IP-PBX AND A METHOD OF DIRECT CALL BETWEEN HEAD OFFICE AND BRANCH

摘要

PURPOSE: A telephone number storing method according to direct call between an internet phone switch and a branch office are provided to make a call by storing a telephone number which is frequently used to a memory of the branch office. CONSTITUTION: An internet phone is made between a head office in which an address server(110) is equipped and each branch office in which an internet exchanger is equipped. As to the address server, the internet exchanger and the telephone number in which the terminal is connected are stored. As to the internet exchanger, the terminal is connected. The internet phone switch installs the memory in which it stores the telephone number in the internet exchanger installed. The telephone number in which the usage frequency is high is stored.