SERVICE SYSTEM AND METHOD FOR ATTACHING CALLER NUMBER NOTIFICATION

PROBLEM TO BE SOLVED: To notify a subscriber registration ID to a callee terminal even at the time of using a public telephone terminal by allowing a center to authenticate a password, to collate an ID with a subscriber registration ID from the password and ID inputted by a caller terminal and to instruct and control an exchange to transmit the subscriber registration ID when both authentication and collation results are possible. SOLUTION: When a public telephone terminal 100 performs special number transmission, a caller receiving exchange 200 connects it to an ID center 300. The center 300 transmits voice guidance to the user of the terminal 100, receives button operation input information (password and ID) of the user and performs authentication processing and collation processing. When authentication and collation are possible, the center 300 indicates the caller receiving exchange 200 to perform connection to a callee terminal 600 requested by the terminal 100 and to display the subscriber registration ID in which the terminal 100 is registered with a network and the collation result becomes possible on the terminal 600.