A LOST defect occurs when a valid clock signal cannot be extracted from the configured timing source. This occurrence begins the alarm integration period. If this period elapses without the detection of a valid clock signal for a period of 125 to 250 microseconds, the LOST indicator activates. LRFI Line Remote Failure Indication. This occurrence begins the alarm integration period.
Major alarms affect several subscribers who connect to the reporting node.
See also critical alarm and minor alarm . Management Information Base See MIB . Mbps Megabits per second, a measurement of transmission speed. Minor alarms affect a single or small number of subscribers who connect to the reporting node. See also critical alarm and major alarm .