mscLpDS3RxRaiAlarm 1.3.6.1.4.1.562.36.2.1.12.5.16.1.4

This attribute displays whether a Remote Alarm Indication (RAI) alarm state has been entered. When not running the C-Bit Parity mode, the RAI alarm state is entered when the far-end SEF/AIS defect indicator has been observed and accumulated for a period of 2.5 seconds +/- 0.5 seconds on the incoming DS3 line. If the RAI defects are intermittently occurring, the RAI defect accumulator is decremented at a rate of 1/10 of the incrementing rate (alarm integration ratio of 1/10), with all measurements based on a 200 ms polling cycle. The DS3 component goes into an operational state of disabled until the RAI alarm condition is cleared. The condition is cleared when the far-end SEF/AIS defect indicator has not been detected for 10 seconds +/- 0.5 seconds. When running the C-Bit Parity mode, the RAI alarm state is entered upon detection of a far-end alarm over the Far-End Alarm and Control (FEAC) channel. The RAI alarm state is exited as soon as no more far-end alarm is detected on the FEAC channel. The far- end alarms that can be detected on the FEAC channel and that cause the RAI alarm state to be entered are: equipment failure alarm (service affecting), LOS alarm, LOF alarm, idle and AIS alarm. The rxRaiAlarm attribute is always set to off when the component has been locked and left offline.