Deregistering A Handset; To Deregister All Handsets - AT&T CL84100 User Manual

Appendix

Deregistering a handset

You can 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 the 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.

To deregister all handsets

1. Press and hold
for about 10 seconds until the base screen shows
Registering handset... followed by
Deregister all handsets?, then release the
LOCATOR button. The base screen shows the
deregistration screen.
2. Immediately press
3. It takes up to 60 seconds to complete the
deregistration process. Wait for the cordless handset screen to alternately
display 1.Press HS LOC on base 4sec and
2.Then press # on handset before registering the handset(s) again.
4. To register the handset(s) to the telephone base again, follow the
registration instructions on the previous page.
After you deregister the handset(s), the telephone base is in idle mode but
the system date and time information needs to be reset. For instructions,
see Set date/time on page 27.
NOTES:
1. If the deregistration process is not successful, you might need to reset the system and try
again. To reset, unplug the power from the telephone base and plug it back in.
2. You cannot deregister the handset(s) if any other system handset is in use.
3. Even if the battery is depleted, you can still deregister the handset by following the steps
above. After the handset is charged for at least 10 minutes, the screen shows
1.Press HS LOC on base 4sec and 2.Then press # on handset.
LOCATOR on the telephone base
/SELECT.
MENU
70
Deregister
all handsets?