Traffic routing in a hybrid analog-digital network

This paper presents the results of a study carried out at CNET on the gradual digitalization of a large telecommunication network, SATINcomputes the traffic routing and the trunk groups in the hierarchical switched networks and minimizes its global cost. An experimental network comprising approximately 770 centres, where the percentage of digital switching centres is increased from 0 % up to 100 % is used. The paper points out the most important effects of digitalization and analyzes the grounds for these effects.