Alcatel-Lucent 9500 MXC User Manual page 778

PMC OHT Access Failure
Probable Cause
Recommended Actions
Bus Trib z Loop-Back Enabled
Probable Cause
Recommended Actions
Ring Manual Lock
Probable Cause
Recommended Actions
RDI In
Probable Cause
Vol. VI-B-52
No communications with the overhead processor. This is a critical alarm.
Equipment malfunction.
Withdraw the DAC 155oM, pause, then reinsert.
Replace the DAC 155oM.
Loop-back has been applied to tributary z. This is a warning alarm.
A loopback has been established on a trib using commands in the CT
System/Controls screen.
To remove the alarm, deselect the loopback.
Ring manual lock is active. This is a warning alarm.
A ring lock has been established using commands in the CT
System/Controls screen.
To remove the alarm, deselect the lock(s).
Remote degrade/defect indication in this section. This is a major alarm.
Problem with the transmitted signal.
Alcatel-Lucent