We've known that TerreStar Networks and AT&T Mobility were in bed together for quite some time, but evidently the honeymoon phase is finally reaching its logical end. Reportedly, the carrier is gearing up to go live with an extension of service that'll involve satellites and a pinch of luck, giving select customers the ability to roam between its GSM network and TerreStar's satellite network. If all goes to plan (we're not holding our breath, for the record), AT&T will begin to resell satellite service
