What model Uniden DECT 6.0 system?
SOURCE: 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 
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)
SOURCE: adding handset to Panasonic KX-TGA542M phone. ? how to ?
I ordered a new kx-tg560m handset for my kx-tg5632 base unit, but the enclosed instructions for registering it with the base unit were wrong. Fortunately, I found the old quick setup guide in my files.
If you do not have the same base unit and handset, go to the URL:
http://www.panaxonic.com/RegisterYourHandset.
1. On the handset, press [MENU], then press [0][0]. The handset displays "Refer to manual to prepare base. Then press OK->"
2. On the base unit, press [SELECT] until the desired extension number [H1, H2, H3, or H4] is displayed on the base unit, then press and hold [CALL] until the CHARGE indicator flashes.
3. On the handset, press the [OK] softkey.
When the handset is off and sitting in the charger, the handset's extension is displayed in the upper right corner.
SOURCE: Register additional handsets on a Uniden phone
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.
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.
on the base unit until 
starts flashing. Registration mode will remain active for approximately 3 minutes.
together until you hear a long beep.147 views
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