Replace A Handset - AT&T TL86109 User Manual

Appendix

Replace a handset

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.
To make deregistration easier, read all of the instructions on this page before
you begin.
To deregister all handsets:
Press and hold FLASH on the telephone base for about 4 seconds until it
1.
shows Deregister all handsets? Then, release the button.
2. Press the YES softkey to continue. You hear a confirmation tone from the
telephone base.
3. The telephone base displays PLEASE WAIT... All system handsets show
Out of range OR no power at base for a few seconds, and then you hear a
confirmation tone from the handset.
4. All the handsets show Press [HOLD] on base for 4 sec, then
press [#] on handset when the deregistration completes. The
deregistration process takes about 10 seconds to complete.
If deregistration fails, you may need to reset the telephone and try again.
To reset:
• Unplug the power from the telephone base, then plug it back in.
After deregistering, register each handset individually. See Add and register
a handset on page 135.
NOTES:
• You cannot deregister the handset(s) if any other system handset is in use.
• During deregistration, all cordless handset(s) and DECT 6.0 cordless headset(s) will also
be deregistered.
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