Need to reregister att tl86009 with new base

The extra handset for the TL86109 is the TL86009. The manual for this handset is on the accessory handset page: https://telephones.att.com/pd/379/TL86009-Accessory-handset-with-caller-ID-call-waiting ; see the Support & Manauls tab. The direct link to this manual is https://att.vtp-media.com/products/TL/TL86009/TL86009_CIB_i8.0_20170526.pdf .

Make sure that the base has power and is connected to a working phone (land) line. To deregister all handsets, press and hold the Flash (on the left below the volume buttons) on the base for about 4 seconds. You'll see "Deregister all handsets?". Release the Flash button. Press the Yes soft key (below the LCD screen). You should see the base LCD screen read "Please wait". The registered handsets should read "Out of range or no power at base" until the deregistration is complete. Then you should see the message "Press Hold on base for 4 seconds and then press # on the handset" on all the handsets. The instructions are on pages 11/12 (page 15/16 of the PDF) of the handset manual. They are also in the full manual for the TL86109 on pages 135/136 (141/142 of the PDF) available here: https://att.vtp-media.com/products/TL/TL86109/TL86109_CIB_i14.0_20170526.pdf .

I hope this helps.

Cindy Wells

The secret decoder key sequence, provided by AT&T tech support, to factory reset the TL86009 handset is:

(right softkey "-") * 3 3 1 7 3 4 # (left softkey "-")

The handset they should beep and go into registration mode.

there must be problem with the loud speaker or ringing speaker of the phone.take it to product care center

have it checked by ur near by customer service and ask them to connect

This worked for me after lots of digging....If you have already tryed reregistering your handsets and can only get two-or three to work try this and deregister them and re-register. If your base model number is vt2431: Take the handset out of the base, press **335782 on the dial pad of the base. (do not have the line active or anything , just put the (2) stars and 335782 in (no spaces) on the base unit. This will de-register all of the handsets at one time. Then just re-register the handsets...

Uniden TRU9485 (This didn’t work for me but this was the first instruction from Uniden Tech Support)

TO RESET THE BASE UNIT:
Unplug the base unit AC adapter.
Hold down for 15 seconds the DND, * and “menu” soft key (the middle silver soft key under the LCD) while plugging the base unit AC adapter back in.
All the settings should be reset.

Uniden TRU9485 (Worked for me)
ALTERNATE WAY TO RESET THE BASE UNIT:

Unplug the base unit AC adapter.
Hold down for 15 seconds the DELETE KEY (zero with a line through it) while plugging base unit AC adapter back in.
All the settings should be reset.

This worked for me after lots of digging....If you have already tryed reregistering your handsets and can only get two-or three to work try this and deregister them and re-register. If your base model number is vt2431: Take the handset out of the base, press **335782 on the dial pad of the base. (do not have the line active or anything , just put the (2) stars and 335782 in (no spaces) on the base unit. This will de-register all of the handsets at one time. Then all you have to do is re-register handsets...

This worked for me after lots of digging....If you have already tryed reregistering your handsets and can only get two-or three to work try this and deregister them and re-register. If your base model number is vt2431: Take the handset out of the base, press **335782 on the dial pad of the base. (do not have the line active or anything , just put the (2) stars and 335782 in (no spaces) on the base unit. This will de-register all of the handsets at one time.

YOU might need to deregister the hand set first by holding down the red end (hang up key) and keep it down while holding the # key. If deregister wont work use base unavailable and yes, you are sure twice.

List the handset numbers of those working handsets
Using a WORKING handset follow these directions
Resetting Handsets
If you want to register the handset to a different base or
replace a handset with another one, you must first clear the
registration information from the base and the handset.
1. Press and hold [ ] and [#] for
at least 5 seconds, until the
SYSTEM RESET menu
appears.
2. Select the DEREGISTER HS
submenu. WHICH HANDSET?
appears in the display.
3. Move the cursor to select the handset ID to be de-registered
from the list, and then press the OK soft key. DEREGISTER HS
appears. CHOSE A NUMBER THAT IS NOT ONE OF YOUR WORKING HANDSETS
4. Move the cursor to select YES, and then press the OK soft key.
When ARE YOU SURE? appears, select YES. You will hear a
confirmation tone.
PUT THE HANDSET IN THE BASE CHARGER AND IT SHOULD REGISTER

Hope This Helps - It worked for me

You can unregister your phone without being in the cradle, but to re-register them, just put them back in the cradle.  After being unregistered, they will automatically re-register once they are put back in the cradle of the main base.  Try setting them back in the base cradle to re-register, and hopefully that will work for you.