Hi Jorge, that's good news! Would you mind sharing your configuration to us? I wanted to write a small doc on configuring PJSIP to work with IMS, but unfortunately I forgot most of the settings. :D cheers. -benny On 2/7/08, jorge.amador at withus.pt <jorge.amador at withus.pt> wrote: > Hi everyone, > > Thank you all for your hints. I'm now able to register to the P-CSCF. > I had to get the latest svn version and use aka authentication as well > as loose routing. Still I have a curious situation going on. If I > configure the proxy's address with the IP address it works fine but if > I use its url it doesn't register. In both cases I configure the > server's address with its url. Any clue what might be wrong? Best > regards, > > Jorge Amador