PURPOSE: To make a function convenient when a call is performed again by storing the extension number on the side of the caller corresponding to an incoming call side telephone set and notifying this extension number to an incoming call side telephone set requesting the caller number notification service after the call is terminated.
CONSTITUTION: A reception figure analysis part 21 performs a mutual connection when the dial number from an extension telephone set 1 is an extension number and makes a caller temporary saving part 22 store the extension numbers (a) and (b) of the caller and incoming call telephone sets A and B. When this call is terminated, the analysis part 21 receives the special number of the caller extension number notification C from the telephone set B, the number a is determined from the saving part 22 and is transmitted to a guidance request part 23. The request part 23 makes a notification C controller 3 convert the number (a) into voice and transmit the voice to the telephone B via a converter 2, and the analysis part 21 performs a mutual connection if the extension is diconnected within a certain time. Thus, the telephone set B recognizes the number (a) by voice and the call can be performed again by automatically originating the call without dialing if the line is disconnected.
KAWASAKI YUJI
YAGIHASHI TOSHIYUKI
