H.323 Videoconference over Native ATM

  • António Grilo
  • Mário Nunes
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1629)


This document presents an architecture for native ATM videoconference based on H.323, which takes advantage of ATM QOS characteristics. The ATM addressing scheme is used, and the transport functions are performed by ATM related protocols. This architecture allows the definition of different QOS requirements for audio and video, using the RTP/RTCP mechanism to adapt media quality to the capabilities of the terminals. The audiovisual data distribution in a multipoint-to-multipoint videoconference is decentralised, and based on ATM point-to-multipoint connections without requiring an MCU. This architecture was the framework for the development of a prototype videoconference application, whose performance measurements are presented and discussed.


Loss Ratio Real Time Protocol Audiovisual Data Real Time Control Protocol Multipoint Control Unit 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • António Grilo
    • 1
  • Mário Nunes
    • 1
  1. 1.INESC, Switching and Terminal Equipment GroupLisboaPortugal

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