Results in Using the New Version of the SDL-UML Profile

In the last two decades the Specification and Description Language (SDL) has been established in the telecommunication sector as a domainspecific modeling language. A disadvantage of SDL is the fact that only a small number of modeling tools for SDL is available. Another graphical modeling language is the Unified Modeling Language (UML) used for the model-based development of software systems. Due to the extensibility mechanisms of UML, this language is not only restricted to the software sector, but can also be aligned to other technical domains. In contrast to SDL, UML is supported by a large number of tools from different vendors. In order to make it possible to specify communication systems with UML, the International Telecommunication Union (ITU) has specified a UML profile for SDL. The first version of this profile was published in the year 1999 as recommendation Z.109. A completely revised version of this standard was prepublished in June 2007. This paper presents a first case study in applying the new standard version for modeling a communication system. Furthermore, advantages and open issues of the new standard version are also discussed.