PURPOSE: To enable a user to set automatically a parameter necessary for discriminating a terminal by storing an ISDN digital communication network in the subscriber's station network terminating equipment of an ISDN telephone system through network terminating equipment, and connecting plural ISDN telephone terminals by bus connection
CONSTITUTION: At the time when the ISDN telephone terminal 20 is connected to a bus by a user, the ISDN telephone terminal 20 detects the bus connection by a connection detection circuit 24. Then, it informs a call control message processing part 25 of the request of information related to the terminal such as a sub address and a terminal attribute, etc. The subscriber's station network terminating equipment 10 detects the information request from a received call control message, and sends the request information related to the terminal such as the sub address and the terminal attribute, etc., to the ISDN telephone terminal 20 connected to the bus through an extension side interface circuit 13 and a communication control part 14. The ISDN telephone terminal 20 instructs a display part 26 to display it, and makes it the terminal discrimination information of the call controlling procedure of an incoming call, and the display part 26 displays the request information, and shows it to the user.
ISAKA KIYOMI
YAMAMOTO GOJI
