Hello, I am trying to make video call between two ubuntu laptops using pjsip-2.5.5. Both laptops run ubuntu 16.04. The pjsip compiles successfully and the preview screen is seen. But when a video call is initiated from either side, in one system it fails with error - vidgui: ../src/pjsip-ua/sip_inv.c:1135: pjsip_inv_verify_request3: Assertion `(status=pjmedia_sdp_validate(l_sdp))==PJ_SUCCESS' failed. Aborted (core dumped) While the same setup runs successfully on two other systems. I am using qt5 for the gui display. The dump of screen and vidgui.log are attached with the mail. Any leads on how to resolve this error, would be a big help. Thank you. Thanks & Regards Meenakshi