Hi, I've just replaced my home phone but now the crackling on the line is so bad I can't hear the person on the other end! The Brown Box outside has completely disintegrated and the wires are all exposed. It was installed over 10years ago. Could this be the reason? In the instructions for the new BT phone with three handsets it mentions a filter but VM say these don't make any difference to the VM line. Can anyone advise what to do? Do I need an engineer to take a look?