Transmitting apparatus

Details Transmitting apparatus Transmitting apparatus

2006-05-09

2006-05-09

Patel, Ajit (Department: 2664)

Multiplex communications

Fault recovery

Bypass an inoperative station

C370S222000, C370S223000, C370S224000

Reexamination Certificate

active

07042836

ABSTRACT:
A transmitting apparatus for cross connecting and transmitting main signals which enter via ring-configured transmission lines to which working and protection channels have been assigned in first and second directions, and rescuing a main signal by looping back the main signal in the opposite direction using the protection channel when a transmission line fails. Storing non-rescue information which indicates whether each channel that is the object of rescue by loop-back is a non-rescue channel. Determining whether a failure for which rescue is impossible has occurred in each channel, which is the object of rescue, other than a non-rescue channel. On the basis of main-signal cross-connect information, interchanging a result of discrimination of each channel and inserting the interchanged result of discrimination in the main signal of the corresponding channel after cross connect.

REFERENCES:
patent: 5442620 (1995-08-01), Kremer
patent: 5537393 (1996-07-01), Shioda et al.
patent: 5757768 (1998-05-01), Goto et al.
patent: 6317426 (2001-11-01), Afanador et al.
patent: 6452931 (2002-09-01), Norman, Jr.
patent: 6456587 (2002-09-01), Taniguchi
patent: 10243008 (1998-09-01), None

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