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 subracks does not support the configuration of packet board?

The E-Line service types supported by the MS-OTN packet device are: (Multiple Choice)

Before querying the error and optical power on the network management, you need to perform the () operation. Otherwise, you cannot query the corresponding teaching data.

The wave division system complement to chromatic dispersion mainly adopts the DCM compensation method. The following statements about DCM dispersion compensation, which is wrong?