Hello, I intentionally posted this here to hopefully attract the immediate attention of any Bria user who also subscribe with ViaTalk. I managed to set everything up successfully for Wifi-based calls, audio and all. However, once I switch to 3G, I cannot hear anything when dialing different numbers. I attempted to call ViaTalk's tech support, but the agent stated that AT&T may have suppressed VOIP calls via 3G (which I do not believe). He further made a suggestion to play with the SIP transport settings to see what happens (only UDP works). I made sure to turn on the 3G capability in the Preferences menu, as well as turn on the STUN 3G under User Specified in Advanced Settings. I even switched the Global IP 3G setting on under Network Traversal in the Account Advanced section. What am I missing????