Whether an SC2 board can concurrently process OSC signals and ESC signals

Processing for OSC signals is different from that for ESC signals.
An SC2 board concurrently processes two OSC signals of different directions, transits and exacts the system overhead, and sends the signals to the SCC board. OSC signals occupy a dedicated wavelength for transmitting monitoring and OAM information.
Transmission of ESC signals does not require dedicated monitoring units such as SC2. The ESC signals and service information are carried over the same wavelength, which does not require extra wavelength resources.

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