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To test the condition of your back-up battery, make sure the AT&T Home Base
is powered on. Unplug the AT&T Home Base from the wall power outlet. If the
Power LED immediately starts blinking red, then the back-up battery may need
to be replaced. If the AT&T Home Base does not remain on (no LEDs are lit)
once unplugged from the wall power outlet, then the back-up battery needs to
be replaced.
It is recommended that you test your back-up battery charge at least once per
year and replace if necessary. 
To order a replacement back-up battery and for cost and warranty information,
visit
att.com
and search
Home Base battery
. 
Device Compatibility
The AT&T Home Base is not compatible with wireless messaging services, home
security systems, fax service, medical alert systems, medical monitoring systems,
credit card machines, IP/PBX Phone systems, or dial-up Internet service. May not
be compatible with your DVR/Satellite systems; please check with your provider.
DSL customers should contact their provider before transferring a phone number
to ensure uninterrupted DSL Internet service.
The AT&T Home Base cannot be used to make 500, 700, 900, 976, 0+ collect,
operator-assisted, or dial-around calls (e.g. 1010-XXXX).
In-Home Wiring
Interconnecting to home telephone wiring is not necessary, but is possible;
however, it is not recommended unless you possess sufficient knowledge of
electrical systems. Use with home wiring requires the physical disconnection from
other services, including the landline coming into your home. Use of a qualified
licensed electrician is highly recommended. Improper installation may result in
phone equipment damage or even a fire.
23
22
E911 Service
For emergency calls, you may have to provide your location address to the 911
operator.
Power Outages
The AT&T Home Base has a back-up battery in the event of a power outage
with talk time of approximately 100 minutes and standby time of approximately
18 hours depending on environmental factors. In the event of a power outage
(commercial power no longer being available), the AT&T Home Base will
automatically begin using the back-up battery, provided there is sufficient battery
charge left. If there is no battery charge at the time of the power outage, the device
will not be operable.
To make calls using your back-up battery, you must plug a corded phone or
landline phone into the “Phone 1” or “Phone 2” port on the AT&T Home Base.
The AT&T Home Base will disable Wi-Fi to conserve power while using the back-
up battery when there are no devices connected. To re-enable Wi-Fi while using
the back-up battery, press the
On/Off button
for one (1) second. Or, if power is
available, plug the AT&T Home Base into an electrical wall outlet.
If you experience a power outage and your back-up battery is fully depleted, it will
be necessary to restart your device when power is restored by pressing and holding
the
On/Off button
for three (3) seconds until the power light stays solid green.
Back-up Battery
A new back-up battery should last for approximately 5 years, but the life of
any back-up battery can be adversely affected by environmental conditions
like moisture and heat. To get the longest service from your back-up battery,
do not place the AT&T Home Base in direct sunlight or in wet or extremely
cold environments.
Important Information
Page 17 / 33
Frequently Asked Questions
What kind of phone do I need to work with the AT&T Home Base?
Most standard touch-tone phones may be used. Rotary phones are not
supported. Cordless phone systems provide the most flexibility and allow you to
easily place additional handsets throughout your home. Cordless phone systems
still need to be plugged into a power outlet. A standard corded phone can be used
if you just need one phone in your home.
During a power outage, a standard corded phone which doesn’t require electrical
power is needed.
How do I install my AT&T Home Base?
Refer to pages 4-10 of this guide for the most common installation methods.
Other helpful information:
•
Installation near a window or outside wall is strongly recommended to ensure the
strongest possible wireless signal in order to maximize voice/data performance.
•
If the AT&T Home Base signal strength indicator does not display high signal
strength (Green) or voice/data performance is unacceptable, you may need to
relocate the device to another part of the home with a stronger wireless signal.
Will my AT&T Home Base work in areas with no or low wireless signal strength?
A strong wireless signal (Green) is recommended for optimal performance.
A moderate signal (Yellow) may be sufficient. If you do not see a green light, you
may want to choose an alternate location.
Does the AT&T Home Base support both voice and data?
Yes, you can use your AT&T Home Base for both voice and data, as long as you
subscribe to AT&T Wireless Home Phone and Wireless Home Internet plans for
the Home Base.
24
Why don’t I see the name of the caller on caller ID?
The AT&T Home Base, similar to other wireless devices, supports calling number
identification.
However, contact names stored on your cordless home phone may display for
incoming calls
.
Can I move my AT&T Home Base and use it in another location?
Yes, you can use your device anywhere in the U.S. where AT&T is authorized to
provide wireless services. All you need is a power outlet and strong AT&T
wireless signal.
When I dial a seven-digit number using the AT&T Home Base, I get a message
that the number cannot be completed as dialed. Does the AT&T Home Base
support seven-digit dialing?
The AT&T Home Base requires 10-digit dialing for domestic calls in most areas.
Can I make international calls with my AT&T Home Base?
Yes. To add international calling to your account, please call 611 from your
connected phone, or 1-800-331-0500.
Can I use my AT&T Home Base internationally?
No. Use is limited to the United States, Puerto Rico, and U.S. Virgin Islands.
What is the warranty on the AT&T Home Base?
The AT&T Home Base has a 12-month limited warranty. For details, see page 54.
I can’t make or receive calls with my AT&T Home Base. What should I do?
Please follow the troubleshooting steps in this User Guide. If further assistance
is required, call 1-800-331-0500.
25
Page 18 / 33
How many devices can I connect to my AT&T Home Base?
There are two phone ports to connect your phone or answering machine. For
data, you can connect up to 10 devices via Wi-Fi simultaneously and one device
via Ethernet.
How can I check my data speed?
You can check your data speed by visiting
att.com/speedtest
.
Will connecting additional devices affect my data speed?
Yes, active use of multiple devices will decrease your data speeds.
Can I change my Wi-Fi network name and password?
Yes, you can change your Wi-Fi network name and password using the AT&T Home
Base Manager. From any connected device, enter
http://att.homebase
directly
into your browser address field and log in using “attadmin” (or your customized
login). Go to
Settings
>
Wi-Fi
>
Basic
to change your network name and
Settings
>
Wi-Fi
>
Security
to change your password.
How do I know how much data I’ve used?
To check your data plan usage for your current billing cycle, go to
att.com/myatt
.
You can also view your data usage and the days remaining in your billing cycle
using the AT&T Home Base Manager. From any connected device, enter
http://att.
homebase
directly into your browser address field and log in using “attadmin” (or
your customized login), and go to
Data Used
.
Once I’ve reached the maximum amount of data in my plan, can I continue to
use my AT&T Home Base for data?
Yes, but overage charges will apply. To upgrade your data plan, visit
att.com/myatt
.
26
Troubleshooting
General
Problem
Possible Solution
None of the LEDs
are illuminated
•
Make sure there is AC power to the AT&T Home Base.
Do not connect to an AC outlet controlled by a wall
switch.
•
Press and hold the
On/Off button
on the back of the
AT&T Home Base for three (3) seconds until the Power
light stays solid green.
Red signal strength
indicator
•
Move your device to another area with sufficient
network signal (Green or Yellow Signal Strength light).
Blinking Red signal
strength indicator
•
SIM is missing or not installed properly.
1)
Remove the bottom of the device and back-up
battery.
2)
Locate the SIM card slot and insert the SIM card
into the slot until secure. The SIM card will click
and lock in place when properly installed in the
correct orientation.
•
SIM card may be invalid or damaged and need to
be replaced. For a replacement SIM card, take your
AT&T Home Base to your local AT&T store. Or, call
AT&T Customer Care at 1-800-331-0500.
SIM Card doesn’t
work in my mobile
device
•
The SIM card provided with your AT&T Home Base is
intended for use only in your specific AT&T Home Base
and cannot be used in a mobile handset.
27
Page 19 / 33
Phone
Problem
Possible Solution
No dial tone
•
Make sure there is AC power to the AT&T Home Base.
Do not connect to an AC outlet controlled by a wall
switch.
•
Make sure your AT&T Home Base is powered on.
Press and hold the
On/Off button
on the back of your
device for three (3) seconds until the Power light stays
solid green.
•
Make sure your cordless phone has power and is
connected properly to the AT&T Home Base.
•
Move the AT&T Home Base to an area with sufficient
network signal (Green or Yellow Signal Strength light).
Caller Number ID
only
•
Like all wireless services, only the calling number is
displayed with Caller ID.
•
Your home phone may support the display of names
stored in its contacts memory.
My answering
machine won’t
pick up calls
•
Set your answering machine settings to pick up calls
before network voicemail, which is approximately four
(4) rings.
•
Or, you can have network voicemail removed from your
account by calling AT&T Customer Care. Dial 611 from
your connected phone or 1-800-331-0500.
28
Phone
Problem
Possible Solution
Poor voice quality
•
Use the phone cable included with the AT&T Home Base.
•
Make sure all connections are firmly in place.
•
Move your AT&T Home Base to an area with sufficient
network signal (Green or Yellow Signal Strength light).
•
Increase the distance away from other electronic
devices and the AT&T Home Base (including cordless
base stations, Wi-Fi routers, and cell phones).
•
Move the AT&T Home Base near a window with a clear
unobstructed view of the sky and remove any objects
that may be obstructing the wireless signal.
•
Make sure the home phone that is connected to the
AT&T Home Base is of good quality and in good
working order.
•
Voice quality may degrade with a low battery charge.
Connect to an AC power source to recharge when
power is available.
Message Waiting
indicator on my
home phone
doesn’t light
•
The AT&T Home Base does not support this
functionality with your home phone.
•
The AT&T Home Base has a dedicated voicemail light
that will blink when you have a new voice message; you
will also hear an intermittent dial tone when you pick up
your handset.
29
Page 20 / 33
Phone
Problem
Possible Solution
I hear an
intermittent
dial tone
•
You will hear an intermittent dial tone when you have a
new voicemail message waiting.
•
Dial
1
from your home phone that is connected to the
AT&T Home Base to listen to your voice messages.
My phone doesn’t
ring when a call
comes in
•
If you recently transferred your landline phone number,
you will continue to receive incoming calls on your
previous service until the transfer is complete. To check
transfer status, visit
att.com/port
.
•
Make sure your AT&T Home Base is NOT connected to
your in-home phone wiring.
•
Make sure your home phone is powered on and
connected to the AT&T Home Base.
•
Your AT&T Home Base number may be set to Call
Forward. Dial
#21#
to un-forward calls.
I hear a constant
low frequency tone
(not dial tone)
when I try to place
a call
•
Hang up your home phone to restore dial tone.
30
Internet
Problem
Possible Solution
Can’t access
the Internet
•
Make sure your AT&T Home Base is powered on. Press and
hold the
On/Off
button
on the back of your device for three
(3) seconds until the Power light stays solid green.
•
For Wi-Fi:
Make sure your AT&T Home Base is located in the
general area of your Wi-Fi enabled device(s). Check that your
device is connected to the AT&T Home Base Wi-Fi network
(ATT-HOMEBASE-XXXX) and you are using the correct Wi-Fi
Password.
For Ethernet:
Make sure the Ethernet cable is
securely inserted into the Ethernet port on the back of the
AT&T Home Base and your computer (or other device).
•
Move the AT&T Home Base to an area with sufficient network
signal (Green or Yellow Signal Strength light).
•
Make sure the Wi-Fi light is on. If not, restart your AT&T Home
Base. Press and hold the
On/Off
button
for three (3) seconds
until all lights turn off. Then, press and hold the
On/Off
button
for three (3) seconds until the power light stays solid green.
•
Check the following on the AT&T Home Base Manager
(
http://att.homebase
):
• Under
Settings
>
Wi-Fi
>
Basic:
“Wi-Fi Broadcast” is set
to “On”
• Under
Settings
>
Network
>
APN:
Profile selection is set
to “ATT Nextgenphone”
• Under
Settings
>
Firewall
>
Mac/IP/Port Filtering:
Check
that the IP and MAC address of your device are not blocked
by the firewall.
31

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