Optical transmission apparatus

Details Optical transmission apparatus Optical transmission apparatus

2011-08-23

2011-08-23

Pascal, Leslie (Department: 2613)

Optical communications

Fault recovery

Bypass inoperative element

C398S167500

Reexamination Certificate

active

08005357

ABSTRACT:
An optical transmission apparatus includes redundant line cards each installed with hardware and a CPU. The hardware obtains failure information on redundant lines including a working line and a protection line, and the CPU determines switching control of the redundant lines based on the obtained failure information. Further, the hardware switches the redundant lines based on switching control determined by the CPU, so as to transmit an SDH/SONET optical signal. In the apparatus, from or to hardware installed in each of the redundant line cards, the failure information obtained by the hardware is communicated to hardware installed in a neighboring line card.

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Japanese Office Action, English-language Translation mailed May 10, 2011 for corresponding Japanese Application No. 2007-069509.

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