This read-only value reports the ABR ADTF (ACR Decrease Time Factor) for this SVC, the maximum time the source may wait between cell transmissions before its allowed cell rate (ACR) is reset down to the initial cell rate, protecting the network from a connection that goes idle and then bursts back at a stale, possibly-too-high rate. This effectively times out an idle connection's rate privileges so it must re-earn bandwidth gradually rather than resuming at its last negotiated peak. An engineer explaining a sudden throughput dip after a brief pause in an intermittent ABR application would point to cktAbrADTF having expired and reset the rate to ICR before traffic resumed.