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    OchAis

    Table 1: Condition Details

    Parameter

    Description

    Code

    ochAis

    Description

    Alarm Indication Signal (AIS), OCH: The local NE has received an OCH-AIS signal from the far-end NE, indicating that no signal is being transmitted upstream of (and toward) the local NE.

    Entities Affected

    DOL optical channels (see respective table below).

    Default Severity

    Not alarmed.

    Service Affecting

    Yes (true).

    Condition Clearing

    See Clearing an OchAis condition.

    Related Fault Hierarchy

    See DOL OCH fault hierarchy.

    Table 2: DOL Optical Channels (OCHs)

    Entity Name

     

    Fault Indicator

    Module

    Indicator

    Status

    och:<chassis>/<slot>/0L1/<channel>

    where channel is an alphanumeric string.

    ROADM2

    och:<chassis>/<slot>/0/C<n>/<channel>

    where n depends on the module and channel is an alphanumeric string.

    Clearing an OchAis Condition

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

    1. Check for and clear all alarms upstream of the local NE.
    2. Check for excessive loss on the receive span fiber, and, if required, ensure that all upstream fibers are thoroughly cleaned and correctly connected.
    3. Ensure that all upstream fibers are thoroughly clean and correctly connected.
    4. Check for conditions on the DOL optical channel.
      • If the condition clears, you have completed this procedure.
      • If the condition does not clear, contact your next level of support.

    Modified: 2017-10-24