| 摘要 |
PURPOSE:To avoid outsiders from taking account transaction information out of a terminal equipment by holding a date when a circuit is cut in the preceding time in the corresponding customer records of customer files contained in the terminal equipment and a center computer respectively and updating said date stored in both customer files every time an inquiry is received from the terminal equipment. CONSTITUTION:A preceding cut date check module 17 compares the preceding circuit cutting date included in an inquiry request telegram with the preceding circuit cutting data stored in the corresponding customer record. When coincidence is obtained between both dates, a transaction detail extracting module 18 is called out. Thus the inquiry request telegram received from a terminal equipment 12 is given to the module 18 together with said customer record. While a telegram showing the inhibition of the terminal is sent to the equipment 12 in case no coincidence is obtained between both dates. In such a way, the collation of the preceding connection information is added for confirmation of the customer. As a result, an outsider is unable to take the account information out of the equipment 12. |
