Modelling of systems with overflow multi-rate traffic and finite number of traffic sources

The paper proposes an analytical method for determining basic traffic characteristics of systems servicing multi-rate overflow traffic streams generated by a finite number of sources. The basis of the proposed analytical model is the Bretschneider method extended in this paper for systems with multi-rate traffic. Analytical results of blocking probability calculated using the presented methodology have been compared with the data obtained from the system simulation process.