Document:

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                                                                    EXHIBIT 4.8
                                                                 EXECUTION COPY

                          REGISTRATION RIGHTS AGREEMENT

                            Dated as of June 20, 2003

                                      among

                         CENTENNIAL COMMUNICATIONS CORP.

                      CENTENNIAL CELLULAR OPERATING CO. LLC

                     CENTENNIAL PUERTO RICO OPERATIONS CORP.

                                       and

                         CREDIT SUISSE FIRST BOSTON LLC

                         BANC OF AMERICA SECURITIES LLC

                           J.P. MORGAN SECURITIES INC.

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                          REGISTRATION RIGHTS AGREEMENT

                  THIS REGISTRATION RIGHTS AGREEMENT (the "Agreement") is made
and entered into June 20, 2003, among CENTENNIAL COMMUNICATIONS CORP., a
Delaware Corporation ("Centennial"), CENTENNIAL CELLULAR OPERATING CO. LLC, a
Delaware corporation ("Centennial Cellular" and together with Centennial, the
"Issuers"), CENTENNIAL PUERTO RICO OPERATIONS CORP., a Delaware corporation (the
"Guarantor" and together with the Issuers, the "Companies"), and CREDIT SUISSE
FIRST BOSTON LLC, BANC OF AMERICA SECURITIES LLC and J.P. MORGAN SECURITIES INC.
(the "Initial Purchasers").

                  This Agreement is made pursuant to the Purchase Agreement
dated June 16, 2003, among the Issuers and the Initial Purchasers (the "Purchase
Agreement"), which provides for the sale by the Issuers to the Initial
Purchasers of an aggregate of $500,000,000 principal amount of the Company's
10 1/8% Senior Notes due 2013 (the "Notes") and the guarantee of the obligations
of Centennial Cellular under the Indenture and the Notes by the Guarantor (the
"Guarantee" and, together with the Notes, the "Securities"). In order to induce
the Initial Purchasers to enter into the Purchase Agreement, the Issuers have
agreed to provide to the Initial Purchasers and their direct and indirect
transferees the registration rights set forth in this Agreement. The execution
of this Agreement is a condition to the closing under the Purchase Agreement.

                  In consideration of the foregoing, the parties hereto agree as
follows:

                  1.       Definitions.
                           ------------

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

                  "1933 Act" shall mean the Securities Act of 1933, as amended
from time to time.

                  "1934 Act" shall mean the Securities Exchange Act of 1934, as
amended from time to time.

                   "Additional Interest" shall have the meaning set forth in
Section 2(d).

                  "Centennial" shall have the meaning set forth in the preamble
and shall also include Centennial's successor.

                  "Centennial Cellular" shall have the meaning set forth in the
preamble and shall also include Centennial Cellular's successors.

                  "Companies" shall have the meaning set forth in the preamble
and shall also include the Companies' successors.

                  "Closing Date" shall mean the Closing Date as defined in the
Purchase Agreement.

                  "Exchange Dates" shall have the meaning set forth in Section
2(a)(ii).

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                  "Exchange Offer" shall mean the exchange offer by the Issuers
of Exchange Securities for Registrable Securities pursuant to Section 2(a)
hereof.

                  "Exchange Offer Registration" shall mean a registration under
the 1933 Act effected pursuant to Section 2(a) hereof.

                  "Exchange Offer Registration Statement" shall mean an exchange
offer registration statement on Form S-4 (or, if applicable, on another
appropriate form) and all amendments and supplements to such registration
statement, in each case including the Prospectus contained therein, all exhibits
thereto and all material incorporated by reference therein.

                  "Exchange Securities" shall mean securities issued by the
Companies under the Indenture containing terms identical to the Securities
(except that the Exchange Securities will not contain restrictions on transfer)
and to be offered to Holders of Securities in exchange for Securities pursuant
to the Exchange Offer.

                  "Filing Date" means (i) with respect to an Exchange Offer
Registration Statement or the Shelf Registration Statement required to be filed
pursuant to Section 2(b)(i) or (ii), the earlier of the date of the filing
thereof with the SEC and the 120th day after the Closing Date and (ii) with
respect to the Shelf Registration Statement required to be filed pursuant to
Section 2(b)(iii), the 60th day after the delivery of a notice pursuant to
Section 2(b)(iii).

                  "Guarantee" shall have the meaning set forth in the preamble.

                  "Guarantor" shall have the meaning set forth in the preamble.

                  "Holder" shall mean the Initial Purchasers, for so long as
they own any Registrable Securities, and each of their successors, assigns and
direct and indirect transferees who become registered owners of Registrable
Securities under the Indenture; provided that for purposes of Sections 4 and 5
of this Agreement, the term "Holder" shall include Participating Broker-Dealers
(as defined in Section 4(a)).

                  "Indenture" shall mean the Indenture relating to the
Securities dated as of June 20, 2003 among the Companies and U.S. Bank National
Association, as trustee, and as the same may be amended from time to time in
accordance with the terms thereof.

                  "Issuers" shall have the meaning set forth in the preamble and
shall also include the successors of each of the Issuers.

                  "Majority Holders" shall mean the Holders of a majority of the
aggregate principal amount of outstanding Registrable Securities; provided that
whenever the consent or approval of Holders of a specified percentage of
Registrable Securities is required hereunder, Registrable Securities held by the
Companies or any of their affiliates (as such term is defined in Rule 405 under
the 1933 Act) (other than the Initial Purchasers or subsequent Holders of
Registrable Securities if such subsequent holders are deemed to be such
affiliates solely by reason of their holding of such Registrable Securities)
shall

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not be counted in determining whether such consent or approval was given by the
Holders of such required percentage or amount.

                  "Notes" shall have the meaning set forth in the preamble.

                  "Participating Broker-Dealer" shall have the meaning set forth
in Section 4(a).

                  "Person" shall mean an individual, partnership, limited
liability company, corporation, trust or unincorporated organization, or a
government or agency or political subdivision thereof.

                  "Initial Purchasers" shall have the meaning set forth in the
preamble.

                  "Purchase Agreement" shall have the meaning set forth in the
preamble.

                  "Prospectus" shall mean the prospectus included in a
Registration Statement, including any preliminary prospectus, and any such
prospectus as amended or supplemented by any prospectus supplement, including a
prospectus supplement with respect to the terms of the offering of any portion
of the Registrable Securities covered by a Shelf Registration Statement, and by
all other amendments and supplements to such prospectus, and in each case
including all material incorporated by reference therein.

                  "Registrable Securities" shall mean the Securities; provided,
however, that the Securities shall cease to be Registrable Securities (i) when a
Registration Statement with respect to such Securities shall have been declared
effective under the 1933 Act and such Securities shall have been disposed of
pursuant to such Registration Statement, (ii) when such Securities have been
sold to the public pursuant to Rule 144(k) (or any similar provision then in
force, but not Rule 144A) under the 1933 Act or (iii) when such Securities shall
have ceased to be outstanding.

                  "Registration Expenses" shall mean any and all expenses
incident to performance of or compliance by the Companies with this Agreement,
including without limitation: (i) all SEC, stock exchange or National
Association of Securities Dealers, Inc. registration and filing fees, (ii) all
fees and expenses incurred in connection with compliance with state securities
or blue sky laws (including reasonable fees and disbursements of counsel for any
underwriters or Holders in connection with blue sky qualification of any of the
Exchange Securities or Registrable Securities), (iii) all expenses of any
Persons in preparing or assisting in preparing, word processing, printing and
distributing any Registration Statement, any Prospectus, any amendments or
supplements thereto, any underwriting agreements, securities sales agreements
and other documents relating to the performance of and compliance with this
Agreement, (iv) all rating agency fees, (v) all fees and disbursements relating
to the qualification of the Indenture under applicable securities laws, (vi) the
fees and disbursements of the Trustee and its counsel, (vii) the fees and
disbursements of counsel for the Companies and, in the case of a Shelf
Registration Statement, the fees and disbursements of one counsel for the
Holders (which counsel shall be selected by the Majority Holders and which
counsel may also be counsel for the Initial Purchasers) and (viii) the fees and
disbursements of the independent public accountants of the Companies, including
the expenses of any special

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audits or "cold comfort" letters required by or incident to such performance and
compliance, but excluding fees and expenses of counsel to the underwriters
(other than fees and expenses set forth in clause (ii) above) or the Holders and
underwriting discounts and commissions and transfer taxes, if any, relating to
the sale or disposition of Registrable Securities by a Holder.

                  "Registration Statement" shall mean any registration statement
of the Companies that covers any of the Exchange Securities or Registrable
Securities pursuant to the provisions of this Agreement and all amendments and
supplements to any such Registration Statement, including post-effective
amendments, in each case including the Prospectus contained therein, all
exhibits thereto and all material incorporated by reference therein.

                  "Securities" shall have the meaning set forth in the preamble.

                  "SEC" shall mean the Securities and Exchange Commission.

                  "Shelf Registration" shall mean a registration effected
pursuant to Section 2(b) hereof.

                  "Shelf Registration Statement" shall mean a "shelf"
registration statement of the Companies pursuant to the provisions of Section
2(b) of this Agreement which covers all of the Registrable Securities (but no
other securities unless approved by the Holders whose Registrable Securities are
covered by such Shelf Registration Statement) on an appropriate form under Rule
415 under the 1933 Act, or any similar rule that may be adopted by the SEC, and
all amendments and supplements to such registration statement, including
post-effective amendments, in each case including the Prospectus contained
therein, all exhibits thereto and all material incorporated by reference
therein.

                  "Trustee" shall mean the trustee with respect to the
Securities under the Indenture.

                  "Underwriter" shall have the meaning set forth in Section 3
hereof.

                  "Underwritten Registration" or "Underwritten Offering" shall
mean a registration in which Registrable Securities are sold to an Underwriter
for reoffering to the public.

                  2.       Registration Under the 1933 Act.

                  (a) To the extent not prohibited by any applicable law or
applicable interpretation of the Staff of the SEC, the Companies shall use their
best efforts to cause to be filed an Exchange Offer Registration Statement
covering the offer by the Companies to the Holders to exchange all of the
Registrable Securities for Exchange Securities and to have such Registration
Statement remain effective until the closing of the Exchange Offer. The
Companies shall commence the Exchange Offer promptly after the Exchange Offer
Registration Statement has been declared effective by the SEC and use their best
efforts to have the Exchange Offer consummated not later than 210 days following
the Closing Date.

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                  The Companies shall commence the Exchange Offer by mailing the
related exchange offer Prospectus and accompanying documents to each Holder
stating, in addition to such other disclosures as are required by applicable
law:

                  (i) that the Exchange Offer is being made pursuant to this
         Registration Rights Agreement and that all Registrable Securities
         validly tendered will be accepted for exchange;

                  (ii) the dates of acceptance for exchange (which shall be a
         period of at least 20 business days from the date such notice is
         mailed) (the "Exchange Dates");

                  (iii) that any Registrable Security not tendered will remain
         outstanding and continue to accrue interest, but will not retain any
         rights under this Registration Rights Agreement;

                  (iv) that Holders electing to have a Registrable Security
         exchanged pursuant to the Exchange Offer will be required to surrender
         such Registrable Security, together with the enclosed letters of
         transmittal, to the institution and at the address (located in the
         Borough of Manhattan, The City of New York) specified in the notice
         prior to the close of business on the last Exchange Date; and

                  (v) that Holders will be entitled to withdraw their election,
         not later than the close of business on the last Exchange Date, by
         sending to the institution and at the address (located in the Borough
         of Manhattan, The City of New York) specified in the notice a telegram,
         telex, facsimile transmission or letter setting forth the name of such
         Holder, the principal amount of Registrable Securities delivered for
         exchange and a statement that such Holder is withdrawing his election
         to have such Securities exchanged.

                  As soon as practicable after the last Exchange Date, the
Companies shall:

                  (i) accept for exchange Registrable Securities or portions
         thereof tendered and not validly withdrawn pursuant to the Exchange
         Offer; and

                  (ii) deliver, or cause to be delivered, to the Trustee for
         cancellation all Registrable Securities or portions thereof so accepted
         for exchange by the Companies and issue, and cause the Trustee to
         promptly authenticate and mail to each Holder, an Exchange Security
         equal in principal amount to the principal amount of the Registrable
         Securities surrendered by such Holder.

The Companies shall use their best efforts to complete the Exchange Offer as
provided above and shall comply with the applicable requirements of the 1933
Act, the 1934 Act and other applicable laws and regulations in connection with
the Exchange Offer. The Exchange Offer shall not be subject to any conditions,
other than that the Exchange Offer does not violate applicable law or any
applicable interpretation of the Staff of the SEC. The Companies shall inform
the Initial Purchasers of the names and addresses of the Holders to whom the
Exchange Offer is made, and the Initial Purchasers shall have the right, subject
to applicable law, to contact such Holders and otherwise facilitate the tender
of Registrable Securities in the Exchange Offer.

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                  (b) In the event that (i) the Companies determine that the
Exchange Offer Registration provided for in Section 2(a) above is not available
or may not be consummated as soon as practicable after the last Exchange Date
because it would violate applicable law or the applicable interpretations of the
Staff of the SEC, (ii) the Exchange Offer is not for any other reason
consummated within 210 days after the Closing Date or (iii) if (A) any Initial
Purchaser holds any Securities acquired by it that have, or that are reasonably
likely to be determined to have, the status of an unsold allotment in an initial
distribution, or (B) any Holder is not entitled to participate in the Exchange
Offer, and any such Holder or Placement Agent so requests in writing on or prior
to the 60th day after the consummation of the Exchange Offer, the Companies
shall use their best efforts to cause to be filed as soon as practicable after
receipt of such notice, a Shelf Registration Statement providing for the sale by
the Holders of all of the Registrable Securities and shall use their best
efforts to have such Shelf Registration Statement declared effective by the SEC.
In the event the Companies are required to file a Shelf Registration Statement
solely as a result of the matters referred to in clause (iii) of the preceding
sentence, the Companies shall file and use their best efforts to have declared
effective by the SEC both an Exchange Offer Registration Statement pursuant to
Section 2(a) with respect to all Registrable Securities and a Shelf Registration
Statement (which may be a combined Registration Statement with the Exchange
Offer Registration Statement) with respect to offers and sales of Registrable
Securities held by the Initial Purchasers or such other Holders after completion
of the Exchange Offer. The Companies agree to use their best efforts to keep the
Shelf Registration Statement continuously effective until the expiration of the
period referred to in Rule 144(k) with respect to the Registrable Securities or
such shorter period that will terminate when all of the Registrable Securities
covered by the Shelf Registration Statement have been sold pursuant to the Shelf
Registration Statement. The Companies further agree to supplement or amend the
Shelf Registration Statement if required by the rules, regulations or
instructions applicable to the registration form used by the Companies for such
Shelf Registration Statement or by the 1933 Act or by any other rules and
regulations thereunder for shelf registration or if reasonably requested by a
Holder with respect to information relating to such Holder, and to use their
best efforts to cause any such amendment to become effective and such Shelf
Registration Statement to become usable as soon as thereafter practicable. The
Companies agree to furnish to the Holders of Registrable Securities copies of
any such supplement or amendment promptly after its being used or filed with the
SEC.

                  (c) The Companies shall pay all Registration Expenses in
connection with the registration pursuant to Section 2(a) and Section 2(b). Each
Holder shall pay all underwriting discounts and commissions and transfer taxes,
if any, relating to the sale or disposition of such Holder's Registrable
Securities pursuant to the Exchange Offer Registration Statement or the Shelf
Registration Statement.

                  (d) An Exchange Offer Registration Statement pursuant to
Section 2(a) hereof or a Shelf Registration Statement pursuant to Section 2(b)
hereof will not be deemed to have become effective unless it has been declared
effective by the SEC; provided, however, that, if, after it has been declared
effective, the offering of Registrable Securities pursuant to a Shelf
Registration Statement is interfered with by any stop order, injunction or other
order or requirement of the SEC or any other governmental agency or court, such
Registration Statement will be deemed not to have become effective during the
period of such interference until the offering of Registrable Securities
pursuant to such Registration Statement may legally resume.

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In the event the Exchange Offer is not consummated and the Shelf Registration
Statement is not declared effective as set forth below, then, the interest rate
on the Securities will be increased (the "Additional Interest") as follows:

                  (i) if (A) neither the Exchange Offer Registration Statement
         nor a Shelf Registration Statement has been filed with the SEC on or
         prior to the 120th day after the Closing Date or (B) the Issuers are
         required to file a Shelf Registration Statement pursuant to Section
         2(b)(iii) hereof and such Shelf Registration Statement is not filed on
         or prior to the Filing Date applicable thereto then, commencing on the
         day after either such 120th day in the case of clause (A) or such
         Filing Date in the case of clause (B), Additional Interest shall accrue
         on the principal amount of the Registrable Securities at a rate of
         0.50% per annum; or

                  (ii) if (A) neither the Exchange Offer Registration Statement
         nor a Shelf Registration Statement is declared effective by the SEC on
         or prior to the 180th day after the Closing Date or (B) the Issuers are
         required to file a Shelf Registration Statement pursuant to Section
         2(b)(iii) hereof and such Shelf Registration Statement is not declared
         effective by the SEC on or prior to the 60th day following the Filing
         Date applicable thereto then, commencing on the day after either such
         180th day in the case of clause (A) or the Filing Date in the case of
         clause (B), Additional Interest shall accrue on the principal amount of
         the Registrable Securities at a rate of 0.50% per annum; or

                  (iii) subject to Sections 2(f) and 2(g) if (A) the Issuers
         have not exchanged Exchange Securities for all Securities validly
         tendered in accordance with the terms of the Exchange Offer on or prior
         to the 210th day after the Closing Date or (B) if applicable, the Shelf
         Registration Statement has been declared effective and such Shelf
         Registration Statement ceases to be effective at any time prior to the
         second anniversary of the Closing Date (or, if earlier, the date when
         all Securities have been disposed of thereunder), then Additional
         Interest shall accrue on the principal amount of the Registrable
         Securities at a rate of 0.50% per annum commencing on (x) the day after
         the 210th day after the Closing Date, in the case of (A) above, or (y)
         the day such Shelf Registration Statement ceases to be effective in the
         case of (B) above;

provided, further, that the Companies shall in no event be required to pay
additional interest for more than one event in clauses (i), (ii), or (iii) at
any one time; provided further, however, that (1) upon the filing of the
Exchange Offer Registration Statement or a Shelf Registration Statement (in the
case of clause (i)(A) above) or a Shelf Registration Statement (in the case of
clause (ii)(B) above, (2) upon the effectiveness of the Exchange Offer
Registration or a Shelf Registration Statement (in the case of clause (ii)(A)
above) or a Shelf Registration (in the case of (i)(B) above), or (3) upon the
exchange of Exchange Securities for all Securities tendered (in the case of
clause (iii)(A) above), or (4) upon the effectiveness of the Shelf Registration
Statement which had ceased to remain effective (in the case of clause (iii)(B)
above), Additional Interest on the Securities as a result of such clause (or the
relevant subclause thereof), as the case may be, shall cease to accrue.

                  (e) Without limiting the remedies available to the Initial
Purchasers and the Holders, the Companies acknowledge that any failure by the
Companies to comply with their

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obligations under Section 2(a) and Section 2(b) 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 Issuers' obligations under Section 2(a) and Section
2(b) hereof.

                  (f) No Holder of Registrable Securities may include any of its
Registrable Securities in any Shelf Registration unless and until such Holder
furnishes to the Companies, in writing within 30 days after receipt of a request
therefor, the information with respect to such Holder specified in Items 507 and
508 (as applicable) of Regulation S-K under the 1933 Act and any other
applicable rules, regulations or policies of the SEC for use in connection with
any Shelf Registration or Prospectus included therein, on a form to be provided
by the Companies. No Holder of Registrable Securities shall be entitled to
Additional Interest pursuant to Section 2(d) hereof unless and until such Holder
shall have provided all such information. Each selling Holder agrees to furnish
promptly to the Companies additional information to be disclosed so that the
information previously furnished to the Companies by such Holder does not
contain any untrue statement of a material fact or omit to state a material fact
required to be stated therein or necessary to make the statements therein not
misleading.

                  (g) Additional Interest shall not accrue with respect to an
event listed in Sections 2(d) hereof (each, a "Registration Default") if (i)
such Registration Default under Section 2(d)(iii)(B) hereof occurs because of
the filing of a post-effective amendment to such Registration Statement to
incorporate annual audited financial information with respect to the Companies
where such post-effective amendment is not yet effective and needs to be
declared effective to permit Holders to use the related Prospectus, (ii) such
Registration Default occurs because of the occurrence of other material events
or developments with respect to the Companies that would need to be described in
such Registration Statement or the related Prospectus, and the effectiveness of
such Registration Statement is reasonably required to be suspended while such
Registration Statement and related Prospectus are amended or supplemented to
reflect such events or developments, (iii) such Registration Default results
from the suspension of the effectiveness of such Registration Statement because
of the existence of material events or developments with respect to the
Companies or any of their affiliates, the disclosure of which the Companies
determine in good faith would have a material adverse effect on the business,
operations or prospects of the Companies, or (iv) such Registration Default
results from the suspension of the effectiveness of such Registration Statement
because the Companies do not wish to disclose publicly a pending material
business transaction that has not yet been publicly disclosed; provided,
however, that if any such Registration Default exists and continues on more than
45 consecutive days and an aggregate of 90 days in any 12-month period,
Additional Interest shall accrue and be payable in accordance with Section 2(d)
hereof from the 46th or 91st day, as the case may be, on which any such
Registration Default exists, and shall continue to accrue until the date on
which such Registration Default is cured.

                  3.       Registration Procedures.

                  In connection with the obligations of the Companies with
respect to the Registration Statements pursuant to Section 2(a) and Section 2(b)
hereof, the Companies shall as expeditiously as possible:

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                  (a) prepare and file with the SEC a Registration Statement on
         the appropriate form under the 1933 Act, which form (x) shall be
         selected by the Companies, (y) shall, in the case of a Shelf
         Registration, be available for the sale of the Registrable Securities
         by the selling Holders thereof and (z) shall comply as to form in all
         material respects with the requirements of the applicable form and
         include all financial statements required by the SEC to be filed
         therewith, and use their best efforts to cause such Registration
         Statement to become effective and remain effective in accordance with
         Section 2 hereof;

                  (b) prepare and file with the SEC such amendments and
         post-effective amendments to each Registration Statement as may be
         necessary to keep such Registration Statement effective for the
         applicable period and cause each Prospectus to be supplemented by any
         required prospectus supplement and, as so supplemented, to be filed
         pursuant to Rule 424 under the 1933 Act; to keep each Prospectus
         current during the period described under Section 4(3) and Rule 174
         under the 1933 Act that is applicable to transactions by brokers or
         dealers with respect to the Registrable Securities or Exchange
         Securities;

                  (c) in the case of a Shelf Registration, furnish to each
         Holder of Registrable Securities, to counsel for the Initial
         Purchasers, to counsel for the Holders and to each Underwriter of an
         Underwritten Offering of Registrable Securities, if any, without
         charge, as many copies of each Prospectus, including each preliminary
         Prospectus, and any amendment or supplement thereto and such other
         documents as such Holder or Underwriter may reasonably request, in
         order to facilitate the public sale or other disposition of the
         Registrable Securities; and the Companies consent to the use of such
         Prospectus and any amendment or supplement thereto in accordance with
         applicable law by each of the selling Holders of Registrable Securities
         and any such Underwriters in connection with the offering and sale of
         the Registrable Securities covered by and in the manner described in
         such Prospectus or any amendment or supplement thereto in accordance
         with applicable law;

                  (d) use their best efforts to register or qualify the
         Registrable Securities under all applicable state securities or "blue
         sky" laws of such jurisdictions as any Holder of Registrable Securities
         covered by a Registration Statement shall reasonably request in writing
         by the time the applicable Registration Statement is declared effective
         by the SEC, to cooperate with such Holders in connection with any
         filings required to be made with the National Association of Securities
         Dealers, Inc. and do any and all other acts and things which may be
         reasonably necessary or advisable to enable such Holder to consummate
         the disposition in each such jurisdiction of such Registrable
         Securities owned by such Holder; provided, however, that the Companies
         shall not be required to (i) qualify as a foreign corporation or as a
         dealer in securities in any jurisdiction where it would not otherwise
         be required to qualify but for this Section 3(d), (ii) file any general
         consent to service of process or (iii) subject itself to taxation in
         any such jurisdiction if it is not so subject;

                  (e) in the case of a Shelf Registration, notify each Holder of
         Registrable Securities, counsel for the Holders and counsel for the
         Initial Purchasers promptly and, if requested by any such Holder or
         counsel, confirm such advice in writing (i) when a

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         Registration Statement has become effective and when any post-effective
         amendment thereto has been filed and becomes effective, (ii) of any
         request by the SEC or any state securities authority for amendments and
         supplements to a Registration Statement and Prospectus or for
         additional information after the Registration Statement has become
         effective, (iii) of the issuance by the SEC or any state securities
         authority of any stop order suspending the effectiveness of a
         Registration Statement or the initiation of any proceedings for that
         purpose, (iv) if, between the effective date of a Registration
         Statement and the closing of any sale of Registrable Securities covered
         thereby, the representations and warranties of the Companies contained
         in any underwriting agreement, securities sales agreement or other
         similar agreement, if any, relating to the offering cease to be true
         and correct in all material respects or if the Companies receive any
         notification with respect to the suspension of the qualification of the
         Registrable Securities for sale in any jurisdiction or the initiation
         of any proceeding for such purpose, (v) of the existence or happening
         of any event during the period a Shelf Registration Statement is
         effective, in the opinion of the Companies, which makes any material
         statement made in such Registration Statement or the related Prospectus
         untrue or which requires the making of any changes in such Registration
         Statement or Prospectus in order to make the statements therein not
         misleading (which shall include any pending undisclosed material
         business transaction that the Companies, upon the advice of Counsel,
         elect not to disclose publicly) and (vi) of any determination by the
         Companies that a post-effective amendment to a Registration Statement
         would be appropriate;

                  (f) make every reasonable effort to obtain the withdrawal of
         any order suspending the effectiveness of a Registration Statement at
         the earliest possible moment and provide immediate notice to each
         Holder of the withdrawal of any such order;

                  (g) in the case of a Shelf Registration, furnish to each
         Holder of Registrable Securities, without charge, at least one
         conformed copy of each Registration Statement and any post-effective
         amendment thereto (without documents incorporated therein by reference
         or exhibits thereto, unless requested);

                  (h) in the case of a Shelf Registration, cooperate with the
         selling Holders of Registrable Securities to facilitate the timely
         preparation and delivery of certificates representing Registrable
         Securities to be sold and not bearing any restrictive legends and
         enable such Registrable Securities to be in such denominations
         (consistent with the provisions of the Indenture) and registered in
         such names as the selling Holders may reasonably request at least one
         business day prior to the closing of any sale of Registrable
         Securities;

                  (i) in the case of a Shelf Registration, upon the occurrence
         of any event contemplated by Section 3(e)(v) hereof, use their best
         efforts to prepare and file with the SEC a supplement or post-effective
         amendment to a Registration Statement or the related Prospectus or any
         document incorporated therein by reference or file any other required
         document so that, as thereafter delivered to the purchasers of the
         Registrable Securities, such Prospectus will not contain any untrue
         statement of a material fact or omit to state a material fact necessary
         to make the statements therein, in light of the circumstances under
         which they were made, not misleading. The Companies agree to notify the
         Holders to

                                       10
<PAGE>

         suspend use of the Prospectus as promptly as practicable after the
         occurrence of such an event, and the Holders hereby agree to suspend
         use of the Prospectus until the Companies have amended or supplemented
         the Prospectus to correct such misstatement or omission;

                  (j) a reasonable time prior to the filing of any Registration
         Statement, any Prospectus, any amendment to a Registration Statement or
         amendment or supplement to a Prospectus or any document which is to be
         incorporated by reference into a Registration Statement or a Prospectus
         after initial filing of a Registration Statement, provide copies of
         such document to the Initial Purchasers and their counsel (and, in the
         case of a Shelf Registration Statement, the Holders and their counsel)
         and make such of the representatives of the Companies as shall be
         reasonably requested by the Initial Purchasers or their counsel (and,
         in the case of a Shelf Registration Statement, the Holders or their
         counsel) available for discussion of such document, and shall not at
         any time file or make any amendment to the Registration Statement, any
         Prospectus or any amendment of or supplement to a Registration
         Statement or a Prospectus or any document which is to be incorporated
         by reference into a Registration Statement or a Prospectus, of which
         the Initial Purchasers and their counsel (and, in the case of a Shelf
         Registration Statement, the Holders and their counsel) shall not have
         previously been advised and furnished a copy or to which the Initial
         Purchasers or their counsel (and, in the case of a Shelf Registration
         Statement, the Holders or their counsel) shall object.

                  (k) obtain a CUSIP number for all Exchange Securities or
         Registrable Securities, as the case may be, not later than the
         effective date of a Registration Statement;

                  (l) cause the Indenture to be qualified under the Trust
         Indenture Act of 1939, as amended (the "TIA"), in connection with the
         registration of the Exchange Securities or Registrable Securities, as
         the case may be, cooperate with the Trustee and the Holders to effect
         such changes to the Indenture as may be required for the Indenture to
         be so qualified in accordance with the terms of the TIA and execute,
         and use their best efforts to cause the Trustee to execute, all
         documents as may be required to effect such changes and all other forms
         and documents required to be filed with the SEC to enable the Indenture
         to be so qualified in a timely manner;

                  (m) in the case of a Shelf Registration, make available for
         inspection by a representative of the Holders of the Registrable
         Securities, any Underwriter participating in any disposition pursuant
         to such Shelf Registration Statement, and attorneys and accountants
         designated by the Holders, at reasonable times and in a reasonable
         manner, all financial and other records, pertinent documents and
         properties of the Companies and subsidiaries of the Companies, and
         cause the respective officers, directors and employees of the Companies
         to supply all information reasonably requested by any such
         representative, Underwriter, attorney or accountant in connection with
         a Shelf Registration Statement;

                  (n) in the case of a Shelf Registration, use their best
         efforts to cause all Registrable Securities to be listed on any
         securities exchange or any automated quotation system on which similar
         securities issued by the Companies are then listed if requested

                                       11
<PAGE>

         by the Majority Holders, to the extent such Registrable Securities
         satisfy applicable listing requirements;

                  (o) use their best efforts to cause the Exchange Securities or
         Registrable Securities, as the case may be, to be rated by two
         nationally recognized statistical rating organizations (as such term is
         defined in Rule 436(g)(2) under the 1933 Act);

                  (p) if reasonably requested by any Holder of Registrable
         Securities covered by a Registration Statement, (i) promptly
         incorporate in a Prospectus supplement or post-effective amendment such
         information with respect to such Holder as such Holder reasonably
         requests to be included therein and (ii) make all required filings of
         such Prospectus supplement or such post-effective amendment as soon as
         the Companies have received notification of the matters to be
         incorporated in such filing; and

                  (q) in the case of a Shelf Registration, enter into such
         customary agreements and take all such other actions in connection
         therewith (including those requested by the Holders of a majority of
         the Registrable Securities being sold) in order to expedite or
         facilitate the disposition of such Registrable Securities including,
         but not limited to, an Underwritten Offering and in such connection,
         (i) to the extent possible, make such representations and warranties to
         the Holders and any Underwriters of such Registrable Securities with
         respect to the business of the Companies and their subsidiaries, the
         Registration Statement, Prospectus and documents incorporated by
         reference or deemed incorporated by reference, if any, in each case, in
         form, substance and scope as are customarily made by issuers to
         underwriters in underwritten offerings and confirm the same if and when
         requested, (ii) obtain opinions of counsel to the Companies (which
         counsel and opinions, in form, scope and substance, shall be reasonably
         satisfactory to the Holders and such Underwriters and their respective
         counsel) addressed to each selling Holder and Underwriter of
         Registrable Securities, covering the matters customarily covered in
         opinions requested in underwritten offerings, (iii) obtain "cold
         comfort" letters from the independent certified public accountants of
         the Companies (and, if necessary, any other certified public accountant
         of any subsidiary of the Companies, or of any business acquired by the
         Companies for which financial statements and financial data are or are
         required to be included in the Registration Statement) addressed to
         each selling Holder and Underwriter of Registrable Securities, such
         letters to be in customary form and covering matters of the type
         customarily covered in "cold comfort" letters in connection with
         underwritten offerings, and (iv) deliver such documents and
         certificates as may be reasonably requested by the Holders of a
         majority in principal amount of the Registrable Securities being sold
         or the Underwriters, and which are customarily delivered in
         underwritten offerings, to evidence the continued validity of the
         representations and warranties of the Companies made pursuant to clause
         (i) above and to evidence compliance with any customary conditions
         contained in an underwriting agreement.

                  In the case of a Shelf Registration Statement, the Issuers may
require each Holder of Registrable Securities to furnish to the Issuers such
information regarding the Holder and the proposed distribution by such Holder of
such Registrable Securities as the Issuers may from time to time reasonably
request in writing.

                                       12
<PAGE>

                  In the case of a Shelf Registration Statement, each Holder
agrees that, upon receipt of any notice from the Issuers of the happening of any
event of the kind described in Section 3(e)(v) hereof, such Holder will
forthwith discontinue disposition of Registrable Securities pursuant to a Shelf
Registration Statement until such Holder's receipt of the copies of the
supplemented or amended Prospectus contemplated by Section 3(i) hereof, and, if
so directed by the Issuers, such Holder will deliver to the Issuers (at their
expense) all copies in its possession, other than permanent file copies then in
such Holder's possession, of the Prospectus covering such Registrable Securities
current at the time of receipt of such notice. If the Issuers shall give any
such notice to suspend the disposition of Registrable Securities pursuant to a
Shelf Registration Statement, the Companies shall extend the period during which
the Shelf Registration Statement shall be maintained effective pursuant to this
Agreement by the number of days during the period from and including the date of
the giving of such notice to and including the date when the Holders shall have
received copies of the supplemented or amended Prospectus necessary to resume
such dispositions. The Issuers may suspend the disposition Registrable
Securities pursuant to a Shelf Registration Statement for periods not in excess
of 45 consecutive days and for not more than an aggregate of 90-days in any
12-month period.

                  The Holders of Registrable Securities covered by a Shelf
Registration Statement who desire to do so may sell such Registrable Securities
in an Underwritten Offering. In any such Underwritten Offering, the investment
banker or investment bankers and manager or managers (the "Underwriters") that
will administer the offering will be selected by the Majority Holders of the
Registrable Securities included in such offering.

                  4.       Participation of Broker-Dealers in Exchange Offer.

                  (a) The Staff of the SEC has taken the position that any
broker-dealer that receives Exchange Securities for its own account in the
Exchange Offer in exchange for Securities that were acquired by such
broker-dealer as a result of market-making or other trading activities (a
"Participating Broker-Dealer"), may be deemed to be an "underwriter" within the
meaning of the 1933 Act and must deliver a prospectus meeting the requirements
of the 1933 Act in connection with any resale of such Exchange Securities.

                  The Companies understand that it is the Staff's position that
if the Prospectus contained in the Exchange Offer Registration Statement
includes a plan of distribution containing a statement to the above effect and
the means by which Participating Broker-Dealers may resell the Exchange
Securities, without naming the Participating Broker-Dealers or specifying the
amount of Exchange Securities owned by them, such Prospectus may be delivered by
Participating Broker-Dealers to satisfy their prospectus delivery obligation
under the 1933 Act in connection with resales of Exchange Securities for their
own accounts, so long as the Prospectus otherwise meets the requirements of the
1933 Act.

                  (b) In light of the above, notwithstanding the other
provisions of this Agreement, the Companies agree that the provisions of this
Agreement as they relate to a Shelf Registration shall also apply to an Exchange
Offer Registration to the extent, and with such reasonable modifications thereto
as may be, reasonably requested by the Initial Purchasers or by one or more
Participating Broker-Dealers, in each case as provided in clause (ii) below, in
order

                                       13
<PAGE>
to expedite or facilitate the disposition of any Exchange Securities by
Participating Broker-Dealers consistent with the positions of the Staff recited
in Section 4(a) above; provided that:

                  (i) the Companies shall not be required to amend or supplement
         the Prospectus contained in the Exchange Offer Registration Statement,
         as would otherwise be contemplated by Section 3(i), for a period
         exceeding 120 days after the last Exchange Date (as such period may be
         extended pursuant to the penultimate paragraph of Section 3 of this
         Agreement) and Participating Broker-Dealers shall not be authorized by
         the Issuers to deliver and shall not deliver such Prospectus after such
         period in connection with the resales contemplated by this Section 4;
         and

                  (ii) the application of the Shelf Registration procedures set
         forth in Section 3 of this Agreement to an Exchange Offer Registration,
         to the extent not required by the positions of the Staff of the SEC or
         the 1933 Act and the rules and regulations thereunder, will be in
         conformity with the reasonable request to the Issuers by the Initial
         Purchasers or with the reasonable request in writing to the Issuers by
         one or more broker-dealers who certify to the Initial Purchasers and
         the Issuers in writing that they anticipate that they will be
         Participating Broker-Dealers; and provided further that, in connection
         with such application of the Shelf Registration procedures set forth in
         Section 3 to an Exchange Offer Registration, the Companies shall be
         obligated (x) to deal only with one entity representing the
         Participating Broker-Dealers, which shall be Credit Suisse First Boston
         LLC unless it elects not to act as such representative, (y) to pay the
         fees and expenses of only one counsel representing the Participating
         Broker-Dealers, which shall be counsel to the Initial Purchasers unless
         such counsel elects not to so act and (z) to cause to be delivered only
         one, if any, "cold comfort" letter with respect to the Prospectus in
         the form existing on the last Exchange Date and with respect to each
         subsequent amendment or supplement, if any, effected during the period
         specified in clause (i) above.

                  (c) The Initial Purchasers shall have no liability to the
Companies or any Holder with respect to any request that it may make pursuant to
Section 4(b) above.

                  5.       Indemnification and Contribution.

                  (a) Each of the Companies, jointly and severally, agrees to
indemnify and hold harmless the Initial Purchasers, each Holder and each Person,
if any, who controls any Initial Purchaser or any Holder within the meaning of
either Section 15 of the 1933 Act or Section 20 of the 1934 Act, or is under
common control with, or is controlled by, any Initial Purchaser or any Holder,
from and against all losses, claims, damages and liabilities (including, without
limitation, any legal or other expenses reasonably incurred by the Initial
Purchasers, any Holder or any such controlling or affiliated Person in
connection with defending or investigating any such action or claim) caused by
any untrue statement or alleged untrue statement of a material fact contained in
any Registration Statement (or any amendment thereto) pursuant to which Exchange
Securities or Registrable Securities were registered under the 1933 Act,
including all documents incorporated therein by reference, 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, or
caused by any untrue statement or alleged untrue statement of a material fact
contained in any Prospectus (as amended or supplemented if the Companies

                                       14
<PAGE>
shall have furnished any amendments or supplements thereto), or caused by any
omission or alleged omission to state therein a material fact necessary to make
the statements therein in light of the circumstances under which they were made
not misleading, except insofar as such losses, claims, damages or liabilities
are caused by any such untrue statement or omission or alleged untrue statement
or omission based upon information relating to the Initial Purchasers or any
Holder furnished to the Issuers in writing through Credit Suisse First Boston
LLC or any selling Holder expressly for use therein. In connection with any
Underwritten Offering permitted by Section 3, the Companies will also indemnify
the Underwriters, if any, selling brokers, dealers and similar securities
industry professionals participating in the distribution, their officers and
directors and each Person who controls such Persons (within the meaning of the
1933 Act and the 1934 Act) to the same extent as provided above with respect to
the indemnification of the Holders, if requested in connection with any
Registration Statement.

                  (b) Each Holder agrees, severally and not jointly, to
indemnify and hold harmless the Companies, the Initial Purchasers and the other
selling Holders, and each of their respective directors, officers who sign the
Registration Statement and each Person, if any, who controls the Companies, any
Initial Purchaser and any other selling Holder within the meaning of either
Section 15 of the 1933 Act or Section 20 of the 1934 Act to the same extent as
the foregoing indemnity from the Companies to the Initial Purchasers and the
Holders, but only with reference to information relating to such Holder
furnished to the Issuers in writing by such Holder expressly for use in any
Registration Statement (or any amendment thereto) or any Prospectus (or any
amendment or supplement thereto).

                  (c) In case any proceeding (including any governmental
investigation) shall be instituted involving any Person in respect of which
indemnity may be sought pursuant to either paragraph (a) or paragraph (b) above,
such Person (the "indemnified party") shall promptly notify the Person against
whom such indemnity may be sought (the "indemnifying party") in writing and the
indemnifying party, upon request of the indemnified party, shall retain counsel
reasonably satisfactory to the indemnified party to represent the indemnified
party and any others the indemnifying party may designate in such proceeding and
shall pay the fees and disbursements of such counsel related to such proceeding.
In any such proceeding, any indemnified party shall have the right to retain its
own counsel, but the fees and expenses of such counsel shall be at the expense
of such indemnified party unless (i) the indemnifying party and the indemnified
party shall have mutually agreed to the retention of such counsel or (ii) the
named parties to any such proceeding (including any impleaded parties) include
both the indemnifying party and the indemnified party and representation of both
parties by the same counsel would be inappropriate due to actual or potential
differing interests between them. It is understood that the indemnifying party
shall not, in connection with any proceeding or related proceedings in the same
jurisdiction, be liable for (a) the fees and expenses of more than one separate
firm (in addition to any local counsel) for the Initial Purchasers and all
Persons, if any, who control any Initial Purchaser within the meaning of either
Section 15 of the 1933 Act or Section 20 of the 1934 Act, (b) the fees and
expenses of more than one separate firm (in addition to any local counsel) for
the Companies, their directors, their officers who sign the Registration
Statement and each Person, if any, who controls the Companies within the meaning
of either such Section and (c) the fees and expenses of more than one separate
firm (in addition to any local counsel) for all Holders and all Persons, if any,
who control any Holders within the meaning of either such Section, and that all
such fees and expenses shall be reimbursed as they

                                       15
<PAGE>

are incurred. In such case involving the Initial Purchasers and Persons who
control the Initial Purchasers, such firm shall be designated in writing by
Credit Suisse First Boston LLC. In such case involving the Holders and such
Persons who control Holders, such firm shall be designated in writing by the
Majority Holders. In all other cases, such firm shall be designated by the
Issuers. The indemnifying party shall not be liable for any settlement of any
proceeding effected without its written consent but, if settled with such
consent or if there be a final judgment for the plaintiff, the indemnifying
party agrees to indemnify the indemnified party from and against any loss or
liability by reason of such settlement or judgment. Notwithstanding the
foregoing sentence, if at any time an indemnified party shall have requested an
indemnifying party to reimburse the indemnified party for fees and expenses of
counsel as contemplated by the second and third sentences of this paragraph, the
indemnifying party agrees that it shall be liable for any settlement of any
proceeding effected without its written consent if (i) such settlement is
entered into more than 30 days after receipt by such indemnifying party of the
aforesaid request and (ii) such indemnifying party shall not have reimbursed the
indemnified party for such fees and expenses of counsel in accordance with such
request prior to the date of such settlement. No indemnifying party shall,
without the prior written consent of the indemnified party, effect any
settlement of any pending or threatened proceeding in respect of which such
indemnified party is or could have been a party and indemnity could have been
sought hereunder by such indemnified party, unless such settlement includes an
unconditional release of such indemnified party from all liability on claims
that are the subject matter of such proceeding.

                  (d) If the indemnification provided for in paragraph (a) or
paragraph (b) of this Section 5 is unavailable to an indemnified party or
insufficient in respect of any losses, claims, damages or liabilities, then each
indemnifying party under such paragraph, in lieu of indemnifying such
indemnified party thereunder, shall contribute to the amount paid or payable by
such indemnified party as a result of such losses, claims, damages or
liabilities in such proportion as is appropriate to reflect the relative fault
of the indemnifying party or parties on the one hand and of the indemnified
party or parties on the other hand in connection with the statements or
omissions that resulted in such losses, claims, damages or liabilities, as well
as any other relevant equitable considerations. The relative fault of the
Companies and the Holders 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 Companies or by the Holders and the parties' relative intent,
knowledge, access to information and opportunity to correct or prevent such
statement or omission. The Holders' respective obligations to contribute
pursuant to this Section 5(d) are several in proportion to the respective
principal amount of Registrable Securities of such Holder that were registered
pursuant to a Registration Statement.

                  (e) The Companies and each Holder agree that it would not be
just or equitable if contribution pursuant to this Section 5 were determined by
pro rata allocation or by any other method of allocation that does not take
account of the equitable considerations referred to in paragraph (d) above. The
amount paid or payable by an indemnified party as a result of the losses,
claims, damages and liabilities referred to in paragraph (d) above shall be
deemed to include, subject to the limitations set forth above, any legal or
other expenses reasonably incurred by such indemnified party in connection with
investigating or defending any such action or claim. Notwithstanding the
provisions of this Section 5, no Holder shall be required to indemnify or
contribute any amount in excess of the amount by which the total price at which

                                       16
<PAGE>

Registrable Securities were sold by such Holder exceeds the amount of any
damages that 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 1933 Act) shall be entitled to contribution from any Person who was not
guilty of such fraudulent misrepresentation. The remedies provided for in this
Section 5 are not exclusive and shall not limit any rights or remedies which may
otherwise be available to any indemnified party at law or in equity.

                  The indemnity and contribution provisions contained in this
Section 5 shall remain operative and in full force and effect regardless of (i)
any termination of this Agreement, (ii) any investigation made by or on behalf
of the Initial Purchasers, any Holder or any Person controlling any Initial
Purchaser or any Holder, or by or on behalf of the Companies, their officers or
directors or any Person controlling the Companies, (iii) acceptance of any of
the Exchange Securities and (iv) any sale of Registrable Securities pursuant to
a Shelf Registration Statement.

                  6.       Miscellaneous.

                  (a) No Inconsistent Agreements. None of the Companies have
entered into, and on or after the date of this Agreement will not enter into,
any agreement which is inconsistent with the rights granted to the Holders of
Registrable Securities in this Agreement or otherwise conflicts with the
provisions hereof. 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 Companies' other issued and outstanding securities under any such
agreements.

                  (b) Amendments and Waivers. The provisions of this Agreement,
including the provisions of this sentence, may not be amended, modified or
supplemented, and waivers or consents to departures from the provisions hereof
may not be given unless the Companies have obtained the written consent of
Holders of at least a majority in aggregate principal amount of the outstanding
Registrable Securities affected by such amendment, modification, supplement,
waiver or consent; provided, however, that no amendment, modification,
supplement, waiver or consent to any departure from the provisions of Section 5
hereof shall be effective as against any Holder of Registrable Securities unless
consented to in writing by such Holder.

                  (c) Notices. All notices and other communications provided for
or permitted hereunder shall be made in writing by hand-delivery, registered
first-class mail, telex, telecopier, or any courier guaranteeing overnight
delivery (i) if to a Holder, at the most current address given by such Holder to
Centennial by means of a notice given in accordance with the provisions of this
Section 6(c), which address initially is, with respect to the Initial
Purchasers, the address set forth in the Purchase Agreement; and (ii) if to the
Companies, initially at the Centennial's address set forth in the Purchase
Agreement and thereafter at such other address, notice of which is given in
accordance with the provisions of this Section 6(c).

                  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 answered back, if telexed; when receipt is

                                       17
<PAGE>

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.

                  (d) Successors and Assigns. This Agreement shall inure to the
benefit of and be binding upon the successors, assigns and transferees 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 Registrable
Securities in violation of the terms of the Purchase Agreement. If any
transferee of any Holder shall acquire Registrable Securities, in any manner,
whether by operation of law or otherwise, such Registrable Securities shall be
held subject to all of the terms of this Agreement, and by taking and holding
such Registrable 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 and such Person shall be entitled to receive the benefits hereof. The
Initial Purchasers (in their capacity as Initial Purchasers) shall have no
liability or obligation to the Companies with respect to any failure by a Holder
to comply with, or any breach by any Holder of, any of the obligations of such
Holder under this Agreement.

                  (e) Purchases and Sales of Securities. During the period of
two years after the Closing Date, the Companies will not resell any of the
Securities which constitute "restricted securities" under Rule 144 that have
been reacquired by any of them, unless the Securities are resold in a
transaction registered under the 1933 Act.

                  (f) Third-Party Beneficiary. The Holders shall be third-party
beneficiaries to the agreements made hereunder between the Companies, 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 it deems such enforcement
necessary or advisable to protect its rights or the rights of Holders hereunder.

                  (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 the
laws of the State of New York.

                  (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.

                                       18
<PAGE>

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

                          CENTENNIAL COMMUNICATIONS CORP.

                          By      /s/ TONY WOLK
                              --------------------------------------------------
                              Name:  Tony Wolk
                              Title: Senior Vice President, General Counsel

                          CENTENNIAL CELLULAR OPERATING CO. LLC]

                          By      /s/ TONY WOLK
                              --------------------------------------------------
                              Name:  Tony Wolk
                              Title: Senior Vice President, General Counsel

                          CENTENNIAL PUERTO RICO OPERATIONS CORP.

                          By      /s/ TONY WOLK
                              --------------------------------------------------
                              Name:  Tony Wolk
                              Title: Senior Vice President, General Counsel

Confirmed and accepted as of
the date first above written:

CREDIT SUISSE FIRST BOSTON LLC
BANC OF AMERICA SECURITIES LLC
J.P. MORGAN SECURITIES INC.

By: CREDIT SUISSE FIRST BOSTON LLC

Acting severally on behalf of itself and the
several Initial Purchasers named herein

By       /s/ J. HOWE
   ---------------------------------
   Name:  J. Howe
   Title: Managing Director

                                       19<PAGE>

                                                                  EXHIBIT 10.1.5

                                                                  EXECUTION COPY

                                 AMENDMENT NO. 4

         AMENDMENT NO. 4, dated as of June 19, 2003 (this "Amendment"), to the
credit agreement dated as of January 7, 1999, as amended and restated as of
February 29, 2000, as amended by Amendment No. 1 dated as of July 28, 2000,
Amendment No. 2 dated as of August 3, 2001 and Amendment No. 3 dated as of
September 5, 2001 (as so amended, as hereby amended and as otherwise amended,
restated, modified or supplemented from time to time, the "Credit Agreement"),
among CENTENNIAL CELLULAR OPERATING CO. LLC, as Borrower; CENTENNIAL PUERTO RICO
OPERATIONS CORP., as PR Borrower; CENTENNIAL COMMUNICATIONS CORP. (formerly
known as Centennial Cellular Corp.), as a Guarantor ("Parent"); the other
Guarantors party thereto; each of the lenders from time to time party thereto
(individually, a "Lender" and, collectively, the "Lenders"); JP MORGAN CHASE
BANK (formerly known as The Chase Manhattan Bank), as co-lead arranger and
co-syndication agent (in such capacity, together with its successors in such
capacity, "JP Morgan Chase"); MERRILL LYNCH & CO. and MERRILL LYNCH, PIERCE,
FENNER & SMITH INCORPORATED, as co-lead arrangers and co-syndication agents (in
such capacity, together with their successors in such capacity, and JP Morgan
Chase, the "Co-Syndication Agents"); BANK OF AMERICA, N.A., as arranger and
administrative agent (in such capacity, together with its successors in such
capacity, the "Administrative Agent", and together with JP Morgan Chase, the
"Amendment Arrangers"); and THE BANK OF NOVA SCOTIA, as documentation agent (in
such capacity, together with its successors in such capacity, the "Documentation
Agent"). Capitalized terms used herein and not otherwise defined shall have the
meanings ascribed to them in the Credit Agreement, as amended hereby.

                                  INTRODUCTION

         (A) Borrower and PR Borrower have requested, and the Majority Lenders
and the Administrative Agent have agreed, to amend the Credit Agreement as
hereinafter set forth.

         (B) From and after the Effective Date (as hereinafter defined) of this
Amendment, the Credit Agreement shall be amended, but only upon and subject to
the terms and conditions set forth herein.

         (C) In consideration of the mutual agreements contained herein and
other good and valuable consideration, the receipt of which is hereby
acknowledged, the parties hereto hereby agree as follows:

                                   ARTICLE I

                       AMENDMENTS TO THE CREDIT AGREEMENT

Section 1.1. Amendments.

         (a) Section 1.01 of the Credit Agreement is hereby amended by inserting
the following new definitions therein in correct alphabetical order:

                  "Amendment No. 4" shall mean Amendment No. 4 dated as of June
                  19, 2003 to this Agreement.

<PAGE>

                  "Amendment No. 4 Effective Date" shall mean the Effective
                  Date, as such term is defined in Amendment No. 4.

                  "Cash Balance" shall mean, at any time, the aggregate amount
                  of all cash and Permitted Investments of Borrower and its
                  Subsidiaries at such time, but only to the extent that such
                  cash and Permitted Investments constitute Pledged Collateral
                  under the Security Agreement.

                  "Senior Exchange Indenture" shall mean the indenture pursuant
                  to which the Senior Exchange Notes are issued.

                  "Senior Exchange Notes" shall have the meaning given to such
                  term in the definition of "Senior Notes" set forth in this
                  Section 1.01.

                  "Senior Exchange Offer" shall have the meaning given to such
                  term in the definition of "Senior Notes" set forth in this
                  Section 1.01.

                  "Senior Notes" shall mean the 10?% Senior Notes due 2013 of
                  Borrower and Parent in an aggregate principal amount of at
                  least $300 million and no more than $600 million issued in
                  accordance with the terms and conditions set forth in the
                  Senior Notes Offering Circular, including the senior notes
                  issued pursuant to a registered exchange offer (the "Senior
                  Exchange Offer") therefor made pursuant to the registration
                  rights agreement entered into in connection with the issuance
                  thereof on the date of issuance thereof (the "Senior Exchange
                  Notes").

                  "Senior Notes Documents" shall mean the Senior Notes Indenture
                  and all other documents relating to the issuance of the Senior
                  Notes.

                  "Senior Notes Indenture" shall mean the Indenture dated June
                  20, 2003 pursuant to which the Senior Notes were (and the
                  Senior Exchange Notes will be) issued.

                  "Senior Notes Offering Circular" shall mean the confidential
                  offering circular, dated as of June 16, 2003, relating to the
                  offering of the Senior Notes.

                  "Senior Notes Proceeds" shall mean the aggregate gross
                  proceeds resulting from all issuances of the Senior Notes.

         (b) The following definitions found in Section 1.01 of the Credit
Agreement are hereby amended to read in their entirety as follows:

                  "Additional Senior Subordinated Notes" shall mean any senior
                  subordinated notes of Borrower or PR Borrower or any senior
                  notes of any direct or indirect parent of Borrower or
                  Centennial Caribbean Holding Corp. for gross proceeds of up to
                  $300.0 million (which $300.0 million shall be reduced by the
                  amount of Senior Notes Proceeds), including without
                  duplication the senior subordinated notes or senior notes (as
                  the case may be) issued pursuant to a registered exchange
                  offer therefor, which notes shall in any event (i) have
                  covenants, events of default, redemption and repurchase
                  provisions and modification provisions in the aggregate not
                  materially less favorable to the Companies and the Lenders
                  than the covenants, events of default, redemption and
                  repurchase provisions and modification provisions of the
                  Senior Subordinated Notes, as reasonably determined by
                  Borrower and PR Borrower, (ii) mature after the Final Maturity
                  Date (or,

                                       2
<PAGE>

                  if later, the final maturity date of any Incremental
                  Facility), (iii) be unsecured, and (iv) in the case of any
                  such notes issued by Borrower or PR Borrower have
                  subordination terms substantially similar to the Senior
                  Subordinated Notes.

                  "Financial Maintenance Covenants" shall mean the covenants set
                  forth in Section 9.11(a) through (d).

                  "Operating Cash Flow" shall mean, for any period:

                  (a) for all purposes other than the calculation of the Total
                  Leverage Ratio in connection with determining the Applicable
                  Margin, the sum (without duplication) of the amounts for such
                  period of Adjusted Net Income, plus, in each case to the
                  extent deducted in calculating such Adjusted Net Income,
                  (x)(1) income tax expense, (2) withholding tax expense
                  incurred in connection with cross border transactions, (3)
                  consolidated interest expense (including in respect of the
                  Senior Subordinated Notes and (if issued by Borrower or any
                  Subsidiary of Borrower) the Additional Senior Subordinated
                  Notes), (4) depreciation and amortization expense, (5) other
                  non-cash items of expense, other than to the extent requiring
                  an accrual or reserve for future cash expenses, (6) monitoring
                  and management fees actually paid to any Permitted Holder as
                  permitted by Section 9.15 all as determined on a consolidated
                  basis for Borrower and its Consolidated Subsidiaries, and (7)
                  all tax expense, interest expense (including accretion of
                  original issue discount), restructuring fees and other charges
                  arising in connection with the Senior Notes (at closing and
                  any time during their term); provided, that the cost of
                  handsets sold to post-paid customers in Puerto Rico or
                  elsewhere shall not be added back to Adjusted Net Income
                  pursuant to any of the foregoing clauses, and minus, to the
                  extent not otherwise deducted in calculating such Adjusted Net
                  Income, (y)(1) cash dividends or other distributions paid by
                  Borrower to Parent pursuant to Section 9.10(c)(i), (2)
                  distributions received from all Minority Interests during such
                  period to the extent included in calculating such Adjusted Net
                  Income, and (3) capital expenditures for wireless handsets
                  purchased by the Obligors and rented to subscribers for rental
                  purposes in Puerto Rico or elsewhere; and

                  (b) for any calculation of the Total Leverage Ratio in
                  connection with determining the Applicable Margin, the sum
                  (without duplication) of the amounts for such period of
                  Adjusted Net Income, plus, in each case to the extent deducted
                  in calculating such Adjusted Net Income, (1) income tax
                  expense, (2) withholding tax expense incurred in connection
                  with cross border transactions, (3) consolidated interest
                  expense (including in respect of the Senior Subordinated Notes
                  and (if issued by Borrower or any Subsidiary of Borrower) the
                  Additional Senior Subordinated Notes), (4) depreciation and
                  amortization expense, (5) other non-cash items of expense,
                  other than to the extent requiring an accrual or reserve for
                  future cash expenses, and (6) monitoring and management fees
                  actually paid to any Permitted Holder as permitted by Section
                  9.15 all as determined on a consolidated basis for Borrower
                  and its Consolidated Subsidiaries; and minus (1) cash
                  dividends or other distributions paid by Borrower to Parent
                  pursuant to Section 9.10(c)(i) and (2) distributions received
                  from all Minority Interests during such period to the extent
                  included in calculating such Adjusted Net Income.

                  Operating Cash Flow shall be calculated on a pro forma basis
                  and otherwise in accordance with GAAP to give effect to any
                  Acquisition or Disposition of any System consummated during
                  the fiscal period of Borrower ended on such Test Date as if
                  each such Acquisition had been effected on the first day of
                  such period and as if each such

                                       3
<PAGE>

                  Disposition had been consummated on the day prior to the first
                  day of such period; provided, that any such pro forma
                  calculation may include adjustments for the pro forma effect
                  of (a) any cost savings accounted for on an annualized basis
                  as a result of an Acquisition by Borrower or any of its
                  Consolidated Subsidiaries which, in the good faith judgment of
                  Borrower (as evidenced by an Officers' Certificate delivered
                  to Administrative Agent), will be eliminated or realized
                  within one year after the date of such transaction (provided
                  that any such cost savings are calculated in accordance with
                  Regulation S-X under the Securities Act of 1933, as amended)
                  or (b) any direct quantifiable savings from the conversion of
                  roaming expense which Borrower will obtain within one year of
                  the transaction in the good faith judgment of Borrower from
                  the Acquisition of a third party which prior to such
                  Acquisition had a contract with Borrower or any of its
                  Consolidated Subsidiaries for roaming services. For purposes
                  of the foregoing sentence, when calculating Operating Cash
                  Flow for any Person or business, Operating Cash Flow and all
                  defined terms used herein (or in any such defined term) shall
                  be deemed to refer to such Person or business.

         (c) The definition of "Change of Control" is hereby amended by
inserting a comma followed by the words "Senior Notes Documents" immediately
after the phrase "Senior Subordinated Notes Financing Documents."

         (d) The definition of "Excess Cash Flow" is hereby amended by inserting
the words "Senior Notes" followed by a comma immediately after the phrase
"Senior Subordinated Notes."

         (e) The following definitions found in Section 1.01 of the Credit
Agreement are hereby deleted in their entirety:

                  "Fixed Charge Coverage Ratio"

                  "Fixed Charges"

                  "Interest Coverage Ratio"

                  "Senior Debt"

                  "Senior Leverage Ratio"

         (f) Section 1.02 of the Credit Agreement is hereby amended by adding at
the end of the first sentence thereof:

                  "; provided that, if Borrower notifies the Administrative
         Agent that Borrower desires to eliminate the effect of any change
         occurring after the date hereof in GAAP or in the application thereof
         (or if the Administrative Agent notifies Borrower that it desires to
         eliminate the effect of any such change), regardless of whether any
         such notice is given before or after such change in GAAP or in the
         application thereof, then the Total Leverage Ratio, the Pro Forma Debt
         Service Coverage Ratio, Operating Cash Flow and all components thereof
         shall be determined on the bases of GAAP as in effect and applied
         before such change shall have become effective."

         (g) Section 2.10(a)(ii) of the Credit Agreement is hereby amended to
read in its entirety as follows:

                                       4
<PAGE>

                  "(ii) Equity Issuance. In an aggregate principal amount equal
         to 50% of the Net Available Proceeds of all Equity Issuances after the
         Effectiveness Date, other than (a) the first $125.0 million of Net
         Available Proceeds received from Equity Issuances after the
         Effectiveness Date and (b) the Net Available Proceeds received from any
         Equity Issuance to the extent that it is effected to maintain
         compliance, or cure non-compliance in accordance with Section 10, with
         the Financial Maintenance Covenant in Section 9.11(d) hereof (provided,
         that the amount of such Net Available Proceeds resulting from such
         Equity Issuance that may be excluded from this subsection (ii) pursuant
         to this clause (b) shall in no event exceed by more than $5.0 million
         the minimum amount required at the time of issuance to maintain
         compliance, or cure non-compliance in accordance with Section 10, with
         the Financial Maintenance Covenant set forth in Section 9.11(d))."

         (h) Section 3.02(a) of the Credit Agreement is hereby amended by adding
the phrase "plus an additional 0.25%" after the phrase "plus the Applicable
Margin" in clauses 3.02(a)(i) and 3.02(a)(ii).

         (i) Section 7.01 (iv) of the Credit Agreement is hereby amended adding
the phrase ", Senior Notes Documents" after the phrase "Parent Financing
Documents" appearing in the third line thereof.

         (j) Section 8 of the Credit Agreement is hereby amended by adding the
following new Section at the end thereof:

         "8.25. Tax Shelter Regulations. Except to the extent Borrower or PR
         Borrower has otherwise notified the Administrative Agent in writing,
         Borrower or PR Borrower, as applicable, does not intend to treat the
         Loans and/or Letters of Credit and the related transactions hereunder
         as being a "reportable transaction" (within the meaning of Treasury
         Regulation Section 1.6011-4)."

         (k) Section 9.01(a) of the Credit Agreement is hereby amended by (i)
replacing the phrase "each of the first three quarterly fiscal periods of each
fiscal year beginning with the fiscal quarter ending November 30, 1998" with
"each quarterly fiscal period of each fiscal year" and (ii) adding, after the
phrase "year-end audit adjustments" and before the close parentheses at the end
thereof, the phrase "and absence of footnotes."

         (l) Section 9.01 of the Credit Agreement is hereby amended by (i)
deleting the word "and" at the end of clause (p) thereof, (ii) redesignating
clause (q) thereof as clause (r) and (iii) adding, immediately following clause
(p) thereof, a new clause (q) to read in its entirety as follows:

                  "(q) Monthly Report. Within 15 days after the end of each
         calendar month, a summary report setting forth a summary of the
         consolidated operations and financial performance of the Borrower and
         its Subsidiaries for such month; and"

         (m) Section 9.06 of the Credit Agreement is hereby amended (i) by
deleting the word "and" at the end of clause (q) thereof, (ii) replacing the
period at the end of clause (r) thereof with "; and" and (iii) adding,
immediately after clause (r) thereof, a new clause (s) to read in its entirety
as follows:

                  "(s) Borrower or any Subsidiary may effect any Disposition
         (other than any Disposition of Equity Interests in Borrower (unless
         such Equity Interests are acquired by Parent and Parent duly pledges
         such Equity Interests under the Security Agreement) or, except as
         permitted by Section 9.06(q), PR Borrower or any direct parent thereof)
         for fair market value; provided, that (1) the aggregate book value of
         all assets disposed of pursuant to Dispositions permitted under this
         subsection (s) shall not exceed in the aggregate $250.0 million, (2)
         not less than 80% of the consideration received in respect of such
         Disposition is paid in cash, (3) 100% of

                                       5
<PAGE>

         the Net Available Proceeds therefrom are applied within one (1)
         Business Day of receipt thereof to prepay Loans in accordance with
         Section 2.10(b) and (4) the Obligors shall grant to the Administrative
         Agent, for the ratable benefit of the Lenders, a first priority
         security interest in any non-cash consideration received in respect of
         such Disposition, which non-cash consideration shall be deemed Pledged
         Collateral in accordance with the Security Agreement."

         (n) The second to last paragraph of Section 9.07 of the Credit
Agreement is hereby amended by adding the phrase "the Senior Notes Documents,"
immediately after the phrase "Additional Senior Subordinated Notes Documents,".

         (o) Section 9.08(i) of the Credit Agreement is hereby amended by
replacing the reference therein to "$30.0 million" with "$75.0 million".

         (p) Section 9.08(o) of the Credit Agreement is hereby amended by
replacing the phrase "$20.0 million at any time, or with the prior approval of
the terms and conditions thereof by the Administrative Agent and the
Co-Syndication Agents, $50.0 million at any time" with "$50.0 million at any
time (provided that 50% of the Net Available Proceeds from such transactions
exceeding, in the aggregate, $20.0 million shall be applied to prepay Term
Loans, pro rata, in accordance with Section 2.10(b))".

         (q) Section 9.08 of the Credit Agreement is hereby amended by (i)
deleting the word "and" at the end of Section 9.08(p), (ii) replacing the period
at the end of Section 9.08(q) with a semicolon and (iii) adding new subsections
9.08(r) and 9.08(s), which shall read in their entirety as follows:

                  "(r) the Senior Notes and guarantees of the Senior Notes; and

                  (s) Subordinated Debt in an amount not to exceed (i) the
         minimum amount necessary at the time of issuance in order to maintain
         compliance, or cure non-compliance in accordance with Section 10, with
         the Financial Maintenance Covenant in Section 9.11(d); plus (ii) $5.0
         million; provided, that such Subordinated Debt shall include
         subordination terms acceptable to the Administrative Agent."

         (r) The final paragraph of Section 9.08 is hereby amended by replacing
the reference therein to "$30.0 million" with "$60.0 million".

         (s) Section 9.11 of the Credit Agreement is hereby amended to read in
its entirety as follows:

                  "(a) Maximum Total Leverage Ratio. The Total Leverage Ratio
         shall not, as of any Test Date during any period set forth in the table
         below, exceed the ratio set forth opposite such period in the table
         below:

<Table>
<Caption>
PERIOD                                                         RATIO
------                                                         -----
<S>                                                            <C>
3/1/03 - 5/31/03.......................................         7.85
6/1/03 - 8/31/03.......................................         7.65
9/1/03 - 11/30/03......................................         7.25
12/1/03 - 2/28/04......................................         7.15
3/1/04 - 5/31/04.......................................         7.00
6/1/04 - 8/31/04.......................................         6.50
9/1/04 - 11/30/04......................................         6.50
12/1/04 - 2/28/05......................................         6.15
</Table>

                                       6

<PAGE>

<Table>
<Caption>
PERIOD                                                         RATIO
------                                                         -----
<S>                                                            <C>
3/1/05 - 5/31/05.......................................         6.00
6/1/05 - 8/31/05.......................................         5.75
9/1/05 - 11/30/05......................................         5.50
12/1/05 - 2/28/06......................................         5.25
3/1/06 - 5/31/06.......................................         4.25
6/1/06 - 8/31/06.......................................         4.00
9/1/06 - 11/30/06......................................         3.50
12/1/06 - 2/28/07......................................         3.45
3/1/07 and thereafter..................................         2.50
</Table>

         (b) Minimum Pro Forma Debt Service Coverage Ratio. The Pro Forma Debt
Service Coverage Ratio shall not, as of any Test Date during any period set
forth in the table below, be less than the ratio set forth opposite such period
in the table below:

<Table>
<Caption>
PERIOD                                                         RATIO
------                                                         -----
<S>                                                            <C>
3/1/03 - 5/31/03.......................................         1.00
6/1/03 - 8/31/03.......................................         1.00
9/1/03 - 11/30/03......................................         1.00
12/1/03 - 2/28/04......................................         1.00
3/1/04 - 5/31/04.......................................         1.00
6/1/04 - 8/31/04.......................................         1.00
9/1/04 - 11/30/04......................................         1.00
12/1/04 - 2/28/05......................................         1.00
3/1/05 - 5/31/05.......................................         1.00
6/1/05 - 8/31/05.......................................         1.00
9/1/05 - 11/30/05......................................         1.00
12/1/05 and thereafter.................................         1.15
</Table>

         (c) Minimum Operating Cash Flow. The Operating Cash Flow of Borrower
and its Consolidated Subsidiaries shall not, for the four fiscal quarters ending
on any Test Date during any period set forth in the table below, be less than
the amount set forth opposite such period in the table below:

<Table>
<Caption>
PERIOD                                                         AMOUNT
------                                                         ------
<S>                                                        <C>
3/1/03 - 5/31/03.......................................     $200.0 million
6/1/03 - 8/31/03.......................................     $200.0 million
9/1/03 - 11/30/03......................................     $205.0 million
12/1/03 - 2/28/04......................................     $210.0 million
3/1/04 - 5/31/04.......................................     $215.0 million
6/1/04 - 8/31/04.......................................     $220.0 million
9/1/04 - 11/30/04......................................     $225.0 million
12/1/04 - 2/28/05......................................     $230.0 million
3/1/05 - 5/31/05.......................................     $235.0 million
6/1/05 - 8/31/05.......................................     $245.0 million
9/1/05 - 11/30/05......................................     $250.0 million
12/1/05 - 2/28/06......................................     $270.0 million
</Table>

                                       7

<PAGE>
<Table>
<Caption>
PERIOD                                                         AMOUNT
------                                                         ------
<S>                                                            <C>
3/1/06 - 5/31/06.......................................     $310.0 million
6/1/06 - 8/31/06.......................................     $320.0 million
9/1/06 - 11/30/06......................................     $325.0 million
12/1/06 - 2/28/07......................................     $330.0 million
3/1/07 and thereafter..................................     $340.0 million
</Table>

                  In the case of a Disposition, the levels in the table above
         for periods after the sale shall be automatically reduced by an amount
         equal to the operating cash flow attributable to the assets sold in the
         most recently completed twelve (12) month period prior to the date upon
         which the calculation specified in the following sentence is delivered
         pursuant to clause (i) of such sentence. For purposes of the foregoing,
         "operating cash flow" shall be calculated in a manner consistent with
         the definition of "Operating Cash Flow" in this Agreement, which
         calculation (i) shall be delivered to the Administrative Agent at least
         fifteen (15) days prior to the closing of such Disposition, (ii) to the
         extent available, shall be based on historical accounting records of
         Borrower and its Consolidated Subsidiaries for the relevant calculation
         period and (iii) shall be subject to disapproval by the Administrative
         Agent for ten (10) days after it is delivered to the Administrative
         Agent. In case of disapproval, the Administrative Agent and Borrower
         shall negotiate in good faith in order to agree on an acceptable
         calculation and resultant covenant levels within twenty (20) days. If
         the Administrative Agent and Borrower shall not be able to agree on an
         acceptable calculation and resultant covenant levels within such twenty
         (20) day period, then an independent third party mutually acceptable to
         the Administrative Agent and Borrower shall be appointed within five
         (5) days of the expiration of such twenty (20) day period and shall
         determine, within ten (10) days of its appointment, such calculation
         and resultant covenant levels, such third party's determination to be
         binding on the parties hereto.

                  (d) Minimum Liquidity. At no time after the Amendment No. 4
         Effective Date shall the sum of (x) the Cash Balance plus (y) the
         aggregate amount of the Unutilized Revolving Credit Commitments of all
         of the Lenders be less than $45,000,000."

         (t) Section 9.17 of the Credit Agreement is hereby amended by (i)
replacing the comma after the phrase "Marketing Agreements" with the words "or
the", and (ii) deleting the phrase "or the Facilities Agreement" at the end of
such section.

         (u) Section 9.19(c)(i)(z) of the Credit Agreement is hereby amended to
read in its entirety as follows:

                  "(z) the Senior Subordinated Notes Financing Documents as in
         effect on the Original Closing Date, the Additional Senior Subordinated
         Notes Documents, the Parent Refinanced Notes Documents, the Senior
         Notes Documents and any Permitted Refinancing of any thereof so long as
         such restriction in such Additional Senior Subordinated Notes
         Documents, the Parent Refinanced Notes Documents, the Senior Notes
         Documents or such Permitted Refinancing is not more disadvantageous to
         the Creditors or Borrower than the Senior Subordinated Notes Financing
         Documents as in effect on the Original Closing Date or, in the case of
         the Senior Notes Documents or any Permitted Refinancing thereof, the
         Senior Notes Documents as in effect on the Amendment No. 4 Effective
         Date,"

         (v) Section 9.21 of the Credit Agreement is hereby amended by (i)
replacing the word "and" following the phrase "the Additional Senior
Subordinated Notes Documents" with a comma and

                                       8
<PAGE>

(ii) adding, following the words "Parent Refinancing Notes Documents" and before
the comma, the phrase "and the Senior Notes Documents".

         (w) Section 9.23(a) of the Credit Agreement is hereby amended to read
in its entirety as follows:

                  "(a) make any payment or prepayment (optional or otherwise) on
         or with respect to (including any sinking fund payment), or redeem,
         defease or repurchase (whether in cash, securities or other Property)
         or otherwise acquire or retire for value any of, the Senior
         Subordinated Notes, the Parent Subordinated Notes, any Existing Notes,
         any Additional Senior Subordinated Notes, any Parent Refinanced Notes,
         any Senior Notes or any Permitted Refinancing of any of the foregoing,
         except (1) regularly scheduled mandatory payments of interest, (2) the
         conversion or exchange of any Indebtedness into shares of common Equity
         Interests of Parent, and (3) the exchange of Senior Subordinated Notes,
         Additional Senior Subordinated Notes, Parent Refinanced Notes or Senior
         Notes for exchange notes, as contemplated by the respective definitions
         thereof;"

         (x) Section 9.23(b) of the Credit Agreement is hereby amended by adding
the phrase "Senior Notes Documents," immediately after the phrase "Parent
Financing Documents," appearing in the second line of such Section.

         (y) Section 9.23(c) of the Credit Agreement is hereby amended to read
in its entirety as follows:

                  "(c) effect any material change in (i) the Senior Subordinated
         Notes Indenture in connection with the Exchange Offer or enter into an
         Exchange Indenture which is different in any material respect from the
         Senior Subordinated Notes Indenture in connection with the Exchange
         Offer, in each case unless the terms thereof are reasonably acceptable
         to Agents and the Majority Lenders, or (ii) the Senior Notes Indenture
         in connection with the Senior Exchange Offer or enter into a Senior
         Exchange Indenture which is different in any material respect from the
         Senior Notes Indenture in connection with the Senior Exchange Offer, in
         each case unless the terms thereof are reasonably acceptable to Agents
         and the Majority Lenders."

         (z) Section 9.28 of the Credit Agreement is hereby deleted in its
entirety.

         (aa) Section 10(p) of the Credit Agreement is hereby deleted in its
entirety.

         (bb) Section 10 of the Credit Agreement is hereby amended by adding the
following at the end thereof:

         "Notwithstanding anything herein to the contrary, if at any time (i) a
         Default or Event of Default shall occur and be continuing pursuant to
         Section 10(d) solely as a result of any failure of the Obligors to
         comply with Section 9.11(d), (ii) within 5 days of the occurrence of
         such Default or Event of Default (without giving effect to the five (5)
         Business Days grace period contained in Section 10(d) hereof) the
         Obligors shall have received Net Available Proceeds of any Equity
         Issuance or issuance of Subordinated Debt and (iii) following the
         receipt of such Net Available Proceeds the Obligors shall be in
         compliance with Section 9.11(d), then, such Default or Event of Default
         shall be deemed cured and shall cease to exist as of the date of its
         first occurrence and all rights and remedies of the Credit Parties
         under this Agreement and the other Credit Documents consequent thereon
         shall cease to be of any force or effect in respect thereof."

                                       9
<PAGE>

         (cc) Section 12.11 of the Credit Agreement is hereby amended by adding
the following sentence at the end thereof:

                  "Notwithstanding anything herein to the contrary,
         "Information" shall not include, and the Administrative Agent, each
         Lender and each Obligor, may disclose without limitation of any kind,
         any information with respect to the "tax treatment" and "tax structure"
         (in each case, within the meaning of Treasury Regulation Section
         1.6011-4) of the transactions contemplated hereby and all materials of
         any kind (including, without limitation, opinions or other tax
         analyses) that are provided to the Administrative Agent, such Lender or
         such Obligor relating to such tax treatment and tax structure; provided
         that with respect to any document or similar item that in either case
         contains information concerning the tax treatment or tax structure of
         the transaction as well as other information, this sentence shall only
         apply to such portions of the document or similar item that relate to
         the tax treatment or tax structure of the Loans, Letters of Credit and
         transactions contemplated hereby."

         (dd) Exhibit L to the Credit Agreement is hereby amended in its
entirety and replaced with Exhibit L attached hereto.

                                   ARTICLE II

                           AUTHORIZATIONS AND CONSENTS

Section 2.1. Issuance of Senior Notes.

         (a) The Administrative Agent and the Majority Lenders hereby consent to
the issuance of the Senior Notes; provided, that the issuance of the Senior
Notes shall be consummated not later than July 30, 2003.

         (b) The Administrative Agent and the Majority Lenders hereby approve
the terms and forms of the Senior Note Documents delivered to the Administrative
Agent on or prior to the Effective Date.

         Section 2.2. Amended and Restated Security Agreement. The
Administrative Agent and the Majority Lenders hereby consent to the execution
and delivery of the Amended and Restated Security Agreement among the Borrower,
the PR Borrower, each of the Guarantors and the Administrative Agent in the form
of Exhibit A hereto.

                                  ARTICLE III

                              ADDITIONAL AGREEMENTS

In order to induce the Administrative Agent and the Majority Lenders to enter
into this Amendment, the Borrower and each of the Obligors hereby agree as
follows:

Section 3.1. Allocation of Proceeds of Senior Notes. Notwithstanding any other
term or provision contained in the Credit Agreement or the other Credit
Documents, the Senior Notes Proceeds shall be allocated as follows:

                                       10

<PAGE>

         (a) Sixty percent (60%) of the Senior Notes Proceeds shall be applied
in accordance with Section 3.2 below to prepay Term Loans.

         (b) Forty percent (40%) of the Senior Notes Proceeds shall be retained
by the Borrower (i) for the payment of reasonable and customary transaction
costs incurred in connection with the issuance of the Senior Notes, and (ii) for
general corporate purposes in accordance with the terms and provisions of the
Credit Agreement.

Section 3.2. Application of Proceeds of Senior Notes. Notwithstanding any other
term or provision contained in the Credit Agreement or the other Credit
Documents, the portion of the Senior Notes Proceeds allocated to prepay Term
Loans in accordance with Section 3.1(a) above shall be applied as follows:

         (a) First, the first $180.0 million of such proceeds shall be applied
to prepay Term Loans in accordance with Section 2.09(c)(ii) of the Credit
Agreement; and

         (b) Second, any such proceeds in excess of $180.0 million shall be
applied to prepay Term Loans in accordance with Section 2.10(b)(i)(B) of the
Credit Agreement.

Section 3.3. Fee to Approving Lenders. As an inducement to the Lenders and the
Administrative Agent to enter into this Amendment, upon the effectiveness of
this Amendment, Borrower agrees to pay to the Administrative Agent, for the
benefit of each Lender that executes this Amendment on or prior to 1:00 p.m.
(Eastern time) on June 19, 2003 (each such Lender an "Amendment No. 4 Approving
Lender"), a fee (an "Approving Lenders Fee") in an amount equal to 0.50% (1/2
of one percent) of the sum of (i) the aggregate outstanding principal amount of
such Amendment No. 4 Approving Lender's Term Loans and (ii) such Amendment No. 4
Approving Lender's Revolving Credit Commitment (in each case prior to giving
effect to this Amendment) and the application of Senior Notes proceeds pursuant
to Section 3.2 hereof.

Section 3.4. Perfection Certificate. The Borrower hereby agrees that it shall
execute and deliver to the Administrative Agent as soon as practicable, but in
no event later than July 20, 2003, a duly completed perfection certificate
(together with all attachments thereto) in form and substance reasonably
satisfactory to the Administrative Agent.

                                   ARTICLE IV

                         REPRESENTATIONS AND WARRANTIES

         Section 4.1. Representations and Warranties. Each of the Obligors
represents and warrants (which representations and warranties shall survive the
execution and delivery hereof) to the Creditors that:

         (a) No Default or Event of Default shall have occurred and be
continuing;

         (b) the representations and warranties of the Obligors contained in the
Credit Agreement and in the other Credit Documents are true and complete in all
material respects on and as of the Effective Date (as defined in Section 5.1
below) with the same force and effect as if made on and as of the Effective Date
(except to the extent that such representations and warranties expressly relate
to an earlier date, in which case such representations and warranties shall be
true and correct in all material respects as of such earlier date;

                                       11
<PAGE>

         (c) since February 28, 2003, there has not occurred any Material
Adverse Effect;

         (d) there are no existing claims by it against any of the Creditors and
there are no offsets or defenses by it to the payment of any amounts required
under the Credit Documents or otherwise to the enforcement by the Creditors of
the Credit Documents; and

         (e) all of the obligations in connection with the issuance of the
Senior Notes have been met; all Companies party to the Senior Notes Documents
have the power and authority to execute, deliver and carry out the terms and
provisions of the Senior Notes Documents and the transactions contemplated
thereby and have taken or caused to be taken all necessary corporate or other
action to authorize the execution, delivery and performance of the Senior Notes
Documents and the transactions contemplated thereby; and the issuance of the
Senior Notes would not cause a Default or Event of Default under the Credit
Documents, the Parent Financing Documents, the Senior Subordinated Notes
Financing Documents or any other agreements to which the Obligors may be a
party.

                                    ARTICLE V

                                  EFFECTIVENESS

Section 5.1. Effective Date. This Amendment shall become effective on the date
on which all of the following conditions precedent shall have been satisfied, or
waived in writing (such date being referred to herein as the "Effective Date"):

         (a) The Administrative Agent shall have received fully executed
counterparts of this Amendment executed by (i) the Obligors, (ii) the
Administrative Agent and (iii) the Majority Lenders;

         (b) The Administrative Agent shall have received the favorable written
opinions (addressed to the Administrative Agent and the Lenders and dated as of
the Effective Date) of (i) Gibson, Dunn & Crutcher LLP, counsel for Borrower and
the PR Borrower, and (ii) the Borrower's general counsel, each in form and
substance satisfactory to the Administrative Agent and to Clifford Chance US
LLP, counsel to the Administrative Agent, and covering such matters related to,
among other things, the transactions contemplated by this Amendment and the
Senior Notes Documents as the Administrative Agent may reasonably require;

         (c) Borrower and its Subsidiaries shall have received gross proceeds
from the issuance of the Senior Notes of not less than $500 million;

         (d) The Administrative Agent shall have received fully executed copies
of each of the Senior Notes Documents in form and substance satisfactory to the
Administrative Agent;

         (e) All representations and warranties contained in this Amendment or
otherwise made in writing to the Administrative Agent and the Lenders in
connection herewith shall be true and correct in all material respects;

         (f) The Administrative Agent and the Lenders shall have received
payment of all fees (including, without limitation, the Approving Lenders Fee)
and other amounts due and payable on or prior to the Effective Date, including
to the extent invoiced, reimbursement or payment of all out-of-pocket expenses
(including, without limitation, the reasonable fees and disbursements of
Clifford Chance US LLP and FTI Consulting, Inc., financial advisor to Clifford
Chance US LLP ("FTI")), required to be reimbursed or paid by any Obligor
hereunder or under any other Credit Document;

                                       12
<PAGE>

         (g) The Administrative Agent shall have received fully executed
originals of the Amended and Restated Security Agreement attached hereto as
Exhibit A;

         (h) The Borrower shall have delivered to the Administrative Agent an
Officers' Certificate or other evidence satisfactory to the Administrative Agent
confirming the dissolution of Centennial US Wireless, LLC;

         (i) The Administrative Agent and its counsel shall have received such
approvals, information, materials and documentation as the Administrative Agent
or its counsel may reasonably request, which approvals, information, materials
and documentation shall be satisfactory in form and substance to the
Administrative Agent and its counsel; and

         (j) All legal matters incident to this Amendment and the effects hereof
or any of the Credit Documents shall be acceptable to the Administrative Agent
and its counsel.

                                   ARTICLE VI

                                ACKNOWLEDGEMENTS

Section 6.1. Confirmation and Acknowledgement of the Obligations; Release. Each
of Borrower, Parent and PR Borrower hereby (i) confirms and acknowledges to the
Administrative Agent and the Lenders that it is validly and justly indebted to
the Administrative Agent and the Lenders for the payment of all obligations
without offset, defense, cause of action, demand or counterclaim of any kind or
nature whatsoever under the Credit Documents pursuant to the terms thereof and
(ii) reaffirms and admits the validity and enforceability of the Credit
Agreement and the Credit Documents and the Liens on the Collateral which were
granted pursuant to any of the Credit Documents or otherwise. Each of the
Obligors, on its own behalf and on behalf of its successors and assigns, hereby
waives, releases and discharges the Administrative Agent and each Lender and all
of the affiliates of the Administrative Agent and each Lender, and all of the
directors, officers, employees, attorneys, agents, successors and assigns of the
Administrative Agent, each Lender and such affiliates, from any and all claims,
demands, actions or causes of action (known and unknown) arising out of or in
any way relating to any of the Credit Documents and any documents, agreements,
dealings or other matters connected with any of the Credit Documents, in each
case to the extent arising on or prior to the date hereof or out of, or relating
to, actions, dealings or matters occurring on or prior to the date hereof.

Section 6.2. Acknowledgement and Consent by Guarantors.

         (a) Each of the Guarantors hereby acknowledges that it has read this
Amendment and consents to the terms hereof and further confirms and agrees that,
notwithstanding the effectiveness of this Amendment, its obligations pursuant to
the Credit Documents shall not be impaired and its guarantee pursuant to the
Credit Agreement is, and shall continue to be, in full force and effect and is
hereby confirmed and ratified in all respects.

         (b) Each of the Guarantors hereby confirms and acknowledges that it is
validly and justly indebted to the Administrative Agent and the Lenders for the
payment of all of its obligations which it has guaranteed, without offset,
defense, cause of action or counterclaim of any kind of nature whatsoever under
the Credit Documents pursuant to the terms thereof.

                                       13
<PAGE>

         (c) Each of the Guarantors hereby reaffirms and admits the validity and
enforceability of the Credit Agreement and the Credit Documents to which it is a
party and the Liens on the Collateral which were granted by it pursuant to any
of the Credit Documents or otherwise.

                                   ARTICLE VII

                                  MISCELLANEOUS

Section 7.1. Costs and Expenses. The Obligors acknowledge and agree that their
obligations set forth in Section 12.03(a)(i) of the Credit Agreement include
reasonable out-of-pocket costs and expenses of the Amendment Arrangers in
connection with the preparation, execution and delivery of this Amendment and
any other documentation contemplated hereby (whether or not this Amendment
becomes effective or the transactions contemplated hereby are consummated),
including, but not limited to, the reasonable fees and disbursements of Clifford
Chance US LLP, counsel to the Administrative Agent, and FTI.

Section 7.2. Cooperation of Financial Advisor. The Obligors shall, and shall
instruct their financial advisor to, cooperate with FTI in connection with FTI's
engagement, including, without limitation, FTI's review and evaluation of the
operations and financial performance of Borrower and the other Obligors.

Section 7.3. Consultation with Advisors. Each of the Obligors acknowledges that
it has consulted with counsel and with such other experts and advisors as it has
deemed necessary in connection with the negotiation, execution and delivery of
this Amendment.

Section 7.4. Limited Waiver or Modification; Ratification of Credit Agreement.

         (a) Except to the extent hereby expressly waived or modified, the
Credit Agreement and each of the Credit Documents remain in full force and
effect and are hereby ratified and confirmed.

         (b) This Amendment shall be limited precisely as written and shall not
be deemed: (i) to be a consent granted pursuant to, or a waiver or modification
of, any other term or condition of the Credit Agreement or any of the
instruments or agreements referred to therein or a waiver of any Default or
Event of Default under the Credit Agreement, whether or not known to the
Creditors; or (ii) to prejudice any right or rights which the Creditors may now
have or have in the future under or in connection with any Credit Document or
any of the instruments or agreements referred to in a Credit Document. Except to
the extent hereby modified, the Credit Agreement and each of the Credit
Documents shall continue in full force and effect in accordance with the
provisions thereof on the date hereof and the Credit Agreement as heretofore
amended or modified and as modified by this Amendment are hereby ratified and
confirmed.

Section 7.5. References. All references to the "Credit Agreement," "this
Agreement," "herein," "hereafter," "hereto," "hereof," and words of similar
import appearing in the Credit Agreement, shall, unless the context otherwise
requires, mean the Credit Agreement as modified by this Amendment. Reference to
the terms "Agreement" or "Credit Agreement" appearing in the Exhibits or
Schedules to the Credit Agreement or in the other Credit Documents shall, unless
the context otherwise requires, mean the Credit Agreement as modified by this
Amendment. This Amendment shall be deemed to have been jointly drafted, and no
provision of it shall be interpreted or construed for or against any party
hereto because such party purportedly prepared or requested such provision, any
other provision, or this Amendment as a whole.

Section 7.6. Counterparts. This Amendment may be executed in any number of
counterparts and by the different parties hereto in separate counterparts, each
of which when so executed and delivered shall

                                       14
<PAGE>

be deemed to be an original and all of which taken together shall constitute but
one and the same instrument. Delivery of an executed signature page to this
Amendment by facsimile shall be as effective as delivery of a manually executed
counterpart of this Amendment.

Section 7.7. Credit Document. This Amendment is a Credit Document pursuant to
the Credit Agreement and shall (unless expressly indicated herein or therein) be
construed, administered, and applied, in accordance with all of the terms and
provisions of the Credit Agreement.

Section 7.8. Severability. Any provision of this Amendment which is invalid,
illegal or unenforceable under the applicable law of any jurisdiction, shall, as
to such jurisdiction, be ineffective to the extent of such invalidity,
illegality or unenforceability without invalidating the remaining provisions
hereof, and any such invalidity, illegality or unenforceability in any
jurisdiction shall not invalidate such provision in any other jurisdiction.

Section 7.9. GOVERNING LAW. THIS AMENDMENT AND THE RIGHTS AND OBLIGATIONS OF THE
PARTIES HEREUNDER SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE
LAWS OF THE STATE OF NEW YORK WITHOUT REGARD TO THE CONFLICTS OF LAWS PRINCIPLES
THEREOF.

Section 7.10. Further Assurance. The parties hereto shall, at any time and from
time to time following the execution of this Amendment, execute and deliver all
such further instruments and take all such further action as may be reasonably
necessary or appropriate in order to carry out the provisions of this Amendment.

Section 7.11. Successors and Assigns. The provisions of this Amendment shall be
binding upon, and inure to the benefit of, the parties hereto and their
respective successors and assigns.

Section 7.12. Headings. The headings of this Amendment are for the purposes of
reference only and shall not affect the construction of, or be taken into
consideration in interpreting, this Amendment.

Section 7.13. Relationship. The Obligors agree that the relationship between the
Administrative Agent and the Lenders, on the one hand, and the Obligors, on the
other hand, is that of creditor and debtor and not that of partners or joint
venturers. This Amendment does not constitute a partnership agreement or any
other association between the Administrative Agent, the Lenders and the
Obligors. The Obligors acknowledge that the Administrative Agent and the Lenders
have acted at all times only as creditors to the Obligors within the normal and
usual scope of the activities normally undertaken by a creditor and in no event
have the Administrative Agent or any of the Lenders attempted to exercise any
control over the Obligors or their respective businesses or affairs.

Section 7.14. No Third Party Beneficiaries. This Amendment is made and entered
into for the sole protection and benefit of the Obligors, the Administrative
Agent and the Lenders and no other person or entity shall have any right of
action herein, right to claim any right or benefit from the terms contained
herein, or be deemed a third party beneficiary hereunder.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                       15
<PAGE>
         IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
duly executed as of the day and the year first above written.

                          BORROWER:

                          CENTENNIAL CELLULAR OPERATING CO. LLC

                          By:           /s/ TONY L. WOLK
                             ---------------------------------------------------
                             Name:      Tony L. Wolk
                             Title:     Senior Vice President, General Counsel

                          PR BORROWER:

                          CENTENNIAL PUERTO RICO OPERATIONS CORP.

                          By:           /s/ TONY L. WOLK
                             ---------------------------------------------------
                             Name:      Tony L. Wolk
                             Title:     Senior Vice President, General Counsel

                          PARENT AND GUARANTOR:

                          CENTENNIAL COMMUNICATIONS CORP. (formerly known as
                          Centennial Cellular Corp.)

                          By:           /s/ TONY L. WOLK
                             ---------------------------------------------------
                             Name:      Tony L. Wolk
                             Title:     Senior Vice President, General Counsel

                          AGENTS AND LENDERS:

                          BANK OF AMERICA, N.A., individually and as
                          Administrative Agent and as Amendment Arranger

                          By:              /s/ JOHN W. WOODIEL
                             ---------------------------------------------------
                             Name:          John W. Woodiel III
                             Title:         Managing Director

<PAGE>

                        JP MORGAN CHASE BANK (formerly known as The Chase
                        Manhattan Bank), individually and as Co-Syndication
                        Agent and as Amendment Arranger

                        By:              /s/ DAVID E. OLIVER
                           -----------------------------------------------------
                           Name:          David E. Oliver
                           Title:         Vice President

                        MERRILL LYNCH & CO., and MERRILL LYNCH, PIERCE,
                        FENNER & SMITH INCORPORATED, individually and as
                        Co-Syndication Agent

                          By:          /s/ KEVIN LYDON
                             -----------------------------------------------
                          Name:          Kevin Lydon
                          Title:         Managing Director

                        THE BANK OF NOVA SCOTIA, individually and as
                        Documentation Agent

                           By:          /s/ STEPHEN C. LEVI
                              ------------------------------------------------
                           Name:          Stephen C. Levi
                           Title:         Director

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