Alcatel-Lucent 9500 MXC User Manual page 780

Signal Fail BER
Probable Cause
Recommended Actions
Additional Information
LOS
Probable Cause
Recommended Actions
Additional Information
LOF
Probable Cause
Recommended Actions
Vol. VI-B-54
BER exceeded the signal fail threshold (10
Cable integrity, optical transceiver.
Check other alarms for an indication of a cable failure, a remote-end mux
malfunction, or local-end transceiver failure.
Alarm is based on B2 of the line overhead.
Loss of Signal (LOS) alarm detected in the regenerator. This is a critical alarm.
A cable is disconnected or the pier equipment laser is off.
Check presence of other alarms to help determine if the problem is cable or
equipment based.
Check remote-end mux/regenerator operation.
Loss of signal is raised when the signal level drops below the threshold at which
a BER of 1 in 10-3 is predicted. Clears when two consecutive framing patterns
are received and no new LOS condition is detected.
Loss of Frame (LOF) alarm detected in the regenerator. This is a critical alarm.
Pier equipment malfunction.
Check presence of other alarms to help determine if the problem is cable or
equipment based.
-3
). This is a critical alarm.
Alcatel-Lucent