- Translation - CP- AIS 020/2004 March 1, 2004 Re: Notification of the Book Closing for Principal and Interest Payment of Debentures of the Company (AIS063A) To: The President The Stock Exchange of Thailand Refer to: The Letter No. IVS 04/0325 of DBS THAI DANU BANK on February 27, 2004 Advanced Info Service Public company Limited ("the Company") would like to inform you that the Company will close the registered book for interest and principal payment of debentures of the Company (AIS063A), the details are shown in the referenced letter. Please be informed accordingly. Sincerely Yours, (Signed) Mr. Anek Pana-apichon Vice President - Accounting and Finance Shin Corporation Group Group Compliance Tel. 0 2299 5561 Referenced Letter IVS 04/0325 February 207, 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 announce that the registered book of AIS063A will be closed from 12.00 on March 9, 2004 for the right to receive the interest. AIS063A will be paid the interest on March 23, 2004 with interest rate 5.30 % from the period of September 23, 2003 to March 22, 2004 for 182 days and principal repayment at THB 125 per unit. Yours faithfully, (Klairoong Tamanakijprasart) Manager IVS Operations Department Registrar & Paying Agent IVS Operations Department Tel. 0-2230-5575, 0-2230-5487