This sets, in non-volatile memory, the elapsed time after letting a station into the ring after which it's considered OK (used together with the ChkRingIns check). Valid range is 1500 to 4000 (milliseconds); factory default is 3000. Setting this object stores the new value for the next reset, but does not change the currently-effective fibTmuFunctChkRingPerRun value until the system is actually reset. Admins tune this to control how long a newly-admitted station is watched before being trusted as stable, then schedule a reset to apply the change.