Beg all you want, it's a fact of reality. If you use something like Asterisk as a central server, SIP and OpusVoice, between the protocols you already have a 6-10ms delay before it even hits the wire. If you now have to jump through 20 miles of mesh nodes where you're getting 5-7ms of latency PER HOP, yes, you'll have an audible echo by the time you get to the other end, god forbid it actually hit the internet. Like i've said, other than use it or lose it, there's virtually no point to a mesh network, emcomm or otherwise. (which is a piss poor excuse that people hide behind too much lately) You can do so much more with high gain directional antennas, sector/panel antennas and simple rooftop stuff versus hacked up linksys gear that was NEVER meant to be strapped to a light pole in a tupperware container. I've had better success using AP WDS repeater stuff than anything the hamnet stuff could ever provide. I have 300Mbit floating about 40 miles around town here, all i need is one antenna and 15 foot poles and i can get on the network from virtually anywhere in town. The entire network (tower space/climbers notwithstanding) was a whopping $1500. It's all outdoor rated, commercial carrier class equipment with certified parts and antennas. Anyone who wants a serious network would look this direction, leaving the hamnet stuff in the dust. Like someone else said, you're hamstrung (no pun intended) of what you can even schlep across the link.