In the OLT+ONU combined networking mode, OLT mainly plays the role of (), so the OLT equipment is required to have good performance and be able to provide sufficient bus bandwidth.

What are the advantages of ESC? (Multiple choice)

When an OTU board works with an OLP board, the optical power difference cannot be used as a trigger condition for intra-board 1+1 protection switching.

Which of the following reasons will not cause the network management to report a MUT_LOS alarm?

Two PD1 boards and one DMS board jointly implement the TPS protection function.