------
the laws of the State of Illinois, without regard to conflict of law principles.

     16.  Amendment.  This Agreement may be amended or cancelled by mutual
          ---------
Agreement of the parties in writing without the consent of any other person.

     17.  Counterparts.  This Agreement may be executed in any number of
          ------------
counterparts, each of which when so executed and delivered shall be an original,
but all such counterparts shall together constitute one and the same instrument.
Each counterpart may consist of a copy hereof containing multiple signature
pages, each signed by one party hereto, but together signed by both of the
parties hereto.

     18.  Other Agreements.  This Agreement constitutes the sole and complete
          ----------------
Agreement between or among the Company, the Parent and Executive and supersedes
all other prior or contemporaneous agreements, both oral and written, between or
among the Company, the Parent and Executive with respect to the matters
contained herein including, without limitation any severance agreements or
arrangements between the parties. No verbal or other statements, inducements, or
representations have been made to or relied upon by Executive. The parties have
read and understand this Agreement.

                                      -13-
<PAGE>

     IN WITNESS THEREOF, Executive has hereunto set Executive's hand, and the
Company has caused these presents to be executed in its name and on its behalf,
all as of the day and year first above written.

                                   Illinois PCS, LLC

                                   By: /s/ Timothy M. Yager
                                      ------------------------------------------
                                   Its:    President and Chief Executive Officer
                                       -----------------------------------------

                                   EXECUTIVE

                                   /s/ Patricia M. Greteman
                                   ---------------------------------------------
                                   Patricia M. Greteman

     IN WITNESS THEREOF, the Parent has caused these presents to be executed in
its name and on its behalf, all as of the day and year first above written, for
the limited purposes specified herein.

                                   iPCS, Inc.

                                   By: /s/ Timothy M. Yager
                                      ------------------------------------------
                                   Its:    President and Chief Executive Officer
                                       -----------------------------------------

                                      -14-<PAGE>

                                                                   Exhibit 10.24

                                 A/B EXCHANGE
                         REGISTRATION RIGHTS AGREEMENT

                                 by and among

                                  iPCS, INC.

                             iPCS EQUIPMENT, INC.
                              iPCS WIRELESS, INC.

                                      and

                         DONALDSON, LUFKIN & JENRETTE
                            SECURITIES CORPORATION

                                      and

                           TD SECURITIES (USA) INC.

                           Dated as of July 12, 2000
<PAGE>

                         REGISTRATION RIGHTS AGREEMENT

           This Registration Rights Agreement (this "Agreement") is made and
                                                     ---------
entered into as of July 12, 2000, by and among iPCS, Inc., a Delaware
corporation (the "Company"), iPCS Equipment, Inc., a Delaware corporation and
                  -------
wholly-owned subsidiary of the Company ("Equipment"), iPCS Wireless, Inc., a
                                         ---------
Delaware corporation and wholly-owned subsidiary of the Company ("Wireless" and,
                                                                  --------
together with Equipment, the "Guarantors"), and Donaldson, Lufkin & Jenrette
                              ----------
Securities Corporation ("DLJ") and TD Securities (USA) Inc. (collectively, the
                         ---
"Initial Purchasers"), who have agreed to purchase the Company's Units (the
 ------------------
"Units") which consist of the Company's 14% Senior Discount Notes due 2010 (the
 -----
"Initial Notes") and warrants (the "Warrants") to purchase common stock, $0.01
 -------------                      --------
par value per share, of the Company pursuant to the Purchase Agreement (as
defined below).

           This Agreement is made pursuant to the Purchase Agreement, dated June
29, 2000 (the "Purchase Agreement"), by and among the Company, the Guarantors
               ------------------
and the Initial Purchasers.  In order to induce the Initial Purchasers to
purchase the Units, the Company and the Guarantors have agreed to provide the
registration rights set forth in this Agreement.  The execution and delivery of
this Agreement is a condition to the obligations of the Initial Purchasers set
forth in Section 9 of the Purchase Agreement.  Capitalized terms used herein and
not otherwise defined shall have the meaning assigned to them in the Indenture,
dated July 12, 2000, between the Company, the Guarantors and CTC Illinois Trust
Company, as Trustee, relating to the Initial Notes and the Exchange Notes (the
"Indenture").
 ---------

           The parties hereby agree as follows:

SECTION 1. DEFINITIONS

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

           Act:  The Securities Act of 1933, as amended.
           ---

           Affiliate:  As defined in Rule 144 of the Act.
           ---------

           Broker-Dealer:  Any broker or dealer registered under the Exchange
           -------------
Act.

                                       2
<PAGE>

          Certificated Securities:  Definitive Notes, as defined in the
          -----------------------
Indenture.

          Closing Date:  The date hereof.
          ------------

          Commission:  The Securities and Exchange Commission.
          ----------

          Consummate:  An Exchange Offer shall be deemed "Consummated" for
          ----------
purposes of this Agreement upon the occurrence of (a) the filing and
effectiveness under the Act of the Exchange Offer Registration Statement
relating to the Exchange Notes to be issued in the Exchange Offer, (b) the
maintenance of such Exchange Offer Registration Statement as continuously
effective and the keeping of the Exchange Offer open for a period not less than
the period required pursuant to Section 3(b) hereof and (c) the delivery by the
Company to the Registrar under the Indenture of Exchange Notes in the same
aggregate principal amount as the aggregate principal amount of Initial Notes
tendered by Holders thereof pursuant to the Exchange Offer.

          Consummation Deadline:  As defined in Section 3(b) hereof.
          ---------------------

          Effectiveness Deadline:  As defined in Sections 3(a) and 4(a) hereof.
          ----------------------

          Exchange Act:  The Securities Exchange Act of 1934, as amended.
          ------------

          Exchange Notes:  The Company's 14% Senior Discount Notes due 2010 to
          --------------
be issued pursuant to the Indenture: (i) in the Exchange Offer or (ii) as
contemplated by Section 4 hereof.

          Exchange Offer:  The exchange and issuance by the Company of a
          --------------
principal amount of Exchange Notes (which shall be registered pursuant to the
Exchange Offer Registration Statement) equal to the outstanding principal amount
of Initial Notes that are tendered by such Holders in connection with such
exchange and issuance.

          Exchange Offer Registration Statement:  The Registration Statement
          -------------------------------------
relating to the Exchange Offer, including the related Prospectus.

          Exempt Resales:  The transactions in which the Initial Purchasers
          --------------
propose to sell the Initial Notes to certain "qualified institutional buyers,"
as such

                                       3
<PAGE>

term is defined in Rule 144A under the Act and pursuant to Regulation S under
the Act.

          Filing Deadline:  As defined in Sections 3(a) and 4(a) hereof.
          ---------------

          Holders:  As defined in Section 2 hereof.
          -------

          Prospectus:  The prospectus included in a Registration Statement at
          ----------
the time such Registration Statement is declared effective, as amended or
supplemented by any prospectus supplement and by all other amendments thereto,
including post-effective amendments, and all material incorporated by reference
into such Prospectus.

          Recommencement Date: As defined in Section 6(d) hereof.
          -------------------

          Registration Default:  As defined in Section 5 hereof.
          --------------------

          Registration Statement:  Any registration statement of the Company and
          ----------------------
the Guarantors relating to (a) an offering of Exchange Notes pursuant to an
Exchange Offer or (b) the registration for resale of Transfer Restricted
Securities pursuant to the Shelf Registration Statement, in each case, (i) that
is filed pursuant to the provisions of this Agreement and (ii) including the
Prospectus included therein, all amendments and supplements thereto (including
post-effective amendments) and all exhibits and material incorporated by
reference therein.

          Regulation S: Regulation S promulgated under the Act.
          ------------

          Rule 144: Rule 144 promulgated under the Act.
          --------

          Shelf Registration Statement:  The Registration Statement relating to
          ----------------------------
the Shelf Registration, including the related Prospectus.

          Suspension Notice:  As defined in Section 6(d) hereof.
          -----------------

          TIA:  The Trust Indenture Act of 1939 (15 U.S.C. Section 77aaa-77bbbb)
          ---
as in effect on the date of the Indenture.

          Transfer Restricted Securities: Each Initial Note, until the earliest
          ------------------------------
to occur of (a) the date on which such Initial Note is exchanged in the Exchange
Offer for an Exchange Note which is entitled to be resold to the public by the
Holder

                                       4
<PAGE>

thereof without complying with the prospectus delivery requirements of the Act,
(b) the date on which such Initial Note has been disposed of in accordance with
a Shelf Registration Statement (and the purchasers thereof have been issued
Exchange Notes), or (c) the date on which such Initial Note is distributed to
the public pursuant to Rule 144 under the Act and each Exchange Note until the
date on which such Exchange Note is disposed of by a Broker-Dealer pursuant to
the "Plan of Distribution" contemplated by the Exchange Offer Registration
Statement (including the delivery of the Prospectus contained therein).

           Underwritten Registration:  A registration in which the Transfer
           -------------------------
Restricted Securities are sold to an underwriter for offering and sale to the
public.

SECTION 2. HOLDERS

           A Person is deemed to be a holder of Transfer Restricted Securities
(each, a "Holder") whenever such Person owns Transfer Restricted Securities.
          ------

SECTION 3. REGISTERED EXCHANGE OFFER

           (a) Unless the Exchange Offer shall not be permitted by applicable
federal law (after the procedures set forth in Section 6(a)(i) below have been
complied with), the Company and the Guarantors shall (i) cause the Exchange
Offer Registration Statement to be filed with the Commission no later than 90
days after the Closing Date (such day being the "Filing Deadline"), (ii) use
                                                 ---------------
their respective reasonable best efforts to cause such Exchange Offer
Registration Statement to become effective no later than 180 days after the
Closing Date (such 180th day being the "Effectiveness Deadline"), (iii) in
                                        ----------------------
connection with the foregoing, (A) file all pre-effective amendments to such
Exchange Offer Registration Statement as may be necessary in order to cause it
to become effective, (B) file, if applicable, a post-effective amendment to such
Exchange Offer Registration Statement pursuant to Rule 430A under the Act and
(C) cause all necessary filings, if any, in connection with the registration and
qualification of the Exchange Notes to be made under the Blue Sky laws of such
jurisdictions as are necessary to permit Consummation of the Exchange Offer, and
(iv) upon the effectiveness of such Exchange Offer Registration Statement,
commence and Consummate the Exchange Offer.  The Exchange Offer shall be on the
appropriate form permitting (i) registration of the Exchange Notes to be offered
in exchange for the Initial Notes that are Transfer Restricted Securities and
(ii) resales of Exchange Notes by Broker-Dealers that tendered into the Exchange
Offer Initial Notes that such Broker-Dealer acquired for its own account as a
result of market making activities or

                                       5
<PAGE>

other trading activities (other than Initial Notes acquired directly from the
Company or any of its Affiliates) as contemplated by Section 3(c) below.

          (b) The Company and the Guarantors shall use their respective
reasonable best efforts to cause the Exchange Offer Registration Statement to be
effective continuously, and shall keep the Exchange Offer open for a period of
not less than the minimum period required under applicable federal and state
securities laws to Consummate the Exchange Offer; provided, however, that in no
event shall such period be less than 20 Business Days.  The Company and the
Guarantors shall cause the Exchange Offer to comply with all applicable federal
and state securities laws.  No securities other than the Exchange Notes shall be
included in the Exchange Offer Registration Statement.  The Company and the
Guarantors shall use their respective reasonable best efforts to cause the
Exchange Offer to be Consummated no later than the 30th Business Day after the
Exchange Offer Registration Statement has become effective (such 30th day being
the "Consummation Deadline").
     ---------------------

          (c) The Company shall include a "Plan of Distribution" section in the
Prospectus contained in the Exchange Offer Registration Statement and indicate
therein that any Broker-Dealer who holds Transfer Restricted Securities that
were acquired for the account of such Broker-Dealer as a result of market-making
activities or other trading activities (other than Initial Notes acquired
directly from the Company or any Affiliate of the Company), may exchange such
Transfer Restricted Securities pursuant to the Exchange Offer.  Such "Plan of
Distribution" section shall also contain all other information with respect to
such sales by such Broker-Dealers that the Commission may require in order to
permit such sales pursuant thereto, but such "Plan of Distribution" shall not
name any such Broker-Dealer or disclose the amount of Transfer Restricted
Securities held by any such Broker-Dealer, except to the extent required by the
Commission as a result of a change in policy, rules or regulations after the
date of this Agreement.  See the Shearman & Sterling no-action letter (available
July 2, 1993).

          Because such Broker-Dealer may be deemed to be an "underwriter" within
the meaning of the Act and must, therefore, deliver a prospectus meeting the
requirements of the Act in connection with its initial sale of any Exchange
Notes received by such Broker-Dealer in the Exchange Offer, the Company and the
Guarantors shall permit the use of the Prospectus contained in the Exchange
Offer Registration Statement by such Broker-Dealer to satisfy such prospectus
delivery requirement.  To the extent necessary to ensure that the prospectus
contained in the Exchange Offer Registration Statement is available for sales of
Exchange Notes by Broker-Dealers, the Company and the Guarantors agree to use
their respective reasonable best efforts to keep the Exchange Offer Registration
Statement

                                       6
<PAGE>

continuously effective, supplemented, amended and current as required by and
subject to the provisions of Sections 6(a) and (c) hereof and in conformity with
the requirements of this Agreement, the Act and the policies, rules and
regulations of the Commission as announced from time to time, for a period of
one year from the Consummation Deadline or such shorter period as will terminate
when all Transfer Restricted Securities covered by such Registration Statement
have been sold pursuant thereto. The Company and the Guarantors shall provide
sufficient copies of the latest version of such Prospectus to such Broker-
Dealers, promptly upon request, and in no event later than one Business Day
after such request, at any time during such period.

SECTION 4. SHELF REGISTRATION

           (a) Shelf Registration.  If (i) the Exchange Offer is not permitted
               ------------------
by applicable law (after the Company and the Guarantors have complied with the
procedures set forth in Section 6(a)(i) below) or (ii) if any Holder of Transfer
Restricted Securities shall notify the Company within 20 Business Days following
the Consummation Deadline that (A) such Holder was prohibited by law or
Commission policy from participating in the Exchange Offer or (B) such Holder
may not resell the Exchange Notes acquired by it in the Exchange Offer to the
public without delivering a prospectus and the Prospectus contained in the
Exchange Offer Registration Statement is not appropriate or available for such
resales by such Holder or (C) such Holder is a Broker-Dealer and holds Initial
Notes acquired directly from the Company or any of its Affiliates, then the
Company and the Guarantors shall:

           (x) cause to be filed, on or prior to 30 days after the earlier of
     (i) the date on which the Company determines that the Exchange Offer
     Registration Statement cannot be filed as a result of clause (a)(i) above
     and (ii) the date on which the Company receives the notice specified in
     clause (a)(ii) above (such earlier date, the "Filing Deadline"), a shelf
                                                   ---------------
     registration statement pursuant to Rule 415 under the Act (which may be an
     amendment to the Exchange Offer Registration Statement (the "Shelf
                                                                  -----
     Registration Statement")), relating to all Transfer Restricted Securities,
     ----------------------
     and

           (y) shall use their respective reasonable best efforts to cause such
     Shelf Registration Statement to become effective on or prior to 60 days
     after the Filing Deadline for the Shelf Registration Statement (such 60th
     day the "Effectiveness Deadline").
              ----------------------

           If, after the Company has filed an Exchange Offer Registration
Statement that satisfies the requirements of Section 3(a) above, the Company is

                                       7
<PAGE>

required to file and make effective a Shelf Registration Statement solely
because the Exchange Offer is not permitted under applicable federal law (i.e.,
clause (a)(i) above), then the filing of the Exchange Offer Registration
Statement shall be deemed to satisfy the requirements of clause (x) above;
provided that, in such event, the Company shall remain obligated to meet the
Effectiveness Deadline set forth in clause (y).

          To the extent necessary to ensure that the Shelf Registration
Statement is available for sales of Transfer Restricted Securities by the
Holders thereof entitled to the benefit of this Section 4(a) and the other
securities required to be registered therein pursuant to Section 6(b)(ii)
hereof, the Company and the Guarantors shall use their respective reasonable
best efforts to keep any Shelf Registration Statement required by this Section
4(a) continuously effective, supplemented, amended and current as required by
and subject to the provisions of Sections 6(b) and (c) hereof and in conformity
with the requirements of this Agreement, the Act and the policies, rules and
regulations of the Commission as announced from time to time, for a period of at
least two years (as extended pursuant to Section 6(d)) following the Closing or
such shorter period as will terminate when all Transfer Restricted Securities
covered by such Shelf Registration Statement have been sold pursuant thereto.

          (b) Provision by Holders of Certain Information in Connection with the
              ------------------------------------------------------------------
Shelf Registration Statement.  No Holder of Transfer Restricted Securities may
----------------------------
include any of its Transfer Restricted Securities in any Shelf Registration
Statement pursuant to this Agreement unless and until such Holder furnishes to
the Company in writing, within 20 days after receipt of a request therefor, the
information specified in Item 507 or 508 of Regulation S-K, as applicable, of
the Act for use in connection with any Shelf Registration Statement or
Prospectus or preliminary Prospectus included therein.  No Holder of Transfer
Restricted Securities shall be entitled to liquidated damages pursuant to
Section 5 hereof unless and until such Holder shall have provided all such
information and the Company shall have had a period of three Business Days to
include such information in any Shelf Registration Statement or Prospectus or
preliminary prospectus included therein. Each selling Holder agrees to promptly
furnish additional information required to be disclosed in order to make the
information previously furnished to the Company by such Holder not materially
misleading.

                                       8
<PAGE>

SECTION 5. LIQUIDATED DAMAGES

           If (i) any Registration Statement required by this Agreement is not
filed with the Commission on or prior to the applicable Filing Deadline, (ii)
any such Registration Statement has not been declared effective by the
Commission on or prior to the applicable Effectiveness Deadline, (iii) the
Exchange Offer has not been Consummated on or prior to the Consummation Deadline
or (iv) any Registration Statement required by this Agreement is filed and
declared effective but shall thereafter cease to be effective or fail to be
usable for its intended purpose without being succeeded within five Business
Days by a post-effective amendment to such Registration Statement that cures
such failure and that is itself declared effective within seven Business Days of
filing such post-effective amendment to such Registration Statement (each such
event referred to in clauses (i) through (iv), a "Registration Default"), then
                                                  --------------------
the Company and the Guarantors hereby jointly and severally agree to pay to each
Holder of Transfer Restricted Securities affected thereby liquidated damages in
an amount equal to $0.05 per week per $1,000 in principal amount at maturity of
Transfer Restricted Securities held by such Holder for each week or portion
thereof that the Registration Default continues for the first 90-day period
immediately following the occurrence of such Registration Default. The amount of
the liquidated damages shall increase by an additional $0.05 per week per $1,000
in principal amount at maturity of Transfer Restricted Securities with respect
to each subsequent 90-day period until all Registration Defaults have been
cured, up to a maximum amount of liquidated damages of $0.50 per week per $1,000
in principal amount at maturity of Transfer Restricted Securities; provided that
the Company and the Guarantors shall in no event be required to pay liquidated
damages for more than one Registration Default at any given time.
Notwithstanding anything to the contrary set forth herein, (1) upon filing of
the Exchange Offer Registration Statement (and/or, if applicable, the Shelf
Registration Statement), in the case of (i) above, (2) upon the effectiveness of
the Exchange Offer Registration Statement (and/or, if applicable, the Shelf
Registration Statement), in the case of (ii) above, (3) upon Consummation of the
Exchange Offer, in the case of (iii) above, or (4) upon the filing of a post-
effective amendment to the Registration Statement or an additional Registration
Statement that causes the Exchange Offer Registration Statement (and/or, if
applicable, the Shelf Registration Statement) to again be declared effective or
made usable in the case of (iv) above, the liquidated damages payable with
respect to the Transfer Restricted Securities as a result of such clause (i),
(ii), (iii) or (iv), as applicable, shall cease.

           All accrued liquidated damages shall be paid to the Holders entitled
thereto, in the manner provided for the payment of interest in the Indenture, on
each Interest Payment Date, as more fully set forth in the Indenture and the
Notes.

                                       9
<PAGE>

Notwithstanding the fact that any securities for which liquidated damages are
due cease to be Transfer Restricted Securities, all obligations of the Company
and the Guarantors to pay liquidated damages with respect to securities shall
survive until such time as such obligations with respect to such securities
shall have been satisfied in full.

SECTION 6. REGISTRATION PROCEDURES

           (a) Exchange Offer Registration Statement.  In connection with the
               -------------------------------------
Exchange Offer, the Company and the Guarantors shall (x) comply with all
applicable provisions of Section 6(c) below, (y) use their respective reasonable
best efforts to effect such exchange and to permit the resale of Exchange Notes
by Broker-Dealers that tendered in the Exchange Offer Initial Notes that such
Broker-Dealer acquired for its own account as a result of its market making
activities or other trading activities (other than Initial Notes acquired
directly from the Company or any of its Affiliates) being sold in accordance
with the intended method or methods of distribution thereof, and (z) comply with
all of the following provisions:

               (i)  If, following the date hereof there has been announced a
     change in Commission policy with respect to exchange offers such as the
     Exchange Offer, that in the reasonable opinion of counsel to the Company
     raises a substantial question as to whether the Exchange Offer is permitted
     by applicable law, the Company and the Guarantors hereby agree to seek a
     no-action letter or other favorable decision from the Commission allowing
     the Company and the Guarantors to Consummate an Exchange Offer for such
     Transfer Restricted Securities.  The Company and the Guarantors hereby
     agree to use their respective reasonable best efforts in pursuing the
     issuance of such a decision to the Commission staff level.

               (ii) As a condition to its participation in the Exchange Offer,
     each Holder of Transfer Restricted Securities (including, without
     limitation, any Holder who is a Broker Dealer) shall furnish, upon the
     request of the Company, prior to the Consummation of the Exchange Offer, a
     written representation to the Company and the Guarantors (which may be
     contained in the letter of transmittal contemplated by the Exchange Offer
     Registration Statement) to the effect that (A) it is not an Affiliate of
     the Company, (B) it is not engaged in, and does not intend to engage in,
     and has no arrangement or understanding with any person to participate in,
     a distribution of

                                       10
<PAGE>

     the Exchange Notes to be issued in the Exchange Offer and (C) it is
     acquiring the Exchange Notes in its ordinary course of business. As a
     condition to its participation in the Exchange Offer each Holder using the
     Exchange Offer to participate in a distribution of the Exchange Notes shall
     acknowledge and agree that, if the resales are of Exchange Notes obtained
     by such Holder in exchange for Initial Notes acquired directly from the
     Company or an Affiliate thereof, it (1) could not, under Commission policy
     as in effect on the date of this Agreement, rely on the position of the
     Commission enunciated in Morgan Stanley and Co., Inc. (available June 5,
                              ----------------------------
     1991) and Exxon Capital Holdings Corporation (available May 13, 1988), as
               ----------------------------------
     interpreted in the Commission's letter to Shearman & Sterling dated July 2,
                                               -------------------
     1993, and similar no-action letters (including, if applicable, any no-
     action letter obtained pursuant to clause (i) above), and (2) must comply
     with the registration and prospectus delivery requirements of the Act in
     connection with a secondary resale transaction and that such a secondary
     resale transaction must be covered by an effective registration statement
     containing the selling security holder information required by Item 507 or
     508, as applicable, of Regulation S-K.

               (iii) Prior to effectiveness of the Exchange Offer Registration
     Statement, the Company and the Guarantors shall provide a supplemental
     letter to the Commission (A) stating that the Company and the Guarantors
     are registering the Exchange Offer in reliance on the position of the
     Commission enunciated in Exxon Capital Holdings Corporation (available May
                              ----------------------------------
     13, 1988), Morgan Stanley and Co., Inc. (available June 5, 1991) as
                ----------------------------
     interpreted in the Commission's letter to Shearman & Sterling dated July 2,
                                               -------------------
     1993, and, if applicable, any no-action letter obtained pursuant to clause
     (i) above, (B) including a representation that neither the Company nor any
     of the Guarantors has entered into any arrangement or understanding with
     any Person to distribute the Exchange Notes to be received in the Exchange
     Offer and that, to the best of the Company's and each Guarantor's
     information and belief, each Holder participating in the Exchange Offer is
     acquiring the Exchange Notes in its ordinary course of business and has no
     arrangement or understanding with any Person to participate in the
     distribution of the Exchange Notes received in the Exchange Offer and (C)
     any other undertaking or representation required by the Commission as set
     forth in any no-action letter obtained pursuant to clause (i) above, if
     applicable.

                                       11
<PAGE>

          (b)  Shelf Registration Statement.  In connection with the Shelf
               ----------------------------
Registration Statement, the Company and the Guarantors shall:

               (i)  comply with all the provisions of Section 6(c) below and use
     their respective reasonable best efforts to effect such registration to
     permit the sale of the Transfer Restricted Securities being sold in
     accordance with the intended method or methods of distribution thereof (as
     indicated in the information furnished to the Company pursuant to Section
     4(b) hereof), and pursuant thereto the Company and the Guarantors will
     prepare and file with the Commission a Registration Statement relating to
     the registration on any appropriate form under the Act, which form shall be
     available for the sale of the Transfer Restricted Securities in accordance
     with the intended method or methods of distribution thereof within the time
     periods and otherwise in accordance with the provisions hereof.

               (ii) issue, upon the request of any Holder or purchaser(s) of
     Initial Notes covered by any Shelf Registration Statement contemplated by
     this Agreement, Exchange Notes having an aggregate principal amount equal
     to the aggregate principal amount of Initial Notes sold pursuant to the
     Shelf Registration Statement and surrendered to the Company for
     cancellation; the Company shall register Exchange Notes on the Shelf
     Registration Statement for this purpose and issue the Exchange Notes to the
     purchaser(s) of securities subject to the Shelf Registration Statement in
     the names as such purchaser(s) shall designate.

          (c)  General Provisions.  In connection with any Registration
               ------------------
Statement and any related Prospectus required by this Agreement, the Company and
the Guarantors shall:

               (i)  use their respective reasonable best efforts to keep such
     Registration Statement continuously effective and provide all requisite
     financial statements for the period specified in Section 3 or 4 of this
     Agreement, as applicable.  Upon the occurrence of any event that would
     cause any such Registration Statement or the Prospectus contained therein
     (A) to contain an untrue statement of material fact or omit to state any
     material fact necessary to make the statements therein not misleading or
     (B) not to be effective and usable for resale of Transfer Restricted
     Securities during the period required by this

                                       12
<PAGE>

     Agreement, the Company and the Guarantors shall file promptly an
     appropriate amendment to such Registration Statement curing such defect,
     and, if Commission review is required, use their respective reasonable best
     efforts to cause such amendment to be declared effective as soon as
     practicable.

               (ii)  prepare and file with the Commission such amendments and
     post-effective amendments to the applicable Registration Statement as may
     be necessary to keep such Registration Statement effective for the
     applicable period set forth in Section 3 or 4 hereof, as the case may be;
     cause the Prospectus to be supplemented by any required Prospectus
     supplement, and as so supplemented to be filed pursuant to Rule 424 under
     the Act, and to comply fully with Rules 424, 430A and 462, as applicable,
     under the Act in a timely manner; and comply with the provisions of the Act
     with respect to the disposition of all securities covered by such
     Registration Statement during the applicable period in accordance with the
     intended method or methods of distribution by the sellers thereof set forth
     in such Registration Statement or supplement to the Prospectus;

               (iii) advise each Holder whose Transfer Restricted Securities
     have been included in a Shelf Registration Statement (in the case of the
     Shelf Registration Statement) and the Initial Purchasers promptly and, if
     requested by such Persons, confirm such advice in writing, (A) when the
     Prospectus or any Prospectus supplement or post-effective amendment has
     been filed, and, with respect to any applicable Registration Statement or
     any post-effective amendment thereto, when the same has become effective,
     (B) of any request by the Commission for amendments to the Registration
     Statement or amendments or supplements to the Prospectus or for additional
     information relating thereto, (C) of the issuance by the Commission of any
     stop order suspending the effectiveness of the Registration Statement under
     the Act or of the suspension by any state securities commission of the
     qualification of the Transfer Restricted Securities for offering or sale in
     any jurisdiction, or the initiation of any proceeding for any of the
     preceding purposes, and (D) of the existence of any fact or the happening
     of any event that makes any statement of a material fact made in the
     Registration Statement, the Prospectus, any amendment or supplement thereto
     or any document incorporated by reference therein untrue, or that requires
     the making of any additions to or changes in the Registration Statement in
     order to make the

                                       13
<PAGE>

     statements therein not misleading, or that requires the making of any
     additions to or changes in the Prospectus in order to make the statements
     therein, in the light of the circumstances under which they were made, not
     misleading. If at any time the Commission shall issue any stop order
     suspending the effectiveness of the Registration Statement, or any state
     securities commission or other regulatory authority shall issue an order
     suspending the qualification or exemption from qualification of the
     Transfer Restricted Securities under state securities or Blue Sky laws, the
     Company and the Guarantors shall use their respective reasonable best
     efforts to obtain the withdrawal or lifting of such order at the earliest
     possible time;

               (iv)  subject to Section 6(c)(i), if any fact or event
     contemplated by Section 6(c)(iii)(D) above shall exist or have occurred,
     prepare a supplement or post-effective amendment to the Registration
     Statement or related Prospectus or any document incorporated therein by
     reference or file any other required document so that, as thereafter
     delivered to the purchasers of Transfer Restricted Securities, the
     Prospectus will not contain an untrue statement of a material fact or omit
     to state any material fact necessary to make the statements therein, in the
     light of the circumstances under which they were made, not misleading;

               (v)   furnish to each Holder whose Transfer Restricted Securities
     have been included in a Shelf Registration Statement (in the case of the
     Shelf Registration Statement) and the Initial Purchasers, before filing
     with the Commission, copies of any Registration Statement or any Prospectus
     included therein or any amendments or supplements to any such Registration
     Statement or Prospectus (including all documents incorporated by reference
     after the initial filing of such Registration Statement), which documents
     will be subject to the review and comment of such Persons for a period of
     at least five Business Days, and the Company will not file any such
     Registration Statement or Prospectus or any amendment or supplement to any
     such Registration Statement or Prospectus (including all such documents
     incorporated by reference) to which such Persons shall reasonably object
     within five Business Days after the receipt thereof (or two Business Days
     with respect to the Initial Purchasers in connection with an Exchange Offer
     Registration Statement).  Any of such Persons shall be deemed to have
     reasonably objected to such filing if such Registration Statement,
     amendment,

                                       14
<PAGE>

     Prospectus or supplement, as applicable, as proposed to be filed, contains
     an untrue statement of a material fact or omits to state any material fact
     necessary to make the statements therein not misleading or fails to comply
     with the applicable requirements of the Act;

               (vi)   promptly prior to the filing of any document that is to be
     incorporated by reference into a Registration Statement or Prospectus,
     provide copies of such document to each Holder whose Transfer Restricted
     Securities have been included in a Shelf Registration Statement and the
     Initial Purchasers (in the case of the Shelf Registration Statement), make
     the Company's and the Guarantors' representatives available for discussion
     of such document and other customary due diligence matters, and include
     such information in such document prior to the filing thereof as such
     Persons may reasonably request;

               (vii)  make available, at reasonable times, for inspection by
     each Holder whose Transfer Restricted Securities have been included in a
     Shelf Registration Statement and the Initial Purchasers (in the case of the
     Shelf Registration Statement), and any attorney or accountant retained by
     such Persons, all financial and other records, pertinent corporate
     documents of the Company and the Guarantors and cause the Company's and the
     Guarantors' officers, directors and employees to supply all information
     reasonably requested by any such Holder, attorney or accountant in
     connection with such Registration Statement or any post-effective amendment
     thereto subsequent to the filing thereof and prior to its effectiveness;

               (viii) if requested by any Holders whose Transfer Restricted
     Securities have been included in a Shelf Registration Statement or the
     Initial Purchasers (in the case of the Shelf Registration Statement)
     promptly include in any Registration Statement or Prospectus, pursuant to a
     supplement or post-effective amendment if necessary, such information as
     such Persons may reasonably request to have included therein, including,
     without limitation, information relating to the "Plan of Distribution" of
     the Transfer Restricted Securities; and make all required filings of such
     Prospectus supplement or post-effective amendment as soon as practicable
     after the Company is notified of the matters to be included in such
     Prospectus supplement or post-effective amendment;

                                       15
<PAGE>

               (ix) furnish to each Holder whose Transfer Restricted Securities
     have been included in a Shelf Registration Statement (in the case of the
     Shelf Registration Statement) and the Initial Purchasers, without charge,
     at least one copy of the Registration Statement, as first filed with the
     Commission, and of each amendment thereto, including all documents
     incorporated by reference therein and all exhibits (including exhibits
     incorporated therein by reference);

               (x)  deliver to each Holder whose Transfer Restricted Securities
     have been included in a Shelf Registration Statement (in the case of the
     Shelf Registration Statement) and the Initial Purchasers, without charge,
     as many copies of the Prospectus (including each preliminary prospectus)
     and any amendment or supplement thereto as such Persons reasonably may
     request; the Company and the Guarantors hereby consent to the use (in
     accordance with law) of the Prospectus and any amendment or supplement
     thereto by each selling Holder in connection with the offering and the sale
     of the Transfer Restricted Securities covered by the Prospectus or any
     amendment or supplement thereto;

               (xi) upon the request of any Holder whose Transfer Restricted
     Securities have been included in a Shelf Registration Statement (in the
     case of the Shelf Registration Statement), (A) enter into such agreements
     (including underwriting agreements) and make such representations and
     warranties and take all such other actions in connection therewith in order
     to expedite or facilitate the disposition of the Transfer Restricted
     Securities pursuant to any applicable Registration Statement contemplated
     by this Agreement and (B) use their respective reasonable best efforts to
     cause to be furnished a customary legal opinion of counsel to the Company
     and a customary comfort letter from the Company's independent auditors, in
     each case as may be reasonably requested by any such Person in connection
     with any sale or resale pursuant to any applicable Registration Statement.
     In such connection, the Company and the Guarantors shall deliver such other
     documents and certificates as may be reasonably requested by the selling
     Holders to evidence compliance with the matters referred to above and with
     any customary conditions contained in any agreement entered into by the
     Company and the Guarantors pursuant to this clause (xi);

                                       16
<PAGE>

               (xii)  prior to any public offering of Transfer Restricted
     Securities, cooperate with the selling Holders and their counsel in
     connection with the registration and qualification of the Transfer
     Restricted Securities under the securities or Blue Sky laws of such
     jurisdictions as the selling Holders may request and do any and all other
     acts or things necessary or advisable to enable the disposition in such
     jurisdictions of the Transfer Restricted Securities covered by the
     applicable Registration Statement; provided, however, that neither the
     Company nor any Guarantor shall be required to register or qualify as a
     foreign corporation where they are not now so qualified or to take any
     action that would subject them to the service of process in suits or to
     taxation, other than as to matters and transactions relating to the
     Registration Statement, in any jurisdiction where they are not now so
     subject;

               (xiii) in connection with any sale of Transfer Restricted
     Securities that will result in such securities no longer being Transfer
     Restricted Securities, cooperate with the Holders to facilitate the timely
     preparation and delivery of certificates representing Transfer Restricted
     Securities to be sold and not bearing any restrictive legends; and to
     register such Transfer Restricted Securities in such denominations and such
     names as the selling Holders may request at least two Business Days prior
     to such sale of Transfer Restricted Securities;

               (xiv)  use their respective reasonable best efforts to cause the
     disposition of the Transfer Restricted Securities covered by the
     Registration Statement to be registered with or approved by such other
     governmental agencies or authorities as may be necessary to enable the
     seller or sellers thereof to consummate the disposition of such Transfer
     Restricted Securities, subject to the proviso contained in clause (xii)
     above;

               (xv)   provide a CUSIP number for all Transfer Restricted
     Securities not later than the effective date of a Registration Statement
     covering such Transfer Restricted Securities and provide the Trustee under
     the Indenture with printed certificates for the Transfer Restricted
     Securities which are in a form eligible for deposit with the Depository
     Trust Company;

                                       17
<PAGE>

               (xvi)   otherwise use their respective reasonable best efforts to
     comply with all applicable rules and regulations of the Commission, and
     make generally available to their security holders with regard to any
     applicable Registration Statement, as soon as practicable, a consolidated
     earnings statement meeting the requirements of Rule 158 (which need not be
     audited) covering a twelve-month period beginning after the effective date
     of the Registration Statement (as such term is defined in paragraph (c) of
     Rule 158 under the Act);

               (xvii)  cause the Indenture to be qualified under the TIA not
     later than the effective date of the first Registration Statement required
     by this Agreement and, in connection therewith, cooperate with the Trustee
     and the Holders to effect such changes to the Indenture as may be required
     for such Indenture to be so qualified in accordance with the terms of the
     TIA; and execute and use their respective reasonable best efforts to cause
     the Trustee to execute, all documents that may be required to effect such
     changes and all other forms and documents required to be filed with the
     Commission to enable such Indenture to be so qualified in a timely manner;
     and

               (xviii) provide promptly to each Holder, upon request, each
     document filed with the Commission pursuant to the requirements of Section
     13 or Section 15(d) of the Exchange Act.

          (d)  Restrictions on Holders.  Each Holder agrees by acquisition of a
               -----------------------
Transfer Restricted Security that, upon receipt of the notice referred to in
Section 6(c)(iii)(C) or any notice from the Company of the existence of any fact
of the kind described in Section 6(c)(iii)(D) hereof (in each case, a
"Suspension Notice"), such Holder will forthwith discontinue disposition of
 -----------------
Transfer Restricted Securities pursuant to the applicable Registration Statement
until (i) such Holder has received copies of the supplemented or amended
Prospectus contemplated by Section 6(c)(iv) hereof, or (ii) such Holder is
advised in writing by the Company that the use of the Prospectus may be resumed,
and has received copies of any additional or supplemental filings that are
incorporated by reference in the Prospectus (in each case, the "Recommencement
                                                                --------------
Date").  Each Holder receiving a Suspension Notice hereby agrees that it will
----
either (i) destroy any Prospectuses, other than permanent file copies, then in
such Holder's possession which have been replaced by the Company with more
recently dated Prospectuses or (ii) deliver to the Company (at the Company's
expense) all copies, other than permanent file copies, then in such

                                       18
<PAGE>

Holder's possession of the Prospectus covering such Transfer Restricted
Securities that was current at the time of receipt of the Suspension Notice. The
time period regarding the effectiveness of such Registration Statement set forth
in Section 3 or 4 hereof, as applicable, shall be extended by a number of days
equal to the number of days in the period from and including the date of
delivery of the Suspension Notice to the date of delivery of the Recommencement
Date.

SECTION 7.  REGISTRATION EXPENSES

          (a)  All expenses incident to the Company's and the Guarantors'
performance of or compliance with this Agreement will be borne by the Company,
regardless of whether a Registration Statement becomes effective, including
without limitation: (i) all registration and filing fees and expenses; (ii) all
fees and expenses of compliance with federal securities and state Blue Sky or
securities laws; (iii) all expenses of printing (including printing certificates
for the Exchange Notes to be issued in the Exchange Offer and printing of
Prospectuses), messenger and delivery services and telephone; (iv) all fees and
disbursements of counsel for the Company and the Guarantors; (v) all application
and filing fees in connection with listing the Exchange Notes on a national
securities exchange or automated quotation system pursuant to the requirements
hereof; and (vi) all fees and disbursements of independent certified public
accountants of the Company and the Guarantors (including the expenses of any
special audit and comfort letters required by or incident to such performance).

          The Company will, in any event, bear its and the Guarantors' internal
expenses (including, without limitation, all salaries and expenses of its
officers and employees performing legal or accounting duties), the expenses of
any annual audit and the fees and expenses of any Person, including special
experts, retained by the Company or the Guarantors.

          (b)  In connection with any Shelf Registration Statement required by
this Agreement, the Company and the Guarantors will reimburse the Initial
Purchasers and the Holders of Transfer Restricted Securities who are selling or
reselling Initial Notes or Exchange Notes pursuant to the "Plan of Distribution"
contained in Shelf Registration Statement, as applicable, for the reasonable
fees and disbursements of not more than one counsel, who shall be chosen by the
Holders of a majority in principal amount of the Transfer Restricted Securities
for whose benefit such Registration Statement is being prepared.

                                       19
<PAGE>

SECTION 8.  INDEMNIFICATION

           (a) The Company and the Guarantors agree, jointly and severally, to
indemnify and hold harmless each Holder, its directors, officers and each
Person, if any, who controls such Holder (within the meaning of Section 15 of
the Act or Section 20 of the Exchange Act), from and against any and all losses,
claims, damages, liabilities, judgments, (including without limitation, any
legal or other expenses incurred in connection with investigating or defending
any matter, including any action that could give rise to any such losses,
claims, damages, liabilities or judgments) caused by any untrue statement or
alleged untrue statement of a material fact contained in any Registration
Statement, preliminary prospectus or Prospectus (or any amendment or supplement
thereto) provided by the Company to any Holder or any prospective purchaser of
Exchange Notes or registered Initial Notes, or caused by any omission or alleged
omission to state therein a material fact required to be stated therein or
necessary to make the statements therein not misleading, except insofar as such
losses, claims, damages, liabilities or judgments are caused by an untrue
statement or omission or alleged untrue statement or omission that is based upon
information relating to any of the Holders furnished in writing to the Company
by any of the Holders.

           (b) Each Holder of Transfer Restricted Securities agrees, severally
and not jointly, to indemnify and hold harmless the Company and the Guarantors,
and their respective directors and officers, and each person, if any, who
controls (within the meaning of Section 15 of the Act or Section 20 of the
Exchange Act) the Company, or the Guarantors to the same extent as the foregoing
indemnity from the Company and the Guarantors set forth in Section 8(a) above,
but only with reference to information relating to such Holder furnished in
writing to the Company by such Holder expressly for use in any Registration
Statement. In no event shall any Holder, its directors, officers or any Person
who controls such Holder be liable or responsible for any amount in excess of
the amount by which the total amount received by such Holder with respect to its
sale of Transfer Restricted Securities pursuant to a Registration Statement
exceeds (i) the amount paid by such Holder for such Transfer Restricted
Securities and (ii) the amount of any damages that such Holder, its directors,
officers or any Person who controls such Holder has otherwise been required to
pay by reason of such untrue or alleged untrue statement or omission or alleged
omission.

           (c) In case any action shall be commenced involving any person in
respect of which indemnity may be sought pursuant to Section 8(a) or 8(b) (the
"indemnified party"), the indemnified party shall promptly notify the person
 -----------------
against

                                       20
<PAGE>

whom such indemnity may be sought (the "indemnifying party") in writing and the
                                        ------------------
indemnifying party shall assume the defense of such action, including the
employment of counsel reasonably satisfactory to the indemnified party and the
payment of all fees and expenses of such counsel, as incurred (except that in
the case of any action in respect of which indemnity may be sought pursuant to
both Sections 8(a) and 8(b), a Holder shall not be required to assume the
defense of such action pursuant to this Section 8(c), but may employ separate
counsel and participate in the defense thereof, but the fees and expenses of
such counsel, except as provided below, shall be at the expense of the Holder).
Any indemnified party shall have the right to employ separate counsel in any
such action and participate in the defense thereof, but the fees and expenses of
such counsel shall be at the expense of the indemnified party unless (i) the
employment of such counsel shall have been specifically authorized in writing by
the indemnifying party, (ii) the indemnifying party shall have failed to assume
the defense of such action or employ counsel reasonably satisfactory to the
indemnified party or (iii) the named parties to any such action (including any
impleaded parties) include both the indemnified party and the indemnifying
party, and the indemnified party shall have been advised by such counsel that
there may be one or more legal defenses available to it which are different from
or additional to those available to the indemnifying party (in which case the
indemnifying party shall not have the right to assume the defense of such action
on behalf of the indemnified party).  In any such case, the indemnifying party
shall not, in connection with any one action or separate but substantially
similar or related actions in the same jurisdiction arising out of the same
general allegations or circumstances, be liable for the fees and expenses of
more than one separate firm of attorneys (in addition to any local counsel) for
all indemnified parties and all such fees and expenses shall be reimbursed as
they are incurred.  Such firm shall be designated in writing by the Holders of a
majority of the Transfer Restricted Securities covered by the applicable
Registration Statement, in the case of the parties indemnified pursuant to
Section 8(a), and by the Company and Guarantors, in the case of parties
indemnified pursuant to Section 8(b). The indemnifying party shall indemnify and
hold harmless the indemnified party from and against any and all losses, claims,
damages, liabilities and judgments by reason of any settlement of any action (i)
effected with its written consent or (ii) effected without its written consent
if the settlement is entered into more than twenty business days after the
indemnifying party shall have received a request from the indemnified party for
reimbursement for the fees and expenses of counsel (in any case where such fees
and expenses are at the expense of the indemnifying party) and, prior to the
date of such settlement, the indemnifying party shall have failed to comply with
such reimbursement request. No indemnifying party shall, without the prior
written consent of the indemnified party, effect any settlement or compromise
of, or consent to the entry of judgment with respect to, any pending or
threatened action in respect

                                       21
<PAGE>

of which the indemnified party is or could have been a party and indemnity or
contribution may be or could have been sought hereunder by the indemnified
party, unless such settlement, compromise or judgment (i) includes an
unconditional release of the indemnified party from all liability on claims that
are or could have been the subject matter of such action and (ii) does not
include a statement as to or an admission of fault, culpability or a failure to
act, by or on behalf of the indemnified party.

          (d)  To the extent that the indemnification provided for in this
Section 8 is unavailable to an indemnified party in respect of any losses,
claims, damages, liabilities or judgments referred to therein, then each
indemnifying party, in lieu of indemnifying such indemnified party, shall
contribute to the amount paid or payable by such indemnified party as a result
of such losses, claims, damages, liabilities or judgments (i) in such proportion
as is appropriate to reflect the relative benefits received by the Company and
the Guarantors, on the one hand, and the Holders, on the other hand, from their
sale of Transfer Restricted Securities or (ii) if the allocation provided by
clause 8(d)(i) is not permitted by applicable law, in such proportion as is
appropriate to reflect not only the relative benefits referred to in clause
8(d)(i) above but also the relative fault of the Company and the Guarantors, on
the one hand, and of the Holder, on the other hand, in connection with the
statements or omissions which resulted in such losses, claims, damages,
liabilities or judgments, as well as any other relevant equitable
considerations.  The relative fault of the Company and the Guarantors, on the
one hand, and of the Holder, on the other hand, shall be determined by reference
to, among other things, whether the untrue or alleged untrue statement of a
material fact or the omission or alleged omission to state a material fact
relates to information supplied by the Company or such Guarantors], on the one
hand, or by the Holder, on the other hand, and the parties' relative intent,
knowledge, access to information and opportunity to correct or prevent such
statement or omission.

          The Company, the Guarantors and each Holder agree that it would not be
just and equitable if contribution pursuant to this Section 8(d) were determined
by pro rata allocation (even if the Holders were treated as one entity for such
purpose) or by any other method of allocation which does not take account of the
equitable considerations referred to in the immediately preceding paragraph.
The amount paid or payable by an indemnified party as a result of the losses,
claims, damages, liabilities or judgments referred to in the immediately
preceding paragraph shall be deemed to include, subject to the limitations set
forth above, any legal or other expenses incurred by such indemnified party in
connection with investigating or defending any matter, including any action that
could have given rise to such losses, claims, damages, liabilities or judgments.
Notwithstanding the provisions of this

                                       22
<PAGE>

Section 8, no Holder, its directors, its officers or any Person, if any, who
controls such Holder shall be required to contribute, in the aggregate, any
amount in excess of the amount by which the total received by such Holder with
respect to the sale of Transfer Restricted Securities pursuant to a Registration
Statement exceeds (i) the amount paid by such Holder for such Transfer
Restricted Securities and (ii) the amount of any damages which such Holder has
otherwise been required to pay by reason of such untrue or alleged untrue
statement or omission or alleged omission. No person guilty of fraudulent
misrepresentation (within the meaning of Section 11(f) of the Act) shall be
entitled to contribution from any person who was not guilty of such fraudulent
misrepresentation. The Holders' obligations to contribute pursuant to this
Section 8(d) are several in proportion to the respective principal amount of
Transfer Restricted Securities held by each Holder hereunder and not joint.

SECTION 9.  UNDERWRITTEN REGISTRATIONS

            (a)  If any of the Transfer Restricted Securities covered by a Shelf
Registration Statement are to be sold in an Underwritten Registration, the
managing underwriters shall be selected by the Company; provided, that such
managing underwriters must be reasonably satisfactory to the Holders of a
majority in aggregate principal amount at maturity of the Transfer Restricted
Securities to be included in such offering.

            (b)  No Holder may participate in any Underwritten Registration,
unless such Holder: (i) agrees to sell its Transfer Restricted Securities on the
basis reasonably provided in any underwriting arrangements approved in
accordance with paragraph (a) above; and (ii) completes and executes all
questionnaires, powers of attorney, indemnities, underwriting agreements and
other documents reasonably required under the terms of such underwriting
arrangements.

SECTION 10.  MISCELLANEOUS

             (a)  Remedies.  The Company and the Guarantors acknowledge and
                  --------
agree that any failure by the Company and/or the Guarantors to comply with their
respective obligations under Sections 3 and 4 hereof may result in material
irreparable injury to the Initial Purchasers or the Holders for which there is
no adequate remedy at law, that it will not be possible to measure damages for
such injuries precisely and that, in the event of any such failure, the Initial
Purchasers or any Holder may obtain such relief as may be required to
specifically enforce the Company's and the Guarantors' obligations under
Sections 3 and 4 hereof. The

                                       23
<PAGE>

Company and the Guarantors further agree to waive the defense in any action for
specific performance that a remedy at law would be adequate.

          (b)  No Inconsistent Agreements.  Neither the Company nor any
               --------------------------
Guarantor will, on or after the date of this Agreement, enter into any agreement
with respect to its securities that is inconsistent with the rights granted to
the Holders in this Agreement or otherwise conflicts with the provisions hereof.
Except as described in the Offering Memorandum, neither the Company nor any
Guarantor has previously entered into any agreement granting any registration
rights with respect to its securities to any Person. The rights granted to the
Holders hereunder do not in any way conflict with and are not inconsistent with
the rights granted to the holders of the Company's and the Guarantors'
securities under any agreement in effect on the date hereof.

          (c)  Amendments and Waivers.  The provisions of this Agreement may not
               ----------------------
be amended, modified or supplemented, and waivers or consents to or departures
from the provisions hereof may not be given unless (i) in the case of Section 5
hereof and this Section 10(c)(i), the Company has obtained the written consent
of Holders of all outstanding Transfer Restricted Securities and (ii) in the
case of all other provisions hereof, the Company has obtained the written
consent of Holders of a majority of the outstanding principal amount of Transfer
Restricted Securities (excluding Transfer Restricted Securities held by the
Company or its Affiliates).  Notwithstanding the foregoing, a waiver or consent
to departure from the provisions hereof that relates exclusively to the rights
of Holders whose Transfer Restricted Securities are being tendered pursuant to
the Exchange Offer, and that does not affect directly or indirectly the rights
of other Holders whose Transfer Restricted Securities are not being tendered
pursuant to such Exchange Offer, may be given by the Holders of a majority of
the outstanding principal amount of Transfer Restricted Securities subject to
such Exchange Offer.

          (d)  Third Party Beneficiary.  The Holders shall be third party
               -----------------------
beneficiaries to the agreements made hereunder between the Company and the
Guarantors, on the one hand, and the Initial Purchasers, on the other hand, and
shall have the right to enforce such agreements directly to the extent they may
deem such enforcement necessary or advisable to protect its rights or the rights
of Holders hereunder.

          (e)  Notices.  All notices and other communications provided for or
               -------
permitted hereunder shall be made in writing by hand-delivery, first-class mail

                                       24
<PAGE>

(registered or certified, return receipt requested), telex, telecopier, or air
courier guaranteeing overnight delivery:

               (i)  if to a Holder, at the address set forth on the records of
     the Registrar under the Indenture, with a copy to the Registrar under the
     Indenture; and

               (ii) if to the Company or the Guarantors:

                       iPCS, Inc.
                       111 E. First Street
                       Genesco, Illinois 61254
                       Telecopier No.: (309) 945-1650
                       Attention: President

                       With a copy to:

                       Mayer, Brown & Platt
                       190 South LaSalle Street
                       Chicago, Illinois 60603
                       Telecopier No.: (312) 701-7711
                       Attention: Paul W. Theiss
                                  Robert J. Wild

          All such notices and communications shall be deemed to have been duly
given: at the time delivered by hand, if personally delivered; five Business
Days after being deposited in the mail, postage prepaid, if mailed; when receipt
acknowledged, if telecopied; and on the next business day, if timely delivered
to an air courier guaranteeing overnight delivery.

          Copies of all such notices, demands or other communications shall be
concurrently delivered by the Person giving the same to the Trustee at the
address specified in the Indenture.

          (f)  Successors and Assigns.  This Agreement shall inure to the
               ----------------------
benefit of and be binding upon the successors and assigns of each of the
parties, including without limitation and without the need for an express
assignment, subsequent Holders; provided, that nothing herein shall be deemed to
permit any assignment, transfer or other disposition of Transfer Restricted
Securities in violation of the terms hereof or of the Purchase Agreement or the
Indenture. If any transferee

                                       25
<PAGE>

of any Holder shall acquire Transfer Restricted Securities in any manner,
whether by operation of law or otherwise, such Transfer Restricted Securities
shall be held subject to all of the terms of this Agreement, and by taking and
holding such Transfer Restricted Securities such Person shall be conclusively
deemed to have agreed to be bound by and to perform all of the terms and
provisions of this Agreement, including the restrictions on resale set forth in
this Agreement and, if applicable, the Purchase Agreement or Indenture, as the
case may be, and such Person shall be entitled to receive the benefits hereof.

          (g)  Counterparts.  This Agreement may be executed in any number of
               ------------
counterparts and by the 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.

          (h)  Headings.  The headings in this Agreement are for convenience of
               --------
reference only and shall not limit or otherwise affect the meaning hereof.

          (i)  Governing Law.  THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED
               -------------
IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO THE
CONFLICT OF LAW RULES THEREOF.

          (j)  Severability.  In the event that any one or more of the
               ------------
provisions contained herein, or the application thereof in any circumstance, is
held invalid, illegal or unenforceable, the validity, legality and
enforceability of any such provision in every other respect and of the remaining
provisions contained herein shall not be affected or impaired thereby.

          (k)  Entire Agreement.  This Agreement is intended by the parties as a
               ----------------
final expression of their agreement and intended to be a complete and exclusive
statement of the agreement and understanding of the parties hereto in respect of
the subject matter contained herein.  There are no restrictions, promises,
warranties or undertakings, other than those set forth or referred to herein
with respect to the registration rights granted with respect to the Transfer
Restricted Securities.  This Agreement supersedes all prior agreements and
understandings between the parties with respect to such subject matter.

                                       26
<PAGE>

          IN WITNESS WHEREOF, the parties have executed this Agreement as of the
date first written above.

                                   Very truly yours,

                                   iPCS, INC.

                                   By: /s/ Timothy M. Yager
                                      -----------------------------
                                      Name:  Timothy M. Yager
                                      Title: President and Chief
                                             Executive Officer

                                   iPCS EQUIPMENT, INC.

                                   By: /s/ Timothy M. Yager
                                      -----------------------------
                                      Name:  Timothy M. Yager
                                      Title: President and Chief
                                             Executive Officer

                                   iPCS WIRELESS, INC.

                                   By: /s/ Timothy M. Yager
                                      -----------------------------
                                      Name:  Timothy M. Yager
                                      Title: President and Chief
                                             Executive Officer
<PAGE>

DONALDSON, LUFKIN & JENRETTE
  SECURITIES CORPORATION
TD SECURITIES (USA) INC.

By: Donaldson, Lufkin & Jenrette
     Securities Corporation

    By: /s/ David P. Costanzo
       -------------------------------
       Name:  David P. Costanzo
       Title: Senior Vice President

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