Abstract
This paper seeks to provide the analysis of a model of two overflow traffic components that originated from several Poisson traffics served by a common primary trunk group. Overflow parts of two of them are served in a secondary trunk group, but with changed and different serving intensities. The general solution of the system was obtained by generating function techniques, and call losses, time losses and traffic losses were defined based on state probability and solved numerically. In order to illustrate specific characteristics of the analyzed model, loss values were compared with the losses in a corresponding system with averaged serving intensity for which there is a much simpler explicit solution.
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