When Powertel is working, its good, bt when something goes wrong, its a living nightmare.
Nothing can ever offer more reliable broadband than adsl, and for 50 dollars or so, telone can do that for you. Generally, a single voip call consumes 64kps uncompressed depending with the codec.
So 4 calls calculated at 64kps is 256kps, Telone can easily cover that for you on there $50 package bcoz it gives you 512kps downloads, lm not sure of the uplink speeds.