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AIS–L

 

Table 1: Condition Details

Parameter

Description

Code

ais-l

Description

Alarm Indication Signal–Line (AIS-L), SONET: The local interface has received an AIS-L signal from the NE at the far end of the fiber, indicating that no SONET signal is being transmitted upstream of (and toward) the local NE. See also Maintenance Signaling.

Entities Affected

SONET (OC192, WAN PHY OC192) interfaces (see table below).

Default Severity

Not alarmed.

Service Affecting

Yes (true).

Condition Clearing

See Clearing an AIS-L condition.

Related Fault Hierarchy

See OC192, WAN PHY over OC192 interface fault hierarchy.

Table 2: SONET (OC192, WAN PHY OC192) Interfaces

Entity Name

 

Fault Indicator

Module

Indicator

Status

oc192:<chassis>/<slot>/<subslot>/<port>

12x SFP+ BIC

wanoc192:<chassis>/<slot>/<subslot>/<port>

Clearing an AIS-L 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 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.