A method of controlling timing of release of traffic provided to a communication switch, said traffic originating from at least one source, being directed to a common ingress point of said communication switch and being directed to a common egress point in said communication switch, said egress point having a maximum egress transmission rate, said traffic comprising at least one datastream, said method comprising:
- for each said at least one datastream, establishing a maximum cell release rate such that a sum of each of said maximum cell release rate does not exceed said maximum egress transmission rate;
- and
- for each said at least one datastream, utilizing said maximum cell release rate to govern release of local traffic in said at least one datastream from said ingress point directed to said egress point.