Deregistering Handsets; Deregister All Handsets From The Telephone Base - AT&T CL83519 User Manual

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.
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

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
telephone base and chargers before you begin
deregistration.
2. Press and hold /FIND HS on the telephone
base for about ten seconds (until the IN USE
telephone base screen shows Registering... Please wait
then it shows Deregister all devices?. Release /FIND HS.
3. Immediately press /FIND HS again while the IN USE
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 the previous page.
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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