A.Synchronization method

B.Search method

C.Form method

D.Graphic method

A.False

B.True

A.OTUk is responsible for calculating BIP-8, writing to SM, GCCO, FAS, MAFS, etc.

B.ODUkP is responsible for calculating BIP-8, writing PM, GCC1/2 and other overheads.

C.OPUk performs client signal mapping, rate adjustment and rate adaptation in the transmission direction.

D.ODUkT calculates BIP-8 and writes to TCHi.

A.When the OCh path exists, you can directly create a client path. The NMS automatically creates an ODUk path.

B.The optical layer path and the electrical layer path are independent. It is not necessary to delete the electrical layer path when deleting the optical layer path.

C.Deactivation will delete the configuration of the U2000, which has no impact on the device side services.

D.The optical layer path must be deleted first when the electrical layer path is removed.

A.OTUK-TIM: The OTUK trace identifier is the TTI (Trail Trace Identifier) mismatch. This alarm is generated if the trace identifiers of the peer end and the local end do not match and the TIM detection is enabled during the control process. Compare the API (Access Point Identifiers) in the input signal with the desired API.

B.OTUk-LOM: Multi-frame alignment signal abnormal alarm, multi-frame positioning processing continues the multi-frame out-of-synchronization (o0M) state for 3ms, generating OTUelom alarm.

C.OTUKBDI: OTUk backwards indication alarm. When the signal detected by the SM segment fails, the value of the BDI byte is 1, and the alarm is reported.

D.OTUKAIS: OTUK alarm indication signal, the AIS signal is transmitted downstream, indicating that the upstream detected signal is invalid.