Hi, Greetings.! In PJSIP app, I want to modify the complete SDP before the INVITE packet is being sent/acknowledged. For that I'm using on_call_sdp_created() callback. But SDP is not actually modified( inside the on_call_sdp_created function I'm using pjmedia_sdp_parse to overwrite the complete SDP. Inside this function, I'm able to modify any particular attr, but not complete SDP). Any help would be really appreciated. -- *Thanks:* Saurabh Kumar Verma VVDN Technologies Pvt Ltd *Cell* : +91 7042378747 | *Skype* : saurabh.verma001