Hi, I get a strange problem: using PJSIP in my app works fine, except for the VoIP provider SimplyConnect. I've traced it to an invalid IP address in the "c=" line in the callee's INVITE SDP. I've checked the caller's SDP's and they're fine. The callee's PJSIP fails creating the media session (PJMEDIA_EINVALIDIP) and aborts the INVITE with "488 Not Acceptable Here". Has anybody seen this before? Why can other SIP clients work fine with SimplyConnect? Attached is a trace of the callee with the faulty c= line and PJSIP's error message. Thanks, Florian -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: sip.txt URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20120221/1e2d7323/attachment.txt>