dtmf verb generates a string of DTMF digit signals, which are transmitted as RTP payloads according to RFC 2833.
Configuration
The following table lists the available parameters:| Parameter | Type | Description | Required |
|---|---|---|---|
| dtmf | string | A string containing a sequence of DTMF digits (0-9, *, #). | Yes |
| duration | number | The length of each digit in milliseconds. The default value is 500. | No |