AT&T MERLIN LEGEND Release 3.1, System Programming Manual

Page: 862 / 887

Glossary
System Programming
GL–15
Integrated Voice
Power Automated
Attendant IS II application that automatically answers incoming calls
with a recorded announcement and directs callers to a
department, an extension, or the system operator.
intercom buttons See ICOM buttons.
interface Hardware and/or software that links systems, programs, or
devices.
I/O device (input/output device) Equipment that can be attached to a
computer internally or externally for managing a computer
system’s input and output of information.
IROB protector (In-Range Out-of-Building protector) Surge-protection
device for off-premises telephones at a location within
1000 feet (305 m) of cable distance from the control unit.
IS II/III (Integrated Solution II or Integrated Solution III) Set of UNIX
system-based applications that augments and provides
additional services using the system.
ISDN (Integrated Services Digital Network) Public or private
network that provides end-to-end digital connectivity for all
services to which users have access by a limited set of
standard multipurpose user and
network interfaces ;
provides digital circuit-switched or packet-switched
connections within the network and to other networks for
national and international digital connectivity.
ISDN 7500B Data
Module Data communications device that allows connection
between an RS-232
DTE device and the control unit via
MLX extension jacks on the 008 MLX or 408 GS/LS-MLX
module.
J
jack
Physical connection point to the system for a telephone,
trunk, or other device. Also called “port.”
K
kbps Kilobits per second.