59
Appendix
You may need to deregister your handsets if:
You have 12 registered handsets and need to replace a handset.
-OR-
You wish to change the designated handset number of your registered 
handsets.
You must first deregister ALL the handsets, and then register each handset 
you wish to use again, one at a time.
Please read carefully through all the instructions on this page before 
beginning the deregistration process.
Deregister all handsets from your telephone base
1. Make sure that all handsets are out of the telephone base and chargers 
before you begin deregistration.
2. Press and hold  /HANDSET LOCATOR on the telephone 
base for about 10 seconds (until the IN USE light starts to 
flash), then release the 
/HANDSET LOCATOR button.
3. Immediately press  /HANDSET LOCATOR while the  
IN USE light is still flashing. (The light flashes for about 
seven seconds. If the light stops flashing, start again with 
Step 1.) 
4. It takes up to 10 seconds to complete the deregistration process. Wait for 
the cordless handset screen to display To register HS, see manual before 
registering the handset again.
5. To register the handset(s) to the telephone base again, follow the 
registration instructions on the previous page. 
 NOTES:
If the deregistration process is not successful, you might need to reset the system and try 
again. To reset, unplug the power from the telephone base and plug it back in.
You cannot deregister the handset(s) if any other system handset is in use. 
Even if the battery is depleted, you can still deregister the handsets by following the  
steps mentioned above. After the handset is charged for at least 10 minutes, the screen 
shows To register HS, see manual.
•
•
•
•
•
Deregistering all handsets