Question about Uniden DCX640 Cordless Expansion Handset (unidcx640)

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I bought another handset for my DCX640 because I lost one of the 4. When I try to register it the message is FAILED. What can I DO?

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Posted on Jan 02, 2017

SOURCE: Uniden DCT648 register phone problem

I have contacted Uniden about solving this problem. They suggested I clear the eeprom on the handsets and reset the base. To clear the eeprom detach all of the batteries and reattach while holding the star and pound. You'll hear a beep. Press select and the unit will clear the eeprom. Now hit end and the unit will say "Welcome...something or other". Next unplug the base unit reattach while holding delete. Next hit delete twice...the base is reset. Apparently this is the last possible solution to marrying the handsets and base. This didn't work for me and the units have been declared dead. Good luck in solving your electronic problems.

Posted on May 14, 2007

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Posted on Feb 17, 2008

  • 1 Answer

SOURCE: nEED TO DEREGISTER LOST HANDSET

I had this problem too. Hold "End" and "#"at the same time fora few seconds and it will deregister. Then just put it on the new base.

Posted on Aug 19, 2009

  • 2 Answers

SOURCE: ADDING HANDSET SAYS OUT OF RANGE

A search of Uniden support only said to call 1-800-297-1023 with handset registration issues. The rep picked up quickly and walked me through the reset procedure. Here it is step-by-step:

1. Remove battery
2. Hold down the * and # buttons and reinsert battery. You should hear a long beep. If not retry. (This is a bit awkward but hold the handset upside down and it's workable)
3. Screen will be blank. Immediately press the right soft menu button.
4. Screen will report that EEPROM is clearing and then state EEPROM Clear Ok
5. Remove battery (yes again)
6. Reinsert battery (this time there's no need to hold down any buttons)
7. Handset will reboot with Welcome screen and then state that phone must be registered (this is the status a handset should be in from the factory)
8. Place handset on base and it will register as normal

Posted on Oct 09, 2009

  • 7993 Answers

SOURCE: handsets do not register

Press the END button to exit or erase the message. Press Menu/Select. Scroll uo or down to find Register Base. Select the option, select it and put the handset in the charging cradle of the base. A confirmation beep will sound.

Posted on Jan 12, 2010

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1 Answer

DS6321 out of range, no power at base


This sounds like a registration problem, the handset(s)
and the base have lost identification with each other.

I. To address this, first de-register the handset(s) ---
do this procedure for each handset:

0. Start by taking off the battery compartment cover....

1. press [menu]
2. scroll up/down to "Settings"
3. enter * 7 8 9 0 #
4. scroll down to "next page", press [select]
5. scroll down to "Register Clear?", press [select]
6. display asks "Confirm?" or "Register Clear??", press [select]
7. display reads "Ok" and chirps, press [ off ]

8. UNPLUG THE HANDSET BATTERY (why the cover was off)

9. Wait ~30 seconds, re-connect the battery & replace the cover

10. display reads "Not Registered" ===============================

II. To register the handset to the base:

1. press [Find Handset] on the base and hold for
~4 sec until the "In Use" lamp lights.
2. press # on the handset and set the handset into
the handset cradle on the base
3. within 30 seconds or so, the handset will either
chirp and display "Handset Registered", then
"Handset #1" or it will say "Registration Failed".

NOTE: the battery must be well charged prior to the
registration process, a weak battery may cause a
"Registration Failed". Charge the battery for a few
hours and try the registration ( II ) again.

NOTE: the base can only handle 5 handsets and will
increment the number of each handset registered
until "Handset #5" has appeared, even if some of
the handsets are lost/not in use. Trying to register
more than 5 handsets will result in "Registration Failed."
===============================

III. To clear the base of all handset registrations and
be able to start registering again at Handset #1:

1. press [Find Handset] on the base and hold past ~4 sec when the "In Use" lamp lights, at
about 10 secs the "In Use" lamp will begin to
blink.
2. release the [Find Handset] button momentarily,
then briefly press it again. After a moment,
all handsets that were registered to the base
(if any) will display "Not Registered" and be
ready for fresh registration
3. for multiple handsets, return to II. above and
register each handset in turn.
===============================
Good luck !!

May 02, 2016 | Vtech Lands Phones

1 Answer

3 of my 5 phones say "No Line"?


This sounds like a registration problem, the errant
handset(s) and the base have lost identification
with each other.

NOTE: the CS6429 works a maximum of 5
handsets, so you have a "fully populated system".

You will have to clear each handset ( I ) then clear
the base of all registrations ( II ) before re-registering
each handset ( III ).
=====================================
( I ). First de-register each handset ---

0. Start by taking off the battery compartment cover.

1. press [menu]
2. scroll up/down to "Settings"
3. enter * 7 8 9 0 #
4. scroll down to "next page", press [select]
5. scroll down to "Register Clear?", press [select]
6. display asks "Confirm?" or "Register Clear??",
press [select]
7. display reads "Ok" and chirps, press [ off ]

8. UNPLUG THE HANDSET BATTERY
(this is why the cover was off)

9. Wait ~30 seconds, re-connect the battery &
replace the cover

10. display reads "Not Registered"
===============================

( II.) To clear the base of all handset registrations

1. press [Find Handset] on the base and hold
past ~4 sec when the "In Use" lamp lights, at
about 10 secs the "In Use" lamp will begin to
blink. 2. release the [Find Handset] button momentarily,
then briefly press it again. After a moment,
all handsets that were registered to the base
(if any) will display "Not Registered" and be
ready for fresh registration ===============================

( III.) To register each handset to the base:

1. press [Find Handset] on the base and hold for
~4 sec until the "In Use" lamp lights.
2. press # on the handset and set the handset into
the handset cradle on the base
3. within 30 seconds or so, the handset will either
chirp and display "Handset Registered", then
"Handset #x" or it will say "Registration Failed".

NOTE: the battery must be well charged prior to the
registration process, a weak battery may cause a
"Registration Failed". Charge the battery for a
few hours and try the registration ( III ) again.

===============================
Good luck !!

Apr 16, 2016 | Vtech Accessory Handset with Caller ID for...

1 Answer

There is a message "Searching" on the phone, How do I get it back to working.


You might try to de-register the handset and re-register
it to the base. Be sure the handset's battery is well
charged, a weak battery can impede the registration.

( I ) To de-register the errant handset:

1. Press and hold the [END] and [ # ] keys at the same time until the screen displays
"System Reset, Deregister Handset"
2. press [select]
3. scroll to "Base Unavailable"
4. press [select]
5. display says "Not Registered"

( II ) To register the handset to the base:

1. open the base display's [menu]
2. scroll to "Register Accy."
3. press [select]
4. on the handset, press and hold [ # ] until
the handset display says "Registering"
5. In ~30 seconds, handset display will say
"Registration Complete" or
"Registration Failed".

This is described on page 22 of the manual.
A free copy of the User's Manual can be obtained
at www.manualslib.com .

Good luck!
------------

Jan 15, 2016 | Uniden D16883 Phone

1 Answer

Setting up my outgoing message: just purchased Uniden cordless DECT 1580. Manual says select command 8. How do I find Command 8? thanks, joan


Hi,

please follow the instruction to register the handset to base

To register a DCX150 accessory handset:
1. Charge the handset completely.
2.Place the handset in the base cradle for about thirty seconds. Handset Registering will appear in the LCD.
3.When the handset has registered to the base, the LCD will display Registration complete then show the handset ID number.

If the display shows Registration failed, repeat the process again.

To register a DCX200 or DCX300 accessory handset:

1.Charge the handset completely.
2.Disconnect the base AC adapter. Then press and hold find while you reconnect the adapter. Keep holding find until the charge LED starts to blink.
3.On the handset, press and hold # until the handset beeps and displays Handset Registering.
4.When the handset has registered to the base, the LCD will display Registration complete then show the handset
ID number.

If the display shows Registration failed, repeat the process again.

Thanx

Jul 21, 2010 | Uniden Cordless Phone

1 Answer

Can I use handsets from another DCT 748 unit to expand my DCT 748


Short answer:
No. This model of phone can only support 4 handsets. If you need more than that, you will need to have a second base unit.

Detailed answer:
One of my handsets went bad, and I just bought complete DCT748-4 package from a seller on eBay for a very good price. This set was used, but in very good condition. I didn't need the whole set - just one handset - but like I said, it was a good price. Anyway, I began by telling my old base unit to de-register handset #2 (the failed unit). However, I then found that I could not register the "new" handset with my old base unit because it was already registered to the "new" base unit. So, I first had to apply power to the "new" base unit and de-register the handsets. Then, I placed one of the "new" handsets onto my old base unit, and it said "Handset Registering ..." and registered just fine. Just for the fun of it, I placed one of the other spare handsets into my old base unit. It said "Hanset Registering ..." but then it beeped and said "Registration Failed." This is because I already had 4 handsets registered to my base, and the base can not handle a fifth handset.

Feb 15, 2009 | Uniden DCT-748-4 Telephone

1 Answer

How to register phones to base unit - uniden dct648


Unplug the unit again and press the intercom/find handset button while you re-connect the adaptor.  Then dock the phone unit once again and it will re-register.

Sep 14, 2008 | Uniden DCX640 Cordless Expansion Handset

1 Answer

PHONE WAS DROPPED INTO POND


dropped house phone in toilet? help

Jul 03, 2008 | Lands Phones

2 Answers

Deregister lost or broken phones


Some tricks from a helpful Uniden rep:

holding down end+# keys at the same time on the phone for about 10 secs (you will hear a beep) will deregister the handset. If you have a dead handset and want to deregister it from the base, you have to reset the base. unplug the phoneline and power. hold down the "delete message" key, plug power back in. about 10 secs later, you will hear a long beep (theres a short beep upon powerup as well). At this point all handsets are deregistred and you will have to reregister them with the end+# trick. this way when #1 handset is dead, you can make a working one #1 and get the broken one fixed emotion-1.gif

BTW, this is a woot warranty, not uniden warranty. however the uniden rep gave me the number to the people who refurb (rox0rz!) these. I'll post an update when I finally get ahold of them (and the number if its actually helpful)

Jun 20, 2008 | Uniden TRU8885 Cordless Phone

1 Answer

Handset Fails to Register


It is quite possible that you'll need to go into the menu settings on your base-unit and reset the unit or restore factory default, whichever option it gives you. Also, look in the menu on the phone to see if there is an option to reset the handset also. After resetting the unit and/or handsets, try to register the handsets again, one at a time. If that still does not fix the problem, you may have handsets that are not compatible with your system, or your system may not be able to support that many phones. However, if you have the right handsets, and your system can host that many handsets, then I'm confident that resetting the unit and re-registering your handsets should fix your problem.
Hope this helps! Have a nice day!

Apr 05, 2008 | Uniden DCX640 Cordless Expansion Handset...

2 Answers

Caller id


This is a feature from your phone company you may have to pay extra for. Caller ID information is normally transmitted just after the first ring. When you are using call waiting there is no ring.

Jun 19, 2007 | Uniden DCX640 Cordless Expansion Handset

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