Chapter 3. Distributed Network Architecture

  1. David J. Wright

Published Online: 30 JUL 2004

DOI: 10.1002/0470858621.ch3

Voice over Packet Networks

Voice over Packet Networks

How to Cite

Wright, D. J. (2004) Distributed Network Architecture, in Voice over Packet Networks, John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/0470858621.ch3

Author Information

  1. University of Ottawa, Canada

Publication History

  1. Published Online: 30 JUL 2004

Book Series:

  1. Wiley Series on Communications Technology

Book Series Editors:

  1. Professor Barry Evans2 and
  2. Professor David Hutchison3

Series Editor Information

  1. 2

    University of Surrey, UK

  2. 3

    Lancaster University, UK

ISBN Information

Print ISBN: 9780471495161

Online ISBN: 9780470858622



  • softswitch;
  • call control server;
  • voice gateway;
  • signalling gateway;
  • gatekeeper;
  • feature server;
  • audio server;
  • multipoint controller;
  • billing server;
  • call establishment


This chapter covers the distributed network architecture, which is used to transport voice over a packet network, including the media and signaling gateways; and call control and other servers. Standardized protocols that can be used to communicate among these components over any packet technology are described including: MEGACO, Media Gateway Control Protocol, and SDP, Session Description Protocol. Signalling protocols that are specific to an individual transport technology are described in the chapter on that technology.