Persistent. The significand of the Severely Errored Seconds
Ratio (SESR) threshold, which is calculated by:
nbsOtnpmThresholdsSesrSig x 10^nbsOtnpmThresholdsSesrExp
A SESR that meets or exceeds this threshold at the end of the
nbsOtnpmThresholdsInterval period triggers the nbsOtnpmTrapsSesr
notification.
The reserved value 0 disables notifications for this event.