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Title: Poorly organized; inaccuarate in places
Review: Russell's rambling style makes easy reading for beginners, but I found this book to be virtually useless as a technical resource; it's difficult to find the piece of information you're looking for because the text jumps from one topic to another according to the author's train of thought at the time. I have some experience with SS7 and had hoped this book would fill in the areas where I was weak, but I discovered that the book is actually incorrect in its explanation of some topics (e.g. Changeover) and so Russell can't be trusted - you'll end up reading the actual standards if you want an accurate description of SS7.
