The ultimate hack

Hacking started out on phones right? I think that would be great to make this work:

• Go and grab a GSM transciever and rig it up with an asterisk linux based pbx box.
  
• Make the pbx talk VOIP (Work your system out with a VOIP carrier...)
  
• Have your GSM phone talk to the transciever and send your calls through the PBX via IP
  
• Start saving a crapload on calls..
  

found somewhere on slashdot