Yepp,
I want to connect to my Asterisk server as I can control calling unlike Skype/Gizmo. Yes, I know the included apps connect with SIP (I've done that already). I find that NAT connections are big pain in the *ss with SIP. IAX2 handles this without issues *every* time I've done it (from around the world). I've had one-way audio issues with many NATs when using SIP - but never with IAX2. The last thing I want to do is debug an audio connection when away from home (with only the n810 on hand). I assume that someone can port the iaxlib code to maemo? I guess there' just not enough request/demand for such a thing