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Rating: 
Summary: Tools book, References book
Review: I wanted to realize that VOIP Gateway and Gatekeeper,Bandwidth,calculation design or system planning.
Rating: 
Summary: Disappointing
Review: In our opinion, this book is more useful as a reference tool than a practical guide. The authors obviously have a high opinion of themselves, and this shows through in their style of writing.Nevertheless, the book successfully documents the quantifiable aspects of the technology; rare in a VoIP book. Two chapters deal with voice coding issues in very great detail, and this alone makes the book a useful addition to a technical library.
Rating:
Summary: Disappointing
Review: In our opinion, this book is more useful as a reference tool than a practical guide. The authors obviously have a high opinion of themselves, and this shows through in their style of writing. Nevertheless, the book successfully documents the quantifiable aspects of the technology; rare in a VoIP book. Two chapters deal with voice coding issues in very great detail, and this alone makes the book a useful addition to a technical library.
Rating:
Summary: Not up-to-date information
Review: This book was published in 1998, and that should tell you plenty about what is covered in it. Doesn't cover much of the new protocols such as WRR, DSCP, MGCP, policing, NBAR etc. etc. Where on the other had it goes into great detail on vocoding and different packetized speech traffic models.
Rating: 
Summary: Be Prepared
Review: We all know it's just a matter of time before VoIP gets ramped up, so I was really pleased to see this book on the shelf. It's best to be prepared-that's what I say. This book will definitely give you a leg up.
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