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Appendix C
Adding and registering handsets (optional)
NOT REGISTERED
PRESS HNDST LOC
4 SEC ON BASE
PLEASE WAIT...
HANDSET X
REGISTERED
Handsets purchased separately (AT&T TL90078) need
to be registered to the telephone base before use.
When first purchased, all expansion handsets show
NOT REGISTERED on the screen. New handsets may
need to be charged without interruption for at least
10 minutes before registering to the telephone base.
To register a handset to your telephone base
1. Make sure the handset is out of the telephone base
or charger and shows NOT REGISTERED before
you begin registration.
2. Press and hold
telephone base for about four seconds (until the
red IN USE light on the telephone base is on) and
then release the button. The IN USE light remains
on while the telephone base attempts to register
a handset.
3. Place the unregistered handset into the telephone
base or charger, PRESS HNDST LOC 4 SEC ON
BASE shows on the handset screen. The handset
is now registering with the telephone base. The
handset then shows PLEASE WAIT...
and it takes up to 60 seconds to complete the
registration. There is a beep sound when the
registration is successful. The handset shows
HANDSET X REGISTERED, with X being the
handset number (1-12).
NOTES:
1. If the registration is not successful, the screen shows NOT
REGISTERED. To reset the handset, remove the handset from
the telephone base or charger, then start again from
step 2 above.
2. You cannot register a handset if any other system handset is
in use.
60
HANDSET LOCATOR on the
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