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Verification of the Capability Exchange Signalling protocol

International Journal on Software Tools for Technology Transfer volume 9, pages 305–326 (2007)Cite this article

Abstract

The Capability Exchange Signalling (CES) protocol is one of the sub-protocols of recommendation H.245, “Control protocol for multimedia communication” issued by the International Telecommunication Union. In this paper, we model the CES protocol with Coloured Petri Nets and verify it using state space and language analyses. The results reveal that the CES protocol could fail when the sequence numbers used by the protocol wrap. To solve this problem, we propose a set of changes to the CES protocol. State space and language analyses are then applied to the revised protocol. Verification results suggest that the revised protocol satisfies the desired properties with the errors discovered being eliminated.

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Authors and Affiliations

  1. School of Computer and Information Science, University of South Australia, Adelaide, Australia

    Lin Liu

  2. Computer Systems Engineering Centre, School of Electrical and Information Engineering, University of South Australia, Mawson Lakes, SA, 5095, Australia

    Lin Liu & Jonathan Billington

Authors
  1. Lin Liu
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  2. Jonathan Billington
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Correspondence to Lin Liu.

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Liu, L., Billington, J. Verification of the Capability Exchange Signalling protocol. Int J Softw Tools Technol Transfer 9, 305–326 (2007). https://doi.org/10.1007/s10009-007-0037-y

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  • DOI: https://doi.org/10.1007/s10009-007-0037-y

Keywords

  • Protocol verification
  • Coloured Petri Nets
  • Capability Exchange Signalling protocol
  • State space analysis
  • Language equivalence