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Send DTMF

POST 
/calls/:call_control_id/actions/send_dtmf

Sends DTMF tones from this leg. DTMF tones will be heard by the other end of the call.

Expected Webhooks:

There are no webhooks associated with this command.

Request​

Path Parameters

    call_control_id stringrequired

    Unique identifier and token for controlling the call

Body

required

Send DTMF request

    digits stringrequired

    DTMF digits to send. Valid digits are 0-9, A-D, *, and #. Pauses can be added using w (0.5s) and W (1s).

    duration_millis int32

    Default value: 250

    Specifies for how many milliseconds each digit will be played in the audio stream. Ranges from 100 to 500ms

    client_state string

    Use this field to add state to every subsequent webhook. It must be a valid Base-64 encoded string.

    command_id string

    Use this field to avoid duplicate commands. Telnyx will ignore any command with the same command_id for the same call_control_id.

Responses​

200: Successful response upon making a call control command.

Schema

    data

    object

    result string

default: Unexpected error

Schema

    errors

    Error[]

  • Array [

    • code integerrequired
    title stringrequired
    detail string

    source

    object

    pointer json-pointer

    JSON pointer (RFC6901) to the offending entity.

    parameter string

    Indicates which query parameter caused the error.

    meta object

  • ]

Request samples

curl -L 'https://api.telnyx.com/v2/calls/:call_control_id/actions/send_dtmf' \
-H 'Content-Type: application/json' \
-H 'Accept: application/json' \
-H 'Authorization: Bearer <TOKEN>' \
-d '{
  "digits": "1www2WABCDw9",
  "duration_millis": 500,
  "client_state": "aGF2ZSBhIG5pY2UgZGF5ID1d",
  "command_id": "891510ac-f3e4-11e8-af5b-de00688a4901"
}'

Response samples

{
  "data": {
    "result": "ok"
  }
}