title: Is it possible to pass DTMF tones to Twilio Video room participant?
body: <p>We have a video room participant which we need pass DTMF to. We are adding him to video room as described here: <a href="https://www.twilio.com/docs/video/adding-programmable-voice-participants-video-rooms" rel="nofollow noreferrer">https://www.twilio.com/docs/video/adding-programmable-voice-participants-video-rooms</a>. Then we use custom dtmf tone javascript generator and add it's track to room audio tracks. It seems to be working, since we are able to hear tones as other room participants. But that participant can't recognize tones.
  Seems like dtmf isn't working according to this <a href="https://stackoverflow.com/questions/57666508/how-to-detect-touch-tones-dtmf-in-a-twilio-video-room">How to detect Touch-tones (DTMF) in a Twilio video room</a>, but I'm curious haven't this beed fixed?</p>