Hello, Thanks for your help, DTMF RFC 2833 is normally supported by pjsip (with pjmedia_session_dial_dtmf), but pjmedia_session is depreciated ( http://trac.pjsip.org/repos/ticket/1207). The program never calls, it only receive incoming call. it will be used to receive calls from another softphone (for testing). Best regards, pierre Date: Wed, 19 Jun 2013 10:53:31 +0200 From: branko.zebec@xxxxxxxxx To: pjsip at lists.pjsip.org Subject: INVITE Request without SDP Hello, Is this supported in pjsip? And how can i do outgoing call without sdp? Best regards,Branko _______________________________________________ Visit our blog: http://blog.pjsip.org pjsip mailing list pjsip at lists.pjsip.org http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130619/54c89717/attachment-0001.html>