| 摘要 |
PROBLEM TO BE SOLVED: To stably operate call processing for the call from a remote subscriber by a single processor by confirming the generation of a call by turning an active processor and a stand-by processor into a normal state, connecting the port of a subscriber's number and a voice channel number with the time switch of the stand-by processor and turning off the time switch after the completion of the call processing. SOLUTION: When a tone relevant data base, data base in each subscriber's type and parameter relevant data base for subscriber management are stored, the duplex process of an active processor 109 and a stand-by processor 110 is started. Initialization for duplexing the both processors 109 and 110 is operated, and a receiver waiting message is transmitted to the stand-by processor 110. The active processor 109 receives a recognition signal, and transmits each data base to the stand-by processor 110. When the recognition signal is received from the stand-by processor 110, the duplex processing is ended. Then, the stand-by processor 110 connects the pertinent port of the call with a time switch 206. |
