Hi Davy,
I helped out with some of the CSTA stuff back when it was implemented into sofia.
The way it was implemented into sofia was for events to be fired to control server side DND and CF.
You can also subscribe to those event types (I forget exactly what event type it is) and control DND and CF based on those events
In short, you would need to use the event system. And IMO modules plugin to the event system best. 
Thanks.



On Mon, Feb 16, 2015 at 12:44 PM, davy van de moere <davy.van.de.moere@gmail.com> wrote:
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

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