Glossary

modular

A term that describes equipment made of plug-in units that can be added together to make the system larger, improve its capabilities, or expand its size.

modular processor data module (MPDM).

A data device that converts RS-232C or RS-449 protocol signals to digital communications proto- col (DCP) used by System 75/85, Generic1, and Generic 3 switches. MPDMs may connect INTU- ITY to a switch DCIU or SCI link or connect terminals to a switch port card.

MPDM

See modular processor data module.

MWI

See message-waiting indicator.

N

networking

See INTUITY AUDIX Digital Networking.

networking prefix

A set of digits that identifies an INTUITY machine.

not deliverable message

A voice mail message that could not be delivered after a specified number of attempts. This usu- ally means that the subscriber’s mailbox is full.

O

on-line help

An INTUITY feature that provides information about INTUITY user interface screens by pressing a predetermined key. See also help.

operating system (OS)

The set of programs that runs the hardware and interprets software commands.

option

A choice selected from a menu, or an argument used in a command line to modify program out- put by modifying the execution of a command. When you do not specify any options, the com- mand will execute according to its default options.

OS

See operating system.

outcalling

An INTUITY feature that allows the system to dial subscribers’ numbers to inform them they have new messages.

outgoing mailbox

A storage area for subscribers to keep copies of messages for future reference or action.

Issue 2 December 1995 GL-15

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AT&T 2400 Modular processor data module Mpdm, Networking prefix, Not deliverable message, On-line help, Option