| Name | Type | Description | Notes |
|---|---|---|---|
| digits | String | DTMF digits to send. Valid digits are 0-9, A-D, *, and #. Pauses can be added using w (0.5s) and W (1s). | |
| durationMillis | Integer | Specifies for how many milliseconds each digit will be played in the audio stream. Ranges from 100 to 500ms | [optional] |
| clientState | String | Use this field to add state to every subsequent webhook. It must be a valid Base-64 encoded string. | [optional] |
| commandId | String | Use this field to avoid duplicate commands. Telnyx will ignore any command with the same `command_id` for the same `call_control_id`. | [optional] |