12
Registration and deregistration
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 rst 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 for AT&T
models CL82219/CL82229/CL82319/CL82419/CL83519
In addition to the cordless handsets, this operation will also
deregister all cordless headsets and speakerphones registered to
your telephone base.
1. Press and hold /FIND HS on the telephone base for about 10
seconds until the IN USE light on the telephone base turns on
and starts to flash. Then, release the button.
2. Immediately press /FIND HS again. You must press the key
while the IN USE light is still flashing. The IN USE light flashes for
approximately five seconds.
3. The deregistration takes about 10 seconds to complete. If the
deregistration is successful, all handsets display To register HS,
see manual.
4. To register the handset(s) to the telephone base again, follow
the registration instructions on pages 10-11.
Notes:
If the deregistration 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 handset(s) if any other system handset is in use.
Even if the battery is depleted, you can still deregister the handset by following the steps mentioned on
the previous page. After the handset is charged for at least ten minutes, the screen shows To register
HS, see manual.
Deregistering handsets
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