the Internet, IP, and security, he has the distinct talent of providing me with a heap of witty and humorous comments throughout his reviews-and that is priceless! Dr. Art St. George, manager of Advanced Technologies and professor at the University of New Mexico, is a most impressive technologist. He has far- reaching experience, from academia to research to administration, and lead- ership roles in the most pertinent of standards organizations and forums. As a tenured professor, he ensures that the materials are appropriate for all audiences, from undergrad to graduate, from technical to business, from academic to practitioner. How wonderful to have one person represent SO many interests! Robert Hudyma, professor at Ryerson University in Toronto, not only pro- vided substantial feedback to ensure technical clarity but also provided the insight needed to ensure that the book will be highly successful in building a new generation of telecom thinkers. He went the extra mile to help develop appropriate testing, lab, and homework supplements for the book. Dr. Chigurupati S. Rani, assistant professor, Department of Computer Infor- mation Systems at the Borough of Manhattan Community College, shares with me not just the practice of telecom education but also a particular view of the spirit. Rani spends a lot of time ensuring that her students are provided with the knowledge they will need to succeed, including creating additional testing and lab exercises to supplement the quizzes in the book. She provides me with additional insight into what is needed to conduct a successful telecom program. Brent D. Stewart, course director at Global Knowledge, is a fellow instructor who provided me with yet another way to look at the phrasing of technical details. These esteemed colleagues brought their own unique knowledge, background, ents, and even some humor (thank God!) to their reviews. Readers will benefit from this book's thorough review by some of the best minds in the industry, professionals charged with developing and del