The use of session control in DAVIC to provide interactive multimedia services

This paper begins with an introduction to DAVIC, with particular reference to its objectives and plans. It then considers the split of the functional model into the three roles - service consumer system, delivery system and service provider system. Once the vertical split of the functional model has been considered the horizontal split into S1-S4 levels is covered. The paper then expands on the concepts of session and connection control through the use of the S2, S3 and S4 levels in the setup, transfer and release of a user-to-network session and the end-to-end control of the user-to-user session. Finally, future plans/directions for DAVIC ave considered along with the adoption of Internet technologies within the DAVIC specifications.