This read-only counter, in cells, tracks the number of valid CLP=0, high-priority, ATM cells in the egress direction of this channel before they reach the traffic management entity. An admin monitors this as a baseline count of high-priority traffic leaving the switch toward the destination on this channel, useful for comparing against the post-management egress transmit counter. For example, comparing this pre-management egress CLP=0 count against cwacsEgrXmtCLP0 lets the admin see whether any high-priority cells are unexpectedly being altered or dropped on the way out, which shouldn't normally happen for compliant cells.