Characterizing Superposition Arrival processes In Packet Multiplexers for Voice and Data

This paper analyzes a model of a multiplexer for packetized voice and data A key aspect of the analysis is the characterization of the packet-arrival process. The approach is based on the index of dispersion for intervals, which describes the cumulative correlations among successive interarrival times. 

The packet delays are described using approximations in the Queueing Network Analyzer (QNA) software package. With this technique, the super- position packet-arrival process is approximated by a renewal process partially characterized by two parameters, one describing the rate and the other the variability, where the variability parameter is a function fo the traffic intensity.