Monitoring circuit for time-division switching network
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United States of America Patent
Stats
-
Nov 24, 1981
Grant Date -
N/A
app pub date -
Nov 20, 1979
filing date -
Nov 22, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A circuit for monitoring the operation of a time-division switching network, in particular, a circuit for checking the continuity of the switching network speech paths during actual communications. The circuit includes a plurality of monitoring Groups (I, II . . . N) which operate simultaneously under the control of a microprocessor. Each monitoring group is connected to all the incoming trunks via a synchronization and multiplexing circuit and to selected ones of the outgoing trunks, via a multiplexing circuit. The invention is applicable to telephone exchanges.
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