Continuing the discussion from FreePBX Behind Kamailio Registrar – Extension Routing Issue:
Did you get this going? The original thread is closed
I believe this depends on the scalability requirements.
While we cannot speak for Kamailio, OpenSIPS provides the mid_registrar module: mid_registrar Module
I get that. This was targeted @jural who was running into some issues setting up dsip
That’s another topic I belive 