Abstract
How to transport the control and management information of optical networking is a major concern these days. We compare several means and arrive at a conclusion that OSC (optical supervisory channel) is a better choice. The content of OSC is given and OSC channel wavelength, bit rate and coding method are discussed. An OSC example of WDM metro network are illuminated, which demonstrates the processing operation of overheads in OSC, FDI behavior for three types of failure, and Self-management of OSC subsystem. To fulfill the demand of intelligent and distributed management of optical transport network, an OSC of OC-3 (155Mbps) channel bit rate may be needed in the near future.
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