Document:

<PAGE>
                                                                   Exhibit 10.20

               AMENDMENT TO SHARE SALE AND PURCHASE AGREEMENT AND
                             SHAREHOLDERS AGREEMENT

This Amendment to Share Sale and Purchase Agreement and Shareholders Agreement
(this "Amendment") is made and entered into as of the 27th day of September
2002, by and among:

AMKOR TECHNOLOGY, INC., a Delaware corporation with a place of business at 1345
Enterprise Drive, West Chester, Pennsylvania 19380, U.S.A ("ATI");

DONGBU CORPORATION, a Korean corporation with its registered office located at
Dongbu Financial Center, 891-10 Daechi-dong, Kangnam-ku, Seoul, Korea ("Dongbu
Corporation");

DONGBU FIRE INSURANCE CO., LTD., a Korean corporation with its registered office
located at Dongbu Financial Center, 891-10 Daechi-dong, Kangnam-ku, Seoul, Korea
("Dongbu Fire"); and

DONGBU LIFE INSURANCE CO., LTD., a Korean corporation with its registered office
located at Dongbu Financial Center, 891-10 Daechi-dong, Kangnam-ku, Seoul, Korea
("Dongbu Life").

Dongbu Corporation, Dongbu Fire and Dongbu Life shall hereinafter be
collectively referred to as "Dongbu". ATI and Dongbu shall hereinafter be
referred to individually as a "Party" and collectively as the "Parties".

                                    RECITALS:

A.    Anam Semiconductor, Inc., a Korean corporation with its registered office
      located at 154-17, Samsung-dong, Kangnam-ku, Seoul, Korea (the "Company")
      issued, and Dongbu Fire and Dongbu Life subscribed for, an aggregate of
      12,000,000 common shares of the Company, on July 26, 2002.

B.    ATI and Dongbu Corporation entered into a certain share sale and purchase
      agreement dated July 10, 2002 (the "Share Sale and Purchase Agreement")
      pursuant to which ATI agreed to sell, and Dongbu Corporation agreed to
      purchase, an aggregate of 20,000,000 common shares of the Company.

C.    ATI and Dongbu entered into a certain shareholders agreement dated July
      29, 2002 (the "Shareholders Agreement") in which the parties thereto
      memorialized their agreements with respect to their joint ownership and
      management of the Company after the closing of the share sale and purchase
      transaction under the Share Sale and Purchase Agreement.

D.    The parties to this Amendment desire to amend the Share Sale and Purchase

                                       1
<PAGE>
      Agreement and the Shareholders Agreement on the terms and conditions set
      forth herein.

Now, it is hereby agreed as follows:

ARTICLE 1.  DEFINITIONS & INTERPRETATION

1.1   The terms used herein shall have the same meanings as in the Share Sale
      and Purchase Agreement and the Shareholders Agreement unless otherwise
      defined herein.

1.2   Except where the context otherwise requires, each gender shall include the
      other genders and the singular shall include the plural and vice versa,
      and references to persons shall include bodies corporate and incorporate.

1.3   Headings of Articles in this Amendment are for convenience only and do not
      substantively affect the terms of this Amendment.

ARTICLE 2.  AMENDMENTS TO THE SHARE SALE AND PURCHASE AGREEMENT

ATI and Dongbu Corporation hereby agree to amend the Share Sale and Purchase
Agreement as follows:

2.1   Article 2.3 shall be amended and restated in its entirety as follows:

      "Payment Method. Purchaser shall pay to Seller the Purchase Price by means
      of cash payments and delivery of the Promissory Notes in the amounts and
      in the manner set forth in Articles 3,1, 3.2 and 3.5."

2.2   Article 3.3 shall be amended by replacing "August 28, 2002" in the third
      line thereof with "September 30, 2002".

2.3   Article 3.5 shall be amended and restated in its entirety as follows:

      "Closing Deliveries of Purchaser. At the Closing, Purchaser shall pay, or
      have paid, to Seller the remaining unpaid portion of the Purchase Price,
      (i) by payment in cash in immediately available funds to the bank account
      designated in writing by Seller in advance, KRW15,000,000,000 (against
      which payment Seller shall deliver, or have delivered, to Purchaser a
      receipt, duly executed by Seller, certifying the receipt by Seller of such
      payment) and (ii) by delivery, or having delivered, to Seller or its
      designated affiliate (subject to Korean foreign exchange regulations) the
      following:

      (a)   a promissory note in the amount of KRW21,000,000,000, bearing
            interest at a rate of 5% per annum, payable 12 months after the
            Closing Date; and

      (b)   a promissory note in the amount of KRW21,000,000,000, bearing
            interest at a rate of 5% per annum, payable on February 10, 2004.

      Each promissory note referred to in (a) and (b) of this Article 3.5 is
      referred to as a "Promissory Note" and together are referred to as the
      "Promissory Notes". The

                                       2
<PAGE>
      Promissory Notes shall be issued by Purchaser and payable at bank
      (eun-haeng-do-yak-sok-eo-eum). The Promissory Notes shall be secured by
      Purchaser's pledge to Seller of 10,000,000 of the Sale Shares (the
      "Pledge"). Seller (as pledgee) shall hold the share certificates in
      respect of the pledged Shares through a third party assistant-possessor
      for Seller (jeom-yu-bo-jo-ja) mutually agreeable to Seller and Purchaser.
      The Promissory Notes shall be in the form of Exhibit 1 attached hereto,
      and the Pledge shall be in the form of Exhibit 2 attached hereto.

2.4   Article 3.6 shall be deleted.

2.5   Articles 5.1 (b) through (g) shall be amended so that each representation
      and warranty therein by Seller with respect to the Share Sale and Purchase
      Agreement shall apply mutatis mutandis to the Promissory Notes and the
      Pledge.

2.6   Article 7.2.3 shall be deleted.

2.7   Article 7.2.4 shall be renumbered as Article 7.2.3 and shall be amended
      and restated in its entirety as follows:

      "Shareholders Agreement. The Shareholders Agreement has not been
      terminated."

2.8   Article 8.3 shall be amended and restated in its entirety as follows:

      "Shareholders Agreement. The Shareholders Agreement has not been
      terminated."

2.9   Article 10.1(e) shall be amended by replacing "September 13, 2002" in the
      first line thereof with "October , 2002".

2.10  Exhibits 1 and 2 attached hereto shall be added as exhibits to the Share
      Sale and Purchase Agreement.

ARTICLE 3.  AMENDMENTS TO THE SHAREHOLDERS AGREEMENT

ATI and Dongbu hereby agree to amend the Shareholders Agreement as follows:

3.1   Article 2.2 shall be amended by replacing "within 7 days after the payment
      of the Interim Payment (as defined in the Share Sale and Purchase
      Agreement)" in the first and second lines thereof with "no later than
      October 7, 2002".

3.2   Article 3.4(a) shall be amended by adding at the end thereof "; provided
      that the integration of the Company with Dongbu Electronics shall be
      excluded".

3.3   Article 3.4(b) shall be amended by adding at the end thereof "; provided
      that share issuance in connection with the merger between the Company and
      Dongbu Electronics or contribution in kind of Dongbu Electronics shares as
      an interim step toward such merger shall be excluded.

3.4   Article 3.4(c) shall be amended and restated as follows:

                                       3
<PAGE>
      "(A) prior to the date on which the Foundry Agreement (as defined in
      Article 4.3) has been terminated and the fair value of the Foundry
      Agreement has been fully paid by the Company in accordance with Article
      4.3, any transaction whose contract value together with that of all other
      transactions in a fiscal year exceeds KRW50,000,000,000 or any transaction
      between the Company and its directors, officers, employees, major
      shareholders or affiliates or directors, officers, employees of its major
      shareholders or affiliates; provided that (i) employment contracts in the
      ordinary course of business, (ii) such transactions which are on an arm's
      length basis and normal commercial terms and (iii) any transaction to be
      made in accordance with Sections 4.3, 4.4 and 4.5 hereof, shall be
      excluded; (B) after the Foundry Agreement has been terminated and the fair
      value of the Foundry Agreement has been fully paid by the Company in
      accordance with Section 4.3, any transaction, whose contract value
      together with that of all other such transactions in a fiscal year exceeds
      KRW50,000,000,000, between the Company and its directors, officers,
      employees, major shareholders or affiliates or directors, officers,
      employees of its major shareholders or affiliates; provided that (i)
      employment contracts in the ordinary course of business, (ii) such
      transactions which are on an arm's length basis and normal commercial
      terms, (iii) any transaction to be made in accordance with Sections 4.3,
      4.4 and 4.5 hereof and (iv) any transaction between the Company and Dongbu
      Electronics, shall be excluded; and (C) after the payment in full of the
      Promissory Notes (as defined in the Share Sale and Purchase Agreement),
      this clause (c) of Article 3.4 shall be deleted."

3.5   Article 4.1 shall be amended by replacing the phrase "under terms mutually
      satisfactory" in the second line thereof with "in accordance with a merger
      ratio (the ratio of Company shares to Dongbu Electronics shares upon which
      the merger will be consummated) mutually satisfactory" and by adding at
      the end of such Article 4.1 the following:

      "Pending such merger, ATI and Dongbu shall cooperate and consult with each
      other in good faith as to the management of the Company and Dongbu
      Electronics with the goal of aligning the activities and policies of the
      Company and Dongbu Electronics toward the mutual benefit of both
      companies; provided, however, that Dongbu shall have no obligations of any
      kind toward ATI with respect to the management of Dongbu Electronics other
      than such consultation and except as set forth in Article 3.7. In the
      event the Shareholders cannot agree on mutually satisfactory merger ratio
      for such merger, the Shareholders shall appoint an independent financial
      adviser in Korea mutually agreeable to the Shareholders, and such
      financial advisor shall determine the fair merger ratio. The Shareholders
      agree that the fair merger ratio as determined by the independent
      financial advisor as aforesaid shall be the basis upon which the Company
      and Dongbu Electronics will be merged; provided that such merger complies
      with all applicable laws. ATI and Dongbu acknowledge that capital
      contribution in kind of Dongbu Electronics shares into the Company may
      occur as an interim step toward the above merger, in which case such
      capital contribution shall be made based on a valuation of Dongbu
      Electronics share mutually agreeable to the Shareholders. In the event the
      Shareholders cannot mutually agree on such valuation, the procedure set
      forth above for the determination of the merger ratio by an independent
      financial advisor shall apply mutatis mutandis."

                                       4
<PAGE>
3.6   Article 4.2 shall be amended by replacing the phrase "the election of
      directors pursuant to Article 3.1" in the first line thereof with "the
      Share Purchase Closing".

3.7   Article 4.3 shall be amended and restated in its entirety as follows:

      "ATI and Dongbu acknowledge that the Foundry Agreement dated January 1,
      1998 (the "Foundry Agreement") by and among ATI, Amkor Electronics, Inc.
      and C.I.L. Limited (Cayman) (the "Amkor Parties") and Anam USA and the
      Company will be terminated as soon as practicable and prior to the end of
      2002 and that the process for agreeing to the terms and conditions of such
      termination shall be as follows: (i) ATI will appoint a third party
      appraiser to determine the fair value to the Amkor Parties of such Foundry
      Agreement; (ii) if based on the determination of such appraiser the Amkor
      Parties and the Company cannot agree on the terms and conditions of the
      termination of the Foundry Agreement, which are mutually agreeable to the
      Shareholders, the Company will, with the consent of Dongbu, which consent
      shall not be unreasonably withheld, appoint a third party appraiser to
      determine such fair value; and (iii) if based on the determinations of the
      appraisers appointed by ATI and the Company, the Amkor Parties and the
      Company cannot agree on the terms and conditions of the termination of the
      Foundry Agreement, which are mutually agreeable to the Shareholders, the
      terms and conditions of the termination of the Foundry Agreement shall be
      determined pursuant to arbitration as provided in the Foundry Agreement.
      Each of the Shareholders shall vote its Shares and/or instruct directors
      nominated by it, as applicable, to cause the Company to terminate the
      Foundry Agreement in accordance with this Section 4.3; provided the amount
      paid by the Company to the Amkor Parties in consideration for their
      agreement to terminate the Foundry Agreement shall not exceed
      US$65,000,000 and shall not be lower than US$45,000,000."

3.8   Section 7.11 shall be amended by adding at the end thereof  the following:

      "In addition, ATI may upon written notice to that effect to Dongbu
      terminate this Agreement if an event of default under the Promissory Notes
      or the Pledge (as such terms are defined in the Share Sale and Purchase
      Agreement) and such default has not been cured within all applicable grace
      or cure periods. In the event of termination of this Agreement due to such
      an event of default under the Promissory Notes or the Pledge, Dongbu shall
      immediately cause their designated directors and officers of the Company
      to resign and shall not thereafter participate in the management of the
      Company."

ARTICLE 4.  EFFECTIVENESS OF THE SHARE SALE AND PURCHASE AGREEMENT AND THE
            SHAREHOLDERS AGREEMENT

Except as hereby amended, the Share Sale and Purchase Agreement and the
Shareholders Agreement shall remain in full force and effect.

                                       5
<PAGE>
ARTICLE 5   GOVERNING LAW & ARBITRATION

5.1   This Amendment shall be governed by and construed in accordance with the
      laws of Korea.

5.2   Section 7.2 of the Shareholders Agreement shall hereby be incorporated by
      reference into this Amendment.

                           [signature page to follow]

                                       6
<PAGE>
IN WITNESS WHEREOF, the Parties executed this Amendment as of the date first
above written.

AMKOR TECHNOLOGY, INC.

By       /s/ JOHN N. BORUCH
      ________________________
      Name:  JOHN N. BORUCH
      Title: PRESIDENT AND COO

DONGBU CORPORATION

By       /s/ HO-IK PAIK
      ________________________
      Name:  HO-IK PAIK
      Title: PRESIDENT AND CEO

DONGBU FIRE INSURANCE CO., LTD.

By       /s/ SU KWANG LEE
      ________________________
      Name:  SU KWANG LEE
      Title: PRESIDENT AND CEO

DONGBU LIFE INSURANCE CO., LTD.

By       /s/ KI CHI CHANG
      ________________________
      Name:  KI CHI CHANG
      Title: PRESIDENT AND CEO

                                       7<PAGE>

                                                                     EXHIBIT 4.1

                          AMENDMENT TO CREDIT AGREEMENT

         This AMENDMENT TO CREDIT AGREEMENT (this "Amendment"), is dated as of
September 12, 2002 by and among D & E COMMUNICATIONS, INC., a Pennsylvania
corporation (the "Borrower"), the Subsidiaries of the Borrower listed on the
signature pages hereto (the "Subsidiary Guarantors" and collectively with the
Borrower, the "Loan Parties"), COBANK, ACB, as administrative agent for the
Lenders (as defined in the hereinafter defined Existing Credit Agreement) and a
Lender (in such capacity, the "Administrative Agent") and each of the Lenders
executing a signature page hereto.

                                    RECITALS

         WHEREAS, the Loan Parties, the Administrative Agent and the Lenders are
parties to that certain Credit Agreement entered into as of May 24, 2002 (as
heretofore amended, the "Existing Credit Agreement"; and as amended by this
Amendment, the "Amended Credit Agreement"; capitalized terms used herein and not
otherwise defined herein shall have the meanings ascribed to them in the
Existing Credit Agreement);

         WHEREAS, the Loan Parties, the Administrative Agent and the Lenders
desire to enter into this Amendment to amend certain provisions of the Existing
Credit Agreement; and

         NOW, THEREFORE, in consideration of the premises and the agreements,
covenants and provisions herein contained and other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the
parties hereto agree as follows:

SECTION 1.  AMENDMENTS TO EXISTING CREDIT AGREEMENT

         Subject to the satisfaction of the conditions precedent set forth in
Section 3 of this Amendment, the Loan Parties, the Administrative Agent and the
Lenders hereby agree that the Existing Credit Agreement be, and it hereby is,
amended as follows:

         1.1      General. Upon and after the date hereof, all references to the
Existing Credit Agreement in that document or in any other Loan Document shall
mean the Amended Credit Agreement. Except as expressly provided herein, the
execution and delivery of this Amendment do not and will not amend, modify or
supplement any provision of, or constitute a consent to or a waiver of any
noncompliance with the provisions of, the Existing Credit Agreement, and, except
as specifically provided in this Amendment, the Existing Credit Agreement shall
remain in full force and effect and is hereby ratified and confirmed.

         1.2      Amendments to Sections 1.2(B) and (G). Each of Sections 1.2(B)
and (G) of the Existing Credit Agreement is hereby amended by amending and
restating such subsection in its entirety as follows:

                  (B) Applicable Margins. From September 12, 2002 and continuing
         through the day immediately preceding the first Adjustment Date
         occurring after November 24, 2002, the applicable Base Rate Margin and
         LIBOR Margin shall be 3.00% and 4.00% per

<PAGE>

Amendment to Credit Agreement/ D&E

         annum, respectively for the Revolving Loans and Term Loan B, and 3.125%
         and 4.125% per annum, respectively for the Term Loan A. Commencing on
         such Adjustment Date, the applicable Base Rate Margin and LIBOR Margin
         for each Loan shall be for each Calculation Period the applicable per
         annum percentage set forth in the pricing table below opposite the
         Total Leverage Ratio of Borrower; provided, that effective upon the
         occurrence of an Event of Default and until such Event of Default is
         cured or waived the applicable Base Rate Margin and LIBOR Margin shall
         be 3.00% and 4.00% per annum, respectively, for the Revolving Loans and
         Term Loan B, and 3.125% and 4.125% per annum, respectively, for the
         Term Loan A.

                                  PRICING TABLE

<TABLE>
<CAPTION>
------------------------------------------------------------------------------------------------------------------
                                               Revolving Loans and
                                                   Term Loan B                               Term Loan A
------------------------------------------------------------------------------------------------------------------

                                            Base Rate            LIBOR               Base Rate             LIBOR
       Total Leverage Ratio                  Margin              Margin                Margin              Margin
------------------------------------------------------------------------------------------------------------------
<S>                                         <C>                  <C>                 <C>                   <C>
        > Than = To 4.5                      3.00%                4.00%                3.125%              4.125%

------------------------------------------------------------------------------------------------------------------
    > Than = To 4.0 and < 4.5                2.75%                3.75%                2.875%              3.875%

------------------------------------------------------------------------------------------------------------------
    > Than = To 3.0 and < 4.0                2.50%                3.50%                2.625%              3.625%

------------------------------------------------------------------------------------------------------------------
    > Than = To 2.0 and < 3.0                2.00%                3.00%                2.250%              3.125%

------------------------------------------------------------------------------------------------------------------
            < 2.0                            1.75%                2.50%                2.000%              2.625%

------------------------------------------------------------------------------------------------------------------
</TABLE>

                  (G) Selection, Conversion or Continuation of Loans; LIBOR and
         Long-Term Fixed Rate Availability. Provided that no Default or Event of
         Default has occurred and is then continuing, Borrower shall have the
         option to (i) select all or any part of a new borrowing to be a LIBOR
         Loan or, if the Term Loan A, a Long-Term Fixed Rate Loan, in a
         principal amount equal to $2,000,000 or any whole multiple of $500,000
         in excess thereof, or a Base Rate Loan in a principal amount equal to
         $1,000,000 or any whole multiple of $250,000 in excess thereof, (ii)
         convert at any time all or any portion of a Base Rate Loan in a
         principal amount equal to $2,000,000 or any whole multiple of $500,000
         in excess thereof into one or more LIBOR Loans or, if the Term Loan A,
         Long-Term Fixed Rate Loans, (iii) upon the expiration of any Interest
         Period, convert all or any part of any LIBOR or Long-Term Fixed Rate
         Loan into a Base Rate Loan, and (iv) upon the expiration of its
         Interest Period, continue any LIBOR or Long-Term Fixed Rate Loan in a
         principal amount of $2,000,000 or any whole multiple of $500,000 in
         excess thereof into one or more LIBOR or Long-Term Fixed Rate Loans for
         such new Interest Period(s) as selected by Borrower, subject to the
         other provisions herein. Each LIBOR Loan must be made under either the
         Term Loan A Facility, Term Loan B Facility or the Revolving Loan
         Facility, but may not be made under more than one concurrently. Each
         Long-Term

                                       2

<PAGE>

Amendment to Credit Agreement/ D&E

         Fixed Rate Loan may be made only under the Term Loan A. During any
         period in which any Default or Event of Default is continuing, as the
         Interest Periods for LIBOR or Long-Term Fixed Rate Loans then in effect
         expire, such Loans shall be converted into Base Rate Loans and the
         LIBOR and Long-Term Fixed Rate options will not be available to
         Borrower until all Events of Default are cured or waived.
         Notwithstanding the foregoing, there may be no more than a total of
         eight (8) Loans outstanding under the Facilities at any one time
         (including, as a single Loan, all amounts under a single Facility
         accruing interest at the Base Rate).

         1.3      Amendment to Section 3.12. Section 3 of the Existing Credit
Agreement is amended by adding to the end of such Section the following new
Subsection 3.12:

                  3.12     CLEC Buildout. Borrower will not and will not permit
         any of its Subsidiaries to make any expenditures of any kind,
         including, without limitation, capital expenditures, operating expenses
         or other expenses under GAAP, related to the operation of a competitive
         local exchange carrier (CLEC), except in the Existing CLEC Markets,
         until such time as (i) the Excess Cash Flow from the Existing CLEC
         Markets determined on an aggregate basis is positive for at least (2)
         consecutive quarters; (ii) there exists at the time of any proposed
         CLEC expansion no currently existing Event of Default; (iii) the
         Borrower's Total Leverage Ratio is less than 3.50:l.00 for the two (2)
         consecutive quarters immediately preceding such proposed expansion; and
         (iv) the Borrower has delivered to the Administrative Agent a business
         plan and Projections for such expansion which demonstrate, based on
         reasonable assumptions, that (A) such business plan is fully funded
         with the liquidity resources then available to the Borrower and without
         need of additional financing, other than the Loans; (B) the Borrower
         will be in compliance with all covenants in Subsections 4.1 through 4.5
         for the next succeeding twelve (12) calendar months after giving effect
         to such proposed expansion; and (C) the Borrower's Total Leverage
         Ratio, determined on a consolidated basis, will be less than 3.50:1.00
         for the next succeeding twelve (12) calendar months after giving effect
         to such proposed expansion; provided, however, this covenant shall not
         restrict the Borrower or any of its Subsidiaries from making any
         expenditure in any Existing CLEC Market; provided, further, any Loan
         Party may continue to serve customers located outside of the Existing
         CLEC Markets who were customers of such Loan Party as of September 12,
         2002 and who do not, in the aggregate, account for a material portion
         of the revenues from the CLEC operations of the Loan Parties.

         1.4      Revised Exhibit 4.6(C). Exhibit 4.6(C) to the Existing Credit
Agreement is amended by amending and restating such exhibit as set forth on
Exhibit A hereto.

         1.5      Amendment to Section 5.13(B). Subsection 5.13(B) of the
Existing Credit Agreement is hereby amended by amending and restating such
Subsection in its entirety as follows:

                  (B) The Licenses are valid and in full force and effect
         without conditions except for such conditions as are generally
         applicable to holders of such Licenses. Except as set forth on Schedule
         5.13(B), no event has occurred and is continuing which

                                       3

<PAGE>

Amendment to Credit Agreement/ D&E

         could reasonably be expected to (i) result in the imposition of a
         forfeiture or the revocation, termination or adverse modification of
         any such License or (ii) materially and adversely affect any rights of
         any Loan Party or its Subsidiaries or any other holder thereunder.
         Except as set forth on Schedule 5.13(B), each Loan Party has no reason
         to believe and has no knowledge that any License will not be renewed in
         the ordinary course. Neither any Loan Party nor any of its Subsidiaries
         is a party to any investigation, notice of violation, order or
         complaint issued by or before the FCC, and there are no proceedings
         pending by or before the FCC which could in any manner threaten or
         adversely affect the validity of any License.

         1.6      Amendment to Section 9.2. Subsection 9.2 of the Existing
Credit Agreement is hereby amended by amending and restating such Subsection in
its entirety as follows:

                  9.2      Amendments and Waivers. Except as otherwise provided
         herein, no amendment, modification, termination or waiver of any
         provision of this Agreement, the Notes or any of the other Loan
         Documents, or consent to any departure by Loan Parties therefrom, shall
         in any event be effective unless the same shall be in writing and
         signed by Borrower and Requisite Lenders (or Administrative Agent, if
         expressly set forth herein, in any Note or in any other Loan Document);
         provided, that except to the extent permitted by any applicable Lender
         Addition Agreement, no amendment, modification, termination or waiver
         shall, unless in writing and signed by all Lenders, do any of the
         following: (i) increase any Lender's Pro Rata Share of any Loan
         Commitment; (ii) reduce the principal of, rate of interest on or fees
         payable with respect to any Loan; (iii) extend the Revolving Loan
         Expiration Date, the Term Loan A Maturity Date or Term Loan B Maturity
         Date or extend the date on which any Obligation is to be paid; (iv)
         change the aggregate unpaid principal amount of the Loans; (v) change
         the percentage of Lenders which shall be required for Lenders or any of
         them to take any action hereunder; (vi) release Collateral (except if
         the release of such Collateral is permitted under and effected in
         accordance with, including any consents and approvals required therein,
         Subsection 8.2(I) or any other Loan Document) or any guaranty of the
         Obligations (except to the extent expressly contemplated thereby);
         (vii) amend or waive this Subsection 9.2 or the definitions of the
         terms used in this Subsection 9.2 insofar as the definitions affect the
         substance of this Subsection 9.2; and (viii) consent to the assignment,
         delegation or other transfer by any Loan Party or its Subsidiaries of
         any of its rights and obligations under any Loan Document; provided,
         further, that no amendment, modification, termination or waiver
         affecting the rights or duties of Administrative Agent under any Loan
         Document shall in any event be effective, unless in writing and signed
         by Administrative Agent, in addition to Lenders required hereinabove to
         take such action. Each amendment, modification, termination or waiver
         shall be effective only in the specific instance and for the specific
         purpose for which it was given. No amendment, modification, termination
         or waiver of any provision of any Note shall be effective without the
         written concurrence of the holder of that Note. No notice to or demand
         on Borrower in any case shall entitle Borrower to any other or further
         notice or demand in similar or other circumstances. Any amendment,
         modification, termination, waiver or consent effected in accordance
         with this Subsection 9.2 shall be binding upon each holder of the Notes
         at the time outstanding, each future holder of the Notes, and, if
         signed by Borrower, on Loan Parties.

                                       4

<PAGE>

Amendment to Credit Agreement/ D&E

         1.7      Amendment to Subsection 10.1. Subsection 10.1 of the Existing
Credit Agreement is hereby amended by amending and restating the following
definitions in their entirety as follows:

                  "Excess Cash Flow" means, for any fiscal quarter, (i)
         Operating Cash Flow for such fiscal quarter minus (ii) the sum of (a)
         Fixed Charges, (b) net changes in working capital for such quarter and
         (c) voluntary reductions of the Revolving Loan Commitment under
         Subsection 1.6(C); provided, however, corresponding voluntary
         prepayments of Revolving Loans are made as described in Subsection
         1.7(A).

                  "Existing CLEC Markets" means the following markets in
         Pennsylvania in which the Loan Parties operate a competitive local
         exchange carrier and includes branches or affiliates of CLEC customers
         in such markets located outside of such markets: Lancaster, Harrisburg,
         Reading, Altoona, Pottstown, State College and Williamsport.

                  "Fixed Charges" means the sum of (i) scheduled principal
         payments, (ii) interest expense, (iii) income taxes, (iv) capital
         expenditures and (v) dividends and distributions to shareholders.

                  "Intercreditor Agreement" means the Intercreditor Agreement,
         dated as of September 12, 2002, among Administrative Agent, CoBank and
         the Lenders, as amended, restated or otherwise modified.

                  "Loan Commitment" and "Loan Commitments" mean, individually,
         each of the Revolving Loan Commitment, the Term Loan A Commitment and
         the Term Loan B Commitment, and collectively, the Revolving Loan
         Commitment, Term Loan A Commitment and the Term Loan B Commitment, as
         each such commitment is reduced from time to time as provided in this
         Agreement.

                  "Long-Term Fixed Rate Loan" means a Term Loan A accruing
         interest at a rate determined by reference to the Long-Term Fixed Rate.

SECTION 2.  REPRESENTATIONS AND WARRANTIES

         To induce the Administrative Agent and the Lenders to enter into this
Amendment, each of the Loan Parties hereby represents and warrants to the
Administrative Agent and the Lenders as follows:

         2.1      Authorization of Amendment, Etc. Each Loan Party has the right
and power, and has taken all necessary action, to authorize it to execute,
deliver and perform its obligations under this Amendment in accordance with its
terms. This Amendment has been duly executed and delivered by each Loan Party
and is a legal, valid and binding obligation of such Loan Party, enforceable
against such Loan Party in accordance with its terms.

         2.2      Compliance of Amendment with Laws, Etc. The execution,
delivery and performance of this Amendment in accordance with its terms do not
and will not, by the passage

                                       5

<PAGE>

Amendment to Credit Agreement/ D&E

of time, the giving of notice or otherwise, require any governmental approval or
violate any applicable law relating to any Loan Party;

                  (a)      conflict with, result in a breach of or constitute a
         default under the articles or certificate of incorporation or bylaws of
         any Loan Party, any material provisions of any indenture, agreement or
         other instrument to which such Loan Party is a party or by which such
         Loan Party or any of its properties may be bound or any governmental
         approval relating to such Loan Party, or

                  (b)      result in or require the creation or imposition of
         any Lien upon or with respect to any property now owned or hereafter
         acquired by any Loan Party.

         2.3      Representations in Credit Agreement. After giving effect to
revisions to the Schedules to the Credit Agreement set forth on Schedule A to
the Joinder Agreement of CEI Networks, Inc., dated as of even date herewith, all
of the representations and warranties set forth in the Amended Credit Agreement,
will be accurate in all material respects as of the date hereof, except to the
extent that such representations and warranties expressly relate to an earlier
date, in which case such representations and warranties shall have been true and
correct on and as of such date.

SECTION 3.  EFFECTIVENESS

         This Amendment shall become effective upon the satisfaction in full of
each of the following conditions precedent:

         3.1      Executed Amendment. This Amendment shall have been duly
authorized and executed by the parties hereto, shall be in full force and
effect, no default shall exist hereunder and original counterparts thereof shall
have been delivered to the Administrative Agent.

         3.2      Payment of Fees. The Loan Parties shall reimburse the Lenders
and the Administrative Agent for all costs associated with the negotiation,
execution, enforcement and administration of this Amendment, including, without
limitation, all reasonable attorneys' fees, costs and expenses incurred by the
Lenders and the Administrative Agent.

SECTION 4.  MISCELLANEOUS

         4.1      Counterparts. This Amendment may be executed in two or more
counterparts, each of which shall be deemed an original, and it shall not be
necessary in making proof of this Amendment or its terms to produce or account
for more than one of such counterparts.

         4.2      Construction. This Amendment is a Loan Document executed
pursuant to the Existing Credit Agreement and shall be construed, administered
and applied in accordance with all of the terms and provisions of the Existing
Credit Agreement.

         4.3      Governing Law. This amendment shall be governed by, construed
and enforced in accordance with the laws of the State of Colorado, without
reference to the conflicts or choice of law principles thereof.

                                       6

<PAGE>

Amendment to Credit Agreement/ D&E

         4.4      Successors and Assigns. This amendment shall be binding upon
and inure to the benefit of the parties hereto and their respective successors
and assigns.

                         [Signatures Begin on Next Page]

                                       7

<PAGE>

         Witness the due execution hereof by the respective duly authorized
officers of the undersigned as of the date first written above.

                              D & E COMMUNICATIONS, INC., as Borrower

                              By:    /s/      Thomas E. Morell
                                 ------------------------------------------
                                     Name:    Thomas E. Morell
                                     Title:   Sr. VP, CFO & Treasurer

                              THE DENVER AND EPHRATA TELEPHONE & TELEGRAPH
                              COMPANY, as a Subsidiary Guarantor

                              By:    /s/      Thomas E. Morell
                                 ------------------------------------------
                                     Name:    Thomas E. Morell
                                     Title:   Vice President & Treasurer

                              D&E NETWORKS, INC., as a Subsidiary Guarantor

                              By:    /s/      Thomas E. Morell
                                 ------------------------------------------
                                     Name:    Thomas E. Morell
                                     Title:   VP, Secretary & Treasurer

                              D & E WIRELESS, INC., as a Subsidiary Guarantor

                              By:    /s/      Thomas E. Morell
                                 ------------------------------------------
                                     Name:    Thomas E. Morell
                                     Title:   Vice President & Treasurer

                              D & E SYSTEMS, INC., as a Subsidiary Guarantor

                              By:    /s/      Thomas E. Morell
                                 ------------------------------------------
                                     Name:    Thomas E. Morell
                                     Title:   Vice President & Treasurer

                    [Signatures continued on following page.]

                                       8

<PAGE>

                              D & E INVESTMENTS, INC., as a Subsidiary
                              Guarantor

                              By:    /s/      Thomas E. Morell
                                 ------------------------------------------
                                     Name:    Thomas E. Morell
                                     Title:   Vice President & Treasurer

                              D & E VENTURES, INC., as a Subsidiary Guarantor

                              By:    /s/      Thomas E. Morell
                                 ------------------------------------------
                                     Name:    Thomas E. Morell
                                     Title:   CFO, Secretary & Treasurer

                              D&E MANAGEMENT SERVICES, INC., as a
                              Subsidiary Guarantor

                              By:    /s/      Thomas E. Morell
                                 ------------------------------------------
                                     Name:    Thomas E. Morell
                                     Title:   VP, Secretary & Treasurer

                              PCS LICENSES, INC., as a Subsidiary Guarantor

                              By:    /s/      Thomas E. Morell
                                 ------------------------------------------
                                     Name:    Thomas E. Morell
                                     Title:   VP, Secretary & Treasurer

                              CONESTOGA ENTERPRISES, INC., as a Subsidiary
                              Guarantor

                              By:    /s/      Thomas E. Morell
                                 ------------------------------------------
                                     Name:    Thomas E. Morell
                                     Title:   Secretary & Treasurer

                    [Signatures continued on following page.]

                                       9

<PAGE>

                              THE CONESTOGA TELEPHONE AND
                              TELEGRAPH COMPANY, as a Subsidiary Guarantor

                              By:    /s/      Thomas E. Morell
                                 ------------------------------------------
                                     Name:    Thomas E. Morell
                                     Title:   Vice President & Treasurer

                              BUFFALO VALLEY TELEPHONE COMPANY, as a
                              Subsidiary Guarantor

                              By:    /s/      Thomas E. Morell
                                 ------------------------------------------
                                     Name:    Thomas E. Morell
                                     Title:   Vice President & Treasurer

                              CONESTOGA MOBILE SYSTEMS, INC., as a
                              Subsidiary Guarantor

                              By:    /s/      Thomas E. Morell
                                 ------------------------------------------
                                     Name:    Thomas E. Morell
                                     Title:   Vice President & Treasurer

                              CONESTOGA WIRELESS COMPANY, as a
                              Subsidiary Guarantor

                              By:    /s/      Thomas E. Morell
                                 ------------------------------------------
                                     Name:    Thomas E. Morell
                                     Title:   Vice President & Treasurer

                              CONESTOGA INVESTMENT CORPORATION, as a
                              Subsidiary Guarantor

                              By:    /s/      Thomas E. Morell
                                 ------------------------------------------
                                     Name:    Thomas E. Morell
                                     Title:   Vice President & Treasurer

                    [Signatures continued on following page.]

                                       10

<PAGE>

                              INFOCORE, INC., as a Subsidiary Guarantor

                              By:    /s/      Thomas E. Morell
                                 ------------------------------------------
                                     Name:    Thomas E.Morell
                                     Title:   VP, Secretary & Treasurer

                              TELEBEAMUSA, INC., as a Subsidiary Guarantor

                              By:    /s/      Thomas E. Morell
                                 ------------------------------------------
                                     Name:    Thomas E. Morell
                                     Title:   VP, Secretary & Treasurer

                              CEI NETWORKS, INC., as a Subsidiary Guarantor

                              By:    /s/      Thomas E. Morell
                                 ------------------------------------------
                                     Name:    Thomas E. Morell
                                     Title:   VP, Secretary & Treasurer

                    [Signatures continued on following page.]

                                       11

<PAGE>

                              COBANK, ACB, as Administrative Agent and a Lender

                              By:    /s/      Christopher J. Motl
                                 ------------------------------------------
                                     Name:    Christopher J. Motl
                                     Title:   Vice President

                              GENERAL ELECTRIC CAPITAL CORPORATION, as a Lender

                              By:    /s/      Molly S. Fergusson
                                 ------------------------------------------
                                     Name:    Molly S. Fergusson
                                     Title:   Manager of Operations

                              SUNTRUST BANK, as a Lender

                              By:    /s/      J. Eric Millham
                                 ------------------------------------------
                                     Name:    J. Eric Millham
                                     Title:   Director

                              WEBSTER BANK, as a Lender

                              By:    /s/      Elisabeth V. Piker
                                 ------------------------------------------
                                     Name:    Elisabeth V. Piker
                                     Title:   Vice President

                              BANK OF LANCASTER COUNTY, as a Lender

                              By:    /s/      Randall M. Johnston
                                 ------------------------------------------
                                     Name:    Randall M. Johnston
                                     Title:   Vice President

                                       12

<PAGE>

                              NATIONAL CITY BANK, as a Lender

                              By:    /s/      Jon W. Peterson
                                 ------------------------------------------
                                     Name:    Jon W. Peterson
                                     Title:   Senior Vice President

                              FULTON BANK, as a Lender

                              By:    /s/      William T. Kepler
                                 ------------------------------------------
                                     Name:    William T. Kepler
                                     Title:   Vice President

         IN WITNESS WHEREOF, I have executed this Compliance Certificate as of
September, 12, 2002.

                                     /s/      Thomas E. Morell
                               --------------------------------------------
                               [CHIEF EXECUTIVE OFFICER/CHIEF FINANCIAL OFFICER]
                                D & E Communications, Inc.

                                       13

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