DUPLEX DEVICE AND METHOD IN A NO.7 MODUL COMMON CHANNEL SIGNALING SYSTEM

摘要

The present invention relates to a redundant circuit device of a message transfer unit level 2 processing circuit pack and a method of implementing the same in a seventh module common line signaling method. 2 In the event of a failure of the processing circuit pack, continuous service is possible at the same level, and the message sequence number and the transmission message number of the message transfer unit level 2 processing circuit pack itself are detected and synchronized to synchronize with the active mode after the failover. It has the advantage that it can be applied to all systems using the 7th module common line signaling method by performing the switching procedure, ensuring the safety of the signal link by redundancy of the circuit pack, and processing the multiple signal links per circuit pack.