Question about Uniden TRU4485-2 Cordless Phone

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Wireless phone intermittently works

I get a busy signal when calling my home phone. And when I'm home, I can call out only if I unplug the line into my phone jack and call right away. It seems like it doesn't hang up anymore. If I don't reset my phone this way, I'll get a loud beep, beep, beep the next time I try to use it, which sounds like a busy signal from the other end.

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Thank you for offering to help, but I think I've actually found the problem myself. I opened up the jack last night and found that one of the white wires was disconnected. I'm not quite sure if this will fix the issue because I didn't have enough time to actually reconnect it, but I have a feeling it just might do the trick. I'll work on it tonight. Thanks again.

Posted on Jan 08, 2009

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Md 760 series cordless telephone system


Try unplugging all telephone (including the base unit), then try to call the number again. If there is still a busy signal, then the problem is with your telephone line/connection and you need to call your phone provider. On the other hand if the number rings, then chances are that base unit is defective (or one of your other phones physically connected to the tel line.).

To verify that it is the base unit or one of the other wired telephones,  reconnect them one by one and determine which of them will cause the busy signal. Problems like this can be caused by a power surge, near lightning strike or a simple component failure.

If it is the base unit, it is very likely an electronic problem and therefore would require familiarity with components and circuitry diagnosis, soldering and use of a DVM. Perhaps your best bet would be to seek the services of a qualified phone technician.

Hope this be of some help/idea. Post back how things turned up or should you need additional information.

Good luck and kind regards.

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