Question about Uniden DCT648-3 Cordless Phone
I have the base unit, 3 charging units and 4 handsets. All 4 handsets currently have "Place handset on Main base to register" on the their LCDs. All handsets are fully charged after 20+ hours of charging. When I place the handsets on the base to register the phone I receive a "Registration failed" readout on the phones. I have tried registering the phones in excess of 20 times for each individual phone. The handsets and base all have matching number formats (I'm guessing these are model, manufacturing and serial numbers). There are no buttons that will work individually on the phones (although the keypad will light up). I have also tried pressing the "end" and "#" keys simulaneously with no result. The base will answer phone calls on the intercom. Any assistance to activate the phones would be greatly appreciated. Thank you.
From any of the other phones simply press the MENU button go down to SYSTEM RESET and hit SELECT. Then choose Deregister HS and choose the one that is giving you the problem. Once deregistered, place the phone on the base and it will now register.
Posted on Apr 05, 2009
I had a very similar situation and I did solve it. You have to have at least one phone that is correctly registered. You press "menu", go to "system reset" (press "select" key), go to "Replacing base" (press "select" key), go to yes (press "select" key). Now all of your phones need to be reregistered, but that worked fine for each. Apparently it has to release all of the old registration data before it accepts new phones. As the other user (and I followed his advice first) said, good luck in solving your electronic problems.
Posted on Jan 28, 2008
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
If you are having trouble getting a message Registration Failed you may have to deregister an old handset no longer in use to make room on the system for the new handset
Posted on Sep 10, 2011
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