I had a few headaches getting the example P-CSCF example configs from the Kamailio team to run, recent improvements with the IPsec support and code evolution meant that the example config just didn’t run.

So, after finally working out the changes I needed to make to get Kamailio to function as a P-CSCF, I took the plunge and made my first pull request on the Kamailio project.

And here it is!

https://github.com/kamailio/kamailio/pull/2203

It’s now in the master branch, so if you want to setup a P-CSCF using Kamailio, give it a shot, as the example config finally works!