AT&T CL80111 Cordless Telephone User Manual


 
9
Deregistering 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 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 /HANDSET LOCATOR on
the telephone base for about 10 seconds
(until the IN USE light starts to flash),
then the telephone base screen shows
Deregister all devices?
Release /HANDSET LOCATOR.
3. Immediately press /HANDSET LOCATOR
while the IN USE light is still flashing. (If
the light stops flashing, start again with Step 1 above.)
4. It takes up to 10 seconds to complete the deregistration
process. Wait for the cordless handset screen to display Put HS
on BASE to register before registering the handset again.
5. 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 date and time need to be set.
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 10 minutes, the screen
shows Put HS on BASE to register.
Registration and deregistration