The effect of processing delay and QOS requirements in high speed networks

The authors examine the effects of call processing delay, propagation delay, the admission control function due to quality of service (QOS) requirements, and routing algorithms on the call setup time in future B-ISDN networks. Three routing schemes from circuit-switched networks and two parallel versions of these routing schemes are investigated under various network parameters and different forms of admission control. Analytic models for different routing algorithms are developed and were validated by simulation results. The results of the study indicate that call processing delay associated with the admission control function affects the network performance significantly while propagation delay does not affect the performance significantly