Optical ring transmission system using squelch method

Details Optical ring transmission system using squelch method Optical ring transmission system using squelch method

2005-05-17

2005-05-17

Sedighian, M. R. (Department: 2633)

Optical communications

Fault recovery

Bypass inoperative element

C398S004000, C398S005000, C398S059000, C370S222000

Reexamination Certificate

active

06895182

ABSTRACT:
An optical transmission technique for a ring transmission system that can transmit time-division-multiplexed optical signals in dual directions. An optical transmitting apparatus comprises a data link reading section, a topology creating section, a data link writing section, a squelch table creating section, a squelch table, an RIP table creating section, an RIP table, a node recognizing section, an east-side receiving unit, an east-side transmitting unit, a west-side transmitting unit, and a west-side receiving unit. When a transmission route is switched at plural positions, the squelch table and the RIP table are automatically created as soon as a crossconnect is set. With minimum setting, the ring transmission system can be normally operated without increasing the number of setting items, the squelch table can be created at a high speed using existing hardware, and an alarm can be automatically transmitted from a secondary node until each table is created.

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patent: 6122250 (2000-09-01), Taniguchi
patent: 6614754 (2003-09-01), Usuba et al.
patent: 9-93278 (1997-04-01), None
patent: 10-290249 (1998-10-01), None

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