If no bit error test is performed on an optical channel for 10 minutes, the local end uses the SDH analyzer to connect to the client-side port on the OTU board, the client-side port on the opposite OTU board need to be self-looped by a fiber. In the case of self-loop, a fixed attenuator must be added.
When the grooming service level of the line board is ODUflex, which of the following protection schemes can be supported?
When different routes are used for client-side 1+1 protection, the working wavelength and protection wavelength cannot use the same wavelength.
Which of the following alarms trigger optical line protection switching?
Which of the following protection schemes require the APS protocol?
Dispersion compensation is not required for 40Gbit/s and 100 Gbit/s coherent systems because the dispersion tolerance of coherent boards is large. NG WDM products do not support hybrid transmission of non-coherent and coherent networks.
