Question about Uniden TRU 448-2 Cordless Phone

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Uniden TRU 448-2

Need an owners manual

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Re: uniden TRU 448-2

Here's the link; under "product details". Hope this helps :)

Posted on Sep 10, 2007

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I attempted to register several new TCX 905s to my TRU 8866 base without success. I followed instructions from the owner's manual, from Uniden customer support, and from suggestions from this web site. ...

October 10th, 2013 at 9:19 amPROBLEM:
After de-registering handset, handset displays [REGISTRATION FAILED; UNAVAILABLE] when trying to register handset.
This worked for my UNIDEN TRU-9480-2
1) Remove handset from base
2) Remove power cord from back of base
3) Press and hold the [find hs] button on base as you plug the power supply back in; the charge light should then be blinking.
4) Return handset to base and it should register

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You can download the TRU4485 manual at

If you have a different model, select it from the list beginning at

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Operators manual for power max 2.4 ghz digital spread spectrum model tru 448-2 cordless phone/answering machine?


You can download and print the instruction manual in PDF format by clicking this link.

You'll require Adobe PDF Reader installed on your computer to view the manual. If it is not already installed on your computer, download it free from:

Hope this solves your problem. Thanks for using FixYa.

Aug 28, 2010 | Uniden 2.4Ghz Cordless Phone

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My phone is stuck on rotary dialing. My handset had all the options but the dial mode. After caller id setup it went straight to languages and then started back over with ringer volume.

1) When the phone is in the standby mode, press menu/mute.
2) Press - to move the pointer to “Dial Mode”.
3) Press select/ch and the display will show the current setting.
(The initial setting is Tone.)
4) Press + or - to change the selection.
5) Press select/ch and a confirmation tone will sound.
6) Press end to exit.

Customer Help line for UNIDEN 1-800-297-1023

May 30, 2009 | Uniden TRU 448-2 Cordless Phone

1 Answer

Second hand set doesn't work

The second hand set problem was resolved by placing it face down on the base unit. Apparently it needed to be reset for some quirky reason.

I found the solution in the manual, and although it didn't really address the problem, I thought it was worth a try. It worked.

Feb 17, 2008 | Uniden TRU 448-2 Cordless Phone

1 Answer

Uniden tru448-2 rotary dial

You can download the manual from the link below: To set tone dialing see picture below: Please update the question & let us know if the information given was useful to you - Good Luck!

Aug 11, 2007 | Uniden TRU 448-2 Cordless Phone

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