I got a new VM installation just before Christmas as a result of a house move. It was only a few days ago that I was able to plug in my phone after unpacking, but the phone immediately had a "check line cord" error and I could not get any dial tone.
I have dialled my number from my mobile and I hear ringing, but my landline/phone never registers the incoming call.
I have checked the service status and it claims that all is well.
I have tried two different phones - a BT one and a Panasonic one - and mixed and matched the line cords etc. with no result.
I am having the same problem having just bought a brand new twin telephone set. Having plugged in the phones the error message "Please check the line cord" appeared on the handsets. I had a problem with the old handset after an electrical problem. The line was checked last week and found to be working.
Welcome to the forums and may I say that I'm really sorry to hear that your phone line is not working at the moment. I'd really like to help you out.
I've done some testing on the line, and can see no reason for your lack of service. If you're able to eliminate the new phones from being at fault, then I think it's best to arrange for someone to call out and take another look at the line.
I'll send you a private message in order to get this arranged.
Please look to the top right of this page where you'll see a purple envelope icon, click on this and you'll see my message.