- Translation - CP- AIS 072/2004 June 10, 2004 Re: Notification of the Book Closing of Debentures of the Company (AIS04NA, AIS06NA, AIS063A, AIS073A, AIS093A and AIS093B) To: The President The Stock Exchange of Thailand Refer to: The Letter No. IVS 04/0942, IVS 04/0944, IVS 04/0946, IVS 04/0948, IVS 04/0949, IVS 04/0951 of DBS THAI DANU BANK on June 9, 2004 Advanced Info Service Public company Limited ("the Company") would like to inform you that the Company will close the registered book for delivery the documents to bondholders regarding to the merger and acquisition with the Thai Military Bank plc., the details are shown in the referenced letter. Please be informed accordingly. Sincerely Yours, (Signed) Mr. Pong-Amorn Nimpoonsawat Chief Finance Officer Advanced Info Service Public company Limited Group Compliance Tel. (02) 299-5552 Referenced Letter IVS 04/0952 June 9, 2004 President The Stock Exchange of Thailand 62 Rachadapisek Road, Bangkok 10110 RE : Scheduled closing the registered book for AIS04NA Dear Sir, We, DBS THAIDANU BANK As a Registrar & Paying Agent Debentures of ADVANCED INFO SERVICE PUBLIC COMPANY LIMITED NO.2/2001, DUE 2004 ,would like to inform you that the company will closed the registered book on 12.00 on June 21,2004 for delivery the documents to bondholders regarding to the merger and acquisition with the Thai Military Bank plc. Yours faithfully, (Klairoong Tamanakijprasart) Manager IVS Operations Department Registrar & Paying Agent IVS Operations Department Tel. 0-2230-5575, 0-2230-5487 IVS 04/0950 June 9, 2004 President The Stock Exchange of Thailand 62 Rachadapisek Road, Bangkok 10110 RE : Scheduled closing the registered book for AIS06NA Dear Sir, We, DBS THAIDANU BANK As a Registrar & Paying Agent Debentures of ADVANCED INFO SERVICE PUBLIC COMPANY LIMITED NO.3/2001, DUE 2006 ,would like to inform you that the company will closed the registered book on 12.00 on June 21,2004 for delivery the documents to bondholders regarding to the merger and acquisition with the Thai Military Bank plc. Yours faithfully, (Klairoong Tamanakijprasart) Manager IVS Operations Department Registrar & Paying Agent IVS Operations Department Tel. 0-2230-5575, 0-2230-5487 IVS 04/0947 June 9, 2004 President The Stock Exchange of Thailand 62 Rachadapisek Road, Bangkok 10110 RE : Scheduled closing the registered book for AIS063A Dear Sir, We, DBS THAIDANU BANK As a Registrar & Paying Agent Debentures of ADVANCED INFO SERVICE PUBLIC COMPANY LIMITED NO.1/2001, DUE 2006, would like to inform you that the company will closed the registered book on 12.00 on June 21,2004 for delivery the documents to bondholders regarding to the merger and acquisition with the Thai Military Bank plc. Yours faithfully, (Klairoong Tamanakijprasart) Manager IVS Operations Department Registrar & Paying Agent IVS Operations Department Tel. 0-2230-5575, 0-2230-5487 IVS 04/0945 June 9, 2004 President The Stock Exchange of Thailand 62 Rachadapisek Road, Bangkok 10110 RE : Scheduled closing the registered book for AIS073A Dear Sir, We, DBS THAIDANU BANK As a Registrar & Paying Agent Debentures of ADVANCED INFO SERVICE PUBLIC COMPANY LIMITED NO.3/2002, DUE 2007, would like to inform you that the company will closed the registered book on 12.00 on June 21,2004 for delivery the documents to bondholders regarding to the merger and acquisition with the Thai Military Bank plc. Yours faithfully, (Klairoong Tamanakijprasart) Manager IVS Operations Department Registrar & Paying Agent IVS Operations Department Tel. 0-2230-5575, 0-2230-5487 IVS 04/0941 June 9, 2004 President The Stock Exchange of Thailand 62 Rachadapisek Road, Bangkok 10110 RE : Scheduled closing the registered book for AIS093A Dear Sir, We, DBS THAIDANU BANK As a Registrar & Paying Agent Debentures of ADVANCED INFO SERVICE PUBLIC COMPANY LIMITED NO.1/2002, DUE 2009 , would like to inform you that the company will closed the registered book on 12.00 on June 21,2004 for delivery the documents to bondholders regarding to the merger and acquisition with the Thai Military Bank plc. Yours faithfully, (Klairoong Tamanakijprasart) Manager IVS Operations Department Registrar & Paying Agent IVS Operations Department Tel. 0-2230-5575, 0-2230-5487 IVS 04/0943 June 9, 2004 President The Stock Exchange of Thailand 62 Rachadapisek Road, Bangkok 10110 RE : Scheduled closing the registered book for AIS093B Dear Sir, We, DBS THAIDANU BANK As a Registrar & Paying Agent Debentures of ADVANCED INFO SERVICE PUBLIC COMPANY LIMITED NO.2/2002, DUE 2009 , would like to inform you that the company will closed the registered book on 12.00 on June 21,2004 for delivery the documents to bondholders regarding to the merger and acquisition with the Thai Military Bank plc. Yours faithfully, (Klairoong Tamanakijprasart) Manager IVS Operations Department Registrar & Paying Agent IVS Operations Department Tel. 0-2230-5575, 0-2230-5487