Communications software evolution is conceived as a programmable process, and accordingly supports two interacting data and process models. An object-oriented framework seems necessary to achieve this interaction. The...
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Communications software evolution is conceived as a programmable process, and accordingly supports two interacting data and process models. An object-oriented framework seems necessary to achieve this interaction. The authors summarizes the problem area under investigation, and gives an overview of PVC-M (a process-oriented version and configuration management system)-its objectives, main hypothesis and limitations.< >
The author describes MASCOT, (modular approach to software construction, operation and test) which was developed to formalise the production of large-scale, real-time embedded software systems. A major characteristic ...
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The author describes MASCOT, (modular approach to software construction, operation and test) which was developed to formalise the production of large-scale, real-time embedded software systems. A major characteristic of such systems is that they require a large number of people working on them, and so, require that the work is split up into a large number of separate modules to enable the task to proceed in parallel. In these software systems, one typically finds modularity in three forms: the decomposition of the task into sub-tasks; the coding of the sub-tasks into separately compilable modules; and the parallel execution of co-operating processes. It is a central feature of the MASCOT philosophy that these three forms are treated in a consistent, unified way. It splits the total task into a set of sub-tasks, codes each sub-task as a (set of) separately compilable module(s) and then executes each as a process. Thus, the decomposition is visible at each stage of the construction process, even down to the running code.< >
The author focuses on three areas: (1) the role of hypertext in providing designers and engineers and those working with formalisms with a presentation format and distribution medium which is more flexible and interac...
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The author focuses on three areas: (1) the role of hypertext in providing designers and engineers and those working with formalisms with a presentation format and distribution medium which is more flexible and interactive than those currently available; (2) hypertext as a tool for general management; and (3) hypertext as a model of how information in small chunks can be assembled, deployed, marketed and accounted for on a network.< >
The authors look at RTSASD (real time structured analysis and structured design) which is used in software engineering for system development. They concentrate on object-oriented analysis and why it is the preferred m...
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The authors look at RTSASD (real time structured analysis and structured design) which is used in software engineering for system development. They concentrate on object-oriented analysis and why it is the preferred method in the telecommunications industry.< >
The Research and development in Advanced Communications technologies in Europe (RACE) programme recognised that an improved programming infrastructure (PI) would be needed for integrated broadband communications (IBC)...
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The Research and development in Advanced Communications technologies in Europe (RACE) programme recognised that an improved programming infrastructure (PI) would be needed for integrated broadband communications (IBC). Within this context the specification and programming environment for communication software (SPECS) project defines advanced methods and tools to provide maximum automation and optimization of the software engineering of IBC software from requirements and specification through design, implementation, test, execution, maintenance and adaptation. The author outlines SPECS methods for telecommunications software which utilise formal description techniques (FDTs) as a key element of the engineering process.< >
The author explains the concept and purpose of ASN.1, which is in effect a data definition language, allowing protocol data unit definition without needing to specify transmission encoding. The high level language and...
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The author explains the concept and purpose of ASN.1, which is in effect a data definition language, allowing protocol data unit definition without needing to specify transmission encoding. The high level language and encoding are briefly described, along with their usage and current status.< >
SDL (specification description language) has been developed by CCITT to provide a language for unambiguous specification and description of the behaviour of telecommunications systems. The author gives a brief tutoria...
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SDL (specification description language) has been developed by CCITT to provide a language for unambiguous specification and description of the behaviour of telecommunications systems. The author gives a brief tutorial of SDL using an example of a road traffic control system. He covers the features of SDL that make it suitable for real-time systems and also gives a summary of the additional concepts that have been incorporated into the language, during the current study period, to cope with object-orientation. Although the language has been developed so that it may be used in both a physical representation (PR) and an equivalent graphical representation (GR) this tutorial only includes explanations in GR form.< >
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