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1-2 Overview
The AT&T product that you purchased as part of your
system. This product consists of a group of modules that
connect Centrex lines coming into your building to the
extensions in your system. The equipment controller also
provides equipment features.
A feature provided by your equipment controller (as opposed
to a service provided by Centrex).
A programmable telephone button on an MLS- or MLC-model
telephone that enables you to access an equipment feature
with one touch, simply by pressing the button. See also Auto
Dial button and Programmable button.
A destination in the system that can be dialed.
The location on 206 modules that allows you to connect
phones (or other telecommunications devices) to the
equipment controller.
An industry-standard phone that includes programmable
buttons or other built-in features.
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.
The AT&T equipment controller and MLS- and MLC-model
telephones that you purchased as part of your system, plus
all other telecommunications devices that are connected to
your equipment controller. For purposes of this guide,
premises equipment does not include any equipment that
connects directly to Centrex lines without going through the
equipment controller. See also System and Centrex system.
The main Centrex line assigned to an extension, generally
used to place and receive all calls for that extension. When a
caller dials a phone number, the call rings immediately at the
extension where the line is assigned as a primary line (unless
line ringing is changed to let another extension screen calls
on the line). See also Secondary line.
A telephone button that can be set up to access a feature.
On MLS- and MLC-model phones, programmable buttons
can be used as Auto Dial buttons (for one-touch dialing of
Centrex feature codes or telephone numbers) or equipment
feature buttons.
A line assigned to an extension for call coverage purposes,
generally with delayed or no ringing. When a call comes in
on the line, it rings first at the extension where it is assigned
as the primary line; only if there is no answer does it ring at
the extension where it is a secondary line. See also Primary
line.
An industry-standard touch-tone or rotary phone such as you
might have in your home. Some standard phones include
special feature buttons for frequently-used calling functions.