Document:

<PAGE>   1
                                                                   Exhibit 10.17

C L I F F O R D                                   LIMITED LIABILITY PARTNERSHIP
C H A N C E                                                      CONFORMED COPY

                       PTC INTERNATIONAL FINANCE II S.A.

                                      and

                    PTC INTERNATIONAL FINANCE (HOLDING) B.V.

                    ----------------------------------------
                              ONLENDING AGREEMENT
                    ----------------------------------------
<PAGE>   2

                                    CONTENTS
<TABLE>
<CAPTION>

CLAUSE                                                                      PAGE
<S>                                                                         <C>
1.  Definitions And Interpretation.............................................1
2.  The Facility...............................................................2
3.  Purpose....................................................................2
4.  Fee........................................................................2
5.  Interest...................................................................3
6.  Computation................................................................3
7.  Repayment..................................................................3
8.  Other Payments And Indemnities.............................................3
9.  Taxes......................................................................3
10. Guarantee..................................................................3
11. Collection Agent...........................................................4
12. Assignments And Transfers..................................................4
13. Remedies And Waivers, Partial Invalidity...................................4
14. Notices....................................................................4
15. Law And Jurisdiction.......................................................4
16. Counterparts...............................................................5

</TABLE>

<PAGE>   3

THIS AGREEMENT is made on 8 May 2001

BETWEEN

(1)  PTC INTERNATIONAL FINANCE II S.A. ("SA"); And

(2)  PTC INTERNATIONAL FINANCE (HOLDING) B.V. ("BV").

RECITALS

(A)  A wholly owned subsidiary of BV, SA, a company with limited liability
     incorporated under the laws of Luxembourg, has authorised the issue of the
     Notes (as defined below).

(B)  SA wishes to onlend the net proceeds of the issue of the Notes to BV on the
     terms and conditions set out in this Agreement.

IT IS AGREED as follows:

1.   DEFINITIONS AND INTERPRETATION

1.1  In this Agreement the following terms have the meanings given to them in
     this Clause 1.1.

     "ADVANCE" has the meaning specified in Clause 2;

     "EUR" and "EURO" means the lawful currency of the member states of the
     European Union that have adopted the single currency in accordance with the
     treaty establishing the European Community, as amended by the Treaty on
     European Union (signed in Maastricht on 7 February 1992);

     "INDENTURE" means the indenture dated 8 May 2001 between SA, PTC and State
     Street Bank and Trust Company relating to the issue of the Notes;

     "ISSUE OBLIGATIONS" means all of the payment obligations of SA under the
     Relevant Documents which obligations relate to the issue of the Notes,
     including those in respect of the payment of:

     (a)  the principal amount of the Notes, whether upon redemption, repurchase
          or acceleration or at final state of maturity;

     (b)  interest thereon (including any default interest expressed to be
          payable under the Notes and the Indenture and the Special Interest
          expressed to be payable under the Notes);

     (c)  all Additional Amounts; and

     (d)  all and any premiums or penalties payable by SA in respect of any
          amount under or pursuant to the Relevant Documents;

                                      - 1 -

<PAGE>   4

     "FEE" means the fee specified in Clause 4.1;

     "INTEREST PAYMENT DATE" means each date on which interest is payable in
     respect of the Notes to the holders thereof in accordance with the Relevant
     Documents;

     "ISSUE DATE" means 8 May 2001;

     "NOTES" means the Notes issued pursuant to the Relevant Documents;

     "PTC" means Polska Telefonia Cyfrowa Sp. z o.o.;

     "PTC GUARANTEE" means a guarantee given by PTC in relation to the Issue
     Obligations under the Indenture;

     "PURCHASE AGREEMENT" means the Purchase Agreement dated 2 May 2001 between
     SA, Deutsche Bank A.G., London branch and Dresdner Bank A.G., London;

     "REGISTRATION RIGHTS AGREEMENT" means the Registration Rights Agreement
     dated 8 May 2001 between SA, Deutsche Bank A.G., London branch and Dresdner
     Bank A.G., London;

     "RELEVANT DOCUMENTS" means the Notes, the Indenture, the Purchase Agreement
     and the Registration Rights Agreements; and

     "REPAYMENT DATE" means each date on which all or any of the Notes mature
     and fall due for payment in accordance with the Relevant Documents.

1.2  Terms not otherwise defined herein have the meanings ascribed to them in
     the Indenture.

1.3  Clause headings are for ease of reference only.

2.   THE FACILITY

     SA and BV hereby agree that on or promptly after the Issue Date an amount
     equal to the face value of the Notes, being the amount of EUR 200,000,000
     (the "ADVANCE") shall be made by SA to BV hereunder.

3.   PURPOSE

     BV shall, immediately on receipt of the same from SA, on-lend the balance
     of the proceeds of the Advance to PTC.

4.   FEE

4.1  Unless SA and BV shall otherwise agree, a fee (the "FEE") shall be paid by
     BV to SA for the provision of financing services under this Agreement in an
     amount of EUR 67,000 per annum (or such other amount as may be agreed
     between SA and BV).

4.2  SA may reimburse to BV at any time such portion of the Fee as SA may
     determine at its sole discretion.

4.3  The Fee accruing pursuant to Clause 4.1 shall be paid annually or
     semi-annually, in each case on an Interest Payment Date, or as otherwise
     agreed between SA and BV.

                                      - 2 -

<PAGE>   5

5.   INTEREST

5.1  Interest shall accrue on the Advance at the rate of 10.875% per annum (or
     such other rate per annum as may be agreed between SA and BV).

5.2  Accrued interest shall be paid by BV to SA on each Interest Payment Date.

6.   COMPUTATION

     Interest payable under Clause 5 and the Fee payable under Clause 4 shall
     each be computed on the basis of a 360-day year of twelve 30-day months.

7.   REPAYMENT

7.1  BV shall repay the Advance by repaying on each Repayment Date an amount
     equal to such amount of the Notes as matures and is repayable on such date.

7.2  The outstanding principal amount (if any) of the Advance shall be repaid in
     full on 1 May 2008.

8.   OTHER PAYMENTS AND INDEMNITIES

8.1  BV shall, upon demand of SA, pay to SA an amount equal to, or reimburse SA
     for, and/or indemnify SA for and against, all and any amounts of
     operational costs and expenses payable, paid or incurred by SA.

8.2  BV shall, upon demand of SA, pay to SA an amount equal to, or reimburse SA
     for, and/or indemnify SA for and against, all and any amounts of taxes,
     duties and other impositions payable or paid by SA and any costs and
     expenses payable, paid or incurred by SA pursuant to, or in connection
     with, any of the Relevant Documents and any of the documents related
     thereto and the transactions contemplated therein.

9.   SUBORDINATION

     Amounts payable by BV hereunder shall be subordinated to BV's obligations
     in respect of the Senior Debt of PTC to the same extent as (a) SA's
     obligations under the Notes and the Relevant Documents and (b) the PTC
     Guarantee.

10.  TAXES

     All payments to be made by BV hereunder shall be made free and clear of and
     without deduction for or on account of tax unless BV is required to make
     such a payment subject to the deduction or withholding of tax, in which
     case the sum payable by BV in respect of which such deduction or
     withholding is required to be made shall be increased to the extent
     necessary to ensure that, after the making of such deduction or
     withholding, SA receives and retains (free from any liability in respect of
     any such deduction or withholding) a net sum equal to the sum which it
     would have received and so retained had no such deduction or withholding
     been made or required to be made.

11.  GUARANTEE

     To the extent that PTC makes any payment under the PTC Guarantee, such
     payment will discharge pro tanto the obligations of BV hereunder in respect
     of the Issue Obligations

                                      - 3 -

<PAGE>   6

     and BV will be under no obligation to make payment hereunder of an
     equivalent amount in respect thereof.

12.  COLLECTION AGENT

     SA may at any time appoint a financial institution acceptable to SA and BV
     to act as its collection agent for the purpose of collecting on its behalf
     all payments made or to be made by BV to SA hereunder. In the event that SA
     wishes to appoint a collection agent as aforesaid, it shall enter into a
     collection agency agreement with such collection agent in form and
     substance acceptable to it, BV and such collection agent.

13.  ASSIGNMENTS AND TRANSFERS

13.1 This Agreement shall be binding upon and enure to the benefit of each party
     hereto and its or any subsequent successors and assigns.

13.2 SA may at any time assign all or any of its rights, benefits or obligations
     hereunder to any other party.

14.  REMEDIES AND WAIVERS, PARTIAL INVALIDITY

14.1 No failure to exercise, nor any delay in exercising, on the part of any
     party hereto, any right or remedy hereunder shall operate as a waiver
     thereof, nor shall any single or partial exercise of any right or remedy
     prevent any further or other exercise thereof or the exercise of any other
     right or remedy. The rights and remedies herein provided are cumulative and
     not exclusive of any rights or remedies provided by law.

14.2 Without prejudice to any other provision hereof, if one or more provisions
     hereof is or becomes invalid, illegal or unenforceable in any respect in
     any jurisdiction or with respect to any party such invalidity, illegality
     or unenforceability in such jurisdiction or with respect to such party or
     parties shall not, to the fullest extent permitted by applicable law,
     render invalid, illegal or unenforceable such provision or provisions in
     any other jurisdiction or with respect to any other party or parties
     hereto.

15.  NOTICES

15.1 Each notice, request, demand or other communication to be given or made
     under this Agreement shall be in writing by letter or fax, addressed to the
     relevant party at its registered office for the time being or at such other
     address as it may from time to time notify to the other party for this
     purpose.

15.2 Any notice, request, demand or other communication to be given or made to
     either party shall be deemed made or received (a) when confirmation of
     successful transmission thereof is received by the sender (if given or made
     by fax) or (b) when left at the address mentioned above or (c) three days
     after posting addressed as required above (if given or made by letter).

16.  LAW AND JURISDICTION

16.1 This Agreement is governed by, and shall be construed in accordance with,
     the laws of the Netherlands.

                                      - 4 -

<PAGE>   7

16.2 The District Court (Arrondissementsrechtbank) of Amsterdam, Netherlands
     (and any appellate court therefrom) shall have exclusive jurisdiction to
     settle any disputes which may arise out of or in connection with this
     Agreement. This submission is made for the benefit of SA and shall not
     affect its right to take proceedings in any other court of competent
     jurisdiction.

17.  COUNTERPARTS

     This Agreement may be executed in any number of counterparts, all of which
     taken together shall constitute one and the same instrument.

IN WITNESS WHEREOF the hands of the duly authorised representatives of the
parties hereto on the day and year first before written.

PTC INTERNATIONAL FINANCE II S.A.

By: /s/ Josee Weydert        /s/ Stephanie Pautot Martinache

Name: Josee Weydert / Stephanie Pautot Martinache

Title: Attorneys at Law

PTC INTERNATIONAL FINANCE (HOLDING) B.V.

By:

Name: Nanno van der Werff / Alexander de Vreeze (as proxy holders for ABN AMRO
      Trust Company (Nederland) B.V.)

Title: Managing Director

For the purposes of Article 1 of the Protocol annexed to the Convention on the
Jurisdiction and the Enforcement of Judgements in Civil and Commercial Matters,
signed in Brussels on 27 September 1968, and without prejudice to the foregoing
execution of this Agreement by the parties hereto, PTC International Finance II
S.A. expressly and specifically confirms its agreement to the provisions of
Clause 16 (Law and Jurisdiction) of this Agreement.

PTC INTERNATIONAL FINANCE II S.A.

By: /s/ Josee Weydert        /s/ Stephanie Pautot Martinache

                                      - 5 -
<PAGE>   8

Name: Josee Weydert / Stephanie Pautot Martinache

Title: Attorneys at Law

                                      - 6 -<PAGE>   1
                                                                   Exhibit 10.18

C L I F F O R D                                   LIMITED LIABILITY PARTNERSHIP
C H A N C E                                                      CONFORMED COPY

                    PTC INTERNATIONAL FINANCE (HOLDING) B.V.

                                      And

                      POLSKA TELEFONIA CYFROWA SP. Z O.O.

                    ----------------------------------------
                              ONLENDING AGREEMENT
                    ----------------------------------------
<PAGE>   2

<TABLE>
<CAPTION>

                                    CONTENTS

CLAUSE                                                                      PAGE
<S>                                                                         <C>
1.   Definitions And Interpretation............................................1
2.   The Facility..............................................................2
3.   Purpose...................................................................2
4.   Interest..................................................................2
5.   Repayment.................................................................2
6.   Additional Payment Obligations............................................2
7.   Subordination.............................................................3
8.   Taxes.....................................................................3
9.   Guarantee.................................................................3
10.  Collection Agent..........................................................3
11.  Assignments And Transfers.................................................3
12.  Assignments And Transfers.................................................3
13.  Remedies And Waivers, Partial Invalidity..................................4
14.  Notices...................................................................4
15.  Law And Jurisdiction......................................................4
16.  Counterparts..............................................................4
</TABLE>

<PAGE>   3

THIS AGREEMENT is made on 8 May 2001

BETWEEN:

(1)  PTC INTERNATIONAL FINANCE (HOLDING) B.V. ("BV"); and

(2)  POLSKA TELEFONIA CYFROWA SP. Z O.O. ("PTC").

RECITALS

(A)  A wholly owned subsidiary of BV, PTC International Finance II S.A., a
     company with limited liability incorporated under the laws of Luxembourg,
     has authorised the issue of the Notes.

(B)  PTC International Finance II S.A. wishes to onlend the net proceeds of the
     issue of the Notes to BV pursuant to the SA Loan Agreement (as defined
     below).

(C)  BV wishes to further onlend such net proceeds to PTC on the terms and
     conditions set out in this Agreement.

IT IS AGREED as follows:

1.   DEFINITIONS AND INTERPRETATION

1.1  DEFINITIONS

     In this Agreement the following terms have the meanings given to them in
     this Clause 1.1.

     "LOAN OBLIGATIONS" means all the obligations of BV under the SA Loan
     Agreement, including the principal amount of the SA Advance at any time
     outstanding, interest thereon and any other amounts payable by BV under the
     SA Loan Agreement;

     "SA ADVANCE" means a principal amount of the Advance at any time
     outstanding under the SA Loan Agreement; and

     "SA LOAN AGREEMENT" means an onlending agreement dated on or about the date
     hereof between PTC International Finance II S.A. ("SA") as lender and BV as
     borrower.

1.2  Terms not otherwise defined herein have the meanings ascribed to them in
     the SA Loan Agreement.

1.3  Clause headings are for ease of reference only.

                                     - 1 -

<PAGE>   4

2.   THE FACILITY

2.1  BV and PTC hereby agree that on the date on which the SA Advance is made by
     SA to BV under the SA Loan Agreement, an advance in the amount of EUR
     200,000,000 (the "BV ADVANCE") shall be made by BV to PTC.

3.   PURPOSE

3.1  PTC shall apply the proceeds of the BV Advance for general corporate
     purposes.

4.   INTEREST

4.1  Interest shall accrue on the Advance at the rate of 10.875% per annum (or
     such other rate per annum as may be agreed between BV and PTC).

4.2  Accrued interest shall be paid by PTC to BV on each Interest Payment Date.

4.3  Interest shall be computed on the basis of a 360-day year of twelve 30-day
     months.

5.   REPAYMENT

5.1  PTC shall repay the BV Advance by repaying on each Repayment Date an amount
     equal to such amount of the Notes as matures and is payable on such date.

5.2  The outstanding principal amount (if any) of the BV Advance shall be repaid
     in full on 1 May 2008.

6.   ADDITIONAL PAYMENT OBLIGATIONS

6.1  PTC shall on each Interest Payment Date pay to BV an amount equal to the
     Fee (as defined in Clause 4.1 of the SA Loan Agreement) payable by the BV
     to SA under the SA Loan Agreement on such Interest Payment Date. BV may
     (but shall not be obliged to) reimburse PTC at any time for such portion of
     any amount paid by PTC pursuant to this Clause 6.1 as it may determine at
     its sole discretion.

6.2  PTC shall, from time to time upon demand of BV, pay to BV a fee payable in
     respect of financial services rendered by BV to PTC in relation to this
     Agreement, such fee to be agreed from time to time between BV and PTC.

6.3  PTC shall, upon demand of BV, pay to BV an amount equal to all and any
     amounts payable by BV pursuant to Clause 8.1 of the SA Loan Agreement.

6.4  PTC shall, upon demand of BV, pay to BV an amount equal to all and any
     amounts of taxes, duties and other impositions payable or paid by BV and
     any costs and expenses payable, paid or incurred by BV pursuant to, or in
     connection with, any of the Relevant Documents and any of the documents
     related thereto, and the transactions contemplated therein and all and any
     amounts payable or paid by BV pursuant to Clause 8.2 of the SA Loan
     Agreement.

6.5  Notwithstanding any other provision contained herein, if any time an amount
     payable by BV to SA pursuant to Clause 5 or, as the case may be, Clause 7
     of the SA Loan Agreement is greater than that payable pursuant to Clause 4
     or, as the case may

                                     - 2 -
<PAGE>   5

     be, Clause 5 of this Agreement on the corresponding Interest Payment Date
     or, as the case may be, Repayment Date hereunder, then the amount payable
     hereunder shall be increased to equal the amount payable pursuant to Clause
     5 or, as the case may be, Clause 7 of the SA Loan Agreement.

7.   SUBORDINATION

     Amounts payable by PTC hereunder shall be subordinated to PTC's obligations
     under its Senior Debt to the same extent as the PTC Guarantee.

8.   TAXES

     All payments to be made by PTC hereunder shall be made free and clear of
     and without deduction for or on account of tax unless PTC is required to
     make such a payment subject to the deduction or withholding of tax, in
     which case the sum payable by PTC in respect of which such deduction or
     withholding is required to be made shall be increased to the extent
     necessary to ensure that, after the making of such deduction or
     withholding, BV receives and retains (free from any liability in respect of
     any such deduction or withholding) a net sum equal to the sum which it
     would have received and so retained had no such deduction or withholding
     been made or required to be made.

9.   GUARANTEE

     To the extent that PTC makes any payment under the PTC Guarantee, such
     payment will discharge pro tanto the obligations of PTC hereunder in
     respect of the Loan Obligations and PTC will be under no obligation to make
     payment hereunder of an equivalent amount in respect thereof.

10.  COLLECTION AGENT

     BV may at any time appoint a financial institution acceptable to BV and PTC
     to act as its collection agent for the purpose of collecting on its behalf
     all payments made or to be made by PTC to BV hereunder. In the event that
     BV wishes to appoint a collection agent as aforesaid, it shall enter into a
     collection agency agreement with such collection agent in form and
     substance acceptable to it, PTC and such collection agent.

11.  ASSIGNMENTS AND TRANSFERS

11.1 This Agreement shall be binding upon and enure to the benefit of each party
     hereto and its or any subsequent successors and assigns.

11.2 BV may at any time assign all or any of its rights, benefits or obligations
     hereunder to any other party.

12.  ASSIGNMENTS AND TRANSFERS

12.1 This Agreement shall be binding upon and enure to the benefit of each party
     hereto and its or any subsequent successors and assigns.

12.2 SA may at any time assign all or any of its rights, benefits or obligations
     hereunder to any other party.

                                     - 3 -
<PAGE>   6

13.  REMEDIES AND WAIVERS, PARTIAL INVALIDITY

13.1 No failure to exercise, nor any delay in exercising, on the part of any
     party hereto, any right or remedy hereunder shall operate as a waiver
     thereof, nor shall any single or partial exercise of any right or remedy
     prevent any further or other exercise thereof or the exercise of any other
     right or remedy. The rights and remedies herein provided are cumulative and
     not exclusive of any rights or remedies provided by law.

     Without prejudice to any other provision hereof, if one or more provisions
     hereof is or becomes invalid, illegal or unenforceable in any respect in
     any jurisdiction or with respect to any party such invalidity, illegality
     or unenforceability in such jurisdiction or with respect to such party or
     parties shall not, to the fullest extent permitted by applicable law,
     render invalid, illegal or unenforceable such provision or provisions in
     any other jurisdiction or with respect to any other party or parties
     hereto.

14.  NOTICES

14.1 Each notice, request, demand or other communication to be given or made
     under this Agreement shall be in writing by letter or fax, addressed to the
     relevant party at its registered office for the time being or at such other
     address as it may from time to time notify to the other party for this
     purpose.

14.2 Any notice, request, demand or other communication to be given or made to
     either party shall be deemed made or received (i) when confirmation of
     successful transmission thereof is received by the sender (if given or made
     by fax) or (ii) when left at the address mentioned above or (iii) three
     days after posting addressed as required above (if given or made by
     letter).

15.  LAW AND JURISDICTION

15.1 This Agreement is governed by, and shall be construed in accordance with,
     the laws of the Netherlands.

15.2 The District Court (Arrondissementsrechtbank) of Amsterdam, Netherlands
     (and any appellate court therefrom) shall have exclusive jurisdiction to
     settle any disputes which may arise out of or in connection with this
     Agreement. This submission is made for the benefit of BV and shall not
     affect its right to take proceedings in any other court of competent
     jurisdiction.

16.  COUNTERPARTS

     This Agreement may be executed in any number of counterparts, all of which
     together shall constitute one and the same instrument.

IN WITNESS WHEREOF the hands of the duly authorised representatives of the
parties hereto on the day and year first before written.

                                     - 4 -
<PAGE>   7
PTC INTERNATIONAL FINANCE (HOLDING) B.V.

By:   /s/ Nanno van der Werff /s/ Alexander de Vreeze

Name: Nanno van der Werff / Alexander de Vreeze (as proxy holders for ABN AMRO
      Trust Company (Nederland) B.V.)

Title: Managing Director

POLSKA TELEFONIA CYFROWA SP. Z O.O.

By:   /s/ Wojciech Ploski /s/ Jonathan Eastick

Name: Wojciech Ploski / Jonathan Eastick

Title: Director of Strategy, Marketing and Sales / Director of Finance

                                     - 5 -

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00028-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00028-of-00352.parquet"}]]