Rapid response backup system for telecommunications networks

Details Rapid response backup system for telecommunications networks Rapid response backup system for telecommunications networks

1994-03-22

1997-08-26

Woo, Stella

Telephonic communications

Emergency or alarm communications

Central office responsive to emergency call or alarm

379 9315, H04M 1100

Patent

active

056617798

ABSTRACT:
An instant telecommunications network backup system includes several trunk diverter circuits and several responder circuits. Each trunk diverter circuit is installed proximate to an originating central office within the telecommunications network and monitors an outgoing trunk for faulty conditions. The trunk diverter circuit maintains a database that classifies each responder circuits as being in one of two classes: a maintain link class and a disabled class. One or more responder circuits are installed proximate to an emergency response facility. Whenever a faulty condition is detected, the trunk diverter circuit establishes an alternative telecommunications path through either a public switch telephone network or a mobile telephone switching network to one of the responder circuits in the maintain link class. The trunk diverter circuit and the responder circuit exchange communications with each other. When the trunk diverter circuit detects an incoming emergency telephone call, the trunk diverter circuit and responder circuit surrender the alternative path to the emergency telephone call to permit the telephone caller to access the emergency facility through the alternative path. If no alternative path has previously been established, then the trunk diverter circuit establishes an alternative communications path to any of the responder circuits, regardless of their class, and reroutes the emergency telephone call therethrough. Alternatively, the trunk diverter circuit is installed approximate to a remote switching office and monitors for an alarm signal from the remote switching office. The trunk diverter circuit establishes an alternative communications path to one of the responder circuits after detecting the alarm signal. Data identifying the location of the central office is supplied to the emergency response facility if specific data regarding the location of the emergency telephone call is unavailable.

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