AT&T Communications ISDN Architecture
Marda L. Higdon, Judith Tama Page, Peter H. Stuntebeck · AT&T Technical Journal · 1986
As announced in June 1985, AT&T Communications will introduce its initial Integrated Services Digital Network (ISDN) in 1987. AT&T Communications ISDN will expand the level of interaction between AT&T's intelligent, digital network and customer premises equipment and, thus, provide major new capabilities for meeting customers' telecommunications needs. This article discusses the building blocks that underlie AT&T Communications ISDN and the customer needs that these capabilities address.