The phone line is for several reasons. One it allows sly to send "updates" to your digibox to eneble new features, the newest being personal planner, the other reason to for PPV. It tells the card that your box is connected to a phone line, because of the voltage check it runs, and also lets your digi-box connect up to them to let them know if you`ve used any credit on your card buying one of these movies.
