Table 1: VoIP Protocol stack and comparison with the OSI model ……
VoIP technologies (based around the H.323 protocol) are being used in advanced

Voice over IP: what it is, why people want it, and where it is going Jane Dudman Contributing author: Gaynor Backhouse This report was peer reviewed by: Roger Bolam Content Delivery Manager UKERNA Arron Bowley Voice Technical Specialist UKERNA Raza Rizvi Head of Technical Services Opal solutio
High Wycombe JISC Technology and Standards Watch, September 2006 Voice over IP 1 CONTENTS Executive Summary 2 1. What is VoIP? 3 1.1 An introduction to VoIP 1.2 How VoIP works 1.2.1 The Basics 1.2.2 What you need to make a VoIP call 1.3 How VoIP is used, its background and history 1.4 The scope of this report 2. Technology, standards and challenges 7 2.1 Protocols 2.2 Codecs 2.3 Facto
to be co
idered when implementing VoIP 2.3.1 Voice Quality 2.3.2 Peer-to-peer networking (e.g. Skype) 2.3.3 Net Neutrality and packet shaping 2.3.4 Directories and addressing 3. Why people want it 17 3.1 Network convergence 3.2 Application convergence 3.2.1 VoIP and I
tant Messaging (IM) 3.2.2 VoIP and multimedia 3.2.3 VoIP and Web 3.3 Wireless VoIP 4. VoIP in Higher and Further Education 21

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