Hello, I am trying to integrate a 3rd party Media engine into pjsip version 2.0.1. I followed the link http://trac.pjsip.org/repos/wiki/3rd_Party_Media_20. In my implementation I need to use pjmedia transport while letting other operations (Like jitter buffer, recording playing etc) to the media engine. I am getting an access violation error while trying to send RTP packet using the function pjmedia_transport_send_rtp(g_call_med.tp, in_data, len); g_call_med is a global variable which I set in pjsua_aud_channel_update() (I receive it there as an argument?). My media engine notifies in case of a RTP packet is ready to be sent and I receive it in a callback function and from there I try to send using pjmedia transport. I get access violation at following exact line (In red color)... PJ_INLINE(pj_status_t) pjmedia_transport_send_rtp(pjmedia_transport *tp, const void *pkt, pj_size_t size) { return (*tp->op->send_rtp)(tp, pkt, size); } I am not sure what is wrong. John -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20121031/ac886be7/attachment-0001.html>