The invention provides a system and method of controlling timing of release of traffic for a communication switch. The traffic originates from at least one source, is directed to a common ingress point of the switch and is directed to a common egress point in the switch. The egress point has a maximum egress transmission rate. The traffic has at least one datastream. Each datastream has a requested transmission rate. The method comprises, for each datastream, establishing a maximum cell release rate such that a sum of each of the maximum cell release rate does not exceed the maximum egress transmission rate and utilizing the maximum cell release rate to govern release of local traffic in the datastream from the ingress point.