ABSTRACT
Design engineering sets up the various features of a system which are used in a different world. Communication between these worlds takes place through the system itself. In this case, human factor science aims at establishing the link between designers and users at all steps; preparing the manufacturing of the system. The various types of know-how must be fitted to optimize the use of new technologies. In order to design an intelligent voiceactivated switchboard: STANDIA, one has to change man-man dialogue into manmachine dialogue.
