This object indicates the current defect status of the OTU layer on an OTN interface. noDefect(0): No defect. This bit will be set when none of the following defect bits are set. los(1): LOS (Loss Of Signal). This bit will be set when LOS defect is present. lof(2): LOF (Loss Of Frame). This bit will be set when LOF defect is present. lom(3): LOM (Loss Of Multiframe). This bit will be set when LOM defect is present. bdi(4): BDI (Backward Defect Indication). This bit will be set when BDI defect is present. tim(5): TIM (Trace Identifier Mismatch). This bit will be set when TIM defect is present. ais(6): AIS (Alarm Indication Signal). This bit will be set when AIS defect is present. fecMismatch(7): FecMismatch (Forward Error Correction Mismatch ). This bit will be set when FECMISMATCH defect is present. fecUncorrectedWord(8): fecUncorrectedWord (Forward Error Correction Uncorrected Word). This bit will be set when at least one Uncorrected Word is detected.