Replacing a handset
If you are replacing a handset on a system which already has the maximum number of handsets registered (4), or wish to change the assigned handset number of your registered handsets, you must first
To de-register all handsets (E5640/E5643B/E5644B)
•Unplug the power supply from the telephone base.
•Plug in the power supply while pressing and holding the HANDSET LOCATOR button on the telephone base.
•Continue pressing HANDSET LOCATOR until the IN USE and CHARGING indicators are lit. This should take about 10 seconds.
•Release the HANDSET LOCATOR button.
All handsets will display:
ENTER BASE ID
Once the base indicators turn off (may take up to 30 seconds), the handsets are
7
