Vol. VI-B-58 Alcatel-Lucent
Additional Information
This alarm action is triggered by one or more of the listed events.
FAN Alarms
Fan Failure (FAN)
FAN plug-in alarm. This is a warning alarm.
Probable Cause
FAN plug-in malfunction, most likely a failure of one of the two axial fans.
Recommended Actions
Replace the FAN.
Additional Information
The two axial fans operate in protected mode. In the event the operational fan
fails, the standby fan will come on line. While both fans will run if the INU
temperature exceeds a preset threshold, normally just one will run, and operation
will be cycled between the two.
The FAN is field replaceable and can be hot-swapped; removal will not affect
traffic.
Informational Events
AIS Transmission Ceased
AIS transmission to customer connected equipment has ceased. The log entry
includes a reference to the affected tributary.
AIS Transmitted
AIS is being transmitted to customer connected equipment. The log entry
includes a reference to the affected tributary.
Alarm Output 1 Activated
Alarm output one has been activated. The note field indicates if the output circuit
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