Deregister Handsets; Deregister All Handsets From The Telephone Base - AT&T TL96456 Complete User's Manual

Appendix

Deregister 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.
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
10 seconds. The telephone base screen shows Registering... Please wait for
five seconds, then it shows Deregister all devices?. Release
/HANDSET LOCATOR.
3. Quickly press
/HANDSET LOCATOR or
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 129-130.
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. After
the handset is charged for at least 10 minutes, the screen shows To register, see user manual.
/HANDSET LOCATOR on the telephone base for about
/HANDSET LOCATOR again or press YES. You must press
YES within five seconds. If the telephone base
131