AT&T MDC 9000 Specifications download pdf (Page 287)

Combination extension

An extension that has two devices connected to it.

Combination extensions can connect two standard

devices or a standard device and a system phone,

but not two system phones.

Control unit

Molded plastic housing, made up of a backplane

and cover. The control unit holds system modules,

which connect lines coming into your building to the

extensions in your system, and also provides

system features.

DGC Group

See Group Call Distribution and Hunt Group.

Doorphone

An AT&T proprietary phone that can be wall

mounted outside your office or in a lobby to allow

visitors to alert any number of system extensions by

pressing a button. The doorphone includes a

speaker and microphone, to allow two-way

conversation between the doorphone and the

phone that answers.

Do Not Disturb

A feature that prevents incoming calls from ringing

at an extension. See also Send All Calls.

Extension

An endpoint in the system (numbered 10–33) that

connects telephones or standard devices, which

can be dialed using the [

Intercom ] button. See also

Programming extension.

Extension jack

The location on 206 modules that allows you to

connect extension wiring to the control unit for

phones (or other telecommunications devices).

Extension number

The number assigned to each extension jack on a

206 module. Extension numbers run consecutively

from 10 through 33 and are used for intercom

calling.

Extension Name Display

A feature that lets users assign a name to their

extension. The name appears along with the

extension number on system display phones when

users make an intercom call or a group call, or

transfer a call.

Extension Programming

A method of telephone programming that lets users

program their own extensions from their system

phones. See also Centralized Telephone

Programming.

External Hotline

A standard phone that is programmed to dial a

predetermined outside number when a user lifts the

handset. See also Hotline phone.

Fax Management button

A system phone button with lights that is

programmed with the extension number of a fax

machine. A user can monitor the lights 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.

Forced Account Code Entry

A system setting that forces users at specified

extensions to enter an account code before making

a call. See also Account code and Forced Account

Code List.

Forced Account Code List

An optional list of account codes that the system

checks when a user enters a forced account code.

If the forced account code entered by the user is on

the list (valid), the user gets access to an outside

line; if not, the user is denied access.

400 module

The AT&T equipment component that has line jacks

for connecting up to four outside lines to the control

unit.

GL-2 Glossary

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AT&T MDC 9000 Specifications Page 287

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