Traffic simulator for testing exchanges taking the subscriber-system

Abstract

With the aid of a traffic simulator telephone exchanges can be tested, the simulator imitating the traffic conditions in the exchange. To that end, the traffic simulator of the invention comprises, in addition to circuit means for simulating subscriber and line behavior, a program-controlled control arrangement connected thereto which generates random variables such as call distances, call durations and reaction periods, controls the test run and checks the reactions of the exchange, and also mixes the exchange-technical parameters. To obtain a realistic picture of the traffic conditions, a plurality of subscriber and line simulation are provided which are changeable in dependence on the reaction of the exchange. On the basis of the exchange reaction (signifying an event) a realistic picture of the external conditions of the exchange are obtained by linking such reactions with random variables and event instants.