Table 1: Condition Details
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.
DOL optical channels (see respective table below).
Related Fault Hierarchy
Table 2: DOL Optical Channels (OCHs)
where channel is an alphanumeric string.
where n depends on the module and channel is an alphanumeric string.
Clearing an OchAis 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.
- Check for excessive loss on the receive span fiber, and, if required, ensure that all upstream fibers are thoroughly cleaned and correctly connected.
- Ensure that all upstream fibers are thoroughly clean and correctly connected.
- 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.