VTech SN6187 Manual - Manual (Page 22)

Getting started
16
Deregister all devices
If you want to replace a device, or reassign the designated handset
number of a registered handset, you must deregister all devices that are
registered to the telephone base. Then register each device individually.
To make deregistration easier, read all of the instructions on this page
before you begin.
Make sure no handset is put in the telephone base before deregistration.
To deregister all devices:
Press and hold /FIND HANDSET at the side of the telephone base
for about 10 seconds until the telephone base IN USE light turns
solid red and then flashes red, then release / FIND HANDSET.
Immediately press / FIND HANDSET.
All handsets show To register HS, see manual. The deregistration
process takes about 10 seconds to complete.
To register the handset(s) or pendant(s) to the telephone base again,
follow the registration instructions from page 14 to page 15.
You cannot deregister all devices if any other system device is in use.
If deregistration fails, you may need to reset the system and try again.
To reset, unplug the power and the telephone line cord from the
telephone base. Then plug the cords back in again.
Even if the battery is depleted, you can still deregister all devices by
following the steps above. After the handset is charged for at least
10 minutes, its screen shows To register HS, see manual.
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