Hi all, I was wondering if any of you have had any experience, or done any testing, of smartphones connected to APs with directional antennas at multi-km distances. I have an extremely radio quiet rural valley that I’d like to push wireless signal into for VoIP but over distances of 1 - 5km. There would be APs on the range beside it with clear line of sight into the whole valley. To help reduce the issue of the hidden node problem (if any devices can even connect at all) I’d look at putting bandwidth limiting on each connected device of maybe 100-200 Kbps to keep the throughput of each one, and therefore collisions with other transmitting devices, as low as possible. I’d also only allow VoIP traffic through the router or AP to make sure that downloading emails doesn’t ruin their phone calls (or maybe just limit non-VoIP data to a very small fraction of throughput if needed). The VoIP client will mostly take care of jitter and buffering, and almost anything would still be better than than not even having a 3G signal as is the case at the moment. Obviously there are a mountain of gotchas and it depends in this scenario but I’d love to hear from anyone that has tried something similar. Thanks, Andrew