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555-230-024
A-20 Issue 5 January 1998
Individual Attendant Access
Allows you to call a specific attendant console. Each attendant console can be
assigned an individual extension number.
Integrated Directory
Allows users with display-equipped telephones to access the system database,
use the touch-tone buttons to enter a name, and retrieve an extension number
from the system directory. The directory contains the names and extensions
assigned to all telephones on the system.
Integrated Services Digital Network — Basic Rate
Interface (ISDN-BRI)
Enables connection of the system to equipment or endpoints that support an
Integrated Services Digital Network (ISDN) by using a standard format called the
Basic Rate Interface (BRI). This feature is a 192-Kbps interface that carries two
64-Kbps B-channels and one 16-Kbps D-channel.
ISDN is a global access standard that uses a layered protocol. It eliminates the
need for multiple, separate access arrangements for voice, data, facsimile, and
video services and networks. Using the same pair of wires that now carry simple
telephone calls, ISDN can deliver voice, data, and video services in a digital
format.
The ISDN-BRI Trunk circuit pack allows DEFINITY to support the T interface and
the S/T interface as defined by ISDN standards (ITU-T recommendation I.411).
The circuit pack provides eight ports to the network and supports two B channels
and one D channel. ISDN-BRI Trunk provides the following advantages:
■ Provides an inexpensive way to connect to ISDN services provided by the
network provider.
■ Meets almost all ETSI Country protocol requirements.
■ Supports essential (not supplementary) ISDN services.
Intercept Treatment
Provides an intercept tone or a recorded announcement or routes the call to an
attendant for assistance when calls cannot be completed or when use of a fea-
ture is denied.