Chapter 3. Configuration3-26 MX2800 STS-1 User Manual 61200659L1-1STS-1 Active Alarm TrapsTrap If enabled, the unit issues a trap when...LOS (Loss of Signal)The controller card has lost the network receivesignal.LOF (Loss of Framing)The controller card detects a loss of framingfrom the network.LOMF (Loss of Multiframe)The controller card detects loss of H4multiframe from the network.AIS-L (Line Alarm Indication Signal)The controller card is receiving a line alarmindication signal. Line AIS defect is detected asa "111" pattern in bits 6, 7, and 8 of the K2 bytein five consecutive frames.AIS-P (Path Alarm Indication Signal)The controller card is receiving a path alarmindication signal. AIS-P is defined as all ones inbytes H1, H2, and H3 as well as all ones in theentire STS synchronous payload envelope.RFI-L (Line Remote Failure Indication)The controller card is receiving a line remotefailure indication. RFI-L is declared when theincoming line remote defect indication (RDI-L,"110" pattern in bits 6,7, and 8 of the K2 lineoverhead byte) last for 2.5 +/- 0.5 seconds.RFI-P (Path Remote Failure Indication)The controller card is receiving a path remotefailure indication. RFI-P is declared when theincoming path remote defect indication (RDI-P,"1" in bit 5 of the G1 path overhead byte for 5contiguous frames) last for 2.5 +/- 0.5 seconds.
