Proposed in this paper is the new technique of distributed telecommunication networks research. It is based on penetration of parameters, determined analytically, into simulated parameters and vice versa. Introduction of this principle has made analytical and simulation methods widely used. The results obtained allow to: consider the influence of equipment unreliability on transmission capacity; simulate the control of packets routing, ensuring the flat loading of outbound channels; create algorithms of routing methods information support, etc.  Present work is aimed toward the creation of advanced technique on the basis of analytical simulation method.  At the analysis of network operation, specific detail level is fixed, which can be described by elementary time unit. It is usually called simulated time unit.  Analytical simulation concept is based on the use of simulated time matching. That includes summarization of modulated parameters using analytical procedures, as well as parametric design of simulation models, etc. [1-3].  In the present work we have described the system of above-listed procedures. In order to take the influence of main channels unreliability into account, one should seek the function.