Can not change the handset name on the base unit?

SOURCE: Hard reset of KX-TCD580 Base

Go to this link; http://panasonic.co.uk/customer-Support/download-centre.asp and input "KXTCD580" in the search box - after a few disclaimer screens you get to the manual for your phone. page 29 details reset for the handset Page 32 details base unit reset Page 48/49 details cancelling handsets to the base Hope this helps, please post again if you are still having problems with your phone :)

SOURCE: Uniden handset TCX905 with base unit TRU8866-if compatible?

Forget what I said before, the TCX905 does NOT fit into the TRU 8866 base unit with the battery cover on.

REMOVE THE BATTERY COVER TO REGISTER THE TCX905 WITH THE TRU8866 and everything works fine....

SOURCE: BT Studio 3100 handset 1.

The handset seemed to function approx 3hours after i posted the problem, it let me register the handset with the base, and now everything all ok.

SOURCE: searching for base

My long-term experience with these phones is that occasionally, they get themselves into some kind of weird state: this is usually indicated by the flashing "searching" message.

In all cases it's been cured by unplugging the power supply AND the phone-line (both simultaneously) from the base, waiting a few seconds, then re-connecting. Normally this sorts things out, but will require you to re-set time& date (the base can sometimes still derive power from the incoming 50v line). Batteries out of handsets is a last (addtional) resort. I've very rarely had to re-register.

SOURCE: My Phone will not connect to the base unit...

My handset displays CONNECTING...
Move the handset closer to the telephone base. You might have moved out of range.

This is what was listed in the Vtech Manual.

What I suggest is not just powering it off, but remove battery and wait a couple of minutes. Put battery back in and try it. The other thing I suggest is a new battery or switching it temporarily with a phone that works, to see if that helps before you buy a new one. If the battery is weak it will have trouble reaching the base.