books.google.com - "The only continuing source that helps users analyze, plan, design, evaluate, and manage integrated telecommunications networks, systems, and services, The Froehlich/Kent Encyclopedia of Telecommunications presents both basic and technologically advanced knowledge in the field. An ideal reference source...https://books.google.com/books/about/The_Froehlich_Kent_Encyclopedia_of_Telec.html?id=gaRBTHdUKmgC&utm_source=gb-gplus-shareThe Froehlich/Kent Encyclopedia of Telecommunications
