It is almost certainly a fault with the line and you should check it by plugging a different handset into your master socket. If that has the same problem it is safe to call the company you rent your phoneline from and report it as a fault. They will ask what checks you have done and warn you that if the fault turns out to be inside your house AFTER the master socket then you will be liable for charges. If you have tried 2 different handsets in the master socket the fault must lie with the line outside your house and should not cost you anything.
TA FOR INFO MR B
what puzzles me the line is ok for the internet
mobile working ok
if the line is ok for the internet
why does it not work for landline
ff .. I to answered on this thread and my answer has also been removed. My guess is the thread was tidied up by the Ed as the OP was posted a number of times on the same subject.
No more answers needed as bhg has explained quite clearly how to remedy the situation.
The only thing I can add is last year I had a intermitent fault and my ISP was adamant that the fault was internal. After doing the socket test I knew the fault was external .. over the next few days BT dug up 3 of my neighbours drives/crossovers and replaced the manifolds buried in the foorpaths.
By doing the socket test yourself and eliminating an internal fault, you may be able to eliminate a call out fee.
Sorry Prudie. I have a telegraph outside my house in the UK and the technician came yesterday to repair a fault. In Portugal I have just had a fibre optic cable connected from a junction on the road and using three telegraph poles. Yes they do exist and are in use!!