-Translation- AIS-CP 146/2006 November 21, 2006 Subject: Notification of the Book Closing for Interest Payment of Debenture of the Company (AIS073A) To: The President The Stock Exchange of Thailand Refer to: The Letter No. ISO-IVS. 06/3854 of Thai Military Bank Plc. On November 21, 2006. 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 debenture of the Company (AIS073A), the details are shown in the referenced letter. Please be informed accordingly. Yours faithfully, (Signed) Pong-Amorn Nimpoonsawat (Mr.) Chief Finance Officer Advanced Info Service Public Company Limited. Reference Letter ISO.IVS.06/3854 November 21, 2006 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, 2006 for the right to receive the interest for the period # 19. AIS073A will be paid the interest on December 21, 2006 with interest rate 5.25 % from the period of September 21, 2006 to December 20, 2006 for 91 days. Yours faithfully, TMB Bank Public Company Limited. (Mrs.Klairoong Tamanakijprasart ) Authorized Signature Registrar and Paying Agent ISO.IVS & IBO Tel. 0-2230-5731, 0-2230-5487