This attribute indicates whether a LOF (Loss of Frame) alarm state has been entered. The LOF alarm state is entered when LOF defects (2 out of 5 framing bits in error ) have been detected for 3 seconds +/- 0.5 seconds. 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. This tributary goes into an operationalState of disabled until the LOF alarm state is cleared. Also, an RAI alarm is transmitted to the far end for the duration of the LOF alarm state The condition is cleared when framing has been achieved for 10 seconds +/- 0.5 seconds.