How FreeSWITCH support RTCP TMMBR

FreeSWITCH
1

Hi,
I found the FreeSWITCH source code contain some TMMBR., How does FreeSWITCH support it?
generate/modify or just passthrough?

If yes, Any idea how to enable and use it?

freeswitch/src/switch_rtp.c at 739e770c343db50a360f752a461da176c8a455ad · signalwire/freeswitch · GitHub
if (rtp_session->tmmbr) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG2, “Sending RTCP TMMBR %u\n”, rtp_session->tmmbr);
ext_hdr->fmt = _RTCP_RTPFB_TMMBR;
bps = rtp_session->tmmbr;
rtp_session->tmmbr = 0;

2

Conference Flag: manage-inbound-video-bitrate
If calling client supports TMMBR, on each change of layout position FreeSWITCH will instruct the client to increase/reduce the video bit rate appropriately.

3

Thanks for your help, TMMBR only support for video? is it applicable for audio?