As described for the vsiAvailableChnlWarnThreshold and
vsiAvailableChnlAlarmThreshold objects, events are generated
when these thresholds are crossed. This object defines a
set of unique values that are used with the
vsiLcnExhaustionNotice to convey information about the
context of a threshold crossing.
warning(1): the event qualifier for indicating
vsiAvailableChnlWarnThreshold violations.
alarm(2): the event qualifier for indicating
vsiAvailableChnlAlarmThreshold violations.
recovery(3): the event qualifier for indicating
vsiAvailableChnlWarnThreshold recovery.
normal(4): the initial value that indicates that no
thresholds have been crossed.