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Implementation of a Prototype VoIP System

LIU Xicheng; LI Timothy J;   

  1. Centre for Communications Systems Research; University of Cambridge; UK Networking and Computing Systems Group; Motorola Semiconductor Products Sector;
  • Online:2000-09-10 Published:2000-09-10

VoIP (Voice over IP) is a rapidly growing area with great market potential. To promote it for both commercial and research purposes, a prototype VoIP system based on state-of-the-art Motorola communication techniques has been developed. It is a gateway system integrating a PBX and a VoIP module. All components that H.323 defines to support VoIP are implemented in the VoIP module, though in a simplified manner. As an embedded system, the system features real timeness and task distributiveness. A number of a…

Key words: packet scheduling,traffic scheduling,deterministic service,Quality-of-Service,round robin;

[1] Xiang Yangzhao, Liu Xicheng. An overview of VoIP technology and systems. Chinese Computer World weekly, January 25 1999, (4).

[2] http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/cis3600/voice/index.htm

[3] http://www.iptelephony.com

[4] ITU-T Recommendation H.323-Packet-Based Multimedia Communications Systems, 1997.
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