Title: Does author understand the subject?
Product review: This is about the worst book on any of the several subjects I care about. There is NO conceptual coherence in the treatment of the subject at hand - Voice over IP. It is simply an assorted treatment of various topics like ATM, FR, networking, vocoding without any logical thread running through them. I recently bought another book (IP Telephony by Goralski) which is a much better book on this subject. Avoid this one; save both your time and money.
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