This read-write value sets the number of measurement periods the switch uses when calculating this circuit's QoS parameters, such as the delay and delay-variation statistics reported by the accumulated CTD/CDV objects. A shorter interval count makes the QoS figures more reactive to recent conditions but noisier; a longer interval count smooths out transient spikes at the cost of responsiveness to real degradation. An engineer who finds cktAccumCTD swinging wildly between polls due to a too-short averaging window would increase cktQosIntPeriod to smooth the reported delay statistics over more samples.