Glossary 303
Glossary
Instance
A single installation of the ICR. An instance consists of several
components (CallRouter, Logger, Peripheral Gateways, Ad min
Workstations), some of which might be duplexed. An instance can be
dedicated to a single customer or, in some environments, shared among
several customers.
Integrated Services Digital Network (ISDN)
An international standard for telephone transmission. ISDN provides an
end-to-end digital network and provides a standard for out-of-band
signaling. It also provides greater bandwidth than older telephone
services. The two standard levels of ISDN are the Basic Rate Interface
(BRI) and the Primary Rate Interface (PRI).
Intelligent Call Processing (ICP)
AT&T’s name for the facility that allows third-party products such as
the Intelligent CallRouter to pre-route calls.
Intelligent CallRouter (ICR)
The GEOTEL system that implements enterprise-wide call distribution
across call centers. The ICR provides Pre-Routing, Post-Routing, and
performance monitoring capabilities.
Interactive Voice Response. See Voice Response Unit.
Interexchange Carrier (IXC)
A long-distance telephone company such as AT&T, MCI, or Sprint.
Interflow
The ability of a switch to forward calls to another location within the
switch or to another switch. Interflow between switches requires a
dedicated trunk line.
Internet Protocol (IP)
The connectionless-mode network service protocol of TCP/IP. IP
enables the entities in a network to communicate by providing IP
addresses and by numbering and sending TCP data packets over the
network. NICs, PGs, and Admin Workstations in the ICR system use IP
to communicate over a wide area network. See also Transmission
Control Protocol (TCP).
IP router. See Router (IP).
ISDN. See Integrated Services Digital Network.
IVR. See Voice Response Unit.
IXC. See Interexchange Carrier.