VTech LS6375-3 Manual - Manual (Page 69)

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Appendix
Replace a handset/headset
If you want to replace a headset or handset, or reassign the designated
handset number of a registered handset, you must deregister all the handsets
and headset that are registered to the telephone base. Then register each
handset and headset individually.
To make deregistration easier, read all of the instructions on this page before
you begin.
To deregister all handsets and headset:
Press and hold /FIND hANDSET on the telephone base for about
10 seconds until the IN USE light on the telephone base turns on and starts
to flash. Then release /FIND hANDSET.
Immediately press and release /FIND hANDSET again while the
IN USE light is still flashing. The IN USE light flashes for approximately
seven seconds.
The deregistration process takes up to 10 seconds to complete. There
is a confirmation tone from the telephone base. When the deregistration
completes, all handsets display 1.Press FIND hS on base 4sec and
2.Then press # on handset alternately, and the headset light flashes
slowly and alternately in red and blue.
If the deregistration process is successful, you hear “ Not registered ” through
the headset earpiece when you press on the headset. If deregistration fails,
you may need to reset the telephone and try again.
To reset:
Pick up the registered handset. Press / FLASh and then press OFF/
CLEAR
.
Place the handset in the telephone base.
Pick up the registered headset and press the RESET inset button with a
paper clip or similar object.
-OR-
Unplug the power from the telephone base, then plug it back in.
1.
2.
3.
1.
2.
You cannot deregister all handsets and headset if any system handset or
headset is in use.