Description: This attribute displays whether an Path Alarm Indication Signal (P- AIS) alarm state has been entered. An P-AIS alarm state is entered when P-AIS defects have been observed and accumulated for a period of 2.5 seconds +/- 0.5 seconds. The P-AIS defect is the occurrence of the P-AIS signal in three contiguous valid STS or STM frames (all one's in bytes H1 and H2). If the P-AIS defects are intermittently occurring, the P-AIS 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 Path component goes into an operational state of disabled until the P-AIS alarm condition is cleared. The condition is cleared after no P-AIS defect has been detected for 10 seconds +/- 0.5 seconds. The rxAisAlarm attribute is always set to off when the Path component has been locked and left offline by the operator or when the Path component has been suspended since the parent component has been locked.