
Please also read
Part 1 — Important 
Product Information
USER’S MANUAL 
Part 2
© 2002 Advanced American Telephones. All rights reserved.
AT&T and the Globe Design are trademarks of AT&T Corp. licensed to Advanced American Telephones.
2.4 GHz Expansion Handset 2300
 

© 2002 Advanced American Telephones. 
All rights reserved. 
AT&T and the Globe Design are 
trademarks of AT&T Corp. licensed to 
Advanced American Telephones.
Printed in China. Issue 1AT&T 07/02
Visit us at www.telephones.att.com
 

BEFORE YOU BEGIN . . . . . . 1
Parts List . . . . . . . . . . . . . . . 1
Compatiblity . . . . . . . . . . . . . 2
About Handset Registration . . 2
INSTALLATION . . . . . . . . . . 3
Charging Stand Installation . . . 3
Belt Clip . . . . . . . . . . . . . . . . 5
Headset . . . . . . . . . . . . . . . . 5
FEATURE SETUP 
AND OPERATION . . . . . . . 6
DEFAULT SETTINGS . . . . . . . 7
TECHNICAL 
SPECIFICATIONS . . . . . . . 8
CONTENTS
CONTENTS
CONTENTS
 

This User’s 
Manual
NiCd  
battery pack
Handset
Parts List
Your box should include:
Charging Stand
1
BEFORE YOU BEGIN
BEFORE YOU BEGIN
BEFORE YOU BEGIN
USER’S MANUAL 
2.4 GHz Expansion Handset 2300
Please also read
Part 1 — Important 
Product Information
© 2002 Advanced American Telephones.All r ights reserved.
AT&T and the Globe Design are trademarks of AT&T Corp.licensed to Advanced American Telephones.
Part 2
 

Compatibility
This AT&T 2300 expansion handset is compatible with the AT&T 2320, 
2325, 2355 and 2365 telephones. You may add up to three expansion 
handsets to your compatible telephone, for a total of four handsets. 
If you try to install a fifth handset, registration will be blocked.
About Handset Registration
Each expansion handset must be individually registered with 
your AT&T 2320,2325, 2355 or 2365 base. Registration happens 
automatically when you place this handset fully charged into your 
current base. 
(See INSTALLATION beginning on page 3).
The original handset that came with the base is automatically registered 
as Handset 1. Additional handsets will be assigned Handset 2, Handset 3 
and Handset 4. You can rename the handsets by following the directions 
under “Handset Name” in the FEATURE SETUP section of your base 
telephone User’s Manual.
2
BEFORE YOU BEGIN
BEFORE YOU BEGIN
 

Charging Stand Installation
NOTE: Install the charging stand away from electronic 
equipment, such as personal computers, television sets or 
microwave ovens. Avoid excessive heat, cold, dust or moisture.
1 Connect the power cord to an electrical outlet not
controlled by a wall switch.
3
INSTALLATION
Standard 
electrical 
outlet
INSTALLATION
INSTALLATION
 

2 Install the handset battery. 
Use only AT&T Battery 3301, SKU# 91076.
3 Charge the handset battery.
• Place the handset in the charging stand.
• Charge the battery at least 12 hours. After the first charge, 
the battery will charge in eight hours.
4 Register your handset.
After handset is fully charged place it in the base of your 
2320, 2325, 2355, or 2365 telephone, it will automatically be 
registered and you will hear a single beep. If you try to register 
a fifth handset, registration will be blocked.
5 Check for dial tone.
Lift the handset and press P; you should hear a dial tone.
4
b) Plug the battery pack
connector into handset. 
Place the battery pack and 
wires in the compartment.
a) Remove battery
compartment cover by 
pressing on indentation 
and sliding downward.
c) Replace cover by
sliding it on its 
track up over 
battery case until 
it snaps firmly 
into place.
INSTALLATION
INSTALLATION
 

Belt Clip
You can remove 
the belt clip 
from the 
handset.
Headset
You can use 
this telephone 
hands-free 
when you install 
any industry standard 
2.5 mm headset 
(purchased separately). 
For best results use an 
AT&T 2.5 mm headset.
Plug the headset into the 
jack located on the right 
side of the handset 
(under the small rubber 
flap). Do not force the 
connection, but make 
sure the plug fits 
securely.
5
b) Press tabs
on belt clip 
into slots 
on back of 
handset to 
reattach.
a) Pull clip
away from 
handset to 
remove.
INSTALLATION
INSTALLATION
 

6
FEATURE SETUP AND OPERATION
FEATURE SETUP AND OPERATION
FEATURE SETUP AND OPERATION
FOR INSTRUCTIONS 
TO SETUP AND OPERATE
THIS EXPANSION HANDSET,
REFER TO THE MANUAL
THAT CAME WITH YOUR
ORIGINAL BASE
TELEPHONE.
 

7
DEFAULT SETTING
DEFAULT SETTINGS
FUNCTION: DEFAULT SETTING:
Dial Method Tone
Handset Volume 2
Ring Volume 6
External Ring Pattern 0
Internal Ring Pattern 1
Key Click ON
DEFAULT SETTINGS
DEFAULT SETTINGS
 

8
TECHNICAL SPECIFICATIONS
TECHNICAL SPECIFICATIONS
Frequency Range 2400 MHz – 2483 MHz
Channels 95
Channel Spacing 864 kHz
Output Power 23 dBm
Sensitivity -92 dBm
Modulation GFSK
Operating Temperature 0°C – 40°C
Base Unit Voltage 96 – 144 Vrms
(AC Voltage, 60Hz)
Base Unit Voltage 9 Vdc
(AC Adapter Output)
Handset Voltage 3.6– 4.6 Vdc, 600mAh
TECHNICAL SPECIFICATIONS
TECHNICAL SPECIFICATIONS