PRIVATE BRANCH EXCHANGE

摘要

PROBLEM TO BE SOLVED: To provide a private branch exchange by which a same system call code (SYS-ID) is set to a general base station by the plural private branch exchanges. SOLUTION: A private branch exchange(PBX) that stores a base station CS making communication with a mobile station PS is provided with a means that reads a system call code from a management base station which stores in advance the system call code and registers the system call code, even for base stations belonging to the same group as the management base station.