its not worth doing as you still get billed for it eventually, but, if you have to then get a BT slave socket (£2ish) and a 9v PP3 battery(50p-£3) with a battery connector (destroy one of the kids noisy toys or 12p from maplin.co.uk). connect the battery to pins 2 and 5 on the phone socket, plug the digibox phone line into your invention and delay your PPV bill till your card goes ***s up. as i said, its really not worth doing