Products Covered By This Guide

The Integrated Services Digital Network (ISDN) is a collection of internationally accepted standards for defining interfaces and operation of digital switching equipment for the transmission of voice, data, and signaling. ISDN has the following characteristics:

• ISDN makes all transmission circuits end-to-end digital
• ISDN adopts a standard out-of-band signaling system
• ISDN brings significantly more bandwidth to the desktop

The GlobalCall software provides a consistent interface across Dialogic products interfaced to various ISDN and other networks (for example, T-1 ISDN, E-1 ISDN, E-1 CAS, T-1 robbed bit and analog). See the Release Catalog for your operating system for the Dialogic products that provide ISDN Primary Rate Interface (PRI) capabilities (see Chapter5, Protocols, for more on PRI). Dialogic ISDN PRI products support both T-1 and E-1 ISDN protocols and the transfer of voice and data over T-1 or E-1 trunks.

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