Alcatel-Lucent 9500 MXC User Manual page 761

Traffic Path Down
Probable Cause
Recommended Actions
Protection Cable Unplugged
Probable Cause
Recommended Actions
DAC Alarms
LIU Failure
Probable Cause
3DB 23063 ADAA - Rev 004 July 2007
The radio path is down. True for non-protected and for protected/diversity
configurations. This is a critical alarm.
Path loss or equipment malfunction.
1. Check for path loss.
• Traffic will be affected in both directions.
• A complete path loss will almost invariably be preceded by a low RSL and
BER alarms; check CT History and Event Browser screens and associated
event help.
2. Check equipment.
• An equipment related path loss should be signalled by alarms from the
ODU, RAC, or NCC.
• Such alarms may be at the local or remote end and may be one-way or
both-way traffic affecting.
Unable to detect the protection cable. This is a warning alarm.
Cable not present/disconnected.
Check/install the protection cable.
No communications with the LIU (line interface unit). This is a critical alarm.
Equipment malfunction.
9500 MXC User Manual
Vol. VI-B-35