5.2.2 Possible impact that may happen to the general business operation The mentioned-above impact may cause the service for customers faulty or impossible, and it will bring about dissatisfaction to the service users. 5.2.3 Possible impact from external factors If outside agencies are not prepared to the Y2K problem, it may have problems as follows: 5.2.3.1 Banking system may not be able to allow its customers to pay for charges through the banks or service counter. 5.2.3.2 Network system of the Telephone Organization of Thailand may not allow the customer to telephone the 152 center. 5.2.3.3 Computer system of the Internet Service Provider (ISF) may not allow access to the home page of www.phonelink.net. 5.2.3.4 The information system of Telerate may cause the information received incorrect. 5.2.3.5 Paging system of Singapore Telecom may not be able to send roaming messages crossing to Singapore. 5.3 Plan for solving the problem 5.3.1 Guidelines and methods for solving the problem 5.3.1.1 Main work system of computer 5.3.1.1.1 Upgrading hardware and Firmware of the BAS and 152 systems. 5.3.1.1.2 Upgrading operating system (OS) of the BAS and 152 systems. 5.3.1.1.3 Upgrading database management of the BAS system. 5.3.1.1.4 Revising applications such as -Revising the scheduled page -Developing the StockALERT again -Revising the value of expiry date for the closing service for a repair of hardware -Revising the prorate computation 5.3.1.2 Telephone Exchange Cabinet system Upgrading the software of the telephone exchange cabinet. 5.3.1.3 Office system Surveying of office equipment in parts that may have impact from the Y2K. 5.3.1.4 External agencies Contacting and coordinating with external agencies to check for preparation of readiness to support the Y2K problem of such agencies. 5.3.2 Phases in solving the problem 5.3.2.1 Preliminary phase is an appointment of a working committee consisting of seven persons taking responsibility for the Y2K problem. 5.3.2.2 Inventory analysis phase is a collection of all items involving the Y2K. 5.3.2.3 Impact analysis phase by studying the impact results on all kinds of equipment. 5.3.2.4 Correction phase. 5.3.2.5 Testing phase. 5.3.2.6 Implementation phase. Action Plans 1998 1999 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 1)Preliminary Phase x Year 2000 Education x Setup Year 2000 Committee x 2)Inventory Analysis Phase x x x Inventory of all computer ans non- computer equipment. x x x 3)Impact Analysis Phase x x Identification of impact computer and equipment x Identification of impact program and data x x Software and hardware upgrade strategy x x File/Database conversion strategy x 4)Correction Phase x x Hardware and firmware upgrade/replacement x x Software and operating system upgrade x x Program and data conversion x File/Database conversion x Bridging all x 5)Testing Phase x x Unit Testing x x System and acceptance testing x 6)Final Implementation Phase x Implementation of production system change x Migration to production x 5.3.3 Group of persons or agencies responsible for solving the problem Agency Name-Surname Title -------------------------------------------------------------- Head of Committee Khun Thakonrat Kaewkan Operation Director Information system Khun Werasak Ramnerattanakul IS Division Manager Khun Boonchin Wattanachanon IS Development Manager Khun Saneh Phum-iem System Engineer Supervisor Khun Suphachai Pitarachat System Engineer --------------------------------------------------------------- Engineering Khun Suwit Pinmaneewong Engineer Operation Manager Khun Kriangsak Suwantha Engineer Planning Manager -------------------------------------------------------------- 5.3.4 Expected expenditure for the operation The Company has started upgrading some of the operating system, while the rest is expected to require another 20 million baht to fix it. 5.3.5 Preparation for a standby and backup plans 5.3.5.1 On the Scheduled page, it is required to correct the software until it can be adjusted to make a scheduled date as if it were the actual date. 5.3.5.2 The StockALERT system can fix the office days or weekends by the manual system. 5.3.5.3 Adjustment of time in the telephone exchange cabinet can be postdated for the system can work normally. 5.3.5.4 To backup all the information by the 31st December, 1999. 5.4 Operation to solve the problem of the Company at present The operation to make correction of the Company now it is underway on the inventory analysis phase, to study for impact analysis phase and start upgrading and correcting some of the system. 5.5 Analysis and explanation of the management The main work system of ADVANCE Ltd. has been corrected since 1997 and being applied at present are the registration system, SC billing, receiving payment and these systems are being newly developed again for flexibility in providing service to mobile telephone users and can support the Y2K. The telephone exchange system has been given a guarantee letter by its manufacturer stating that it can solve the Y2K problem adequately. For the part required correction now is the adjustment of the PCs and their application, which expected to be completed by December 1998. The Company is confident that every system of the Company can solve the Y2K problem sufficiently. 6. Verification Data We have already checked all the text and data present in this report form and hereby certify that they are correct and completed. No misunderstanding contents as well as the loss of relevant information that may causes damages to a person holding securities or making a tender offer, has been found in this report. For the purpose of authentication that this report is a certified document set, we have assigned Mrs. Arpattra Sringkarrinkul to be an authorised person, by affixing his signature for authentication on each page of this document set. If any document does not contain the signature of Mrs. Arpattra Sringkarrinkul, we here by regard that it is not our certified data. Name Position Signature 1. Mr. Boonklee Plangsiri Director -Signature- 2. Mr. Niyom Purakum (Ph.D.) Director -Signature- 3. Mr. Somprasong Boonyachai Director -Signature- 4. Mr. Suwimol Kaewkoon Director -Signature- Authorised Appointee Mrs. Arpattra Sringkarrinkul Vice President Operation Support -Signature-