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Title: Read "a different" book before this one.
Review: Otherwise it might be somehow confusing. This book is a must for professionals as another reviewer stated but it is not very suitable as the first book on UMTS technologies. This book serves best as supplementary reading. For example new-beginner readers might get confused talkink about SIP at the first chapter before explaining W-CDMA and core-network layout. Anyway, this book contains wealth of information on UMTS technologies and warmly recommended for serious readers.
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