Telecommunications network

Details Telecommunications network Telecommunications network

2005-04-26

2005-04-26

Patel, Ajit (Department: 2664)

Multiplex communications

Fault recovery

Bypass an inoperative channel

C370S227000

Reexamination Certificate

active

06885636

ABSTRACT:
Telecommunications Network In a telecommunications network, a level of redundancy is often provided so that in the event of a circuit failure a back-up route may be used. A telecommunications network in which automatic switching of telecommunications traffic to back-up circuits is disclosed herein when faults are detected on a traffic carrying circuit. In particular, when dedicated private circuits develop faults, a network automatically switches traffic to a dedicated back-up circuit. Particular points on incoming and outgoing circuits of a switch are monitored. Faults at particular points result in autonomous switching of traffic to a dedicated back-up circuit. Communication is facilitated between switches by using predetermined signals on the dedicated back-up circuit.

REFERENCES:
patent: 5712847 (1998-01-01), Hata
patent: 5761245 (1998-06-01), Haukkavaara et al.
patent: 5870382 (1999-02-01), Tounai et al.
patent: 5901024 (1999-05-01), Deschaine et al.
patent: 5959972 (1999-09-01), Hamami

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