Special case of determining flow parameters of multi-service telecommunication network

The task of research of non-Poisson trafc obtained during the procedure of statistical characterization at the specifed rates of packets arrival is considered. In order to investigate the statistical characteristics of multimedia stream, multicast data transmission is considered, which implies that the server generates one data stream and sends it over the network to connected clients. The load rate of the total packet fow at each point in time depends on the software products serving the outgoing requests and the requests number ratio by taking into account these software products. Based on histograms of measurements, approximate functions of time interval distributions between packets and duration of packets, their approximating expressions are obtained in the form of sum of damped exponents satisfying the properties of distribution density function of random quantity. Values for the average packet delay time in the network and queue length are obtained using the spectral method of solving the Lindley integral equation for G/G/1 queuing system. The solution accuracy is determined by the approximation accuracy of the «heavy» tail distributions used.