As far as I am aware they are simple Peer-to-Peer relay devices, used to extend a network from council buildings and schools without actually having to lay any cabels. Just look at it like a very long Cross-Over lead between two switches but in the air instead of trailing dangerously on the floor.
It is the ancestor of the technology AirNet is using to provide you with an internet connection.
*Waits to be smited despite being helpful...
Applauded, thanks for clearing this one up
