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13
Getting started
Deregister handsets and headset
If you already have 10 registered handsets and need to replace a cordless
handset, add a cordless headset (AT&T model TL7600, sold separately); or,
if you wish to change the assigned extension numbers of your handsets,
you must first deregister all the handsets, and then re-register each handset
you wish to use. Please read carefully through all the instructions on this
page before beginning the deregistration process. Deregistering a cordless
handset does not remove the data saved on the handset.
This process deregisters all cordless handsets and any cordless headset
registered to the telephone base. Please make sure the telephone system is
not in use before deregistration.
1. On the telephone base, press MENU/ENTER.
2. Scroll down to Registration and press MENU/ENTER.
3. Scroll down to Deregistration and press MENU/ENTER.
4. The telephone base screen shows Deregister all
handsets? <=No >=Yes. Press REP to exit or press
SKIP to continue the deregistration.
5. The telephone base screen shows Deregistering. It takes
about 10 seconds to complete the deregistration. The
screen shows All handsets deregistered and beeps when
the deregistration is successful.
COVM
Speed dial setup
Customer support
Registration
>
Register HS
Cordless headset
Deregistration
>
Deregister all
handsets?
<=No >=Yes
Deregistering
All handsets
deregistered
NOTES:
If the deregistration process is not successful, you might need to reset the system and try again. To
reset: you can press EXIT on the telephone base. You can also reset the telephone base by unplug-
ging the power from the telephone base and plugging it back in.
To re-register a cordless handset, refer to the registration information on page 10.
1.
2.