Nortel Meridian Meridian 1 Maintenance Manual page 139

Enable filter
This command turns on filtering of messages. Before entering this
command, use the set filter command to specify which message types
should be filtered out.
Command format:
mlusr> enable filter association_id
Example:
To enable filtering for association_id 1:
mlusr> enable filter 1
Enable filter successful
mlusr>
Disable filter
This command turns off filtering for a specified association ID. The list of
messages set for filtering is still intact, should you reenable filtering.
Command format:
mlusr> disable filter association_id
Example:
To disable filtering for messages set for association_id 1:
mlusr> disable filter 1
Disable filter successful
mlusr>
Meridian Link Release 5C/CCR Release 3C Diagnostic and Maintenance Guide
Chapter 3: Link maintenance commands 127