Translation AIS 395/2002 October 14, 2002 Re : Notification of the progress of the offering of debentures To : President The Stock Exchange of Thailand Pursuant to the Extraordinary General Meeting of Shareholders of Advanced Info Service Public Company Limited (the Company) No. 1/2545, held on March 8, 2002, the meeting approved the issuance and offering of unsubordinated and unsecured debentures of the Company in the amount not exceeding Baht 20,000 million. On March 21, 2002, debentures in the amount of Baht 10,000 million were issued and offered, leaving a remainder of Baht 10,000 million of unissued debentures. As the Company is in the process of issuing and offering debentures No. 4/2002 in the amount not exceeding Baht 6,000 million, the Company would like to report the preliminary features of the debentures as follows: Type of Debentures Amortizing unsubordinated, unsecured debentures, bearing debentureholders' name and having a debentureholders' representative Maturity Five years from the issue date Placement Institutional investors Amount to be Offered 5 million units at par value of Baht 1,000, totaling Baht 5,000 million Greenshoe Option 1 million units totaling Baht 1,000 million Total Amount to be Offered Not exceeding 6 million units, totaling Baht 6,000 million Offering Price Baht 1,000 (at par) Interest Rate 3.35%-3.55% Interest Payment The Company will pay interest every 6 months, on April 21 and October 21 of every year Amortizing Features The Company will pay 5 equal installments commencing at the end of year 3. The first redemption payment will be on October 21, 2005. Credit Rating AA- rating by Thai Rating Information Service Co., Ltd. (TRIS) Redemption The Company will redeem the debentures on the last due date by paying the remaining principal and last interest payment Subscription period October 17-18, 2002 Debentureholders' representative Siam Commercial Bank Lead Arrangers for Debentures Standard Chartered Bank, Bangkok Branch Deutsche Bank, Bangkok Branch Co-Arrangers for Debentures DBS Vickers Securities (Thailand) Co., Ltd. Barclays Capital Securities (Thailand) Co., Ltd. The details of the registration statement of securities offering and the draft prospectus of the Company can be viewed at www.sec.or.th Please be informed accordingly. Yours Faithfully, -Signed- Mr. Somprasong Boonyachai Director Advanced Info Service Public Company Limited