-Translation - AIS-CP 149/2005 November 23, 2005 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. 05/2622 of TMB Bank Plc. on November 22, 2005 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 Referenced Letter IVS 05/2622 November 22, 2005 President The Stock Exchange of Thailand 62 Rachadapisek Road, Bangkok 10110 RE : Scheduled closing the registered book for AIS073A Dear Sir, We, TMB BANK Public Company Limited. 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 December 7, 2005 for the right to receive the interest for the period # 15. AIS073A will be paid the interest on December 21, 2005 with interest rate 5.25 % from the period of September 21, 2005 to December 20, 2005 for 91 days. Yours faithfully, (Klairoong Tamanakijprasart) Manager IVS & IB Ops. Department Registrar & Paying Agent IVS & IB Ops. Department Tel. 0-2230-5575, 0-2230-5487