AT&T 2400 - Manual (Page 155)

Glossary
Issue 2 December 1995 GL-15
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.