cmAccPortPcpDEDecInPriority is a read-write PCP value on an access port that is decoded, on the receive side, to recover both the original priority and the drop eligibility of an arriving frame. An administrator configures this as the trigger PCP value in the decoding table used when frames arrive from the network side carrying encoded drop-eligibility information. For example, an access port receiving network-side frames tagged with a specific PCP value would use this object to identify that PCP value as one requiring decoding rather than being treated as a plain priority.