A visual programming for telecommunication services

In order to specify telecommunication services, this paper proposes a visual programming system which is intended for non-experts who usually have no knowledge of the professional aspects of network specifications. The services are described, from the user´s viewpoint, by a state transition rule whose method models a communication system as a black box. The system consists of a rule graphical editor and visual interpreter which help the designer to describe complicated telecommunication service specifications and to perform syntactic and semantic analysis of the described service specification. The system has been experimentally developed and evaluated by describing several existing service specifications