ITU-T Z.101-2011 (Pre-Published) Specification and Description Language: Basic SDL-2010

pdf标准 ITU-T Z.101-2011 (Pre-Published) Specification and Description Language: Basic SDL-2010

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I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU U n i o n Z.101 (12/2011) SERIES Z: LANGUAGES AND GENERAL SOFTWARE ASPECTS FOR TELECOMMUNICATION SYSTEMS Formal description techniques (FDT) – Specification and Description Language (SDL) Specification and Description Language – Basic SDL-2010 Recommendation ITU-T Z.101 ITU-T Z-SERIES RECOMMENDATIONS LANGUAGES AND GENERAL SOFTWARE ASPECTS FOR TELECOMMUNICATION SYSTEMS FORMAL DESCRIPTION TECHNIQUES (FDT) Specification and Description Language (SDL) Application of formal description techniques Message Sequence Chart (MSC) User Requirements Notation (URN) Testing and Test Control Notation (TTCN) PROGRAMMING LANGUAGES CHILL: The ITU-T high level language MAN-MACHINE LANGUAGE General principles Basic syntax and dialogue procedures Extended MML for visual display terminals Specification of the man-machine interface Data-oriented human-machine interfaces Human-machine interfaces for the management of telecommunications networks QUALITY Quality of telecommunication software Quality aspects of protocol-related Recommendations METHODS Methods for validation and testing MIDDLEWARE Processing environment architectures For further details, please refer to the list of ITU-T Recommendations. Z.100–Z.109 Z.110–Z.119 Z.120–Z.129 Z.150–Z.159 Z.160–Z.179 Z.200–Z.209 Z.300–Z.309 Z.310–Z.319 Z.320–Z.329 Z.330–Z.349 Z.350–Z.359 Z.360–Z.379 Z.400–Z.409 Z.450–Z.459 Z.500–Z.519 Z.600–Z.609 Recommendation ITU-T Z.101 Specification and Description Language – Basic SDL-2010 Summary Scope/Objective Recommendation ITU-T Z.101 defines the basic features of the Specification and Description Language. Together with Recommendations ITU-T Z.100, ITU-T Z.102, ITU-T Z.103, ITU-T Z.104, ITU-T Z.105 and ITU-T Z.106, this Recommendation is part of a reference manual for the language. The language defined in this document covers the essential features of the language, which is further defined in other Recommendations in the ITU-T Z.100 series. Coverage The Specification and Description Language has concepts for behaviour, data description and (particularly for larger systems) structuring. The basis of behaviour description is extended finite state machines communicating by messages. Data description is based on data types for values and objects. The basis for structuring is hierarchical decomposition and type hierarchies. A distinctive feature of the Specification and Description Language is the graphical representation. This Recommendation covers the main features of the language such as agent (block, process) type diagrams, agent diagrams for structures with channels, diagrams for extended finite state machines and the associated semantics for these basic features. The concrete grammar given is the graphical representation. The alternative textual programming representation is given in Recommendation ITU-T Z.106. The concrete grammar in this Recommendation gives a canonical syntax, which is extended in Recommendation ITU-T Z.103 to a syntax that is easier to use. The basic part of the language given in this Recommendation does not include the details of expressions, data definitions and action language, which is defined in Recommendation ITU-T Z.104. The features of the language defined in Recommendation ITU-T Z.102 make the language more comprehensive. Applications The Specification and Description Language is applicable within standard bodies and industry. The main application areas for which The Specification and Description Language has been designed are stated in ITU-T Z.100, but the language is generally suitable for describing reactive systems. The range of application is from requirement description to implementation. The features of the language defined in ITU-T Z.101 allow basic models to be defined and provide a basis for other features defined in other Recommendations in the ITU-T Z.100 series. History Edition Recommendation 1.0 ITU-T Z.101 Approval Study Group 2011-12-22 17 Rec. ITU-T Z.101 (12/2011) i FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by t

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