Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Want to know voice and data integration? Buy this book

This was one of the best technology books I have ever read. I would rank this book on the same level as the Doyle Routing and the Clark switching books. Explanations where clear and throughly laid out. After reading this book I am more confident in my knowledge of VOIP than ever before. This book will benefit all engineers involved in VOIP projects, not just specific to Cisco. I am currently working on a VOIP project for Lucent and the knowledge I obtained from this book has proved invaluable.