I have recently purchased this phone with two remote headsets. It's worked just fine until 2 days ago. I have an error on each headset that says "line in use" and I am not able to get a dialtone. When I plug in another phone into a jack, it does not receive a dial tone either. This almost acts like I have a call waiting that hasn't disconnected or I have someone on hold. However, I do not have call waiting or conference calling. I saw someone else has written in with this problem as well, so was hoping someone had an answer for us. Any help would be appreciated. Thank you
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