AT&T Cordless Telephone AT&T Cordless Telephone User Manual

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Registration and deregistration
10
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.
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
(for AT&T models TL92271/TL92371/TL92471)
Make sure that all handsets are out of the telephone base and
chargers before you begin deregistration.
Press and hold /HANDSET LOCATOR on the telephone
base for about 10 seconds until the IN USE light flashes, then
release /HANDSET LOCATOR.
Quickly press /HANDSET LOCATOR again. You must press
/HANDSET LOCATOR while the IN USE light is still flashing.
The IN USE light flashes for about seven seconds. If the light
stops flashing, start again with Step 1 above.
All system handsets show Put handset on BASE to register
and you hear a confirmation tone when the deregistration
completes. The deregistration process takes about 10 seconds
to complete.
After deregistering, register each handset again individually.
See Adding and registering handsets on page 8.
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 above.
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