Abstract:

In a protocol life cycle different standard FDTs may be used. To avoid alteration in languages usually applied MSC has been investigated to determine whether it can be used to specify abstract test suites. The stressed point of this investigation is the possibility to define alternative behaviours in MSC. It is demonstrated that rules of composition/decomposition allow one to specify alternative behaviour, however, not by one, but by a set of message sequence charts. The relationship of these charts may be shown on a functional decomposition diagram suggested by the SDL Methodology Guidelines of Z.100 Recommendation.