I am trying to replace a handeset on my E5640 answering system. I have followed the procedures to deregister the existing handsets but it will not accept the base code for the last one. The handset I am trying to replace is inoperable so it can't be deregistered. Is there a hard reset to delete all existing handsets from the base?

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

The following is for the model ATT 5830.

Enter the following sequence on the base station including the * symbols.
**335782

This will deregister all handsets associated with that base station. Handsets can then be added back into the system by entering the base station ID into the handsets one by one. The base station ID is on the bottom of the base station itself.

To un-register the SB67108 handset from a base unit, SB67118 or SB67138, you will need to do these steps in order:
1. Press menu
2. Key in this sequence *883247#
3. Select deregister
4. Unplug the battery for minimum 10 seconds
5. Plug battery back in and it will want to be registered.
6. Follow the directions in your base unit manual to reregister it.
That's it in a nut shell.

Called the manufactuer.... To do this enter on the handset you want to deregister:

*331734# and press (Menu Key# 1 - top uppermost left button that is unmarked).


This will put the handset back into the register mode.



Hope this helps,

James Pavicic Jr

1)On handset, press MENU, 0, 0, 1.
Handset display shows as follows.



*Skip this step when handset already shows as above.

2) On base unit, press LOCATOR for 3 sec until CHARGE LED flashes.

3) On handset, press OK button. Then wait until the handset display changes as follows.





If you receive an error message indicating the maximum number of handsets have been registered, you will need to deregister the handset from the base unit, then try to register again.

*If this does not work, your unit is defective. Please send your unit for service.

Panasonic Services Company Customer Servicenter
Suite B 4900 George McVay Drive
McAllen, TX 7850



1)On handset, press MENU, 0, 0, 1.
Handset display shows as follows.



*Skip this step when handset already shows as above.

2) On base unit, press LOCATOR for 3 sec until CHARGE LED flashes.

3) On handset, press OK button. Then wait until the handset display changes as follows.





If you receive an error message indicating the maximum number of handsets have been registered, you will need to deregister the handset from the base unit, then try to register again.

*If this does not work, your unit is defective. Please send your unit for service.

Panasonic Services Company Customer Servicenter
Suite B 4900 George McVay Drive
McAllen, TX 7850



1) Press FUNCTION on handset. Then, using the Navigator key, press Down (V) 4 times, Right (>) 1 time, Down (V) 7 times, Right (>) 2 times.
Handset display shows as follows.



*Skip this step when handset already shows as above.

2) On base unit, press MUTE. (MUTE LED flashes.)

3) On handset, press OK button. Then wait until the handset display changes as follows.





If you receive an error message indicating the maximum number of handsets have been registered, you will need to deregister the handset from the base unit, then try to register again.

*If this does not work, your unit is defective. Please send your unit for service.

Getting startedReplace a handsetIf you want to replace a handset or reassign the designated handset numberof a registered handset, you must deregister all the handsets and thenindividually register each handset.To make deregistration easier, read all of the instructions on this page beforeyou begin. To deregister all handsets:Press and hold FIND HANDSET on the telephone base for about 101.seconds (until the IN USE light on the telephone base turns on and starts toflash), then release FIND HANDSET.Press and release FIND HANDSET again. You must press FIND HANDSET2.while the IN USE light is still flashing. The IN USE light flashes forapproximately seven seconds.All system handsets show CONNECTING... The deregistration process3.takes about 10 seconds to complete. All handsets show NOT REGISTEREDwhen the deregistration completes.If deregistration fails, you might need to reset the telephone and try again.To reset:1.Pick up the registered handset and then press talk/flash.Press OFF/CLEAR and place the handset back in the telephone base.2.-OR-1.Unplug the power from the telephone base, then plug it back in.You cannot deregister a handset if any system handset is in use.

I had the same problem with a Uniden 3355 handset and 2355 base. With the new handset I pressed "Menu" and selected "System Reset". I then Selected "Deregister HS" and followed the prompts.
Once this was complete, I returned to "System Reset" and selected "Replacing Base". Following the prompts, when it said "Register Handset" I put it in the base of the 2355, and within a minute it had registered, so both handsets used the base of the 2355!
S.

If the handset has previously worked with the base - press the hangup button and the # key at the same time on the handset for five seconds and follow the prompts to deregister the handset. (System reset - deregister HS - which handset) It will tell you that the handset is deregistered. Then put the handset onto the base and it will register the handset.

i have the same problem and it has happened infrequently several times. you probably have to deregister the handset and re-register it and rest the base and handheld to communicate since my model is different from yours there may be differences in how to go about it but for my model the suggestion is as follows:

go to www.uniden.com for customer support here is a direct link to some frequentlt asked questions http://www.mycusthelp.com/uniden/supportfaq.asp?sSessionID=&lstFilter_a=&lstFilter_b=&lstFilter_c=&txtCriteria=hanset+won%27t+connect+to+base&optcond=2&iStartCount=1


DCT Series Multi Handset Phone - reset to have base and handsets communicate
Question:
I have a DCT Series Multi Handset phone and one or more of the handsets is not working, what should I do?

Answer:
Try resetting the phone system by using the following steps:

1) Enter the "System Reset" menu, then "Deregister HS" submenu.
2) Press volume/up or down arrow keys to select the handset ID to be de-registered from the list, then press the OK soft key.
3) Press the OK soft key. You will hear a confirmation tone. When de-registration is complete, "Deregistration Complete" appears.

4) After de-registering the handset, move to "Replacing the Base Setting" below. When you go through the deregister procedure if you get "out of range", That is okay. Go ahead and go to the next step.

Replacing the Base Setting
1) Enter the "System Reset" menu, then "Replacing Base" submenu. "Do you want to replace Base?" appears.

2) Press the OK soft key. You will hear a conformation tone. The base information will be deleted. When replacing the base is complete, "Please Register" appears, register the handset to the new base.

If your handset is reading out of range. Check the the main base and make sure you unit has power. This can be done by placing the handset in the main base to see if the charge in use light comes on.
If your main base isn't getting power please make sure the ac adapter is plugged in and is warm to the touch. If not the ac adapter would be damaged.
To resolve out of range follow the below steps.
Press and hold the end key.
Press and hold the # key.

Release the keys and select replacing base and press select.
You will see Replace base?
Select Yes and press select.
Now place the handset on the base and it should register to the base and allow for calls to be made.

From: Uniden Customer Support

On most models you can find an option in the menu for De-register? In that case you would select that option and select to deregister the handset.
TRU88 models you go to the main menu and go to De-register HS select yes to deregister the Handset.

DCT5 and DCT6 models: Press menu on the handset. Go to System Reset and Press select. Go to Deregister HS and press select. Arrow up to yes and press select. Then go back into the menu. Go to system reset and press select. Arrow down to Replacing the base and press select. Arrow up to yes and press select.

DCT7 models: Press and hold "end" and "#" until the system reset menu appears on the display. Then follow the instructions from above for the DCT5 and DCT6 deregister procedures once your into the menu.

TRU4 and TRU5 models: Press and hold xfer/del and end until "de-register?" appears. Use the plus+ button to go up to yes and press select.

To register any of the following phones please see you owners manual under either:


•Register handset or


•Register the digital security code.