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The dtmf verb generates a string of DTMF digit signals, which are transmitted as RTP payloads according to RFC 2833.

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


The full set of configuration parameters:

Parameter Description Required
dtmf A string containing a sequence of DTMF digits (0-9, *, #). Yes
duration The length of each digit in milliseconds. The default value is 500. No