It does not, however, provide much depth on any one technology. Most topics, such as ATM, SONET, etc., are covered in one to four pages each. It was significantly less than I was looking for, but I am still impressed with how well Ms. Dodd covered such a broad range of topics. Anyone with a high school education, no telecom experience, and the motivation to do it, could read and learn from this book.
I gave it four stars rather than five because ot does have some flaws. As noted in some other reviews, the author glosses over key data communications topics like routing, bridging, VoIP. For those readers who need depth in these topics, there are better sources (Try titles by Radia Perlman or Uyless Black, for example).
For readers who need a strong fundamental understanding of telecom technologies, regulations, and implementations, this is the best general primer out there.