- Translation - AIS-CP 143/2004 September 27, 2004 Re: The addition of the notification of the Book Closing for Interest Payment of Debentures of the Company (AIS070A) To: The President The Stock Exchange of Thailand Refer to: The Letter No. CMD 31-471022 of The Siam Commercial Bank Public Company Limited on September 27, 2004 Advanced Info Service Public company Limited ("the Company") would like to notify further information on interest calculation of coupon payment of debentures of the Company (AIS070A), 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 CMD.31 471022 27 September 2004 Notification of Book Closed Date for Interest Payment Managing Director The Stock Exchange of Thailand Reference is Letter No. CMD 31- 470997 dated 21 September 2004 The Bank as a capacity of Registrar of the amortizing debentures issued by Advanced Info Service Public Company Limited (AIS070A), who earlier informed details of the Book Closed Date of the Debentures above in the reference Letter,would like to notify further information on interest calculation of coupon payment which is due on 21 October 2004 as follows ; " Calculation period is starting from 21 April 2004 to 20 October 2004 totaling 183 days." Please be informed accordingly Yours faithfully, The Siam Commercial Bank Public Company Limited (Authorized Signatory)