AT&T CL80067 User Manual page 18

Registration and deregistration
Deregistering handsets
Notes:
If the deregistration fails, you may need to reset the system and try again. To reset, unplug the power
f
from the telephone base and plug it back in.
You cannot deregister the handset(s) if any other system handset is in use.
f
Even if the battery is depleted, you can still deregister the handset by following the steps mentioned on
f
the previous page. After the handset is charged for at least ten minutes, the screen shows To register
HS, see manual.
Deregister all handsets from your telephone base for AT&T models
CL84107/CL84207/CL84257/CL84307/CL84327/CL84347/CL84357/
CL84367
In addition to the cordless handsets, this operation will also
deregister all cordless headsets and speakerphones registered to
your telephone base.
1. Make sure that all handsets are out of the chargers before you
begin deregistration.
2. Press and hold
seconds. The IN USE light turns on after about four seconds.
Keep holding
devices? and the IN USE light begins to flash. Release
/FIND HS.
3. Immediately press
IN USE light is still flashing. (If the light stops flashing, start
again with Step 1.)
4. The deregistration takes about 10 seconds to complete. If the
deregistration is successful, all handsets display To register HS,
see manual.
5. To register the handset(s) to the telephone base again, follow
the registration instructions on page 12.
Notes:
If the deregistration fails, you may need to reset the system and try again. To reset, unplug the power
f
from the telephone base and plug it back in.
You cannot deregister the handset(s) if any other system handset is in use.
f
Even if the battery is depleted, you can still deregister the handset by following the steps mentioned above.
f
After the handset is charged for at least ten minutes, the screen shows To register HS, see manual.
/FIND HS on the telephone base for about 10
/FIND HS until the screen shows Deregister all
/FIND HS or /SELECT while the
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