Stochastic models for VoIP traffic and their applications
Arkadiusz Biernacki · Parallel and distributed computing and networks · 2007
The concept of multiplexing voice traffic sent over IP protocol (VoIP) on a common channel for efficient utilisation of the transmission link capacity is a great concern to network engineers. A VoIP gateway allocates a channel capacity that lies between the average and peak rates of traffic intensity and buffers the traffic during periods when demand exceeds channel capacity. In this work we propose two models which are able to approximate multiplexed VoIP traffic generated by a number of independent sources. The models are based on Markov processes and they differ in complexity and approximation accuracy. We apply these models to analysis of VoIP gateway performance using fluid flow modelling techniques. We give occupancy distribution of packets in a VoIP gateway buffer.