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Gather using audio

POST 
/calls/:call_control_id/actions/gather_using_audio

Play an audio file on the call until the required DTMF signals are gathered to build interactive menus.

You can pass a list of valid digits along with an 'invalid_audio_url', which will be played back at the beginning of each prompt. Playback will be interrupted when a DTMF signal is received. The Answer command must be issued before the gather_using_audio command.

Expected Webhooks:

  • Playback started
  • Playback ended
  • DTMF
  • Gather ended

Request ​

Path Parameters

    call_control_id stringrequired

    Unique identifier and token for controlling the call

Body

required

    audio_url stringrequired

    The URL of a file to be played back at the beginning of each prompt. The URL can point to either a WAV or MP3 file.

    invalid_audio_url string

    The URL of a file to play when digits don't match the 'valid_digits' parameter or the number of digits is not between 'min' and 'max'. The URL can point to either a WAV or MP3 file.

    min int32

    Default value: 1

    The minimum number of digits to fetch. This parameter has a minimum value of 1.

    max int32

    Default value: 128

    The maximum number of digits to fetch. This parameter has a maximum value of 128.

    tries int32

    Default value: 3

    The maximum number of times that a file should be played back if there is no input from the user on the call.

    timeout int32

    Default value: 60000

    The number of milliseconds to wait for a DTMF response after file playback ends before a replaying the sound file.

    terminating_digit string

    Default value: #

    The digit used to terminate input if fewer than "max" digits have been gathered.

    valid_digits string

    Default value: 0123456789#*

    A list of all digits accepted as valid.

    inter_digit_timeout int32

    Default value: 5000

    The number of milliseconds to wait for input between digits.

    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 commands with the same "command_id".

Responses ​

200: Successful response

Schema

    result stringrequired

422: Error response

Schema

    code stringrequired
    title stringrequired
    detail stringrequired

Request samples

curl -L 'https://api.telnyx.com/calls/:call_control_id/actions/gather_using_audio' \
-H 'Content-Type: application/json' \
-H 'Accept: application/json' \
-d '{
  "audio_url": "http://example.com/message.wav",
  "invalid_audio_url": "http://example.com/invalid.wav",
  "min": 1,
  "max": 10,
  "tries": 3,
  "timeout": 60000,
  "terminating_digit": "#",
  "valid_digits": "123",
  "inter_digit_timeout": 10000,
  "client_state": "aGF2ZSBhIG5pY2UgZGF5ID1d",
  "command_id": "891510ac-f3e4-11e8-af5b-de00688a4901"
}'

Response samples

{
  "result": "ok"
}