PDF Ebook IP Telephony: Deploying Voice-over-IP Protocols, by Olivier Hersent, Jean-Pierre Petit, David Gurle
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IP Telephony: Deploying Voice-over-IP Protocols, by Olivier Hersent, Jean-Pierre Petit, David Gurle
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IP (internet protocol) Telephony, enabled by softswitches, is going to usher in a new era in telecommunications. By putting voice and data over one IP network, operators can enjoy lower costs and create new, revenue-generating "multimedia" services.
This valuable reference offers a comprehensive overview of the technology behind IP telephony and offers essential information to network engineers, designers and managers who need to understand the protocols and explore the issues involved in migrating the existing telephony infrastructure to an IP-based real time communication service.
Drawing on extensive research and practical development experience in VoIP from its earliest stages, the authors give access to all the relevant standards and cutting-edge techniques in a single resource.
IP Telephony: Deploying Voice-over-IP Protocols:
- Assumes a working knowledge of IP and networking and addresses the technical aspects of real-time communication over IP.
- Presents a high level overview of packet media transport technologies, covering all the major VoIP protocols – SIP, H323 and MGCP
- Details specific strategies to design services for public networks where endpoints cannot be trusted and can be behind firewalls.
- Explores the problems that may arise from incomplete protocol implementations, or architectures optimized for private networks which fail in a public environment.
This amply illustrated, state-of-the art reference tool will be an invaluable resource for all those involved in the practical deployment of VoIP technology.
- Sales Rank: #4742454 in Books
- Published on: 2005-03-11
- Ingredients: Example Ingredients
- Original language: English
- Number of items: 1
- Dimensions: 9.67" h x 1.06" w x 6.89" l, 1.85 pounds
- Binding: Hardcover
- 416 pages
From the Back Cover
IP (internet protocol) Telephony, enabled by softswitches, is going to usher in a new era in telecommunications. By putting voice and data over one IP network, operators can enjoy lower costs and create new, revenue-generating "multimedia" services.
This valuable reference offers a comprehensive overview of the technology behind IP telephony and offers essential information to network engineers, designers and managers who need to understand the protocols and explore the issues involved in migrating the existing telephony infrastructure to an IP-based real time communication service.
Drawing on extensive research and practical development experience in VoIP from its earliest stages, the authors give access to all the relevant standards and cutting-edge techniques in a single resource.
IP Telephony: Deploying Voice-over-IP Protocols:
- Assumes a working knowledge of IP and networking and addresses the technical aspects of real-time communication over IP.
- Presents a high level overview of packet media transport technologies, covering all the major VoIP protocols – SIP, H323 and MGCP
- Details specific strategies to design services for public networks where endpoints cannot be trusted and can be behind firewalls.
- Explores the problems that may arise from incomplete protocol implementations, or architectures optimized for private networks which fail in a public environment.
This amply illustrated, state-of-the art reference tool will be an invaluable resource for all those involved in the practical deployment of VoIP technology.
About the Author
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.
Most helpful customer reviews
6 of 6 people found the following review helpful.
meant for communications engineers
By W Boudville
Warning! This is a very technical book, that is directed at the communications engineer who wants a detailed explanation of VoIP. It describes the numerous VoIP standards, but in a much more meaningful way than the official standards documents.
H.323, SIP and MGCP are each given a chapter. These are the most prominent of the VoIP standards, and deserve your attention. The chapters explain the standards to enough depth to convey the main functionalities. Plus, you are now equipped with enough knowledge to actually read the standards documents if you so desire.
If you are wondering about H.248 and SS7, then be aware that the authors have deliberately refrained from covering these here. For various reasons - SS7 being seen as too far afield from VoIP.
8 of 9 people found the following review helpful.
Good text -- but missing important features
By Mark R. Lindsey
This is a well-written text; it compiles a lot of good information on important issues. I enjoy reading it, because there is a lot of info on things I don't understand. For example, it has an introductory description of how faxing works, then touches on how T.38 works with that approach.
There's also some information on what you'll usually see in equipment, and about movements afoot that aren't quite widespread as yet -- e.g., ENUM lookups for routing calls.
The author sprinkles in his opinions and technical/aesthetic tastes, however. While it's very informative, some sections read like opinion from a magazine like MacWorld. For example, the authors praise H.323 for its greatness, but criticize SIP for being as a bunch of vendor hacks.
But it's missing some key features -- like a useful index (it has one of those sparse six-page indexes for a 380-page book), or even a bibliography! The lack of a bibliography is particularly offensive. For example, the authors claim that "95% of VoIP minutes worldwide" are controlled with H.323, but provides no basis for that claim.
1 of 1 people found the following review helpful.
When do I get the sequel?
By Dorothy R. Epling
This book itself is pretty good. It is comprehensive in its distillation of the RFC's so I don't have to read them. My one complaint about the content of this book is my perception of their bias against SIP, although they still do a good job of fleshing it out. However, it is a little annoying that it seems like every other page, just when it starts to get good, they will refer you to the companion book. So my advice is, yeah, go ahead and purchase this book, but you might as well go ahead and buy the other one too.
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