
Quick start guide 
E5901/E5902B/E5903B
5.8 GHz cordless telephone 
with caller ID/call waiting

Installation and setup
Choose a central location close to a telephone jack and a power outlet not 
connected to a wall switch. The telephone base can be placed on a flat surface or mounted on a standard wall plate. For optimum range and better 
reception, place the telephone base in a high and open location.
Avoid placing the telephone base too close to:
• Communication devices such as: personal computers, computer routers, television sets, VCRs, wireless routers (wireless broadband, wi-fi, or 802.11) 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.
1. Plug one end of the 
telephone line cord into 
the telephone jack at the 
bottom of the telephone 
base.
5. Plug the other end of 
the telephone line cord 
into a telephone jack.
2. Plug the small end of the larger 
power adapter into the power jack 
at the bottom of the telephone 
base.
3. Route cords through slots.
4. Plug the large end of the larger 
power adapter into an electrical 
Telephone line cord
(Optional for DSL users, see number 
four in the NOTES section, below.)
1. 
2. Use only the power cord supplied with this product, if you need a replacement, visit our web-
3. Be sure to use an electrical outlet not controlled by a wall switch.
4. This power adapter is intended to be plugged into a vertical wall outlet or a floor outlet. The 
5. If you receive high speed internet through your telephone line (commonly referred to as DSL), and 
DSL filter 
NOTES:
The mounting bracket must be used for both tabletop use and wall mounting positions.
site at www.telephones.att.com or call 1 (800) 222-3111. In Canada dial 1 (866) 288-4268. 
prongs are not designed to hold the plug in place if it is plugged into a ceiling, under-the-table or 
cabinet outlet.
you are experiencing interference during telephone conversations and/or your caller ID features 
are not functioning properly, install a DSL filter to the telephone line between the telephone base 
and the telephone wall jack. Contact your DSL service provider for a DSL filter. 
outlet not controlled by a wall 
switch.

Installation and setup
After battery installation, the battery may have enough charge to allow some 
calls. For best performance, place the handsets in the telephone base or the 
charger and allow to charge for 16 hours before use. 
You can keep the battery charged by returning the handsets to the telephone 
base or the charger after use. When the battery is fully depleted, a recharge 
takes about 12 hours. The average talk time on a fully charged battery is 
about eight hours, and the standby time is approximately five days. Actual 
battery life depends on usage conditions and age of battery.
1. Plug the battery securely 
into the plug inside the handset 
battery compartment, matching 
the color-coded label.
4. The battery may have enough 
charge to allow for some calls. 
For best performance, place 
handset in telephone base or 
charger to charge for at least 
16 hours before first use.
Caut ion: Use only the supplied rechargeable battery or replacement battery (model 
27910, part number 89-0099-00-00). To order a replacement battery, visit our website at  
www.telephones.att.com or call 1 (800) 222-3111. In Canada dial 1 (866) 288-4268.
2. Place the battery 
and wires neatly inside 
the compartment.
3. Slide battery compartment 
cover towards the center until 
it clicks into place.
To replace t he  battery, 
press in and push outward 
on the tab to open the battery compar tment cove r. 
Lift out th e old batte ry 
and disconnect it from the 
compartment. Follow the 
instructions on this page to 
install and charge the new 
battery.

Quick reference guide
Cordless handset
CID
Press to display caller ID information.
 PHONE/FLASH
Press to make or answer a 
call. 
During a call, press to receive 
an incoming call if call waiting 
is activated.
MUTE/DELETE
While on a call, press to mute 
microphone. While reviewing the 
call log, press to delete an individual entry, or press and hold 
to clear the caller ID log. While 
predialing, press to delete digits 
from a string.
CENTER
UP
LEFT
DOWN
RIGHT
MENU/SELECT
Press to display the men u. 
Once in a menu, press to select 
an item or save an entry or 
setting. Press  or   to scroll 
up or down while in menus. 
While entering names or num-
bers, press   or   to move 
the cursor.
DIR
Pr ess to di spl ay  d ire cto ry 
entries. 
OFF/CLEAR
Press to cancel an operation, 
back up to the previous menu, 
or exit the menu display.
SPEAKER
Press to activate handset speakerphone. Press again to resume 
normal handset use.
NOTE: For more information, please refer to the user’s manual.
REDIAL/PAUSE
Press to view redial memory. 
While entering numbers, press 
and hold to insert a dialing 
pause.
INT
Press to initiate an intercom 
conversation or transfer a call.

Quick reference guide
Feature menu
> Shows a highlighted item
>DIRECTORY
 CALL LOG
Menu
Telephone base
Feature menu
DIRECTORY 
CALL LOG 
RINGER VOLUME 
RINGER TONE 
KEY TONE 
LANGUAGE 
CLR VOICE MAIL 
DIAL TYPE
Using menus
Press the up or down NavKey   or 
 to scroll through menu items.
Press MENU/SELECT to select or modify  
a highlighted item.
Press OFF/CLEAR to cancel an opera- 
tion, back up to the previous menu, or 
exit the menu display.
CHARGE
On when the cordless handset is properly positioned to 
charge in the telephone base.
VOICEMAIL
Flashes when you have new 
voice mail. (Different voice 
mail system from the answering system on the telephone 
base, requires voice mail service from your local telephone 
company.) 
NOTE: For more information, please refer to the user’s manual.
HANDSET LOCATOR
Press to make handset(s) 
beep. 
IN USE
On when handset is in use or 
when registering a handset.
Flashes while an incomin g 
call is ringing, when another 
telephone is in use on the 
same line, or when de-registering a handset from the 
telephone base.

www.telephones.att.com
Copyright © 2007 Advanced American Telephones. All rights reserved. 
AT&T and the AT&T logo are trademarks of AT&T Knowledge Ventures, 
licensed to Advanced American Telephones. Printed in China. Issue 4 AT&T 02/07.
96-006258-010-100