AT&T WF721 User Manual

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16
Using Your Device
Using Your Device
17
Important Information
E911 Service
For emergency calls, you may have to provide your location 
address to the 911 operator. 
Power Outages
The Wireless Home Phone device has a battery in the event 
of a power outage with talk time of approximately 3 hours 
depending on environmental factors. However, a landline 
phone requiring separate electric power to operate (e.g., 
cordless phones) connected to a Wireless Home Phone 
device will not place or receive calls (including 911 calls) 
during a power outage. 
If you experience a power outage and your battery is fully 
depleted, it will be necessary to restart your device when 
power is restored by sliding the 
On/Off
 switch off and on.
Device Compatibility
The Wireless Home Phone device is not compatible with data 
or 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 Wireless Home Phone device 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 Wireless 
Home Phone device?
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. 
During a power outage, a standard corded phone which 
doesn’t require electrical power is needed.
How do I install my Wireless Home Phone device?
Refer to pages 4-9 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 quality.
•   If your voice quality is unacceptable, your device may not 
have sufficient signal strength (green bars). You may need 
to relocate the device to another area of your home with a 
stronger wireless signal.