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Objectives and Scope

Objectives and Scope. Rick Reed Society Chairman Chairman Study Group 17 Working Party 3 TSE Limited, UK. Role of the SDL Forum Society. Formed 1990 -incorporated 1995 SDL Publicity and info. Dissemination “Owns”: SDL Forum; SAM workshop Primary WWW site on SDL and MSC

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Objectives and Scope

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  1. Objectives and Scope Rick Reed Society Chairman Chairman Study Group 17 Working Party 3 TSE Limited, UK

  2. Role of the SDL Forum Society • Formed 1990 -incorporated 1995 • SDL Publicity and info. Dissemination • “Owns”: SDL Forum; SAM workshop • Primary WWW site on SDL and MSC • Email distribution and ftp • Participation in SDL standardization Serves members - the SDL community

  3. SDL & MSC: domain addressed SDL - Specification an Description Language MSC - Message Sequence Charts Both graphical (software) engineering notations. • Real Time Systems - discrete, reactive • Protocols and Services • Non telecommunications real time software • Formal high quality descriptions produced • Better - Quicker - Cheaper • Key features MSC: Messages, Instances, Events • Key features SDL: • Structure, Behaviour, Data, Interfaces, Types • Specification to Implementation - broad spectrum • Products: procurement, design, interface description • Standards - behaviour, conformance models ITU-T, ETSI, 3GPP, ECMA,

  4. Specification Ideas modelled by used to create Interpreted as Customer modelled by SDL & MSC Design Design Interpreted as used to produce Engineers transformed by Tools made as Software Implementation C++ etc. executes as Product Engineers Use of SDL & MSC

  5. SDL Graphics MSC Graphics msc convert system convert 1(1) B t [s] This system and block define Structure. B s c_in c_out signal s,t; t block B 1(1) s t P c_in c_out rin rout This process defines Behaviour. Very simple MSC & SDL model

  6. Forum Society and ITU-T • Society Members All users: telecom + others Researchers - Universities etc. Tool vendors Over 100 Individuals, SME, large organizations Publicity and Conferences User feedback Contribute to evolutions • ITU-T Members Nation administrations Larger telecom organizations Publication of Z.1xx standards De Jure status!! Promotion of standards • Joint issues Evolution of notations Quality of models (in standards +)

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