How to detect Touch-tones (DTMF) in a Twilio video room
问题 After following this document I can successfully add PSTN callers to a video room (Small Room type). What I haven't been able to do is to detect DTMF tones from the person calling in. I tried two different approaches, both have failed 1) The one that I used before with a different provider and worked, but not with Twilio, was to have one of the other users in the room (not the PSTN caller but a javascript client) detect the DTMF client-side. This doesn't work with twilio because it sounds to