This object specifies the minimum severity threshold governing
the generation of cOpticalMonParameterStatus notifications.
For example, if the value of this object is
set to 'major', then the agent generates these notifications
if and only if the severity of the alarm being indicated is
'major' or 'critical'.
The values of 'notReported', and 'cleared' do not apply.
The value of '0' disables the generation of notifications.