Getting started
Optional backup battery installation
NOTE: Use disposable AA alkaline batteries only. Do not use rechargeable batteries. 
Open the backup 
battery compartment 
cover.
Step  1
Place the batteries 
in the compartment 
following the polarity 
label +/-.
Align the cover flat 
against the battery 
compartment, then 
slide it to the left 
until it clicks into 
place to lock the 
cover.
Step  3
Step  2
9
In the event of a power failure, if there are four AA batteries (purchased 
separately) are installed in the telephone, your telephone base can still 
operate. All lines will work.
If power fails during a call on the telephone base, the call continues until 
you hang up. If power fails during a call on a handset, you can still make and 
answer calls. During a power failure, although the screen backlight is off, you 
can still make and answer calls. If the power resumes while you are on a call, 
the call continues.
Install the telephone base as shown below: