In my INVITE/SDP i am seeing sometime rfc1918 address which i want fix and replace it with origin public address. ex I am seeing following info in INVITE v=0. o=amsip 0 0 IN IP4 192.168.1.8. s= . c=IN IP4 192.168.1.8. t=0 0. m=audio 22530 RTP/AVP 127 111 0 101.