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E-raamat: Beyond VoIP Protocols: Understanding Voice Technology and Networking Techniques for IP Telephony

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(NetCentrex, France), (France Telecom), (Reuters, France)
  • Formaat: PDF+DRM
  • Ilmumisaeg: 05-Aug-2005
  • Kirjastus: John Wiley & Sons Inc
  • Keel: eng
  • ISBN-13: 9780470023631
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Beyond VoIP Protocols: Understanding Voice Technology and Networking Techniques for IP TelephonySuurem pilt
  • Formaat: PDF+DRM
  • Ilmumisaeg: 05-Aug-2005
  • Kirjastus: John Wiley & Sons Inc
  • Keel: eng
  • ISBN-13: 9780470023631
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Aimed at those responsible for creating effective, revenue-generating multimedia services, this companion volume to IP Telephony: Deploying Voice-over-IP Protocols identifies issues that arise in the deployment stage of implementing a VoIP network. It begins with an introduction to the basics of speech-coding and voice quality. Later chapters deal with topics relating to quality of service, network dimensioning, and IP multicast routing. The authors also explore the potential of multicast to turn an IP backbone into an optimized broadcast medium. Annotation ©2005 Book News, Inc., Portland, OR (booknews.com) In 1999-2000, VoIP (Voice-over-IP) telephony was one of the most successful buzzwords of the telecom bubble era. However, in 2001-2003, VoIP faced a very tough reality check. Now, manufacturers and service providers are drawing on what they have learnt from past experience in order to prepare to participate in the next major challenge faced by the telecommunications industry. This book offers a comprehensive overview of the issues to solve in order to deploy global revenue-generating effective multimedia services. Drawing on extensive research and practical deployment experience in VoIP, the authors provide essential advice for those seeking to design and implement a post-bubble VoIP network. Beyond VoIP Protocols: Understanding Voice Technology and Networking Techniques for IP Telephony Introduces the basics of speech coding and voice quality Demonstrates how quality of service may be built into the network and deals with dimensioning aspects, e.g. multipoint communications and how to model call seizures. Explores the potential of multicast to turn an IP backbone into an optimized broadcast medium Includes amply illustrated, state-of-the-art practical advice for formulating a complete deployment strategy A companion volume to IP Telephony: Deploying VoIP Protocols, this book takes the reader a stage deeper into how to prepare the network and exploit VoIP technology to its full potential.
Preface.
1 Introduction.
1.1 The rebirth of VoIP.
1.2 Why beyond VoIP protocols?
1.3 Scope of this book.
1.4 Intended audience.
1.5 Conclusion.
1.6 References.
2 Introduction to Speech-coding Techniques.
2.1 A primer on digital signal processing.
2.2 The basic tools of digital signal processing.
2.3 Overview of speech signals.
2.4 Advanced voice coder algorithms.
2.5 Waveform coders. ADPCM ITU-T G.726.
2.6 Hybrids and analysis by synthesis (ABS) speech coders.
2.7 Codebook-excited linear predictive (CELP) coders.
2.8 Quality of speech coders.
2.9 Conclusion on speech-coding techniques and their near future.
2.10 References.
2.11 Annexes.
3 Voice Quality.
3.1 Introduction.
3.2 Reference VoIP media path.
3.3 Echo in a telephone network.
3.4 Delay.
3.5 Acceptability of a phone call with echo and delay.
3.6 Conclusion.
3.7 Standards.
4 Quality of Service.
4.1 Introduction: What is QoS?
4.2 Describing a data stream.
4.3 Queuing techniques for QoS.
4.4 Signaling QoS requirements.
4.5 The CableLabs(r) PacketCableTM quality-of-service specification: DQoS.
4.6 Improving QoS in the best effort class.
4.7 Issues with slow links.
4.8 Conclusion.
4.9 References.
4.10 Packet size annex.
5 Network Dimensioning.
5.1 Simple compressed voice flow model.
5.2 Building a network dedicated to IP telephony.
5.3 Merging data communications and voice communications on one common IP backbone.
5.4 Multipoint communications.
5.5 Modeling call seizures.
5.6 Conclusion.
5.7 References.
6 IP Multicast Routing.
6.1 Introduction .
6.2 When to use multicast routing.
6.3 The multicast framework.
6.4 Controling scope in multicast applications.
6.5 Building the multicast delivery tree.
6.6 Multicast-routing protocols.
6.7 The mBone.
6.8 MULTICAST issues on non-broadcast media.
6.9 Conclusion.
6.10 References .
Index.


Olivier Hersent is Chairman and CTO of NetCentrex, France (Market Leader in VoIP deployments in Europe).

Jean-Pierre Petit is Head of Voice Technology at France Telecom.

David Gurle is Vice President of Multimedia Communications for Reuters and was previously Head of the Real-Time Communications (VoIP) group at Microsoft.
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