This Counter32 holds the upper 32 bits of the 64-bit count of cells that left this QBIN queue during a particular 15-minute interval, paired with cwacIntCellDeparts or the combined cwacHCIntCellDeparts. It ensures accurate throughput accounting for high-volume queues where departures alone could overflow a 32-bit counter within a 15-minute window. An admin computing precise throughput for a heavily trafficked queue would use this high-order word together with the low-order counter rather than relying on the 32-bit value alone.