Hi Benny, ? I want to ask how can I change my register credentials? ? example: I use username as my username and password as my password, in on_reg_state i received PJSIP_SC_UNAUTHORIZED or any error code, how can I changed my register credential and resend the registration? or is it even possible? ? ? ? Thanks, ? Joseph -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20081105/52ccc8f0/attachment.html>