While searching for the optimal way to evaluate the
suggested future access network models, a hybrid model
of evaluation was defi ned. It consists of literal marks on
which the fuzzy logical model was applied, and numeric
marks which we rationalized. To this we were guided by
the very fact that the most of input parameters could
not be expressed by numerical values and that we did
not want the expenses of building a network to be set
up as a base. Th e application of the fuzzy model has its own specifi cities, which depend on many parameters,
just like it is shown in the PEST analysis. Th e PEST
analysis has also pointed at complexities of making a
decision about the choice of the future model.