Publications

In 1986, the first ISDN features were introduced in the United States.

ISDN Centrex is a reality in the United States.

AT&T, together with Local Exchange Carriers (LECs) and key customers, has been testing the economy and practical utility of ISDN in a series of case studies across a range of industries.

A great deal has been published in the telecommunications literature about ISDN, but little of this has focused on the way that existing business and residence custom services will operate in an IS

AT&T Bell Laboratories has been involved in testing equipment for conformance with network and product interface specifications for more than five years.

The customer access available in today's Integrated Services Digital Network (ISDN) provides the means to integrate circuit switching and packet switching into the public switched network (PSN) via

The Integrated Services Digital Network (ISDN) has been designed to provide end-to-end digital connectivity.

This paper describes the implementation of Integrated Services Digital Network in AT&T's 5ESS(TM) Switch.

This talk presents the status of the standards activities, both at the international and national level, on the ISDN physical layer interfaces.

TO characterize the end-to-end performance of AT&T's ISDN BRI services, a system called ISDN-ASPEN was developed.