ON OFF 1 - p on 1 - p off

In this paper we study the changes in individual source characteristics as traac ows through a network. The eeects of inter-source dependence caused by multiplexing at various network nodes are also investigated. Each traac source is modeled as a 2-state or multiple-state Markov modulated process. Extensive simulations have been performed for homogeneous and heterogeneous traac environments. Various network conngurations have also been considered. We have identiied the factors and parameters which have dominant eeects on source distortions and inter-source cross-correlations. We also discuss the implications of our ndings on the feasibility of decomposing the analysis of an ATM network into a set of separate nodal analyses.