Appendix 
Deregistering handsets
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 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 the 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 ten seconds (until the  
IN USE light starts to flash). Release  
/HANDSET LOCATOR.
3. Immediately press   /HANDSET LOCATOR while the  
IN USE light is still flashing. (If the light stops 
flashing, start again with Step 1.)
4. It takes up to ten seconds to complete the deregistration process. Before 
registering the handset again, wait for the cordless handset screen to 
display To register HS, see manual.
5. To register the handset(s) to the telephone base again, follow the 
registration instructions on pages 73-74. 
NOTES:
If the deregistration process fails, you may 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 handsets 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 ten minutes, the screen shows  
To register HS, see manual.
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