Monitoring circuit for time-division switching network
AssigneeLe Materiel Telephonique Thomson-CSF
InventorsJean-Baptiste B. F. Bouvier d'Ivoire, Michel J. B. Cauhape, Jean-Paul Lager
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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.
Claims14
A check device for time-division switching networks establishing communication paths between incoming trunks and outgoing trunks, a processor being provided to produce correspondence data determining the relationship of an incoming trunk channel with an outgoing trunk channel, characterized by the fact that it possesses N check groups, a microprocessor connected to the processor via data queues and under the control of which the N check groups operate simultaneously, a synchronization and multiplexing circuit which connects each check group to all the incoming trunks, and a multiplexing circuit which connects each check group to those outgoing trunks assigned to this group.
An improved monitoring device for a time-division telecommunications network which establishes communication paths between incoming trunks and outgoing trunks, said device including processor for producing correspondence data determining the relationship of an incoming trunk channel with an outgoing trunk channel, wherein the improvement comprises:
- N monitoring groups connected to said incoming and outgoing trunks;
- a microprocessor connected to said processor via data queues, under the control of said micro processor said N monitoring groups operate simultaneously;
- a synchronization and multiplexing circuit for connecting each monitoring group to all of said incoming trunks;
- and,
- a multiplexing circuit for connecting each monitoring group to those outgoing trunks assigned to said group.
Dependencies are inferred from the claim text.