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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

    Module

    Indicator

    Status

    line:<chassis>/<slot>/1/<portNum>

    AMP1

    Fault LED, Line port

    On

    Clearing a TlossRxLt Alarm

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

    1. 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.

    2. Check the upstream fiber connections, and ensure that the fiber is intact, thoroughly clean, and properly connected.
    3. 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.

    Modified: 2017-04-25