AT&T CL82107 User Manual page 134

Appendix
Deregistering handsets
Notes:
If the deregistration process fails, you may need to reset the system and try again. To reset, unplug
f f
the power from the telephone base and plug it back in.
You cannot deregister the handsets if any other system handset is in use.
f f
Even if the battery is depleted, you can still deregister the handsets by following the steps
f f
mentioned above. After the handset is charged for at least ten minutes, the screen shows To
register HS, see manual.
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