74
Replacing a handset
You may need to deregister your handsets if:
You have twelve registered handsets and need to replace a unit.
 -OR-
You wish to change the designated handset number of your registered 
handsets.
You must first deregister ALL the handsets, and then re-register each handset 
you wish to use.
Please read carefully through all the instructions on this page before 
beginning the deregistration process.
To deregister all handsets
1. Press and hold  HANDSET LOCATOR on the telephone base for about 10 
seconds (until the IN USE light turns on and starts to flash), then release 
the  HANDSET LOCATOR button.
2. Immediately press and release  HANDSET LOCATOR again. You must 
press  HANDSET LOCATOR while the IN USE light is still flashing. (The 
light flashes for about seven seconds. If the light stops flashing, pick up the 
handset and place it back into the telephone base, then start again with 
step one above.)
3. The handset(s) will show SEARCHING FOR BASE and it will take about 10 
seconds to complete the deregistration process. ALL handsets will show 
NOT REGISTERED if deregistration was successful.
4. To re-register the handset(s) to the telephone base, follow the registration 
instructions on page 73.
NOTES:
1.  If the deregistration process was not successful, you may need to reset the system and try 
again. To reset: pick up the handset and press the  HOME/FLASH button, then press the  
OFF/CLEAR button and place the handset back into the telephone base. You may also reset 
by unplugging the power from the telephone base and plugging it back in.
2.  You cannot deregister the handset(s) if any other system handset is in use.
3.  Even if the battery is depleted, you can still deregister the handset by following the 
steps above. After the handset is charged for at least 10 minutes, the screen shows NOT 
REGISTERED.
Appendix C