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F
Fax Management button
An MLS- or MLC-model phone button with a light
that is programmed with the extension jack number
of a fax machine. A user can monitor the light next
to this button to determine when the fax machine is
in use, available, or not answering.
Feature phone
An industry-standard phone that includes
programmable buttons or other built-in features.
400 module
The AT&T equipment component that contains
jacks for connecting up to four Centrex lines to the
equipment controller.
H
Hotline phone
A standard phone that rings another extension
automatically when the handset is lifted.
I
Industry-standard device
A telephone or other telecommunications device
that can be connected directly to the public
telephone network. See also Standard phone and
Proprietary device.
Inside call
A call made from an extension inside the Centrex
system to another extension inside the Centrex
system, using the Centrex extension number.
Intercom call
A call that is made using the [ Intercom ] button on an
MLS- or MLC-model telephone, to call another
system extension without tying up primary Centrex
lines.
Intercom Calling button
A programmable button on which an extension jack
number is stored, to enable one-touch dialing of a
system extension without tying up primary lines.
See also Call Viewing and System.
L
Line jack
The location on 206 and 400 modules that allows
you to connect Centrex lines to the equipment
controller.
Line jack number
The number assigned to each line jack on a 206 or
400 module. Line jack numbers run consecutively
from 01 through 24 (for a two-carrier configuration).
Loudspeaker paging system
Equipment that lets you make announcements from
a central location. Any AT&T paging system can be
connected to the PAGE jack on the primary
processor module in the equipment controller.
M
MLS- and MLC-Model telephones
The AT&T telephones that you purchased as part of
your system. These telephones are specifically
designed for use with the equipment controller.
Models include the MLS-34D, MLS-12D, MLS-12,
MLS-6, and MLC-6 phones.
Music-on-hold system
Equipment that lets you play recorded music to
callers who are placed on hold. A music-on-hold
audio source can be connected to an RCA jack on
the primary processor module in the equipment
controller.
N
Network interface jack
A jack, generally located in your equipment room,
that provides access to a Centrex line coming into
your building from your local telephone company.
A telephone cord from the network interface jack to
a line jack on a 206 or 400 module connects the
Centrex line to your system.
Night Service
A feature that lets you redirect calls received after
hours or when a receptionist is not available to
answer calls.
Glossary
GL-3