Persistent. The significand of the Errored Seconds Ratio (ESR)
threshold, which is calculated by:
nbsOtnpmThresholdsEsrSig x 10^nbsOtnpmThresholdsEsrExp
An ESR that meets or exceeds this threshold at the end of the
nbsOtnpmThresholdsInterval period triggers the nbsOtnpmTrapsEsr
event notification.
The reserved value 0 disables notifications for this event.