Providing an accessible tutorial on telecommunications and network technologies, this text emphasizes the important relationship between voice and data. This second edition has been substantially updated to reflect the latest cellular and mobile technologies, including OFDM, IPv6, WCDMA, SD-CDMA, 4G, WiMAX, QoS, MPLS, unified messaging, IP telephony, and residential convergence (smart home technology). It also features new chapters on network management and security, as well as digital media. The text covers a wide range of topics, from circuit switching and packet switching technologies to wireless and video technologies. Based on an actual course, the book provides an instructor’s manual with PowerPoint® slides, problems, and a detailed syllabus for qualifying instructors.