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Title: This book is not for you unless you're a high-school student
Review: This book trys to use simple language to explain many complicated topics, and it fails to expain well. The author is knowledgable on telephone operations, but other than that, don't expect to learn anything from this book. I want to learn more about VOIP/ATM, H.323, CELP, but I feel very very disappointed after read through the whole book. If you're a design engineer, don't expect to learn angthing from it. If you're a high school student, or a household wife, this may be a good book.
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