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Title: Lacking a lot of detail
Review: This book simply does not have a lot of detailed information about DS1 or DS3. It's a fairly small book, less than 200 pages, but tries to cover T1, T3, and SONET. It presents a VERY high level look at DS1 and DS3 frames, not even close to what you'd need to really understand how it works, and it simply ignores certain aspects of the technology. It also has a certain amount of "filler" in the form of discussions of equipment which communicates via T1 or T3.Given this lack of detail, the book is extremely expensive.Rather than purchase this book, go to the ATIS web site and download the ANSI T1.107 specification, which documents the DS1 and DS3 frames. It's a bit hard to read, but it's better than this book.A good paper on DS1 and DS3 framing is available atmembers dot cox dot net slash michael dot henderson slash Papers slash Framing dot pdf
