Computing and Information Systems - Research Publications

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End date: 1999 × Start date: 1994 × Type: Conference Paper × Subject: telecommunication services ×

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    Engineering telecommunication services with SDL
    SINNOTT, RICHARD ; Kolberg, Mario (Kluwer Academic, 1999)
    If formal techniques are to be more widely accepted then they should evolve as current software engineering approaches evolve. Current techniques in the development of distributed systems use interface definition languages (IDLs) as a basis for the underlying communication and also as an abstraction tool. Object-oriented technologies and the idea of engineering software through frameworks are also widely accepted approaches in developing software. In this paper we show how the formal specification language SDL and associated tool support have been applied in the TOSCA project to engineer telecommunication services using these current techniques.
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    Creating telecommunication services based on object-oriented frameworks and SDL
    SINNOTT, RICHARD ; Kolberg, Mario (IEEE Computer Society, 1999)
    This paper describes the tools and techniques being applied in the TINA Open Service Creation Architecture (TOSCA) project to develop object-oriented models of distributed telecommunication services in SDL. The paper also describes the way in which Tree and Tabular Combined Notation (TTCN) test cases are derived from these models and subsequently executed against the CORBA-based implementations of these services through a TTCN/CORBA gateway.
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    Engineering of interworking TINA-based telecommunication services
    Kolberg, Mario ; Sinnott, Richard O. ; Magill, Evan H. (IEEE Computer Society, 1999)
    This paper describes a Service Creation approach being developed in the EU funded ACTS TOSCA (TINA Open Service Creation Architecture) project to rapidly develop validated TINA based multimedia telecommunications services. The approach is based around object-oriented software frameworks in SDL which are specialized towards services by means of graphical paradigm tools. Further, in TOSCA, the need for service interworking across service provider domains via federation has been recognized in order to allow users to join service sessions offered by providers they are not customers of. However, service interworking may cause undesired behavior - the so called service interaction phenomenon. This paper focuses on this issue and the underlying technology of the service creation approach with emphasis on how service federation has been implemented.