User Manual
Getting started
5
9V AC POWER
Telephone installation
Connect the telephone line cord(s) and the power cord to the telephone base.
If you subscribe to high speed Internet service (DSL - digital subscriber line) 
through your telephone line, you must install a DSL filter between each 
telephone line cord and telephone wall jack. The filter prevents noise and 
caller ID problems caused by DSL interference. Please contact your DSL service 
provider for more information about DSL filters.
Option 1: If you have a two-line wall jack, install your telephone base as 
shown below.
2.
Plug the other end of the 
coiled handset cord into the 
jack at the left side of the 
telephone base.
Plug the small end 
of the power adapter 
into the power jack 
on the back of the 
telephone base.
Plug one end of the 
black telephone line 
cord (4-conductor) 
into the jack labeled 
LINE 1/L1+L2 on 
the back of the 
telephone base.
Plug the other end of the black 
telephone line cord (4-conductor) 
into the wall jack.
Plug the large 
end of the power 
adapter into an 
electrical outlet 
not controlled by 
a wall switch.
If you have DSL 
high speed Internet 
service, a DSL filter 
(not included) is 
required.
NOTES:
Use only the power adapter supplied with this product. To order a replacement power 
adapter, visit our website at www.telephones.att.com, or call 
1 (800) 222-3111. In Canada, dial 1 (866) 288-4268.
The power adapter is intended to be correctly oriented in a vertical or floor mount position. 
The prongs are not designed to hold the plug in place if it is plugged into a ceiling, 
under-the-table or cabinet outlet.
•
•
L1+L2
One end of 
the coiled 
telephone 
line cord has 
already been 
plugged into 
the handset. 
Make sure it 
is plugged in 
firmly.










