Hi, We are facing an issue with a=fmtp:18 annexb=no. Here is the call flow, Cisco CUCM -> Cisco Cube -> FS Cisco is expecting in 200 OK , m=audio 28820 RTP/AVP 18 101 13 a=rtpmap:18 G729/8000 * a=fmtp:18 annexb=no* a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=ptime:20 But fs is generating without *a=fmtp:18 annexb=no* m=audio 28820 RTP/AVP 18 101 13 a=rtpmap:18 G729/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=ptime:20 Because of that calls are getting fail. I am not getting where should we change setting to include that line. Log, http://pastebin.com/LDHEmCNv Please help me to resolve that issue. Thanks in advance. ----- Thanks, Sam -- View this message in context: http://freeswitch-users.2379917.n2.nabble.com/Issue-with-a-fmtp-18-annexb-no... Sent from the freeswitch-users mailing list archive at Nabble.com.