[Freeswitch-users] csta , anyone experience with it?

I've recently gotten the question how easy it would be to have some support for CSTA on FreeSwitch. I noticed there used to be a module for it a few years ago, and I do see things in mod_sofia.c on csta. What is the good approach on this? Is it doable to based on the event socket to push out/in csta messages? Or do I miss some great resource on the topic? Kind regards, Davy Van De Moere