Config

The config verb allows developers to change the default speech settings during a session or to collect speech or DTMF input in the background while other verbs run. This verb is non-blocking, so the specified settings are changed immediately and the application proceeds with the next verb.

{
  "verb": "config",
  "synthesizer": {
    "vendor": "microsoft",
    "language": "de-DE",
    "voice": "de-DE-KillianNeural"
  },
  "recognizer": {
    "vendor": "google",
    "language": "de-DE"
  },
  "bargeIn": {
    "enable": true,
    "input": [
      "speech"
    ],
    "actionHook": "/userInput"
  }
}

Configuration

The full set of configuration parameters:

Parameter	Description	Required
amd	Enable the Answering Machine Detection (AMD).	No
bargein	A background gather verb.	No
bargeIn.enable	If true, begins listening for speech or DTMF input while the session executes other verbs. If false, stops any background listening task in progress.	No
bargeIn.sticky	If both bargeIn.enable and bargeIn.sticky are true, another background gather will automatically initiate after detecting speech or DTMF.	No
bargeIn.actionHook	A webhook to call if the user input is collected from the background gather. Default is voice	No
bargeIn.input	An array specifying the allowed types of input: ['digits'], ['speech'], or ['digits', 'speech'].	Yes
bargeIn.finishOnKey	The DTMF key that signals the end of DTMF input.	No
bargeIn.numDigits	The exact number of DTMF digits expected to gather.	No
bargeIn.minDigits	The minimum number of DTMF digits expected to gather. The default value is 1.	No
bargeIn.maxDigits	The maximum number of DTMF digits expected to gather.	No
bargeIn.interDigitTimeout	The amount of time to wait between digits after minDigits have been entered.	No
boostAudioSignal	A string or integer value specifying the number of decibels to increase or decrease the outgoing audio signal level, for example, -6 dB. Note that this parameter applies only to the main audio track, not to any additional (dub) audio tracks. The default value is 0.	No
listen	A nested listen verb.	No
notifyEvents	A boolean parameter. Enables event notifications over WebSocket connections. verbs sent over WebSocket must contain an id property to use this feature.	No
onHoldMusic	The URL to a remote music source to use when a call is placed on hold.	No
recognizer	Change the session-level default speech recognition settings. See the transcribe verb for details on the recognizer property.	No
reset	A string or array. Resets either recognizer or synthesizer to the default application settings.	No
record	Options to manage call recording using SIPREC.	No
record.action	On of the following actions can be used: startCallRecording, stopCallRecording, pauseCallRecording, or resumeCallRecording.	Yes
record.siprecServerURL	The SIP URI for the SIPREC server.	Required if action is startCallRecording
record.recordingID	The user-supplied string to identify the recording.	No
sipRequestWithinDialogHook	An object or string. A webhook to call when a SIP request is received within the dialog. For example: INFO, NOTIFY, or REFER.	No
synthesizer	Change the session-level default text-to-speech settings. See the say verb for details on the synthesizer property.	No

More Information

• Listen
• Gather