The dtmf verb generates a string of dtmf digit signals. These are sent as RTP payloads using RFC 3822.

  "verb": "dtmf",
  "dtmf": "0276",
  "duration": 250

You can use the following options in the dtmf action:

option description required
dtmf a string containing a sequence of dtmf digits (0-9,*,#) yes
duration the length of each digit, in milliseconds, Defaults to 500 no

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