- Translation - CP- AIS 060/2004 May 21, 2004 Re: Notification of the Book Closing for Interest Payment of Debentures of the Company (AIS073A) To: The President The Stock Exchange of Thailand Refer to: The Letter No.IVS 04/0827 of DBS THAI DANU BANK on May 24,2004 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 (AIS073A), 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) 299-5561 Referenced Letter IVS 04/0827 May 24, 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 announce that the registered book of AIS073A will be closed from 12.00 on June 7, 2004 for the right to receive the interest. AIS073A will be paid the interest on June 21, 2004 with interest rate 5.25 % from the period of March 21, 2004 to June 20, 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 2