How to register handset c56719-2 vtech - Vtech LS6204 1.9 GHz 1-Line Cordless Expansion Handset

SOURCE: My vtech 5825 screen says NOT REGISTERED and does not work

Place the handset in the charger and press find handset for 4 seconds.This will register the handset. do the same for other handsets.

SOURCE: How do I deregister my handsets on my VTech 2656

To be able to register your replacement handset, you must de-register all the handsets from the VT2656 base unit.

Follow the steps below to de-register your handset(s) from the VT2656 base:

1. Take out the handset that sits on the base.
2. Unplug power from the base.
3. Hold down PAGE while reconnecting power. When the In Use light blinks, release the PAGE key.
4. Hold down PAGE key for 5 seconds. When the In Use light begins to flash, release the PAGE key.
5. The handset charging light will blink 5 times. Within 5 seconds from when it stops blinking, press PAGE once.

You must register the handset(s) by following the steps below:

1. After charging the handset, remove it from the cradle, the LCD display will read "SEARCHING FOR BASE".
2. Press "NEW" and then enter the 15-digit Base ID code, located on the underside of the VT2656 base unit.
3. Press "OK". The handset will display "PLEASE WAIT!!".
4. Wait approximately 15 seconds. The handset will display "FOUND BASE". If the handset displays "BASE BUSY TRY LATER", this indicates that the system is in use. Wait until the base unit is in the idle (on hook) mode and repeat steps 2-4.

SOURCE: VTECH LS6125-2

The 6125-2 only supports 2 handsets.

SOURCE: How do I DE-register a Vtech DECT 6.0 wireless

menu
*7890#
Test handset
select
arrow down to "Next Page..."
select
Regstr Clear
select
select again (Reg Clear ?)

You get "OK"

Off
Off (you're backing out of the whole menu)
Off
Off (You now get "Out of range or no pwr at base"

Pull the battery
Replace the battery
(you now have an unregistered handset)

Thank you, this worked for me and I can now register my old handsets from my lightning struck base to my new base, (of a different model, but it still works.)