Table 39: ET Interface Alarms and Defects (continued)
Link StatusDescriptionAlarmCategory
AlarmAlarm indication signal or all ones signalOTU-AISOTN OTU
AlarmBackward defect identificationOTU-BDI
WarningIncoming alignment errorOTU-IAE
WarningDestination access point identifier (DAPI), source
access point identifier (SAPI), or both mismatch
from expected to received
OTU-TTIM
WarningBackward incoming alignment errorOTU-BIAE
WarningOTU trail signal failOTU-TSF
WarningOTU server signal failOTU-SSF
AlarmAlarm indication signal or all one signalODU-AISOTN
ODU
AlarmOpen connection errorODU-OCI
AlarmODU lock triggers for path monitoring and TCM
levels 1 through 6
ODU-LCK
AlarmBackward defect indicationODU-BDI
WarningDAPI or SAPI mismatch from expected to receivedODU-TTIM
WarningIncoming alignment errorODU-IAE
WarningLoss of tandem connectionODU-LTC
WarningClient signal failureODU-CSF
WarningTrail signal failureODU-TSF
WarningServer signal failureODU-SSF
AlarmPayload type mismatchODU-PTIM
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