I like it. It will be some coding project though, getting the encryption working, avoiding routing errors, and dealing with bandwidth limitations. I think a voice conversation is 64 kbps, so when bandwidth per call gets lower than that do you drop packets, drop to a lower sampling rate, or drop/offload connections?

Reliability will be most important in getting people to use it and it will also be the most difficult thing to improve.

I found this somewhat related link:
"Avaya strengthens IP phones"
<http://www.nwfusion.com/news/2002/13...7-22-2002.html>
"Hoping to extend its PBX market success into the IP realm, Avaya last week unveiled new IP phones and added Wi-Fi into its IP telephony mix."