Business idea: Cell Phones

This details how to connect asterisk to your cell phone so you can make free unlimited calling. The cell phone service costs $40 a month and you get to dial something like 5 numbers as often as you want. That's using tmobile.

Calling from the cell phone:
Cell phone calls a line on the asterisk box. Asterisk box then dials out using the internet so as not to tie up a phone line.

Calling to the phone:
If somebody calls the tmobile phone then it costs. Maybe it's possible to use a beeper. Or text messaging. I'm not seeing any unlimited dialing to a home number. If that were the case this would be solved.