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Switching equipment adaptation for Russian public telephone network

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1 Author(s)
Goldstein, B.S. ; Leningrad Res. Inst. of Telecommun., Russia

This paper describes the adaptation and certification process for switching equipment to be used in the Russian public switched telephone network (PSTN). The first part of the paper illustrates the basic certification procedure and its essential steps. Each step, whether it is described in a natural language or formally in a specification language SDL, is an integral part of the certification process. The described approach improves standardization in the way that specialists at different manufacturers as well as Russian telecommunications engineers use the same methods, the same specification language, and the same test environments. Even the documents for different switching equipment have standardized features. In the second part of this paper, the specification methodology based on formal methods has been shown to work in the adaptation and certification process. It does reduce the number of software errors in the resulting version of adopted switching equipment, and it does improve quality and productivity significantly

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Selected Areas in Communications, IEEE Journal on  (Volume:12 ,  Issue: 7 )