Loop-back detection using out-of-band signalling

Details Loop-back detection using out-of-band signalling Loop-back detection using out-of-band signalling

1995-03-30

1998-07-07

Chung, Phung M.

Excavating

371 201, 371 204, 370249, 370241, 370242, G06F 1100

Patent

active

057780030

ABSTRACT:
A method is described for detecting a loopback condition in a trunk. A predetermined bit pattern is inserted in an outgoing channel, and a corresponding incoming channel is continually monitored to detect the presence of the predetermined bit pattern. In this way, premature restoration of faulty circuits can be prevented.

REFERENCES:
patent: 4258434 (1981-03-01), Glowinski et al.
patent: 4777633 (1988-10-01), Fletcher et al.
patent: 4980887 (1990-12-01), Dively et al.
patent: 5343461 (1994-08-01), Barton et al.
patent: 5422876 (1995-06-01), Turudic

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