On May 2, 2018 at 22:21, Fins said...
This is incorrect about Doorbird. Doorbird is SIP protocol and will call mobile devices through the control system app.
I am referring to it’s integration with C4 which is apropos to the topic and the OP’s control system of choice. As of last notice they can only video call up to 5 touch panels, again with C4 in reference here. SIP proxy is no longer used in C4 OS 2.10+ projects but has migrated to combridge and freeswitch.
