AT&T MF279 User manual

User Guide
AT&T Wireless Internet

Welcome to AT&T
Thank you for purchasing the AT&T Wireless Internet device (Model: MF279).
To get the most from your new device, check out our videos and interactive
tutorials at att.com/devicehowto.
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Contents
Getting Started............................................................................................................................................................................... 1
In the Box.........................................................................................................................................................................................1
Getting to Know Your Device...................................................................................................................................... 2
How It Works............................................................................................................................................................................... 4
Device Installation.................................................................................................................................................................. 4
Voicemail...................................................................................................................................................................................... 11
Setup....................................................................................................................................................................................... 11
Message Waiting ............................................................................................................................................................ 11
Retrieving Messages................................................................................................................................................... 11
Remote Retrieval ........................................................................................................................................................... 11
Transferring a Phone Number...................................................................................................................................12
AT&T Wireless Internet Manager.............................................................................................................................12
Using Your Device..................................................................................................................................................................... 14
Calling ............................................................................................................................................................................................. 14
Making Calls....................................................................................................................................................................... 14
Placing a Call on Hold................................................................................................................................................ 14
Three-Way Calling ........................................................................................................................................................ 14
Call Forwarding................................................................................................................................................................15
Call Log....................................................................................................................................................................................15
Internet Access .......................................................................................................................................................................16
Connect Other Devices............................................................................................................................................16
Changing Wi-Fi Network Name and Password....................................................................................17
Important Messages ..................................................................................................................................................17
Managing Connected Devices...........................................................................................................................17
Parental Controls...........................................................................................................................................................17
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Checking Your Voice and Data Usage................................................................................................................18
Helpful Tips................................................................................................................................................................................20
Home Answering Machines.................................................................................................................................20
Adjusting Volume ........................................................................................................................................................20
Powering On/O...........................................................................................................................................................21
TTY Support......................................................................................................................................................................21
Important Information........................................................................................................................................................22
E911 Service ...............................................................................................................................................................................22
Power Outages.......................................................................................................................................................................22
Backup Battery.......................................................................................................................................................................22
Device Compatibility ........................................................................................................................................................ 23
In-Home Wiring..................................................................................................................................................................... 23
Frequently Asked Questions ....................................................................................................................................... 24
Troubleshooting........................................................................................................................................................................ 27
General ......................................................................................................................................................................................... 27
Phone............................................................................................................................................................................................ 28
Internet......................................................................................................................................................................................... 31
Device Conguration ............................................................................................................................................................34
Wi-Fi Settings......................................................................................................................................................................... 34
Basic ....................................................................................................................................................................................... 34
Security ............................................................................................................................................................................... 36
WPS.......................................................................................................................................................................................... 37
Network...................................................................................................................................................................................... 38
Connections.................................................................................................................................................................... 38
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Firewall......................................................................................................................................................................................... 39
Mac/IP/Port Filtering ................................................................................................................................................. 39
Port Forwarding............................................................................................................................................................ 40
DMZ .......................................................................................................................................................................................... 41
Advanced....................................................................................................................................................................................42
Administrator....................................................................................................................................................................42
Router..................................................................................................................................................................................... 43
Time/Date .......................................................................................................................................................................... 45
Call Blocking...................................................................................................................................................................... 45
Backup/Restore............................................................................................................................................................. 45
Specications ............................................................................................................................................................................. 46
Safety Information................................................................................................................................................................. 47
Radio Frequency (RF) Energy...................................................................................................................................... 48
FCC Regulations........................................................................................................................................................................ 49
RF Exposure Information................................................................................................................................................. 49
CTIA .......................................................................................................................................................................................................50
Warranty ........................................................................................................................................................................................... 51
How to Get Warranty Service....................................................................................................................................52
Other Warranty Programs............................................................................................................................................52
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Getting Started
In the Box
The package contains the following items:
AT&T Wireless Internet Device
Ethernet Cable
(Optional)
Phone Cable
(Optional)
Power Cord
Also included:
Let’s get started
AT&T Wireless Internet
Quick Start
User Guide
AT&T Wireless Internet
User Guide
1
Backup
Battery

Getting to Know Your Device
*Allows WPS-enabled devices to be connected via Wi-Fi without typing a Wi-Fi password.
For detailed instructions, please refer to page 16.
2
Power
Voicemail
Wi-Fi
Information
(See AT&T Wireless Internet Manager on page 12.)
Battery Level
Signal Strength
WPS*
Antenna Port
(Optional)
On/O
Telephone
Ports
Ethernet
Power
Input
Antenna Port
(Optional)

LED Indicators
The table below describes possible states for each of the LED indicators.
Indicator Name Status Meaning
Power
Green solid On (AC power)
Green blinking On (Battery power)
O No power
Voicemail Green blinking New voicemail
O No new voicemail
Wi-Fi
Green solid Wi-Fi on
Green ickering Wi-Fi on, data transferring
O Wi-Fi o
Information Green blinking Check the AT&T Wireless Internet
Manager – New message(s)
O No unread messages
Battery
Level
Green solid Battery high
Yellow solid Battery medium
Red blinking Battery low
O Battery needs to be installed
or replaced
Signal
Strength
Green solid (1 to 4 bars) LTE signal
Blue solid (1 to 4 bars) 3G/4G/HSPA+/MicroCell signal
Red solid antenna No service
Red blinking antenna SIM card error
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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 dierent
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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ATT-WI-XXXX
URL: http//att.wirelessinternet
Login: attadmin
Use the following information to connect
to the Internet:
STEP 1: Set Up Your Device
Install the Backup Battery
1. Remove the bottom of the device by pushing the entire cover in the direction
of the arrow.
2. Insert the backup battery.
3. Replace the cover.
NOTES:
• The backup battery is intended for backup purposes only and may take
approximately three (3) hours to fully charge.
• Charge time may be impacted by environmental factors; the backup
battery will stop charging when the ambient temperature is outside of the
temperature range allowed for charging: 32°F (0°C) - 131°F (55°C). 5
A
Ports
Battery

CCheck the Wireless Signal
Wait a few seconds for the Signal
Strength light to turn on, while
your device connects to the
cellular network.
Conrm Signal Strength light
has four (4) lit bars for optimal
performance. Fewer bars
indicate a moderate signal,
which may be sucient.
NOTE: If you do not see four (4) lit bars, you may want to choose another
location in your home, such as near a window or outer wall.
STEP 1: Set Up Your Device (continued)
BTurn On Your Device
1. Plug the power cord in to an electrical wall outlet.
2. Connect the other end of the power cord to the Power Input port on
the back of your AT&T Wireless Internet device.
3. Slide the On/O switch to the ON position. The Power light should be
solid green.
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On/O

STEP 2: Connect Your Phone
Unplug Your Phone From the Wall Jack
The AT&T Wireless Internet device is not used with your home phone wall jack.
NOTE: If you have a cordless phone, keep it plugged in to a power outlet.
BConnect Your Phone to the Device
Plug your phone in to the “Phone” port on the AT&T Wireless Internet device, using
your existing phone cable or the included phone cable.
NOTE: Do not plug the AT&T Wireless Internet device or your phones in to your
wall jacks.
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STEP 2: Connect Your Phone (continued)
Place a Test Call
Place a test call from your connected home phone. Make sure to dial the
10-digit phone number, including area code.
For best results, place the cordless phone base at least twelve (12) inches from
the AT&T Wireless Internet device.
Important Phone Tips
• Voicemail is included with your service. Dial 1to set up and access your voicemail.
If you choose to use an answering machine instead, set it to fewer than four (4) rings.
• To place phones throughout your home, use a cordless phone system with multiple
handsets. Wall jacks are not used with the AT&T Wireless Internet device.
• The second Phone port can be used to connect an additional phone or standalone
answering machine. It uses the same phone number as the rst Phone port.
• Your AT&T Wireless Internet device does not support incoming/outgoing fax service
or home alarm systems.
• Your AT&T Wireless Internet device does not support rotary or pulse-dialing phones.
• Details on using voicemail and transferring a landline phone number can be found
on pages 11-12.
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C

STEP 3: Connect to the Internet
(Requires purchase of Wireless Internet Data plan)
Select Your Internet Connection
To Connect via Wi-Fi:
1. Open the Wi-Fi network manager on
your computer or Wi-Fi enabled device.
2. Find and select the AT&T Wireless
Internet Wi-Fi network name (SSID)
(e.g., ATT-WI-XXXX).
To connect via WPS, see page 16.
To Connect via Ethernet:
Use an Ethernet cable to connect your computer or other device to the Ethernet
port on the back of your AT&T Wireless Internet device. Go to att.net (or your
favorite website) to conrm your Internet connection. Skip Steps 3B and 3C.
BEnter Wi-Fi Network Password
When prompted, enter the Wi-Fi password found on the bottom of the
AT&T Wireless Internet device.
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Wi-Fi Networks
ATT-WI-XXXX
Other Network
Guest Wi-Fi
Free Public Wi-Fi
ATT-WI-XXXX
URL: http//att.wirelessinternet
Login: attadmin
Use the following information to connect
to the Internet:
ATT-WI-XXXX
URL: http//att.wirelessinternet
Login: attadmin
Use the following information to connect
to the Internet:

STEP 3: Connect to the Internet (continued)
CConrm Internet Connection
Go to att.net (or your favorite website) to conrm your Internet connection.
When your device is transmitting to and from the Internet, the Wi-Fi light will
icker green.
Important Internet Tips
• To check your data usage or manage your account, go to att.com/myatt.
• To customize your device settings and view important messages about your
AT&T service plan, use the AT&T Wireless Internet Manager. On any device
connected to the AT&T Wireless Internet device, enter http://att.wirelessinternet
directly into your browser address eld. Use “attadmin” as your login.
• To set up a free AT&T email account, go to att.net/signup.
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Voicemail
Your AT&T Wireless Internet device comes with standard wireless voicemail. Follow
the steps below to set up and use your voicemail.
Setup
Dial 1on any home phone connected to the AT&T Wireless Internet device, and wait
four (4) seconds to be connected to your AT&T wireless voicemail. Simply follow the
voice prompts to complete setup. To enable remote voicemail retrieval and for added
security, be sure to create a password during setup.
For more help on setting up your AT&T voicemail, go to att.com/voicemailsetup.
Message Waiting
There are two indications that a new message is waiting: 1) the Voicemail light and
2) an intermittent dial tone.
The Voicemail light on your AT&T Wireless Internet device blinks green when
a voicemail message is waiting. You will also hear an intermittent dial tone on any
connected phone handset before placing a call.
Retrieving Messages
To retrieve voice messages, dial 1on any home phone connected to the AT&T
Wireless Internet device, and wait four (4) seconds to be connected to your AT&T
wireless voicemail box. Simply follow the voice prompts to listen to and manage your
messages. Alternatively, you may dial your 10-digit home phone number to access
your voicemail box.
Remote Retrieval
To retrieve voicemail messages from a phone not connected to the AT&T Wireless
Internet device, dial the number associated with your AT&T Wireless Internet
service. When voicemail picks up, press the *key. You will then be prompted to
enter your password. Simply follow the prompts to listen to and manage your
voicemail messages.
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Transferring a Phone Number
Transferring a landline phone number to your AT&T Wireless Internet device can
take about four (4) days. Outgoing calls can be made immediately using your
AT&T Wireless Internet device; however, incoming calls (including 911) will continue
through your old service until the transfer is complete. Keep a phone connected to
your wall jack or prior service to continue to receive incoming calls until the transfer
is complete. To check the status of your transfer, visit att.com/port.
AT&T Wireless Internet Manager
The AT&T Wireless Internet Manager allows
you to easily manage your AT&T Wireless
Internet device. You can:
• Customize settings
• Change your Wi-Fi network name
and password
• Check signal strength, data usage,
and important messages from AT&T
• Get help and information
To access the AT&T Wireless Internet Manager, rst connect to your AT&T Wireless
Internet device. In your browser address eld, enter http://att.wirelessinternet and
log in using “attadmin”.
NOTE: You can customize the login that is used to access the AT&T Wireless Internet
Manager by going to Settings Advanced Administrator.
The AT&T Wireless Internet Manager includes a navigation panel on the le side of
the screen, which contains the following sections:
• Home – Displays general device information and help.
• Connected Devices – View devices currently connected to your AT&T Wireless
Internet device and block/unblock devices from connecting.
• Data Usage – Check your data usage details.
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