For the relay type OTU, the alarms of all SM segments are terminated at the local station and are not transmitted downstream (except for OTUkLOF to insert ODUk_PI_AIS downstream). Other alarms continue to be transmitted to the downstream station and reported on the WDM side of the OTU (except for R_LOS to insert ODUK_PM_AIS to the downstream site).

Which of the following alarms will trigger the optical line protection switching? (Multiple choice)

The OTS path refers to the physical fiber connection between two adjacent OM/OD/OA on the main optical path.

Which of the following description is wrong about the content of the formula for calculating the maximum line rate (N=Ratc/((L+7+1+M)x8))?

The steps that must be performed when configuring the Ethernet private line service carried by the PW are as follows: (Multiple Choice)