Level-specific alarmsLevel-specific alarms
This screen contains detailed alarm and error information related to the OTN
layer. Status is indicated by the use of colored lamp icons.
If the ODUk is multiplexed, touch the relevant OTU/ODUk level button.
Alarms
OTL Alarms
LOF-OTLLOF-OTL: Loss of Frame of Optical channel Transport Lane
OOF-OTLOOF-OTL: Out of Frame of Optical channel Transport Lane
LOR-OTLLOR-OTL: Loss of Recovery of Optical channel Transport Lane
OOR-OTLOOR-OTL: Out of Recovery of Optical channel Transport Lane
ILA/OLAILA/OLA: Shows the lane alignment process.
Green indicates ILA (In-Lane Alignment).
Red indicates OLA (Out-Of-Lane Alignment).
OTU Alarms
LOSLOS: Loss of Signal.
OTU-AISOTU-AIS: Optical channel Transport Unit Alarm Indication Signal.
LOFLOF: Loss of Frame
OOFOOF: Out of Frame
LOMLOM: Loss of Multiframe
OOMOOM: Out of Multiframe
SM-TIMSM-TIM: Section Monitoring Trail trace Indicator Mismatch
SM-BIAESM-BIAE: Section Monitoring Backward Incoming Alignment Error
SM-BDISM-BDI: Section Monitoring Backward Defect Indicator
SM-IAESM-IAE: Section Monitoring Incoming Alignment Error
ODU Alarms
LOFLOMLOFLOM: Loss of Frame and Loss of Multiframe
ODU-AISODU-AIS: Optical channel Data Unit Alarm Indication Signal
ODU-LCKODU-LCK: Optical channel Data Unit Locked Signal
ODU-OCIODU-OCI: Optical channel Data Unit Open Connection Indication
PM-TIMPM-TIM: Path Monitoring Trail trace Indicator Mismatch
PM-BDIPM-BDI: Path Monitoring Backward Defect Indicator
PLMPLM: Payload Mismatch
FSFFSF: Forward Signal Fail
FSDFSD: Forward Signal Degrade
BSFBSF: Backward Signal Fail
BSDBSD: Backward Signal Degrade
MSIMMSIM: Multiple Structure Identifier Mismatch
CI-AISCI-AIS: Characteristic Information Alarm Indication Signal
CSFCSF: Client Signal Fail
LSSLSS: Link Status Signal
TCM Alarms
TIMTIM: Trace Indicator Mismatch
BIAEBIAE: Backward Incoming Alignment Error
BDIBDI: Backward Defect Indicator
IAEIAE: Incoming Alignment Error
LTCLTC: Loss of Tandem Connection
Errors
OTL Errors
FAS-OTLFAS-OTL: Frame Alignment Signal of Optical channel Transport Lane
MFAS-OTLMFAS-OTL: Multiframe Alignment Signal of Optical channel Transport Lane
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