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[Author] Hiroshi KAWASHIMA(1hit)

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  • Simplified Modeling for Call Control Scheme

    Hiroshi KAWASHIMA  

     
    INVITED PAPER

      Vol:
    E75-B No:10
      Page(s):
    923-930

    This paper surveys modeling techniques for telephone call control based on a Finite State Machine (FSM) concept, and studies model simplification techniques. First, the basic concept and fundamental issues of call control modeling are described. Then, based on the analysis of layered call control configuration, it is clarified that the call control machine decomposition within the two-party service control layer has the effect of reducing the apparent size of each mate's machine. Using this effect, guidelines for call control modeling are derived, by which multiple services can be modeled independently. Finally implementation techniques and a few examples of application will be presented.