-Translation- AIS-CP 016/2007 February 20, 2007 Subject: Notification of the Book Closing for Interest Payment and Principal for the last period of AIS073A and suspending of AIS073A,and Book Closing for Interest Payment of AIS093A and AIS093B To: The President The Stock Exchange of Thailand Refer to: 1. The Letter No.IVS.IB 07/0788 of TMB Bank Plc. on February 19, 2007 2. The Letter No.IVS.IB 07/0783 of TMB Bank Plc. on February 19, 2007 3. The Letter No.IVS.IB 07/0785 of TMB Bank Plc. on February 19, 2007 Advanced Info Service Public Company Limited ("the Company") would like to inform you that the Company will close the registered book for interest payment and principal for the last period of AIS073A for redemption and suspended trading of AIS073A, the details are shown in the referenced letter no.1 and the Company will close the registered book for interest payment of AIS093A and AIS093B, the details are shown in the referenced letter no. 2 and 3. Please be informed accordingly. Yours faithfully, -Signed- Mr.Pong-Amorn Nimpoonsawat Chief Finance Officer Advanced Info Service Public Company Limited Referenced Letter No. 1 IVS.IB 07/0788 February 19, 2007 President The Stock Exchange of Thailand 62 Rachadapisek Road, Bangkok 10110 RE : Closing the registered book for redemption and suspended trading of AIS073A We, TMB BANK Public Company Limited.,as a Registrar & Paying Agent of Debentures of ADVANCED INFO SERVICE PUBLIC COMPANY LIMITED NO.3/2002, DUE 2007 would like to announce that the registered book of redemption on AIS073A will be closed from 12.00 on March 7, 2007 for the right to receive the interest and principal for the last period which will be paid on March 21, 2007 with interest rate 5.25 % from the period of December 21, 2006 to March 20, 2007 for 90 days and principal repayment at THB.1,000.00 per unit. Therefore, to comply with the settlement and securities transfer system, AIS has asked the SET to suspend trading of AIS073A effective between March 2, 2007 to March 21, 2007 and delisted from SET since March 22, 2007 onwards. The further details of the redemption are as follows; - In case that bondholders would like to redeem by themselves, they should contact Registrar at TMB Bank Plc. Silom Soi 7 Branch Computer Building 2nd Floor, Silom Road, Bangrak, Bangkok 10500 and will get principal and interest by cheque from 19-21 March,2007 - In case that the redemption process was done by registered mail, bondholders should send their debenture certificates by registered mail to Registrar at TMB Bank Plc. Silom Soi 7 Branch Computer Building 2nd Floor, Silom Road, Bangrak, Bangkok 10500 within March 7,2007. Upon Receipt the registrar will deliver cheque of principal and interest via registered mail within March 15, 2007 at their address which are in the registrar book at 12.00 hours of March 7, 2007 Yours faithfully, TMB Bank Public Company Limited. (Miss.Poonsri Solgosoom) Authorized Signature Registrar and Paying Agent Investment Services Operations Division Tel. 0-2230-6061,0-2230-5731 Referenced Letter No. 2 IVS.IB.07/0783 February 19, 2007 President The Stock Exchange of Thailand 62 Rachadapisek Road, Bangkok 10110 RE : Scheduled closing the registered book for AIS093A Dear Sir, We, TMB BANK Public Company Limited. As a Registrar & Paying Agent Debentures of ADVANCED INFO SERVICE PUBLIC COMPANY LIMITED NO.1/2002, DUE 2009 would like to announce that the registered book of AIS093A will be closed from 12.00 on March 7, 2007 for the right to receive the interest for the period # 10. AIS093A will be paid the interest on March 21, 2007 with interest rate 6.25 % from the period of September 21, 2006 to March 20, 2007 for 181 days. Yours faithfully, TMB Bank Public Company Limited. (Miss.Poonsri Solgosoom) Authorized Signature Registrar and Paying Agent Investment Services Operations Division Tel. 0-2230-6061,0-2230-5731 Referenced Letter No.3 IVS.IB.07/0785 February 19, 2007 President The Stock Exchange of Thailand 62 Rachadapisek Road, Bangkok 10110 RE : Scheduled closing the registered book for AIS093B Dear Sir, We, TMB BANK Public Company Limited. As a Registrar & Paying Agent Debentures of ADVANCED INFO SERVICE PUBLIC COMPANY LIMITED NO.2/2002, DUE 2009 would like to announce that the registered book of AIS093B will be closed from 12.00 on March 7, 2007 for the right to receive the interest for the period # 10. AIS093B will be paid the interest on March 21, 2007 with interest rate 6.60 % from the period of September 21, 2006 to March 20, 2007 for 181 days and principal repayment at THB. 166.6667 per unit Yours faithfully, TMB Bank Public Company Limited. (Miss.Poonsri Solgosoom) Authorized Signature Registrar and Paying Agent Investment Services Operations Division Tel. 0-2230-6061,0-2230-5731