I dont know if im missing something here but im sure you need to connect the box to a phone line as thats how it sends your info to SKY, e.g when you purchase a film etc… A while ago there was a trick where the card would hold some credit and you could order PPV and use the credit on the card and never connect the box to the line and they wouldnt know, so I think they force you to keep it connected now to make sure your not getting away with anything 🙂