Abstract
This paper describes AT&T Network Systems broadband trials, their objectives, technologies, services, applications, and results for each. The five U S WEST COMPASS trial projects were conducted in the areas of narrowband Integrated Services Digital Network (ISDN), executive desktop videophone, switched digital signal level 1 (DS1), Switched Multimegabit Data Service (SMDS), and broadband ISDN (BISDN)/asynchronous transfer mode (ATM). We emphasize what has been learned from these trials about broadband technologies, services, and applications.
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