Thanks for alternatives. About a year ago I was looking for open alternative for Skype (voice connections). Unfortunately, I found that no such thing exists for connections which are not a server-grade (with public IP). I'm behind a router, then another one (ISP NAT), with some port blocking, then probably another one (I'm not sure), and I cannot use anything except server-based solutions. I haven't found any open-source solutions working. Half of these just couldn't connect (throwing illogical errors), the other half tried to manipulate router which is not mine. Well, after researching about Skype and how its internals are protected far more beyond normal copyright (do they try to mask backdoors this way?), I decided not to go with it and not use voice communication at all. MCbx