User`s manual

Getting started
4
IMPORTANT INFORMATION
•  Use only the supplied rechargeable battery or replacement batteryUse only the supplied rechargeable battery or replacement battery 
(model BT185742/BT285742). To order, visit our website at 
www.telephones.att.com or call 1 (800) 222-3111. 
In Canada, dial 1 (866) 288-4268.
•  If you do not use the speakerphone for a long time, disconnect andIf you do not use the speakerphone for a long time, disconnect and 
remove the battery to prevent possible leakage.
Battery installation and charging
Once you have installed the battery, the CHARGE light on the 
speakerphone indicates the battery status (see the table below). 
If necessary, place the speakerphone in the charger to charge 
the battery. For optimal performance, keep the speakerphone in 
the charger when not in use. The battery is fully charged after 
11 hours of continuous charging. See Technical specifications on 
page 45 for battery operating times.
NOTES: 
If you are on a call in low battery mode, you hear a low battery alert tone 
every 60 seconds.
If the battery is not properly installed or no battery is installed in the 
speakerphone, when you place it in the charger, the CHARGE light is off. 
Follow the instructions on page 3 to install the battery.
•
•
CHARGE light Battery status
Red: Flashes every 10 seconds. Battery has very little charge and needs 
charging when the speakerphone is out 
of the charger.
Red: Steadily on. Battery is charging.
Green: Steadily on. Battery is fully charged when the 
speakerphone is in the charger.










