Description: This attribute indicates whether a LOF (Loss of Frame) alarm state has been entered. The LOF alarm state is entered when LOF defects (for DS1: 2 out of 5 framing bits in error; for E1: 3 consecutive frame alignment patterns in error) have been detected for 3 seconds +/- 0.5 second . 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 port goes into an operational state of disabled until the LOF alarm state is cleared. The condition is cleared when framing has been achieved for 10 seconds +/- 0.5 second.