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

  • Authors:

  • R. D. Miles;P. W. Reece;L. Boon

  • Affiliations:

  • BT Laboratories, Martlesham Heath, Ipswich, Suffolk, England IP 5 3RE;BT Laboratories, Martlesham Heath, Ipswich, Suffolk, England IP 5 3RE;BT Laboratories, Martlesham Heath, Ipswich, Suffolk, England IP 5 3RE

  • Venue:
  • BT Technology Journal
  • Year:
  • 1998

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Abstract

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 set-up, 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 are considered, along with the adoption of Internet technologies within the DAVIC specifications.