Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Authoritative and comprehensive

I obtained this book about 2 weeks back and I am deeply impressed by the concise and lucid treatment of the subject matter.The book covers the nuts and bolts of modern telecom networks. I am nor aware of any other book in the market that provides both theoretical and practical insights on network synchronization, SS 7 and ISDN. This is certainly a valuable contribution to the body of existing literature and should prove useful to both students and practising engineers. The author haslaid stress on standardization. Indeed in this era of liberalisation where telecom companies are looking for markets worldwide, an in-depth discussion on North-American, European and International standards in one place is immensely useful.In short, a unique text providing valuable information