Hi Unfortunately sip messages with a http contact header are dropped by pjsip, but in the BNF for SIP from RFC 3261 any uri's are allowed. I looked at the code and I found only parsers for sips and sip uriI's. Has anybody wrote a http parser for pjsip? Or can somebody tell me if there is something to pay attention to if I wrote a http uri parser? Best, Juri