34 Mbit/s Loss of input signal
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Alarm identifier E31cLOS
Information 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.
Alarm category Transmission
ASAP pdhPS
Alarm severity
(default setting)
Prompt
Reporting state
(default setting)
Reported
Local indications The red fault LED on the unit is flashing.
Cause 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.
Actions
• 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.
Alarm messages
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365-312-803R7.2
Issue 4, May 2007
Alcatel-Lucent - Proprietary
See notice on first page
1-39
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