Although this object's own DESCRIPTION is empty, its name and Integer32 syntax under the CFM Global SLM group indicate it sets the default time interval between successive Synthetic Loss Measurement (SLM) test frames when a specific SLM test instance doesn't specify its own interval. An admin would use this to control how frequently synthetic loss-measurement probes are sent by default, trading off finer-grained loss visibility against additional control-plane and link overhead from more frequent probing. For example, a global default interval of 1000 (likely milliseconds, following the pattern of related SLM timing objects) would mean SLM tests probe once per second unless a given test instance overrides that value.