Deregister Handsets; Deregister All Handsets From The Telephone Base - AT&T DLP73290 Complete User's Manual

Appendix

Deregister handsets

You may need to deregister your handsets if:
You have five 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 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.
3. After about 20 seconds, when the
FIND HS and then press it again within two seconds. You hear a confirmation
/HOME light turns on and all handsets display To register HS...
tone. The
and ...see manual alternately. Allow up to one minute for the process to
complete.
4. To register the handset(s) to the telephone base again, follow the
registration instructions on pages 163-164.
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 HS and ...see manual.
/HOME light starts flashing, release
165