I signed up for VFX this week, and since my SPA-2100 isn't on the list of supported devices I lied and said I'd be using asterisk.
I've used the same device on sipphone, fwd, and various asterisk installs without ever having any issues, and figured all I really need to know is the proxy, user ID, auth ID, password, and perhaps a few other trivialities such as the allowed codecs (g729a), method of sending DTMF (AVT)...
So today I got those details, put them into the web interface and it works perfectly for recieving calls. Good sound quality, voice goes in both directions, etc
But I can't dial out at all.
Any suggestions?