Hello All, I have the following SDP coming in from a carrier and would like to remove the following line. Cant figure how to go about it. line to remove : *a=cdsc: 1 image udptl t38* sdp is as below Content-Type: application/sdp. Content-Length: 293. . v=0. o=hiQ9200 5859020170708143552 1175715965 IN IP4 X.Y.Z.A. s=Phone Call via hiQ9200 SIPCA. c=IN IP4 X.Y.Z.A. t=0 0. m=audio 16648 RTP/AVP 8 101. a=rtpmap:8 PCMA/8000. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=sqn: 0. *a=cdsc: 1 image udptl t38.* a=sendrecv. a=ptime:20. This reply comes from a upstream carrier in session progress and 200ok causing one-way audio for me. Thanking You, Sunil More Ph : 9503338275