TRUNK STATE ON-LINE BACK-UP METHOD OF FULL EXCHANGE

摘要

The method comprises 4 steps. The 1st step looks up the kind of event if occurs according to the call progression when a subscriber tries to get a call related to the relay line. In the 2nd step the corresponding process is done according to the result of event lookup. The 3rd step backs up on-linely the event process information to the other relay control processor. In the 4th step the status relay line control processor looks up the backed-up information and conducts the corresponding status management.