Deregister Handsets; Deregister All Handsets - AT&T TL96151 User Manual

Appendix

Deregister handsets

If you want to replace a handset or reassign the designated handset number
of a registered handset, you must deregister all the handsets and then
individually register each handset again.
To make deregistration easier, read all of the instructions on this page before
you begin.

Deregister all handsets

To deregister all handsets:
1. Make sure that all handsets are out of the telephone
base and chargers before you begin deregistration.
2. Press and hold
telephone base for about 10 seconds. The telephone
base shows Registering handsets.... Please wait for 5 seconds, then it
shows Deregister all devices?. Release
3. Quickly press
/HANDSET LOCATOR or
returns to the idle screen, start again with Step 1.
4. The telephone base shows Please wait... and then returns to the idle
screen. 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.
5. After deregistering, register each handset again individually. See
Adding and registering handsets (optional) on page 124.
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 mentioned above.
• If in Step 2 you already have 12 registered handsets, the telephone base shows
Registration slots are full and sounds 2 beeps. Continue holding
/HANDSET LOCATOR until Deregister all devices? displays.
/HANDSET LOCATOR on the
/HANDSET LOCATOR again or press
YES
/HANDSET LOCATOR.
within 5 seconds. If the telephone base
125
Deregister
al l devices?
NO
YES . You must press
YES