Document:

<PAGE>
                                                                    Exhibit 4.21

                                FIRST AMENDMENT
                                      FOR
                              DEVELOPMENT CONTRACT
                            PSTN EXCELLENCE REGIONAL
                               JUNCTION DIVRE-II

                                    BETWEEN

                         PERUSAHAAN PERSEROAN (PERSERO)
                       PT TELEKOMUNIKASI INDONESIA, TBK.

                                      AND

                         CONSORTIUM OLEX-LUCENT-BRIMBUN

                         NO. PKS.155/HK.820/UTA-00/2002

                             DATED AUGUST 22, 2002
<PAGE>

                                 FIRST AMENDMENT
                                       FOR
                              DEVELOPMENT CONTRACT
                            PSTN EXCELLENCE REGIONAL
                                JUNCTION DIVRE-II
                                     BETWEEN
                         PERUSAHAAN PERSEROAN (PERSERO)
                       PT. TELEKOMUNIKASI INDONESIA, Tbk.
                                       AND
                         CONSORTIUM OLEX-LUCENT-BRIMBUN

                      NUMBER: PKS. 155 /HK.820/UTA-00/2002

On this TWENTY-SECOND day, of AUGUST, year, TWO THOUSAND TWO placed at Jakarta,
between the concerned parties:

I.       PERUSAHAAN PERSEROAN (PERSERO) PT. TELEKOMUNIKASI INDONESIA, Tbk.,
         which has been announced in State Gazette of the Republic of Indonesia
         No. 5 dated January 17, 1992, additional State Gazette of the Republic
         of Indonesia No. 210, which has been several times changed and its
         latest announcement in State Gazette of the Republic of Indonesia No.
         92 dated November 17, 2000, supplement to State Gazette of the Republic
         of Indonesia No.336, having its address at Jalan Japati No. 1 Bandung
         40133, in this legal act represent by, TRI DJATMIKO, HEAD OF
         DEVELOPMENT DIVISION, based on the Power of Attorney of President
         Director Number : K.TEL. 107/HK510/UTA-00/02 dated 15 August 2002,
         hereinafter referred to as TELKOM.

II.      CONSORTIUM OLEX,- LUCENT - BRIMBUN, a consortium formed by Notaries
         Deed No. 9 dated 14th December 2001, in front of Notary Benny Djaja,
         SH, SE, MM., having its address at Wisma Bisnis Indonesia 15th Floor,
         Jl. Letjen S. Parman Kav. 12, Jakarta-11480 whereas in this legal act
         to be represented by FADJAR TJOANDA, as PRESIDENT DIRECTOR of PT Olex
         Cables Indonesia.

                                        1
<PAGE>

CONSORTIUM OLEX-LUCENT-BRIMBUN consists of:

a.       PT OLEX CABLES INDONESIA, having its address at Wisma Bisnis Indonesia,
         15 th Floor, Jakarta, as CONSORTIUM LEADER, hereinafter referred to as
         OLEX;

b.       PT LUCENT TECHNOLOGIES INDONESIA, having its address at Cibitung, as
         CONSORTIUM MEMBER, hereinafter referred to as LUCENT;

c.       PT BRIMBUN RAYA INDAH, having its address at Jakarta Barat, as
         CONSORTIUM MEMBER, hereinafter referred to BRIMBUN;

Hereinafter all together in this First Amendment referred to as PARTNER.

Considering the under mentioned as follows:

a.       whereas, TELKOM and PARTNER has been bound each other in Development
         Contract PSTN Excellence Regional Junction DIVRE II Number:
         PKS.14/HK810/UTA-00/2002 dated 8 February 2002, hereinafter referred to
         as "MAIN CONTRACT";

b.       whereas, based on the Official Note of DIRKUG to DIRNISJASTEL Number:
         C. Tel. 228/KU000/KUG-00/2002 dated 29 July 2002 concerning Financing
         of Project of PSTN Junction DIVRE II, the Board of Directors of TELKOM
         has decided that financing of Project of PSTN Junction DIVRE II will be
         financed by TELKOM;

c.       whereas, based on the Letter of DIRJAR to PARTNER Number: Tel.
         354/KUG-000/PEM-00/2002 dated 9 August 2002 concerning Financing of
         Project of PSTN Junction DIVRE II, PARTNER has been informed by TELKOM
         that financing of Project of PSTN Junction DIVRE II will be financed by
         TELKOM.

                                        2
<PAGE>

d.       whereas, based on the Official Note of DIRPRANTEK to KADIVPEM Number:
         C.TEL.16/LG000/TEK-30/2001 dated 7 February 2002 concerning The
         Responsibility of Project Implementation of Partnership Program of HPBB
         Sumatera, PSTN Excellence Junction Divre II and Divre V, KADIVPEM had
         been appointed to implement the development of PSTN Excelence Regional
         Junction DIVRE II;

e.       whereas, based on Minutes of Meeting dated, 21 August 2002, TELKOM and
         PARTNER agree that TELKOM will make payment at the period of 21 (twenty
         one) calendar days after date of invoice completely and valid receipt
         by TELKOM, should TELKOM fail to settle the payment in the period
         above, then TELKOM will be penaltized 17 % (seventeen percent) per year
         of the price of the delayed RING, total amount of this penalty shall
         not exceed 5 % (five percent).

Now, therefore, In consideration on the above mentioned, TELKOM and PARTNER
agree to amend some articles in the Main Contract subject to the following terms
and conditions:

                                    ARTICLE 1

TELKOM and PARTNER agree to amend letter m. sub-article (1) Article 1 of the
Main Contract, become the following condition:

m.       EFFECTIVE DATE OF CONTRACT (EDC) means the date when the last of the
         following event has occurred:

         i.       The Main Contract and this First Amendment has been signed
                  by both TELKOM and PARTNER.

         ii.      PARTNER's submission of Performance Bond to TELKOM.

         iii.     After PARTNER received a Confirmation Letter from TELKOM
                  concerning the Work should be started.

                                       3
<PAGE>

                                    ARTICLE 2

TELKOM and PARTNER agree to amend sub-article (1) Article 8 of the Main
Contract, become the following condition:

(1)      PARTNER shall give notice of the schedule of PROVISIONAL ACCEPTANCE
         TEST officially to TELKOM c.q DIVPEM at latest 14 (fourteen) calendar
         days prior to commencement of PROVISIONAL ACCEPTANCE TEST of each RING
         SYSTEM AFTER SUBMIT THE RESULT OF COMMISIONING TEST. TELKOM shall
         notify its approval for the notified schedule of PROVISIONAL
         ACCEPTENCE TEST within 7 (seven) calendar days after its receipt of
         the notice from PARTNER. TELKOM may propose other PROVISIONAL
         ACCEPTANCE TEST schedule which shall not be later than 7 (seven)
         calendar days after PARTNER's proposed date.

                                   ARTICLE 3

TELKOM and PARTNER agree to amend sub-article (2) Article 12 of the Main
Contract, become the following condition:

(2)      Authorization to supervise the Implementation during construction shall
         be done by TELKOM cq. DIVPEM.

                                    ARTICLE 4

TELKOM and PARTNER agree to amend Article 13 of the Main Contract, become the
following condition:

                                   Article 13
                                FIELD SUPERVISOR

TELKOM cq. DIVPEM will issue appointment letter of FIELD SUPERVISOR (WASPANG),
after PARTNER giving a written request to implement development:

                                       4
<PAGE>

                                    ARTICLE 5

TELKOM and PARTNER agree to amend Article 15 of the Main Contract, become the
following conditions:

                                   Article 15
                                     REPORT

(1)      PARTNER shall submit weekly report for the progress of Implementation
         which shall be approved by WASPANG (Field Supervisor) to TELKOM cq.
         DIVPEM based on implementation schedule and working weight Including
         technical problem or other problems.

(2)      PARTNER shall officially report all implementation activities every
         month to TELKOM cq. DIVPEM.

                                    ARTICLE 6

TELKOM and PARTNER agree to amend sub-article (4), (6) and (7), and delete
sub-article (8) Article 18 of the Main Contract, become the following
condition:

(4)      Payment as specified in sub-article (1), (2) and (3) of this Article
         shall be made by TELKOM to PARTNER by telegraphic transfer through;

         Bank Account, under the name of:

         PT. Olex Cables Indonesia
         Account No. : CM 052 GRBR (Rp.)
                       CM 052 GRBU(US$)
         Bank Name   : Bank Finconesla Jakarta
         Address     : Central Senayan I Lt. 6,
                       Jl. Asia Afrika No. 8
                       Jakarta - 10270

In accordance with the payment amount belongs to PARTNER's rights where the
bank transfer fee shall be imposed to PARTNER by auto deduction from the paid
amount.

In the event that PARTNER changes the Bank and Bank Account, the PARTNER should
report it in written to TELKOM cq. DIVPEM, a copy of which should be submitted
to AVP CASH MANAGEMENT CORPORATE OFFICE.

                                        5
<PAGE>

(6)      After fulfillment of above complete conditions mentioned in sub article
         (5) of the Article 18 of Main Contract, then TELKOM will make payment
         at latest 21 (twenty one) calendar days after date of invoice
         completely and valid receipt by TELKOM.

(7)      Should TELKOM fall to settle the payment as specified in sub-article
         (6) of this Article, then TELKOM will be charged 17 % (seventeen
         percent) per year of the price of the delayed RING, total amount of
         this charged shall not exceed 5 % (five percent).

                                    ARTICLE 7

TELKOM and PARTNER agree to amend sub-article (1) Article 20 of the Main
Contract, become the following condition:

(1)      PARTNER shall submit performance guarantee issued by Indonesian State
         Owned Bank or reputable International Bank amounting 5% (five percent)
         of total WORK Amount excluding 10% VAT to TELKOM c.q AVP CASH
         MANAGEMENT CORPORATE OFFICE.

                                    ARTICLE 8

TELKOM and PARTNER agree to amend sub-article (1) Article 33 of the Main
Contract, become the following condition:

(1)      Any correspondence including necessary notification shall be addressed
         to each parties concerned with following address and attention:

         TELKOM : DIVISI PEMBANGUNAN

         Adress : Gedung Grha Citra Caraka Lt. 5
                  Jl. Gatot Subroto 52
                  Jakarta-12710

         No. Tlp./Fax. : 021-5215513 / 021-5215197

                                        6
<PAGE>

         MITRA: PT. OLEX CABLES INDONESIA

         Adress : Wlsma Bisnis Indonesia Lt.5
                  JL.S. Parman Kav.12
                  Jakarta 11480

         No.Tlp./Fax.: 021-5357443 / 021-5357243

                                    ARTICLE 9

(1)      All attachment in this First Amendment shall be an unity that could not
         be separated and having equal legality and binding one to each other
         same as condition mentioned in Article of this First Amendment.

(2)      Attachment as mentioned in clause (1) of this Article consists of:

Attachment I:
       Official Note of DIRKUG to DIRNISJASTEL
       No. : C. Tel. 228/KU000/KUG-13/2002
       tanggal 29 Juli 2002.

Attachment II:
       Letter of DIRJAR to Consortium OLB No.:
       Tel. 354/KUG-000/PEM-00/2002 dated 9
       August 2002.

Attachment III:
       Official Note of DIRPRANTEK to KADIVPEM
       No. : C.TEL. 16/LG000/TEK-30/2001
       tanggal 7 Februari 2002.

Attachment IV:
       Minutes of Meeting dated 21 August 2002.

                                   ARTICLE 10

(1)      This First Amendment shall be effect as of the date after signing by
         both parties.

(2)      Articles and / or Attachments of the Main Contract which are not
         amended by this First Amendment, shall remain prevail and legally
         binding by both parties.

                                        7
<PAGE>

(3)      Copy from this Original Amendment was made in 25 (twenty five) copies
         by PARTNER on PARTNER's own cost for the purpose of supervision of
         implementation and others.

<Table>
<S>                                                      <C>
         PT. TELEKOMUNIKASI INDONESIA, Tbk,                     KONSORSIUM
                                                           OLEX-LUCENT-BRIMBUN,
                  /s/ Tri Djatmiko
              -----------------------                             [STAMP]

                    TRI DJATMIKO                            /s/ Fajar Tjoanda
             -------------------------                   -----------------------
             KEPALA DIVISI PEMBANGUNAN
                                                                FAJAR TJOANDA
                                                         -----------------------
                                                           PIMPINAN KONSORSIUM
</Table>

                                       8<PAGE>
                                                                    Exhibit 4.22

                                SECOND AMENDMENT
                                      FOR
                              DEVELOPMENT CONTRACT
                            PSTN EXCELLENCE REGIONAL
                               JUNCTION DIVRE-II

                                    BETWEEN

                         PERUSAHAAN PERSEROAN (PERSERO)
                       PT TELEKOMUNIKASI INDONESIA, TBK.

                                      AND

                         CONSORTIUM OLEX-LUCENT-BRIMBUN

                         NO. PKS.192/HK.820/UTA-00/2002

                             DATED October 25, 2002
<PAGE>

                                SECOND AMENDMENT
                                       FOR
                              DEVELOPMENT CONTRACT
                            PSTN EXCELLENCE REGIONAL
                                JUNCTION DIVRE-II
                                     BETWEEN
                         PERUSAHAAN PERSEROAN (PERSERO)
                       PT. TELEKOMUNIKASI INDONESIA, TBK.
                                       AND
                         CONSORTIUM OLEX-LUCENT-BRIMBUN

                      NUMBER : PKS. 192/HK.820/UTA-00/2002

On this TWENTY FIVE day, of OCTOBER year TWO THOUSAND TWO placed at Jakarta,
between the concerned parties:

I.       PERUSAHAAN PERSEROAN (PERSERO) PT. TELEKOMUNIKASI INDONESIA, Tbk.,
         which has been announced in State Gazette of the Republic of Indonesia
         No. 5 dated January 17, 1992, additional State Gazette of the Republic
         of Indonesia No. 210, which has been several times changed and its
         latest announcement in State Gazette of the Republic of Indonesia No.
         45 dated May 4, 2002, supplement to State Gazette of the Republic of
         Indonesia No. 5495, having its address at Jalan Japati No. 1 Bandung
         40133, in this legal act represent by, TRI DJATMIKO, HEAD OF
         DEVELOPMENT DIVISION, based on the Power of Attorney of President
         Director Number : K.TEL. 107/HK510/UTA-00/02 dated 15 August 2002,
         hereinafter referred to as TELKOM.

II.      CONSORTIUM OLEX - LUCENT - BRIMBUN, a consortium formed by Notaries
         Deed No. 9 dated 14th December 2001, in front of Notary Benny Djaja,
         SH, SE, MM., having its address at Wisma Bisnis Indonesia 15th Floor,
         Jl. Letjen S. Parman Kav. 12, Jakarta-11480 whereas in this legal act
         to be represented by FADJAR TJOANDA, as President Director of PT. Olex
         Cables Indonesia,

                                       1
<PAGE>
         CONSORTIUM OLEX - LUCENT - BRIMBUN consist of:

         PT. OLEX CABLES INDONESIA, having its address at Wisma Bisnis Indonesia
         15th Floor, Jakarta, as CONSORTIUM LEADER, hereinafter referred to as
         OLEX.

         PT LUCENT TECHNOLOGIES INDONESIA, having its address at Tifa Building
         3th Floor, Jakarta, as CONSORTIUM MEMBER, hereinafter referred to as
         LUCENT.

         PT. BRIMBUN RAYA INDAH, having its address at Jakarta Barat, as
         CONSORTIUM MEMBER, hereinafter referred to as BRIMBUN.

         hereinafter all together in this Amendment referred to as PARTNER.

Considering the under mentioned as follows:

a.       whereas, TELKOM and PARTNER has been bound each other in Development
         Contract PSTN Excellence Regional Junction DIVRE II Number :
         PKS.14/HK810/UTA-00/2002 dated 8 February 2002, hereinafter referred to
         as "MAIN CONTRACT";

b.       whereas, TELKOM and PARTNER has changed some articles in the Main
         Contract as described in First Amendment for Development Contract PSTN
         Excellence Junction Divre-II Number : PKS.155/HK820/UTA-00/2002 dated
         22 August 2002, hereinafter referred to as "FIRST AMENDMENT";

c.       whereas, PARTNER has submitted the Performance Bond for PSTN Excellence
         Regional Junction Divre-II Project to TELKOM dated 19 September 2002
         (ATTACHMENT II);

d.       whereas, TELKOM has decided that the Work shall be effective as
         described in the letter Number : Tel. 144/TK000/PEM-40/2002 dated 16
         September 2002 (ATTACHMENT III);

                                        2

<PAGE>

e.       whereas, TELKOM and PARTNER has implemented Pre - Design Review Meeting
         (Pre-DRM) as described in ATTACHMENT XIII;

f.       whereas TELKOM and PARTNER has implemented Pre - Design Review
         Meeting (Pre-DRM) as described in ATTACHMENT XIV;

g.       whereas, TELKOM has agreed that the Work price based on the result of
         DRM as stated in letter Number : TEL606/LG270/PRM-00/2002 dated October
         21, 2002 (ATTACHMENT I);

Now, therefore, in consideration on the above mentioned, TELKOM and PARTNER
agree to amend some articles in the Main Contract and First Amendment subject to
the following terms and conditions:

                                    ARTICLE 1

To amend letter a. and delete letter f. sub-article (2) Article 2 (Scope of
Work) of the Main Contract, become the following condition :

a.       Implementation of PSTN Excellence Junction DIVRE -II in accordance with
         the result of survey, design and Design Review Meeting (DRM) as
         specified in ATTACHMENT XIV of this Amendment, which in principal,
         consists of development of System RINGs and other work:

         1)       RING X,

         2)       RING Y,

         3)       RING 1,

         4)       RING 2,

         5)       RING 3,

         6)       RING 4,

         7)       RING 5,

         8)       RING 6,

         9)       RING 7,

         10)      RING 8,

         11)      RING 9,

         12)      RING 10,

         13)      RING 11

         14)      RING 12

         15)      RING 13

                                        3

<PAGE>

         16)      RING 14

         17)      RING 15

         18)      Training (SDH & DXC)

         19)      Network Management Systems (NMS)

         20)      Spare

         21)      Supporting Facilities

                                    ARTICLE 2

To amend sub-article (1) and (2) Article 3(Contract Amount) of the Main
Contract, become the following condition:

(1)      Value of WORK for this Amendment is amounting US $ 26,240,958.85
         (TWENTY SIX MILLION, TWO HUNDRED FORTY THOUSAND, NINE HUNDRED FIFTY
         EIGHT AND EIGHTY FIVE CENTS US DOLLARS) and Rp. 110.762.409.000,- (ONE
         HUNDRED AND TEN BILLION, SEVEN HUNDRED AND SIXTY TWO MILLION, FOUR
         HUNDRED AND NINE THOUSAND RUPIAH) EXCLUDING 10% VAT, consists of:

<TABLE>
<CAPTION>
                                        US D                IDR               US D             IDR
                                      SEBELUM          SEBELUM PPn          SESUDAH        SESUDAH PPn
NO         (SCOPE OF WORK)            PPn 10%              10%              PPn 10%            10%
--      ---------------------      -------------     ----------------    -------------  -----------------
<S>     <C>                        <C>               <C>                 <C>            <C>
 1      Ring X                      8,177,564.39     21,808,724,500,-     8,995,320.83   23.989.596.950,-
 2      Ring Y                      4,204,047.86     19.883.460.800,-     4.624.452,64   21.871.806.880,-
 3      Ring l                      2,754,164.26     16.461.817.700,-     3,029,580.69   18.107.999.470,-
 4      Ring 2                      1,134,022.00      2.330.941.700,-     1,247,424.20    2.564.035.870,-
 5      Ring 3                      1,105,277.00      2.406.408.500,-     1.215.804,70    2.647.049.350,-
 6      Ring 4                      1,755,768.00      3.119.467.500,-     1.931.344.80    3.431.414.250,-
 7      Ring 5                      1,439,308.62     13.938.915.500,-     1,583,239.49   15.332.807.050,-
 8      Ring 6                        318,340.00      1.046.903.200,-       350,174.00    1.151.593,520,-
 9      Ring 7                        480,409.00      2.380.266.900,-       528,449.90    2.618.293.590,-
10      Ring 8                         51,122.86      1.003.281.100,-        56,235.15    1.103.609.210,-
11      Ring 9                        286,296.00      1.009.257.500,-       314,925.60    1.110.183.250,-
12      Ring 10                       242,580.42      1.630.089.300,-       266,838.46    1.793.098.230,-
13      Ring 11                       526,171.29      1.448.933.100,-       578,788.42    1.593.826.410,-
14      Ring 12                       345,060.11      1.946.302.900,-       379,566.12    2.140.933.190,-
15      Ring 13                       264,170.24      1.528.089.700,-       290,587.27    1.680.898.670,-
16      Ring 14                       500,096.63      5.897.287.300,-       550,106.29    6.487.016.030,-
17      Ring 15                       760,960.16      7.766.009.900,-       837,056.17    8.542.610.890,-
18      Training SDH                  118,394.00                            130,233.40
19      Training DXC                                    312.000.000,-                       343.200.000,-
20      NMS                         1,364,093.00      4.602.492.100,-     1,500,502.30    5.062.741.310,-
21      Spare                         413,113.00         55.459.600,-       454,424.30       61.005.560,-
22      Supporting Facilities                           186.300.200                         204.930.220,-
                                   -------------     ---------------     -------------  ---------------
        TOTAL PROYEK               26,240,958.85     110.762.409.000,    28,865,054.73  121.838.649.900
                                   -------------     ---------------     -------------  ---------------
</TABLE>

                                        4
<PAGE>

(2)  Value of WORK for this Amendment is ON SITE price basis and LANDED COST,
     includes fee for delivery of GOODS and SERVICES under PARTNER'S
     responsibility, also includes packing fee, freight, insurance, Taxes,
     Stamp-duty, and other duties in accordance with Government Rules as
     specified in detailed in ATTACHMENT XI of this Amendment.

                                    ARTICLE 3

To amend sub-article (1) and add 1 (one)sub-article, become sub-article (2) of
Article 4 (Contract Implementation Period) of the Main Contract, become the
following condition:

(1)  TELKOM and PARTNER agree to implement the WORK under the main Contract,
     First Amendment and this Amendment, based on schedule as specified in
     ATTACHMENT IV, which finalization of the Work as summarized below:

<TABLE>
<CAPTION>
NO        SCOPE OF WORK                            FINISH
--        -------------                            ------
<S>       <C>                                  <C>
 1          Ring X                             27 Desember 2002
 2          Ring Y                               26 Maret 2003
 3          Ring 1                               27 Juni 2003
 4          Ring 2                              22 Agustus 2003
 5          Ring 3                              22 Agustus 2003
 6          Ring 4                              7 November 2003
 7          Ring 5                               18 Juli 2003
 8          Ring 6                             19 Desember 2003
 9          Ring 7                              9 Januari 2004
10          Ring 8                             14 November 2003
11          Ring 9                             20 Februari 2004
12          Ring 10                            20 Februari 2004
13          Ring 11                            20 Februari 2004
14          Ring 12                              12 Maret 2004
15          Ring 13                              19 Maret 2004
16          Ring 14                              19 Maret 2004
17          Ring 15                              19 Maret 2004
18          Training SDH                         25 Juni 2003
19          Training DXC                       22 Januari 2003
20          NMS                                  31 Maret 2003
21          Spare                                26 Maret 2004
22          Supporting Facilities              20 November 2002
</TABLE>

                                       5
<PAGE>
     a.   Acceptance test and integration of WORK to existing equipment in
          accordance with agrred test procedure by both parties as specified in
          ATTACHMENT XIV this Amendment.

(2)  The completion of the whole work as described in sub-article (1) of this
     Article is stated by signing of documents as follows:

     a.   Provisional Acceptance Certificate (PAC), for acceptance of each RING
          system, Network or Management System (NMS) or Supporting Facilities,

     b.   Provisional Acceptance Certificate (PAC) for acceptance of Spare,

     c.   Completion Certificate of Training.

                                    ARTICLE 4

To amend letter c. sub-article (1) Article 1 and letter a. sub-article (2)
Article 5 (Right and Obligation) of the Main Contract, become the following
condition:

(1)  c.  To make the payment of the development in accordance with Article 2 of
         this Amendment.

(2)  a.  To receive the payment of the development in accordance with Article 2
         of this Amendment.

     c.  To conduct a training for TELKOM's employees as specified in
         ATTACHMENT VIII of this Amendment in which the training cost has
         already included in this Contract.

                                    ARTICLE 5

To amend sub-article (7) Article 6 of the First Amendment, become the following
condition :

(7)  Should TELKOM fail to settle the payment as specified in sub-article (2) of
     this Amendment, then TELKOM will be charged with on interest rate 17 %
     (seventeen percent) per year of the price excluding VAT 10 % of the delayed
     payment of the

                                       6
<PAGE>
     RING, Network Management System (NMS), Training, Spare or Supporting
     Facilities, total amount of this charged shall not exceed 5 % (five
     percent).

                                    ARTICLE 6

To amend letter a. Article 7 (Conditions for Implementation Development) of the
Main Contract, become the following condition :

a.   Technical Specificationsn aand TELKOM's requirements according to
     ATTACHMENT X of this Amendment.

                                    ARTICLE 7

To amend sub-article (2) Article 8 (Acceptance Test) of the Main Contract,
become the following condition:

(2)  Acceptance Test will be conducted in accordance with agreed procedure and
     measurement / parameter as specified in ATTACHMENT XIV of this Amendment.
     TELKOM will issue the Provisional Acceptance Test based on good and
     acceptable result.

                                    ARTICLE 8

To amend sub-article (1) Article 11 (Warranty Period) of the Main Contract,
become the following condition:

(1)  Warranty Period of the WORK for each RING, Network Management System (NMS)
     or Supporting Facilities under the Main Contract, First Amendment and this
     Amendment is 1 (one) year from signing date of Provisional Acceptance Test
     (PAC).

                                    ARTICLE 9

To amend sub-article (1), delete sub-article (3), amend sub-article (4), and
amend letters a, d, e, sub-article (5) Article 18 (Payment) of the Main
Contract, become the following condition:

                                       7
<PAGE>

(1)  Payment will be made by TELKOM CQ. GM AREA II DIVPEM after each RING as
     specified in sub-article (1) Article 3 of this Amendment has been completed
     and will be operated, also after the issuance of PAC for relevant RING,
     Network Management System (NMS) or Supporting Facilities which has been
     completed, and PAC for Spare and Completion Certificater of Training as
     specified in ATTACHMENT IV of this Amendment.

(4)  In accordance with PARTNER'S request as specified in ATTACHMENT VI of this
     Amendment, payment as specified In Article 2 of this Amendment shall be
     made by TELKOM cq, Divpem via Corporate Office's account to PARTNER by
     telegraphic transfer through :

     a.   BANK ACCOUNT, on behalf OF:

          PT Olex Cables Indonesia
          Account No. : 102-0102001309 (IDR)
          Bank name   : Bank Mandiri
          Address     : Sub - Jakarta Sudirman

          Account No. :  070-0002156268 (USD)
          Bank name   :  Bank Mandiri
          Address     :  Plaza Mandiri Branch
                         Jakarta

     b.   Bank Account, on behalf of:

          PT LucentTechnologies Network Systems
          Indonesia
          Account No. : 103248035 (IDR)
                        103248515 (USD
          Bank Name   : CITIBANK
          Address     : Landmark, Jakarta

     c.   Bank Account, on behalf of:

          PT Brimbun Raya Indah
          Account No  : 60.000001420.001 (IDR)
          Bank Name   : BNI
          Address     : Dukuh Bawah Branch
                        Jakarta

In accordance with the payment amount belongs to the right of the names above,
where the bank transfer fee shall be imposed to the names above by auto
deduction from the paid amount as specified in ATTACHMENT V and XI of this
Amendment.

                                       8
<PAGE>

In the event that each name changes the Bank and Bank Account, they should
report it in written to TELKOM cq. KA DIVPEM cq. Kabid Adkug Divpem.

(5)  a. 1 (one) Original and 2 (two) copies Simple Receipt;

     d.   1 (one) copy of Quality Assurance Guarantee for relevant RING, or
          Network Management System (NMS) or Supporting Facilities.

     e.   1 (satu) Original and 3 (three) copies PAC for relevant RING, or
          Network management System (NMS) or Supporting facilities, PAC for
          Spare or Completion Certificate for Training;

                                   ARTICLE 10

To amend sub-article (1) Article 19 (Taxes and Duties) of the Main Contract,
become the following condition :

(1)  CONTRACT amount as mentioned in sub-article (1) Article 2 of this Amendment
     EXCLUDING VAT 10 %.

                                   ARTICLE 11

To amend sub-article (1) Article 7 of the First Amendment, become the fallowing
condition :

(1)  PARTNER shall submit. Performance Guarantee issued by an Indonesia State
     Owned Bank or a reputable International Bank or Lost Insurance Company
     amounting 5 % (five percent) of total WORK amount to TELKOM cq. KABID ADKUG
     DIVPEM:

                                   ARTICLE 12

To amend sub-article (1) Article 21 (Quality Assurance Guarantee) of the main
Contract, become the following condition:

                                       9
<PAGE>

(1)      PARTNER is responsible to submit Maintenance Guarantee Bond to TELKOM
         cq. Kabid Adkug DIVPEM issued by an Indonesian State Owned Bank or a
         reputable International Bank amounting 5 % (five percent) excluded VAT
         10 % of the RING, Network Management System or Supporting Facilities
         which has been completed totally, and having validity for 1 (one) year
         after signing date of Provisional Acceptance Certificate (PAC).

                                   ARTICLE 13

TELKOM and PARTNER agree to amend sub-article (1) and (3), and delete
sub-article (2) Article 22 (Insurance) of the Main Contract, become the
following condition:

(1)      PARTNER is responsible to cover all risks of delivery, storage and
         installation of GOODS and SERVICES until the issuance of PAC for and on
         behalf of TELKOM as beneficiary.

(3)      At the time of submission of payment, copy of Insurance Policy or Cover
         Note should be attached.

                                   ARTICLE 14

To add 1 (one) sub-article in Article 23 (Quality Assurance) of the Main
Contract, shall be sub-article (5), become the following condition:

(5)      PARTNER is responsible to submit a Statement for all guarantee as
         specified in sub-article (1), (2), (3), and (4) Article 23 of the main
         Contract to TELKOM cq. KADIVPEM.

                                   ARTICLE 15

To amend sub-article (1) Article 38 (Penalty) of the Main Contract, become the
following condition:

(1)      In case PARTNER could not complete the WORK per RING, Network
         Management System, Spare, Training or Supporting Facilities as its
         obligation in accordance with

                                       10
<PAGE>

         the implementation schedule as specified in Article 3 of this
         Amendment, then PARTNER will be penaltized 10/00 (one per thousand) per
         day of the delayed work. However, total amount of this penalty shall
         not exceed 5 % (five percent.)

                                   ARTICLE 16

To delete Article 30 (System Support) of the Main Contract.

                                   ARTICLE 17

All attachment as follows shall be an unity that could not be separated of this
Amendment, consist of:

Attachment I :
         TELKOM'S approval letter

Attachment II:
         Performance Guarantee

Attachment III:
         TELKOM's Letter of Intent

Attachment IV :
         Time Schedule

Attachment V
         Disbursement Schedule

Attachment VI :
         OLB'S Letter

Attachment VII :
         Minutes of Meeting of Clarification and Negotiation of New Item

Attachment VIII :
         Training Document

Attachment IX :
         Specimen of Signature

Attachment X :
         Scope of Work

Attachment XI :
         Price Table

                                       11
<PAGE>

Attachment XII :
         Site Survey Report

Attachment XIII:
         Result of Pre-DRM

Attachment XIV:
         Result of DRM

                                   ARTICLE 18

(1)      This Amendment shall be effect as of the date after signing by both
         parties.

(2)      Articles and / or Attachments of the Main Contract and First Amendment
         which are not amended by this Amendment, shall remain prevail and
         legally binding by both parties.

(3)      Copy from this Original Amendment was made in 25 (twenty five) copies
         by PARTNER on PARTNER's own cost for the purpose of supervision of
         implementation and others.

<Table>
<S>                                                        <C>

          PT. TELEKOMUNIKASI INDONESIA, Tbk,                     KONSORSIUM
                                                            OLEX-LUCENT-BRIMBUN,
                   /s/ Tri Djatmiko
                   ----------------                                [STAMP]

                     TRI DJATMIKO                            /s/ Fadjar Tjoanda
               ------------------------                      ------------------
               KEPAL DIVISI PEMBANGUNAN
                                                               FADJAR TJOANDA
                                                             -------------------
                                                             PIMPINAN KONSORSIUM
</Table>

                                       12

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