to the many people I spoke with that preferred to not have their names used. I appreciate the information each of you shared. Most importantly, thank you to my husband Bob Dodd who read everything I wrote multiple times and provided common sense advice on how to improve sections to clarify important concepts. www.TechnicalPDF.com About the Author Photo courtesy of Annabel Z. Dodd Annabel Z. Dodd is on the faculty at Northeastern University' School of Professional Studies, where she teaches courses on data networks in the Master' Degree Program in Informatics. In addition to her university teaching, Annabel presents seminars to organizations worldwide. Her webinar on LTE Essentials for USTelecom attracted over 900 people. Annabel has been an adjunct professor in the Master of Science in Technology Management program at the State University of New York at Stony Brook, where she taught in a joint program with The Institute of Industrial Policy Studies, Seoul, South Korea. In addition, the Fundación Innovación Bankinter selected her to participate in their Future Trends Forum in Madrid in 2004, 2005, and 2007. Formerly in marketing at New England Telephone (now Verizon Communications) and Telecommunications Manager at Dennison Manufacturing Company (now Avery Dennison), Dodd was honored by the Massachusetts Network Communications Council as Professor of the Year. The Essential Guide to Telecommunications has been translated into nine languages since its first edition, which was published in 1997. www.TechnicalPDF.com Part I. Fundamentals, Data Centers, and IP PBXs Chapter 1 Computing and Enabling Technologies Chapter 2 Data Centers and LANs, Storage, and IP Private Branch Exchanges www.TechnicalPDF.com 1. Computing and Enabling Technologies In this chapter: Fiber-Optic and Copper Cabling Chips-Building Blocks of the Digital Age Packetized Data Deep Packet Inspection: Monitoring, Prioritizing, and Censoring Traffic Compression Increasing Network Capacity via Multiplexing Using Protocols to Establish a Common Set of Ru