User Manual
Getting started
6
Telephone installation
Option 2: If you have two one-line wall jacks, install your telephone base as 
shown below.
Plug one end of the 
clear telephone line 
cord (2-conductor) 
into the jack labeled 
LINE 1/L1+L2 on 
the back of the 
telephone base.
Plug the other end of 
the clear telephone line 
cord (2-conductor) into 
the wall jack.
Plug one end of the 
black telephone line 
cord (4-conductor) 
into the jack labeled 
LINE 2 on the back of 
the telephone base.
Plug the other end of 
the black telephone 
line cord (4-conductor) 
into the wall jack.
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.
•
•
9V AC POWER
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.
Plug the small 
end of the power 
adapter into the 
power jack on 
the back of the 
telephone base.
L1 L2
Plug the other end 
of the coiled handset 
cord into the jack at 
the left side of the 
telephone base.
One end of the coiled 
telephone line cord 
has already been 
plugged into the 
handset. Make sure it 
is plugged in firmly.










