- Translation - AIS-CP 032/2009 March 31, 2009 Subject: Notification of the book closing for interest payment of debentures of the Company (AIS134A) To: The President The Stock Exchange of Thailand Refer to: The letter no. SSO.SS&IBO.09/1227 of TMB Bank Plc. on March 31, 2009 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 (AIS134A), 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 Plc. Referenced Letter SSO.SS&IBO.09/1227 March 31, 2009 President The Stock Exchange of Thailand 62 Rachadapisek Road, Bangkok 10110 RE : Scheduled closing the registered book for AIS134A Dear Sir, We, TMB BANK Public Company Limited. As a Registrar & Paying Agent Debentures of ADVANCED INFO SERVICE PUBLIC COMPANY LIMITED NO.1/2008, DUE 2013 would like to announce that the registered book of AIS134A will be closed on April 16, 2009 for the right to receive the interest for the period # 4. AIS134A will be paid the interest on April 30, 2009 with interest rate 4.00 % from the period of January 30, 2009 to April 29, 2009 for 90 days. Yours faithfully, Apichart Watanaphusitsagul (Mr.) Authorized Signature Registrar and Paying Agent Securities Services and Investment Banking Operations Department Tel. 0-2230-6061,0-2230-5731