AT&T ATTTL92273 user manual Deregister handsets, Press and hold /HANDSET Locator on

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

1.Make sure that all handsets are out of the telephone base and chargers before you begin deregistration.

2.Press and hold /HANDSET LOCATOR on the

telephone base for about 10 seconds until the IN USE light flashes, then release /HANDSET LOCATOR.

3.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.

4.All system handsets show To register, see user manual and you hear a confirmation tone when the deregistration completes. The deregistration process takes about 10 seconds to complete.

5.After deregistering, register each handset again individually following 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 above. After the handset is charged for at least ten minutes, the screen shows To register, see user manual.

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