- Translation - AIS-CP 009/2009 February 5, 2009 Subject: Notification of the book closing for interest payment of debentures of the Company (AIS099A, AIS119A and AIS139A) To: The President The Stock Exchange of Thailand Refer to: 1. The letter no. SSO.SS&IBO.09/0488 of TMB Bank Plc. on February 5, 2009 2. The letter no. SSO.SS&IBO.09/0490 of TMB Bank Plc. on February 5, 2009 3. The letter no. SSO.SS&IBO.09/0492 of TMB Bank Plc. on February 5, 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 (AIS099A, AIS119A and AIS139A), 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 No. 1 SSO.SS&IBO.09/0488 February 5, 2009 President The Stock Exchange of Thailand 62 Rachadapisek Road, Bangkok 10110 RE : Scheduled closing the registered book for AIS099A Dear Sir, We, TMB BANK Public Company Limited. As a Registrar & Paying Agent Debentures of ADVANCED INFO SERVICE PUBLIC COMPANY LIMITED NO.1/2006, SERIES 1 DUE 2009 would like to announce that the registered book of AIS099A will be closed on February 23, 2009 for the right to receive the interest for the period # 5. AIS099A will be paid the interest on March 9, 2009 with interest rate 5.80 % from the period of September 7, 2008 to March 6, 2009 for 181 days. Yours faithfully, (Mr.Apichart Watanaphusitsagul) Authorized Signature Registrar and Paying Agent SSO.SS&IBO Tel. 0-2230-6203, 0-2230-5487 Referenced Letter No. 2 SSO.SS&IBO.09/0490 February 5, 2009 President The Stock Exchange of Thailand 62 Rachadapisek Road, Bangkok 10110 RE : Scheduled closing the registered book for AIS119A Dear Sir, We, TMB BANK Public Company Limited. As a Registrar & Paying Agent Debentures of ADVANCED INFO SERVICE PUBLIC COMPANY LIMITED NO.1/2006, SERIES 2 DUE 2011 would like to announce that the registered book of AIS119A will be closed on February 23, 2009 for the right to receive the interest for the period # 5. AIS119A will be paid the interest on March 9, 2009 with interest rate 5.90 % from the period of September 7, 2008 to March 6, 2009 for 181 days. Yours faithfully, (Mr.Apichart Watanaphusitsagul) Authorized Signature Registrar and Paying Agent SSO.SS&IBO Tel. 0-2230-6203, 0-2230-5487 Referenced Letter No. 3 SSO.SS&IBO.09/0492 February 5, 2009 President The Stock Exchange of Thailand 62 Rachadapisek Road, Bangkok 10110 RE : Scheduled closing the registered book for AIS139A Dear Sir, We, TMB BANK Public Company Limited. As a Registrar & Paying Agent Debentures of ADVANCED INFO SERVICE PUBLIC COMPANY LIMITED NO.1/2006, SERIES 3 DUE 2013 would like to announce that the registered book of AIS139A will be closed on February 23, 2009 for the right to receive the interest for the period # 5. AIS139A will be paid the interest on March 9, 2009 with interest rate 6.00 % from the period of September 7, 2008 to March 6, 2009 for 181 days. Yours faithfully, (Mr.Apichart Watanaphusitsagul) Authorized Signature Registrar and Paying Agent SSO.SS&IBO Tel. 0-2230-6203, 0-2230-5487