Hi, I tried again this morning phoning my landline from my mobile and it worked fine. I then rang my daughter and asked her to ring my landline and once again it worked. So since I complained yesterday somebody or something has solved the problem, but I am very wary of it happening again. I will need to check the line by phoning it at least once a day.
To answer your question the master phone (with integrated answering machine of a 4 phone set) is plugged into the WIFI via the connector supplied by Virgin when I was advised of the forthcoming changeover.
I hope that the matter is now resolved only time will tell.
David