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    MS-AIS

    Table 1: Condition Details

    Parameter

    Description

    Code

    ms-ais

    Description/Cause

    Multiplex Section Alarm Indication Signal, SDH: The local port has received an MS-AIS signal from the NE at the far end of the fiber, indicating that no SDH signal is being transmitted upstream of (and toward) the local NE. (See also Maintenance Signaling.)

    Entities Affected

    SDH (STM64, WAN PHY STM64) interfaces (see respective table below).

    Default Severity

    Not alarmed.

    Service Affecting

    Yes (true).

    Condition Clearing

    See Clearing an MS-AIS condition.

    Related Fault Hierarchy

    See STM64, WAN PHY over STM64 interface fault hierarchy.

    Table 2: SDH (STM64, WAN PHY STM64) Interfaces

    Entity Name

     

    Fault Indicator

    Module

    Indicator

    Status

    stm64:<chassis>/<slot>/<subslot>/<port>

    12x SFP+ BIC

    wanstm64:<chassis>/<slot>/<subslot>/<port>

    Clearing an MS-AIS 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 on the upstream NE.
    2. Check for conditions on the local interface.
      • If the condition clears, you have completed this procedure.
      • If the condition does not clear, contact your next level of support.

    Modified: 2017-07-06