Alcatel-Lucent 9500 MXC User Manual page 779

Recommended Actions
Additional Information
AIS In
Probable Cause
Recommended Actions
Signal Degrade BER
Probable Cause
Recommended Actions
Additional Information
3DB 23063 ADAA - Rev 004 July 2007
Check for other alarms.
Replace the DAC 155oM or its optical transceiver.
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.
Multiplexer section Alarm Indication Signal detected in. This is a major alarm.
Signal source for this section is not present.
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).
BER exceeded the configured threshold based on B2 of line overhead. This is a
major alarm.
Cable integrity, optical transceiver.
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.
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.
9500 MXC User Manual
Vol. VI-B-53