This is a response to Mr. Kessler’s review. First, he needs to state that he has a biased interest in his review, that he used to work with Walter at Hill & Associates before he went to work for Juniper. Second, I was the reviewer for the first edition of the book and Walter had a lot of misconceptions about SONET in the original draft. So much so that my name is menitioned in the acknoweldgements in the first edition. Since I worked as a manager dealing with SONET at both AT&T as well as Cisco Systems,the book leaves a lot to be desired.

He is very verbose in his writing style and has never worked in the field to give the reader a real understanding of the issues that come with understanding SONET – both services and equipment. There are other books in the field that do a better job – Andy Reid is a good one from the technical side for example – but this author needs to change his writing style and tone it down for this book to be considered for readership seriously.

* Understand how optical fiber networks operate
* Trace the evolution of SONET/SDH and current high-speed optical networks
* Find out about the different classes of SONET/SDH equipment
* Discover the advantages of SONET and SDH ring architectures
* Learn DWDM techniques, including transmission, cross-connecting, switching, and more
* Become familiar with synchronous digital hierarchies both in North America and globally
* Use SONET/SDH to connect routers for data applications (IP over SONET)

Important topics include:

* Fiber optics overview
* Integrated SDH coverage
* WDM and DWDM
* Architecture and protocols
* Basic and advanced overhead and payload pointers
* Network equipment
* Customer and carrier advantages
* SONET/SDH rings
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