How do I deregister a vtech handset without access to the old base unit? The handset model is cs6409.

Unfortunately, the old handsets may not be compatible with the new base. The DS6251-2 base only communicates with the DS6250 accessory handset. See the accessory list here: https://www.vtechphones.com/store/pd/4158/DS6251-2-2-Line-2-Handset-Cordless-Phone-with-Answering-System-Smart-Call-Blocker . If the old handsets have been deregistered from the previous base unit, place a handset in the cradle on the base. Wait to see if the handset is registered. Alternately, press and hold Page until you see Registering. Release the Page button. Then press Quiet/# (below 9) on the handset. Wait for the handset to be registered.

To deregister handsets from the DS6251 base, press and hold Page. You'll see Registering Please Wait followed by Deregister all devices? At this point, release the Page button. Then press and release Page or the soft key for Yes.

I hope this helps. These are shown in the manual for the accessory handset. The manual is on available on the accessory handset page: https://www.vtechphones.com/store/pd/4184/DS6250-2-Line-Accessory-Handset-for-DS6251-series-phones . The current link to the manual is https://cdn-web.vtp-media.com/products/DS/DS6250/DS6250_CIB_V2_20200623.pdf .

Cindy Wells

To deregister all handsets, with all handsets in standby, press and hold the Find Handset button on the base for about 10 seconds (or until the In Use light turns on and flashes). Release the Find Handset button. Then press and release the Find Handset button again while the In Use light is blinking. (You have about 5 seconds.) Wait until the process is complete. You should see the registration message on all handsets.

If the deregistration process fails, you can try resetting the unit from a registered handset. Pick up the registered handset that is on the base. Then press Talk/Flash button and then Off/Cancel buttons. Then try again.

The manual for the additional handset, CS6409, that is available for the CS6429 has the de-registration procedure. That manual is available from the product page: http://www.vtechphones.com/products/product_detail/1604 . Click on the Support & Manuals tab. The direct link to the manual is http://cdn-media.vtechphones.com/media/p/document2/products/%7B9B67F082-6CC0-48CC-B7F2-23C65B10A4F1%7D/CS6409_UM_V3_20141202.pdf .

I hope this helps.

Cindy Wells

Here are the steps: Press menu, then press *883247# and then press the up arrow. Select deregister and then unplug and take the battery out for 10 seconds. Plug the phone back in and it's ready to be registered to another device.

Maybe this might help.

The CS6409 is just the handset. The answering machine is part of the base. Enter the model of your base into the box at http://www.vtechphones.com/support/general/manuals to download a copy of the manual.

You may download a copy of the manual here.

Enter the following on the handsets you want to deregister: *331734#, followed by the left soft-key (the key labelled "-" at the top left of the keypad).

Here is a direct link to the User's Manual for your phone:

http://vt.vtp-media.com/ecp/documents/product_Product/1624/UserManual/5352/cs6114_manual_i6.pdf


To view the Owner's Manual with Operating Instructions just use your mouse to click on the link, which is the underlined and highlighted text just above. This will open a new web browser page automatically for you and allow you to view the information at the website indicated and the contents of the Owner's Manual.

You may need ADOBE READER installed on your computer to read PDF documents.
You can download this free at WWW.ADOBE.COM if necessary.
Click on the DOWNLOAD ADOBE READER button on right side of the ADOBE home page when you get there, then follow the onscreen instructions to install the software on your computer.

See page 26 of the manual for detailed instructions on HOW TO REGISTER THE HANDSET TO THE BASE.

Basically, the manual reads as follows:

Not registered appears on the handset and it does not work at all.

The handset may be deregistered from the telephone base.
Follow the steps below to register the handset to the telephone base.

1. Remove the handset from the telephone base.

2. Press and hold FIND HANDSET button on the telephone base for about four seconds until the red IN USE light turns on.

3. Then press # (pound key) on the handset.

It displays Registering... and it takes about 60 seconds to complete the registration.
The handset displays Registered for a few seconds and you hear a confirmation tone when the registration process completes.


I hope that was helpful to you, good luck and take care.

Joe.

for the Vtech cordless phones model DS6322-4 models

In the handset press
*331734# and the menu button, yur handset will be deregistered.

Enjoy unlocking :-)

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.