The gain of the OAU board is 23db, and 1% of the total output power of the OAU board is used for MON detection. The output optical power of the tested MON port is 8dbm, then the input optical power of the IN port of the OAU board is

When using dual-slot line group MSP ring, in which of the following situations are the multiplex section overhead K bytes in the pass-through state? (multiple choice)

Optical wavelength sharing protection OWSP is used to configure the ring-type network of distributed services, and realizes the protection of all the distributed services between all sites by occupying two different wavelengths.

What is the wrong description of the insertion loss technical indicators of each type of board of the OTN equipment? () (multiple choice)

In the network, clock equipment is usually used to ensure network synchronization, and different clock sources are selected according to the requirements of different clock accuracy. If you want to meet the clock accuracy of G.811, which clock source can you choose? (multiple choice)