Alcatel-Lucent 1643 AMS Operation Manual page 59

Alarm messages
34 Mbit/s Loss of input signal
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Alarm identifier
Information
Alarm category
ASAP
Alarm severity
(default setting)
Reporting state
(default setting)
Local indications
Cause
Actions
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365-312-803R7.2
Issue 4, May 2007
E31cLOS
There is no incoming signal on the 34 Mbit/s tributary port. This is detected by
the absence of transitions in the signal, that is, only zeros are received.
Transmission
pdhPS
Prompt
Reported
The red fault LED on the unit is flashing.
Possible causes are:
•
Interconnecting cabling contacts have a problem.
•
Receiver fault in indicated unit.
•
Fault in the transmitting equipment (for example wrong configuration of the
output power level).
•
Discontinuity in the intermediate cabling.
•
Erroneous routing of intermediate cabling.
•
Check tributary connections between the indicated unit, the connecting
panel, and the DDF (Digital Distribution Frame).
•
Check the tributary receiver port of the indicated unit by looping the data at
the DDF.
•
Check the transmitting equipment, including the configuration of the output
power level.
•
Check intermediate cabling.
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