Since the weekend our phone has been experiencing lots of intermittent static, and then displaying
LINE IN USE. I have disconnected all the phone lines and then re-connected one at a time. This did
not clear the problem.
Next removed the batteries from the phones and reset each handset, this also failed. The problem is
intermittent which makes it hard to trouble shoot.
If you dial the number directly, the is no ringing on the receiving end, the line acts as though it has been answered
or is open.