v=0 o=1001 2542 3964 IN IP4 192.168.3.241 s=Talk c=IN IP4 192.168.3.241 t=0 0 a=rtcp-xr:rcvr-rtt=all:10000 stat-summary=loss,dup,jitt,TTL voip-metrics m=audio 7076 RTP/AVP 96 97 98 0 8 18 101 99 100 a=rtpmap:96 opus/48000/2 a=fmtp:96 useinbandfec=1 a=rtpmap:97 speex/16000 a=fmtp:97 vbr=on a=rtpmap:98 speex/8000 a=fmtp:98 vbr=on a=fmtp:18 annexb=yes a=rtpmap:101 telephone-event/48000 a=rtpmap:99 telephone-event/16000 a=rtpmap:100 telephone-event/8000 a=sendonly a=rtcp-fb:* ccm tmmbr