Hello, you have to replace the Rx interface with N5, which is not a dedicated module, but you have to implement it in the config file. You can use http_client for example to interact with PCF from Kamailio, and eventually nghttp2 if you expect some callbacks/notifications to be returned to Kamailio. Alternatively, you can use embedded python3 or Lua for such purposes. To deal with json, the jansson module is a good option in Kamailio, or, again, embedded interpreters could be the alternative. The demo was done on TU Berlin AV testbed running development version of Kamailio, their configs are specific to their infrastructure and additional components, probably just not going to be simply published. But everything on Kamailio was done with the stock/public git master branch. As for a starting point, Kamailio has sample configs for VoLTE, on its git repo (misc/examples/) or you can find some tutorials by various people on the web. Follow the Rx related functions in those configs and replace with N5. Cheers, Daniel On 30.04.24 07:00, Viabhav Bansal via sr-dev wrote: -- Daniel-Constantin Mierla (@ asipto.com) twitter.com/miconda -- linkedin.com/in/miconda Kamailio Consultancy, Training and Development Services -- asipto.com