Benny Prijono wrote: > I don't think that's the reason why pjsip thinks that the registration > had failed. Probably what happened is the server returned modified > Contact header than what pjsua had put in the request, and pjsip > thinks that the registration had failed because it couldn't find its > Contact header there. Maybe there is a configuration in OpenSER that > you use that modifies the Contact header (it's probably got something > to do with NAT, but couldn't remember the exact configuration name for > it). Use fix_nated_register() instead of fix_nated_contact(). regards klaus