IP Telephony

Packet Based Multimedia Communications Systems

Olivier Hersent, David Gurle, Jean-Pierre Petit

456 pages, parution le 10/10/1999

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Résumé

Internet Telephony is now one of the most important and fastest growing
technologies on the Internet, providing a viable technical and economical
alternative to current telecommunication networks. Network providers and major
companies are thus investigating how this emerging technology can be
implemented, and at what cost and savings, in their organizations.
This
book provides a comprehensive practical overview of the technology behind
Internet Telephony, giving essential information to IT professionals who need to
understand the background and explore the issues involved in migrating the
existing telephony infrastructure to an IP based real time communication
service. Assuming a working knowledge of IP and ISDN networking, it addresses
the technical aspects of real-time applications over IP, with an in-depth
coverage of voice and video applications and protocols. Drawing on their
extensive research and practical development experience in VoIP from its
earliest stages, the authors give you access to all the relevant standards and
cutting-edge techniques in a single resource.
IP Telephony
is organized into three clearly structured sections, focusing on protocols,
voice technology and networks with a step-by-step approach. The protocols
section sets IP telephony in context and then covers H.323, SIP and MGCP in
detail, examining in turn their pros and cons, and using examples of particular
cases and scenarios. The voice technology section describes voice quality,
including the ETSI TIPHON approach, and voice coding, with summary comments on
the applicability to VoIP telephone gateways. The final section on networks
addresses Quality of Service (QoS) issues, explores dimensioning a VoIP network,
and introduces Multicast routing, including a perspective on security and MBONE
applications.

L'auteur - Olivier Hersent

Olivier Hersent est polytechnicien/ENST. Fondateur et directeur technique de NetCentrex (voix sur IP), puis CTO de Comverse, il est fondateur et dirigeant de Actility (M2M). Il est l'auteur de deux ouvrages de référence sur la voix sur IP.

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L'auteur - David Gurle

David Gurle, WW VP Collaboration Services Reuters

L'auteur - Jean-Pierre Petit

Jean-Pierre Petit dirige le Département Interactions Humaines (DIH/IPS) de France Telecom R&D.

Caractéristiques techniques

	PAPIER
Éditeur(s)	Addison Wesley
Auteur(s)	Olivier Hersent, David Gurle, Jean-Pierre Petit
Parution	10/10/1999
Nb. de pages	456
Format	17,3 x 24
Poids	861g
EAN13	9780201619102
ISBN13	978-0-201-61910-2