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Formal Specification of Telephone Features

  • Conference paper
Book cover Z User Workshop, Cambridge 1994

Part of the book series: Workshops in Computing ((WORKSHOPS COMP.))

Abstract

A full formal specification of the external behavior of a realistic feature set for ISDN telephones is described. In addition to Plain Old Telephone Service, about ten of the most frequently used features of the 5ESS® switch are specified. The connections model deals with shared and multiple directory numbers and billing.

The specification employs a multiparadigm technique in which partial specifications in different languages are composed; this framework is briefly described. This paper focuses on the use of the Z notation to specify call processing and subscriber database aspects of telephone features and the way in which this description is composed with the telephone interface and digit analysis specification. The suitability of the approach for switching software development is discussed.

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Author information

Authors and Affiliations

  1. Software Production Research Department, AT&T Bell Laboratories, Naperville, Illinois, USA

    Peter Mataga

  2. Software Principles Research Department, AT&T Bell Laboratories, Murray Hill, New Jersey, USA

    Pamela Zave

Authors
  1. Peter Mataga
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  2. Pamela Zave
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Editor information

Editors and Affiliations

  1. Programming Research Group, Oxford University Computing Laboratory, Wolfson Buliding, Parks Road, OX1 3QD, Oxford, UK

    J. P. Bowen MA

  2. Praxis Systems plc, 20 Manvers Street, BA1 1PX, Bath, UK

    J. A. Hall MA, DPhil, CEng

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© 1994 British Computer Society

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Mataga, P., Zave, P. (1994). Formal Specification of Telephone Features. In: Bowen, J.P., Hall, J.A. (eds) Z User Workshop, Cambridge 1994. Workshops in Computing. Springer, London. https://doi.org/10.1007/978-1-4471-3452-7_3

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  • DOI: https://doi.org/10.1007/978-1-4471-3452-7_3

  • Publisher Name: Springer, London

  • Print ISBN: 978-3-540-19884-0

  • Online ISBN: 978-1-4471-3452-7

  • eBook Packages: Springer Book Archive

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