4
Install the telephone base close to a telephone jack and a power outlet not 
controlled by a wall switch. The telephone base should be placed on a flat 
surface. For optimum range and better reception, place the telephone base in a 
central and open location. 
If you subscribe to high-speed Internet service (DSL - digital subscriber line) 
through your telephone lines, you must install a DSL filter between each 
telephone line cord and telephone wall jack (page 7). The filter prevents noise 
and caller ID problems caused by DSL interference. Please contact your DSL 
service provider for more information about DSL filters.
Your product may be shipped with a protective sticker covering the telephone 
base and handset displays - remove them before use.
For customer service or product information, visit our website at  
www.telephones.att.com or call 1 (888) 915-2007. In Canada, dial  
1 (866) 288-4268.
Avoid placing the telephone base too close to:
•  Communication devices such as television sets, VCRs, or other cordless telephones.
•  Excessive heat sources.
•  Noise sources such as a window with traffic outside, motors, microwave ovens, 
refrigerators, or fluorescent lighting.
•  Excessive dust sources such as a workshop or garage.
•  Excessive moisture.
•  Extremely low temperature.
•  Mechanical vibration or shock such as on top of the washing machine or  
work bench.
Getting started
Installation