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your back-up battery, do not place the AT&T Home Base in direct sunlight or in wet or extremely cold
environments.
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.
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 8-14 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
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