'LINE IN USE' error w/ at &t land telephone

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'LINE IN USE' error w/ at &t land telephone

was working for 2 wks, at &t cl2939, ie, new, cheap caller-id, speaker phone, landline; my qwest line comes out of the wall into my qwest modem (dsl internet), then a line out to my telephone; bought phone 2 wks ago from best buy, working great, yesterday get message 'line in use', no dial-tone, line is ok, as i'm using my old phone on it, same set-up, ie, thru modem; when i plugged the new phone directly into the phone wall jack, it fixed the problem, ie, the 'line in use' message on the battery powered digital display ?  maybe the phone is defective, except why would it work ok when plugged directly into the wall jack, plus it has been working fine for 2 wks ?    THANKS         I UNPLUGGED THE BATTERIES FOR A LONG TIME TO RESET THE PHONE, NO HELP.

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Re: 'LINE IN USE' error w/ at &t land telephone

This is the wireless forum. You are going to need to call the land line folks.
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