Existing methods of analysis of voice transmission
by packet switching were designed mainly with respect to a
Poisson stream of input packets, for which the probability of
an active packet on each input port of the router is a constant
value in time. This assumption is not always valid, since the
formation of speech packets during a dialogue is a nonstationary
process, in which case mathematical modeling
becomes an effective method of analysis, through which
necessary estimates of a network node being designed for
packet transmission of speech may be obtained. This paper
presents the result of analysis of mathematical models of
Markov chain based speech packet sources vis-à-vis the
peculiarities of telephone dialogue models. The derived models
can be employed in the design and development of methods of
statistical multiplexing of packet switching network nodes
