This is a read-write percentage, from 0 to 100, setting the high-threshold percentage of active DS0s relative to total DS0s that triggers a cvdcActiveDS0sHighNotification trap. An admin sets this to be proactively alerted when digital trunk utilization climbs toward capacity, before it actually runs out and starts blocking new calls. For example, an admin might set this threshold to 90 percent so they get an early warning trap well before a trunk group becomes fully saturated during a busy period.