When I call BT line from my landline I cannot hear the other end ringing but the phone of person receiving the call rings. If they pick up we still cannot talk so line is not connected.
If I call another Virginmedia phone, or Sky line or a mobile phone everything works normal.
My sister and my nephew both have Virginmedia phone lines and both have same problems.
We all live in Finchley, North London.
I did online check on Virginmedia site and it reported no problems with my line.
Problem seems to be between Virginmedia landline and BT landline.