AT&T 5643B User Manual
Quick Start Guide
5.8 GHz Cordless
Telephone/Answering
System 5643B/E5644B
with Caller ID & Call Waiting
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Installation & setup
After battery installation, place the handsets in their base unit or charger and allow to
charge for 16 hours before use. You can keep the battery charged by returning the handsets to their base unit or charger after each use. When the battery is fully depleted, a
recharge takes about 12 hours. Average talk time on a fully charged battery is about eight
hours depending on environmental conditions, standby time is approximately four days.
Plug the battery
pack connector
into handset.
Place the battery
pack and wires in
the compartment.
Place handset in base or charger
to charge for 16 hours before
first use.
Plug power adapter
into an electrical outlet
not controlled by a wall
switch.
Low battery indicator
Return handset to base or
charger to recharge when
this symbol flashes.
(Handset will beep when
battery is low.)
Caution: Use only supplied rechargeable battery or AT&T replacement battery model 27910 (SKU 00102. Part
number 89-0099-00-00).
LOW BATTERY
Press tab to open
battery compartment.
Replace compartment cover.
NOTES:
1. Use only the power cord supplied with this product. If you need a replacement, call 1 (800) 222-3111. In Canada,
call 1 (866) 288-4268.
2. Be sure to use an electrical outlet not controlled by a wall switch.
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