Description: This attribute indicates whether a LOF (Loss of Frame) alarm state is entered. A LOF alarm state is entered when LOF defects are observed and accumulated for 2.5 seconds +/- 0.5 seconds or more. A LOF defect occurs when seven or more consecutive incorrect frame alignment patterns (4 multiframes) are received. If the LOF defects are intermittently occurring, the LOF 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 LOF alarm is cleared when framing has been achieved for 10 seconds +/- 0.5 seconds. The port goes into an operationalState of disabled for the duration of the LOF alarm condition. While the port is in the LOF alarm state, the node also transmits the far-end RAI defect indicator on the out-going JT2 line.