Hi Benny, With release 0.8.0 PJSUA regards the 200-OK response to a REGISTER as "unregistration success" in my configuration. With release 0.7.0 and before this worked OK. I found that the response is considered invalid, because the contact header in the response differs from the one in the register: in the register "transport=UDP" was included, but my Call-manager leaves this out in the response. See sip_reg.c - tsx_callback: pjsip_uri_cmp(PJSIP_URI_IN_CONTACT_HDR, .) I would expect that since UDP is default, transport=UDP need not be present in the response. What is your opinion? Regards, Arie Velthoen -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20071127/4266bd63/attachment.html