Method of communicating management message and system for...

Details Method of communicating management message and system for... Method of communicating management message and system for...

H - Electricity

04

J

H04J 14/02 (2006.01) H04L 12/26 (2006.01)

Patent

CA 2327607

In the system for communicating a management message between nodes in a wavelength division multiplexing network 1, each of the nodes has a switching unit 101 for switching a transmission path of an optical channel signal carried by the network. The optical channel signal has a frame in compliance with the SDH/SONET standard that stipulates the Data Communication Channel Bytes D4-D12 in the Line Overhead Byte to be allocated for a management message. Each of the nodes includes a termination and generation means for terminating the bytes D4-D12 and extracts a management message from the bytes when each of the nodes receives the optical channel signal. The node judges an optical channel to carry said management message and incorporates new bytes of the same byte structure as bytes D4-D12 into the optical channel signal in place for the terminated bytes D4-D12. The new bytes are entered with a management message to be carried by the same channel as that of the optical channel signal of interest. The switching unit 101 switches the transmission path to route the optical channel signal together with the new bytes to the destination node.

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