The ISDN Primary Rate Interface Statistics object is a child of the ISDN Primary Rate Interface object. There is a single instance of the ISDN Primary Rate Interface Statistics object. The ISDN Primary Rate Interface Statistics object does not have any fields or pushbuttons, and you cannot configure or manage it. It exists simply as a way of grouping its 'Summary Period' child objects.
Counter type statistics record the total count of events (or time) during the particular time interval. High and Low type statistics record the highest or lowest value of the field reached during the particular time interval. Gauge type statistics show the average value of the field during the particular time interval, with a sampling rate of once every 5 minutes. Gauge statistics for the current and previous 5 minute time intervals are therefore a single snapshot value. Usage type statistics record the call usage in CCS (Centa Call Seconds): the total call time, in hundreds of seconds. 100 seconds = 1 CCS.