CONTENTS

 1     Conference calling
        1.1     Definition
        1.2     Description
        1.3     Operational requirements
        1.4     Coding requirements
        1.5     Signalling requirements
        1.6     Interactions with other supplementary services
        1.7     Interactions with other networks
        1.8     Signalling flows
        1.9     Parameter values
       1.10     Dynamic description (SDLs)
 2     Three-Party Service
        2.1     Definition
        2.2     Description
        2.3     Operational requirements
        2.4     Coding requirements
        2.5     Signalling requirements
        2.6     Interactions with other supplementary services
        2.7     Interactions with other networks
        2.8     Signalling flows
        2.9     Parameter values
       2.10     Dynamic description
Appendix  I  (referred to in clause 2)  –  Diagrammatic description of coding requirements
        I.1     Invoke components
        I.2     Return result components
        I.3     Return error components
References