How It Works; Device Installation - AT&T MF279 User Manual

How It Works

The AT&T Wireless Internet device uses the AT&T cellular network to provide phone
service to your cordless or corded home phone(s) and Internet access to your
computer and Wi-Fi enabled devices. Place it anywhere in your home where you
have a strong wireless signal. It does not require the use of a home phone wall jack,
unlike traditional home phone service.
The AT&T Wireless Internet device provides many calling services, such as Voicemail,
Caller Number ID, Call Waiting, Call Forwarding, and Three-Way Calling, for your
home phone(s). It also includes a backup battery in case of a power outage.

Device Installation

Before You Begin
The AT&T Wireless Internet device works exclusively with the AT&T cellular network
and DOES NOT use your home phone wall jacks.
Your device should be located:
• Where you have a strong signal from a cell
tower, typically near a window or outer
wall. Signal strength may vary in different
parts of your home.
• Near an electrical wall outlet.
• In the general area where you'll be using
your home phone, computer, or Wi-Fi
enabled devices.
Select which phone and computer/Wi-Fi enabled device you will use with the
AT&T Wireless Internet device:
• A cordless phone system with multiple handsets should be used to place
phones throughout your home.
• If using an existing phone, unplug it from the wall jack.
• For Internet access, you can simultaneously connect up to ten (10) devices per
Wi-Fi network (2.4 GHz and 5 GHz), twenty (20) total, and one (1) via Ethernet.
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