This attribute displays whether a Loss Of Signal (LOS) alarm state has been entered. An LOS alarm state is entered when LOS defects have been observed and accumulated for a period of 2.5 seconds +/- 0.5 seconds. An LOS defect is detected at the DS3 line interface upon observing 175 +/- 75 continuous pulse positions with no pulses of either positive or negative polarity. If the LOS defects are intermittently occurring, the LOS 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 LOS alarm condition is cleared. The LOS alarm state is cleared after LOS defects have been absent for a period of 10 seconds +/- 0.5 seconds. The losAlarm attribute is always set to off when the component has been locked and left offline.