[Freeswitch-users] rtcp-mux on B-leg but there is no signaling in SDP

Hi list, FreeSWITCH 1.6.9 and the default configurations: FreeSWITHCH is using rtcp-mux on the B-leg without signalling in SDP (i.e. no rtcp-mux attribute). If I change rtcp_audio_interval_msec to passthru or say 2000 then there is explicit rtcp-mux in the INVITE SDP. The UAC I'm using, sends a few packets to RTP+1, FreeSWITCH sends RTCP with source port the same as RTP, and the UAC auto-adjusts after 10 or so packets. This UAC always includes an a=rtcp line even if the RTCP port is RTP+1. Is this a "bug"? I would expect FreeSWITCH to signal rtcp-mux on the B-leg. (On the A-leg, FreeSWITCH doesn't use rtcp-mux and includes an explicit rtcp port in SDP). -- Richard Chan