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TlossRxLt

Table 1: Alarm/condition Details

Parameter	Description
Code	tlossRxLt
Description/Cause	Loss Below Low Threshold, Receive: The measured optical power loss in the received fiber is below the low threshold.
Entities Affected	Terminal amplifier line ports (see respective table below).
Default Severity	Minor
Service Affecting	Yes (true).
Alarm Clearing	See Clearing a TlossRxLt alarm.
Related Fault Hierarchy	See Terminal amplifier port fault hierarchy.

Table 2: Terminal Amplifier Line Ports

Entity Name		Fault Indicator
Entity Name	Module	Indicator	Status
line:<chassis>/<slot>/1/<portNum>	AMP1	Fault LED, Line port	On

Note: Follow all applicable safety requirements as described in the BTI7800 Series Hardware Overview and Installation Guide.

Retrieve statistics for the terminal amplifier line port to view the value of the Optical power loss in recv. direction counter:
show statistics current line:identifier
Note: For detailed AMP1 specifications, see the BTI7800 Series Hardware Overview and Installation Guide.
Check the upstream fiber connections, and ensure that the fiber is intact, thoroughly clean, and properly connected.
Check for alarms on the terminal amplifier line port:
- If the alarm has cleared, you have completed this procedure.
- If the alarm does not clear, contact your next level of support.