The Irwin Handbook of Telecommunications, 3rd Edition provides the foundation you'll need to understand the North American telecommunications network. It illustrates how the telecom puzzle pieces function as a whole and the role of each individual piece. While providing comprehensive coverage, James Harry Green focuses on a wide scope of the major elements of telecommunications that can help you establish a base of information. Revised and thoroughly updated, this edition puts the telecommunications professional "in the know" about the latest industry technologies and their function in the grand scheme. With a complete list of North American area codes, country codes, telecommunications standards, and suppliers and their products, The Irwin Handbook of Telecommunications serves as an easy-to-reference guide for frequently used information.