Table 1: Condition Details
Alarm Indication Signal, OMS: The local NE has received an OMS-AIS signal from the far-end NE, indicating that no signal is being transmitted upstream of (and toward) the local NE.
DOL optical multiplex sections (see respective table below).
Related Fault Hierarchy
Table 2: DOL Optical Multiplex Sections (OMSs)
ROADM2 or ILA
Fault LED, L1 port
where the range of n depends on the module.
Fault LED, C<n> port
Clearing an OmsAis Condition
Follow all applicable safety requirements as described in the BTI7800 Series Hardware Overview and Installation Guide.
- Check for and clear all alarms upstream of the local NE.
- Ensure that the far-end NE has at least one optical channel provisioned and cross-connected.
- Check for excessive loss on the receive span fiber, and, if required, ensure that all upstream fibers are intact, thoroughly clean, and correctly connected.
- Check for conditions on the DOL OMS.
If the condition clears, you have completed this procedure.
If the condition does not clear, contact your next level of support.