COMMUNICATION SYSTEM, MAIN APPARATUS FUNCTION BACKUP METHOD, MAINTENANCE MANAGEMENT CENTER, AND USER SYSTEM

摘要

PROBLEM TO BE SOLVED: To rapidly and properly back up a main apparatus without any human resources when a fault occurs in the main apparatus.;SOLUTION: A maintenance management center CC monitors an operation state of the main apparatus BT of a user system CM periodically via an Internet INW, and if of a fault is found on the basis of the monitoring result, the center CC automatically switches corresponding IP telephone terminals DKT1-DKTn from the apparatus BT to a backup main apparatus CBT in the center CC and connects them to the apparatus CBT.;COPYRIGHT: (C)2004,JPO