I have looked into this technology as I am in the same situation (out in the country). The one reason that I did not go with this solution was that the technology is not good for VPN support. Apparently for a VPN each IP packet requires an ACK whereas for normal IP comms - like browsing,etc. they are able to group packets together to get the high speed. If you are using a tunneling protocol (VPN) they say that you will not get better than 56K.
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I have looked into this technology as I am in the same situation (out in the country). The one reason that I did not go with this solution was that the technology is not good for VPN support. Apparently for a VPN each IP packet requires an ACK whereas for normal IP comms - like browsing,etc. they are able to group packets together to get the high speed. If you are using a tunneling protocol (VPN) they say that you will not get better than 56K.