AT&T DECT TL91278 - Manual (Page 66)

61
Replacing a handset
You may need to deregister your handsets if:
You have twelve 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 re-register each handset
you wish to use.
Please read carefully through all the instructions on this page before
beginning the deregistration process.
To deregister all handsets
1. Press and hold
HANDSET LOCATOR on the telephone base for about 10
seconds (until the IN USE light turns on and starts to flash), then release
the HANDSET LOCATOR button.
2. Immediately press and release HANDSET LOCATOR again. You must
press HANDSET LOCATOR while the IN USE light is still flashing. (The
light flashes for about seven seconds. If the light stops flashing, pick up the
handset and place it back into the telephone base, then start again with
step one above.)
3. The handsets will show SEARCHING FOR BASE and it will take about 10
seconds to complete the deregistration process. ALL handsets will show
NOT REGISTERED when deregistration is successful.
4. To re-register the handsets to the telephone base, follow the registration
instructions on page 60.
NOTES:
1. If the deregistration process was not successful, you may need to reset the system and try
again. To reset: pick up the handset and press the HOME/
FLASH
button, then press the
OFF/
CLEAR
button and place the handset back into the telephone base. You may also reset
by unplugging the power from the telephone base and plugging it back in.
2. You cannot deregister the handsets 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 NOT
REGISTERED.
Appendix C