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Appendix
Deregister handsets
You may need to deregister your handsets if:
You have 12 registered handsets and need to replace a handset.
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-OR-
You wish to change the designated handset number of your registered
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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
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 10 seconds. The
telephone base screen shows Registering... Please wait for five seconds,
then it shows Deregister all devices?. Release /FIND HS.
3. Quickly press /FIND HS again or press YES. You must press /FIND HS or
YES within five seconds. If the telephone base returns to idle screen, start
again with Step 1.
4. The telephone base shows Deregistered all devices when the registration
completes. It takes up to 10 seconds to complete the deregistration process.
Before registering the handset again, wait for the cordless handset screen to
display To register, see user manual.
5. To register the handset(s) to the telephone base again, follow the
registration instructions on pages 161-162.
Notes:
If the deregistration process fails, you may need to reset the system and try again. To reset, unplug the power from
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the telephone base and plug it back in.
You cannot deregister the handsets if any other system handset is in use.
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Even if the battery is depleted, you can still deregister the handsets by following the steps. After the handset is
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charged for at least 10 minutes, the screen shows To register, see user manual.
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