Written in a clear, straightforward style, this edition now features entirely new chapters on national ISDN; broadband and Fast Packet services; Frame Relay call control signaling; Frame Relay applications, products, and services; ATM call control signaling; ATM applications, products, and services; and Internet access and ISDN. You'll also find greatly expanded material on AIN (Advanced Intelligent Network); ISDN applications, products, and services; and fast packet technologies, including Frame Relay, Asynchronous Transfer Mode, and Switched Multimegabit Data Service. Abundantly illustrated, this surefire reference tool contains an extensive glossary, and many references, as well as appendices with acronyms, standards, DSS messages, information elements, and sources of additional information.