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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.