What is the recommended practice for implementing a self-sustained Presence server from my current Kamailio configuration?  That is I want the Presence module to be fed status updates as Kamailio is routing calls and handling registrations.  So when a user registers, his phone is ringing, he is on the phone, etc.., the Presence module gets notified and can update its subscribers accordingly.  Must I add snippets of codes to all of these events and generate local Publish messages, or is there a better way?

I'm using the latest version 5.4.x.

Regards,