Specifications

Module Connector. This connector is needed only if you have two
modules. It joins the modules together so that all the lines and extensions
are connected.
System Phones
This guide refers to AT&T telephones specifically designed to work with the
system as system phones. These include the MLS-18D, MLS-12D, MLS-12,
MLS-6, MLC-6, MDC 9000, and MDW 9000 telephones.
System phones have several buttons in common: four line buttons, two intercom
buttons, volume control buttons, and the [ Feature ], [ Conf ], [ Transfer ], and [ Hold ]
buttons. Some models have four calling feature buttons (to access the Privacy,
Last Number Redial, Recall, and Conference Drop features with the touch of one
button) and eight Auto Dial buttons, on which frequently-used outside phone
numbers or extension numbers can be stored.
The MLS-18D and the MLS12D phones have a display; users receive messages
and prompts when making calls and changing system options. (More
information about the display is provided in Chapter 5.) Table 1-1 summarizes
system phone features.
Table 1-1. System Phones
MLS-18D MLS-12D MLS-12 MLS-6
MLC-6
MDC 9000
MDW 9000
Calling Feature Buttons
✔ ✔ ✔
— —
Programmable Auto Dial Buttons
✔
✔ ✔
— —
Display
✔ ✔ —
—
—
Speaker
✔ ✔
✔
✔
—
Microphone
✔ ✔ ✔
—
—
Auxiliary Equipment
Many industry-standard, single-line telecommunications devices will work with
your system, all without expensive adapters or additional phone lines:
Touch-tone, rotary, and cordless phones, such as those you might have
in your home (referred to hereafter as standard phones)
Fax machines
Answering machines
Modems
Credit card scanners
In addition, you can connect the following devices to your system:
Loudspeaker paging systems allow you to broadcast messages over a
large area, by connecting the paging system to a line jack on a system
module. The system supports all AT&T paging systems.
■
■
■
■
■
■
■
Overview 1-3