9500 MXC User Manual
3DB 23063 ADAA - Rev 004 July 2007 Vol. VI-B-53
Recommended Actions
Check for other alarms.
Replace the DAC 155oM or its optical transceiver.
Additional Information
Indicates a remote degrade/defect in this section. K2[6..8] = "110" for 3 frames.
This alarm is returned to the transmitting-end (local) mux upon detection at the
remote-end mux of an incoming signal degrade/defect.
AIS In
Multiplexer section Alarm Indication Signal detected in. This is a major alarm.
Probable Cause
Signal source for this section is not present.
Recommended Actions
Check the signal source and connections at the input to the remote-end
multiplexer.
Check to see if the remote mux is in diagnostic mode (loopbacks set).
Signal Degrade BER
BER exceeded the configured threshold based on B2 of line overhead. This is a
major alarm.
Probable Cause
Cable integrity, optical transceiver.
Recommended Actions
Check for higher-level alarms, such as Signal Fail BER and LOS.
Check cable, connectors and if the probelm persists replace the optical
transceiver or mux card at the local end, followed by the remote end.
Additional Information
Alarm is raised when BER exceeds the configured threshold. Threshold is user
configurable for 10-6, 10-7, or 10-8. Based on B2 of line overhead.
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