- Translation - CP- AIS 006/2004 January 30, 2004 Re: Notification of the Book Closing for Interest Payment of AIS06NA To: The President The Stock Exchange of Thailand Refer to: The Letter No. IVS 04/0152 of DBS THAI DANU BANK on January 30, 2004 Advanced Info Service Public company Limited ("the Company") would like to inform you that the Company will close the registered book for interest payment of debentures of the Company No. 3/2001, due 2006 (AIS06NA), the details are shown in the referenced letter. Please be informed accordingly. Sincerely Yours, (Signed) Mr. Pong-Amorn Nimpoonsawat Chief Financial Officer Advanced Info Service Public Company Limited Group Compliance Tel. 0 2299 5561 IVS 04/0152 January 30, 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 announce that the registered book of AIS06NA will be closed from 12.00 on February 16, 2004 for the right to receive the interest. AIS06NA will be paid the interest on March 1, 2004 with interest rate 5.85 % from the period of November 28, 2003 to February 27, 2004 for 92 days. Yours faithfully, (Klairoong Tamanakijprasart) Manager IVS Operations Department Registrar & Paying Agent IVS Operations Department Tel. 0-2230-5575, 0-2230-5487