Vol. VI-B-42 Alcatel-Lucent
The AUX Rx and Tx clock phase selection options are normally not critical for
correct operation. It is recommended that they are left as default.
AUX (n) Bus Facing Loopback
A bus-facing loopback exists on an auxiliary data port, where ‘n’ may be port 1,
2, or 3 for a Node, or 1 for a Terminal. This is a warning alarm.
Probable Cause
A bus-facing loopback has been set in the CT System Controls screen for the
alarmed auxiliary.
Recommended Actions
To remove the alarm, deselect the loopback.
AUX (n) Line Facing Loopback
A line-facing loopback exists on an auxiliary data port, where ‘n’ may be port 1,
2, or 3 for a Node, or 1 for a Terminal. This is a warning alarm.
Probable Cause
A line-facing loopback has been set in the CT System Controls screen for the
alarmed auxiliary.
Recommended Actions
To remove the alarm, deselect the loopback.
NPC Alarms
Clock Generator Failure (NPC)
Unable to program the clock generator. This is a critical alarm.
Probable Cause
Equipment malfunction.
Recommended Actions
1. Check for other alarms to determine how critical the alarm is. Depending on
the malfunction, the link may otherwise operate satisfactorily.
2. Replace the NPC.
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