This integer sets the Severely Errored Seconds count that, if exceeded within the current 15-minute Line-layer interval, triggers a statistical alarm, defaulting to 3 and applying identically to near-end and far-end. An admin cares because this low default threshold means even a handful of severely errored seconds in either direction within a quarter hour is treated as alarm-worthy at the Line layer. For example, three far-end SES events within one 15-minute window will trip this alarm at the default setting just as readily as three near-end SES events would.