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Rating: 
Summary: No more secrets and confusion about H.323!
Review: If you are confused about H.323 and are looking for a book that explains this intricate, convoluted standard, then you are looking at the right book. As an individual who has been involved with the standard from the early days I am very happy that there is finally a book that completely covers the standard in a language that is understood by everyone. This is a wonderful book.
Rating:
Summary: Excellent introduction to H323 architecture.
Review: This book has definitely provided me a solid background in H323.
In addition, it is a very useful reference, for example, I was
able to follow the call setup and media setup packet flow of an IP phone captured via a protocol analyzer(ethereal), thanks to the very clear illustrations. This is definitely a must for network administrators/managers considering a multimedia network implementation.
Rating: 
Summary: Well-written book that clearly explains a complex subject
Review: This book provides a highly-technical in-depth look at H.323. Aside from reading a few whitepapers on the Internet, this book was my first real introduction to H.323. The subject itself is rather complicated to a new-comer, but this book provided a high level of detail without losing the reader. While it is no "for dummies" book, it is clearly written so the person with the right background (i.e. with a firm grasp on networking and TCP/IP) can pick it up and follow along. So why 4 stars and not 5? It realy has to do with the architectural graphics. In some of the information on the Internet ... , there are some really good architectural graphics that depict H.323. I think the book could be even better if the authors included such an approach.
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Summary: Good Book for advanced Users
Review: This book provides an indepth coverage of the H.323 protocol. This book is a very good choice for profesionals working in H.323 domain.
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Summary: Thus far, The Authority on H323
Review: This book stands head and shoulders above other h323 and voip books. I know, I have 3 others that are gathering dust on the bookshelf. But this one, I have dogeared, marked, highlighted significant number of pages. It has the most detailed examples, explanations and illustrations that offer real-world implementation of h.323, h.245, h.225 and rtp, codecs, and other associated topics involved in voip. This is a must have, the other books are, well, junk.
Rating:
Summary: Thus far, The Authority on H323
Review: This book stands head and shoulders above other h323 and voip books. I know, I have 3 others that are gathering dust on the bookshelf. But this one, I have dogeared, marked, highlighted significant number of pages. It has the most detailed examples, explanations and illustrations that offer real-world implementation of h.323, h.245, h.225 and rtp, codecs, and other associated topics involved in voip. This is a must have, the other books are, well, junk.
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Summary: Much Needed
Review: This is a treasure of H.323, VOIP information! Excellent protocol information. This is no paper weight, gathering dust! I use the book and I'm glad to have it on my shelf.
Rating:
Summary: Much Needed
Review: This is a treasure of H.323, VOIP information! Excellent protocol information. This is no paper weight, gathering dust! I use the book and I'm glad to have it on my shelf.
Rating:
Summary: Best H.323 book on the market
Review: This is by far the most comprehensive book on the market. I agree with the previous review, IP Telephony with H.323 is for advanced uses and a great reference guide as well. I highly recommend it if you want a thorough understand H.323 and IP Telephony, however, if you wish to learn about a particular subject, for example QoS or MPLS, this book will not provide enough detailed information (check out Cisco Press).Must buy!
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Summary: Book is great - e-book is a hassle
Review: We are in the middle of a project that uses H.323. Everyone in the group likes the book. We bought a couple of hardcopies. I decided to try the electronic version, mainly because I could immediately have access to it. It was a mistake. First, it required me to update my Acrobat Reader to 6.0 (AR6). Then, to read the book I had to register/activate AR6. Two problems right here: as far as I could tell, you can only register AR6 if you have a .Net Passport. If you don't, tough luck. Go to MSN and get one. I happen to have one (from my Hotmail account), so I thought "no big deal." It turned out to be a big deal. After you enter your Passport login/account, it asks for more personal information (name, email, etc.). I don't like to give out this information unless I have to. Reading a book is not a good reason IMHO. After all that I decided to cancel the AR6 registration and to return the book. You cannot return the e-book (or I could not find a way to return it). I'm sure Amazon states that clearly, but I probably missed it in my rush to get the copy. I would gladly recommend the hardcopy, but go for the e-book only if you don't mind all the hoops.
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