[SOLVED] Connecting Dialogflow ES and Call Lists in Voximplant

Connecting Dialogflow ES and Call Lists in Voximplant

I'm trying to connect my DialogFlow agent with the Call list feature in Voximplant and have been unable to do so.

I wondered if anayone could help me?

The error I am getting is: JS error: number is undefined in /application.js:427:7

This is a link to the full log for the failed call: https://storage-gw-gb-01.voximplant.com/voxdata-gb-logs/2022/08/07/Yzc5OWFlNTJjNTEwOTNkMDgwYTMxMGVjMGE2MTk1MTEvaHR0cDovL3d3dy1mci0wNS0yMTEudm94aW1wbGFudC5jb206ODA4MC9sb2dzLzIwMjIvMDgvMDcvMTEyNTM1X0JBNDA3QkQ4NzUwMjYzODguMTY1OTg3MTUzNS4zMzU4NTIzXzE1Mi4yMjguMjQ3LjIxMS5sb2c-?sessionid=476447299&session_id=6c48e685feee43ada193b016aa7d31e7&account_id=4910907

Here is the scenario code I am using:

require(Modules.CallList);
require(Modules.AI)

let dialogflow, call, hangup

var CALLER_ID = "441618022716"
let number;
let phone_number


// Create outbound call as soon as StartScenarios HTTP API arrives
VoxEngine.addEventListener(AppEvents.Started, function (e) {
    let data = VoxEngine.customData(); // <-- data from CSV string in JSON format
    data = JSON.parse(data);
     phone_number = data.phone_number;
     call = VoxEngine.callPSTN(phone_number, CALLER_ID) // replace CALLER_ID with the number we bought in previous step (the real one, test number does not work)
     call.addEventListener(CallEvents.Connected, onCallConnected)
     call.addEventListener(CallEvents.Disconnected, VoxEngine.terminate)
     call.addEventListener(CallEvents.Failed, VoxEngine.terminate)
})

function onCallConnected(e) {
  // Create Dialogflow object
    dialogflow = AI.createDialogflow({
      lang: DialogflowLanguage.ENGLISH_US
    })
    dialogflow.addEventListener(AI.Events.DialogflowResponse, onDialogflowResponse)
    // Sending WELCOME event to let the agent says a welcome message
    dialogflow.sendQuery({event : {name: "WELCOME", language_code:"en"}})
    // Playback marker used for better user experience
    dialogflow.addMarker(-300)
    // Start sending media from Dialogflow to the call
    dialogflow.sendMediaTo(call)
    dialogflow.addEventListener(AI.Events.DialogflowPlaybackFinished, (e) => {
      // Dialogflow TTS playback finished. Hangup the call if hangup flag was set to true
      if (hangup) call.hangup()
    })
    dialogflow.addEventListener(AI.Events.DialogflowPlaybackStarted, (e) => {
      // Dialogflow TTS playback started
    })
    dialogflow.addEventListener(AI.Events.DialogflowPlaybackMarkerReached, (e) => {
      // Playback marker reached - start sending audio from the call to Dialogflow
      call.sendMediaTo(dialogflow)
    })
}

// Handle Dialogflow responses
function onDialogflowResponse(e) {
  // If DialogflowResponse with queryResult received - the call stops sending media to Dialogflow
  // in case of response with queryResult but without responseId we can continue sending media to dialogflow
  if (e.response.queryResult !== undefined && e.response.responseId === undefined) {
    call.sendMediaTo(dialogflow)
  } else if (e.response.queryResult !== undefined && e.response.responseId !== undefined) {
    // Do whatever required with e.response.queryResult or e.response.webhookStatus
        // If we need to hangup because end of conversation has been reached
        if (e.response.queryResult.diagnosticInfo !== undefined && 
           e.response.queryResult.diagnosticInfo.end_conversation == true) {
           hangup = true
        }

// Telephony messages arrive in fulfillmentMessages array
    if (e.response.queryResult.fulfillmentMessages != undefined) {
        e.response.queryResult.fulfillmentMessages.forEach((msg) => {
            if (msg.platform !== undefined && msg.platform === "TELEPHONY") processTelephonyMessage(msg)
        })
    }
  }
}

// Process telephony messages from Dialogflow
function processTelephonyMessage(msg) {
  // Transfer call to msg.telephonyTransferCall.phoneNumber
  if (msg.telephonyTransferCall !== undefined) {
    /**
    * Example:
    * dialogflow.stop()
    * let newcall = VoxEngine.callPSTN(msg.telephonyTransferCall.phoneNumber, "put verified CALLER_ID here")
    * VoxEngine.easyProcess(call, newcall)
    */
  }
  // Synthesize speech from msg.telephonySynthesizeSpeech.text
  if (msg.telephonySynthesizeSpeech !== undefined) {
    // See the list of available TTS languages at https://voximplant.com/docs/references/voxengine/language
    // Example: 
    // if (msg.telephonySynthesizeSpeech.ssml !== undefined) call.say(msg.telephonySynthesizeSpeech.ssml, {"language": VoiceList.Amazon.en_US_Joanna})
    // else call.say(msg.telephonySynthesizeSpeech.text, {"language": VoiceList.Amazon.en_US_Joanna})
  }
  // Play audio file located at msg.telephonyPlayAudio.audioUri
  if (msg.telephonyPlayAudio !== undefined) {
    // audioUri contains Google Storage URI (gs://), we need to transform it to URL (https://)
    let url = msg.telephonyPlayAudio.audioUri.replace("gs://", "https://storage.googleapis.com/")
    // Example: call.startPlayback(url)
  }
}

Solution

The issue occurs because scenario can't find field named phone_number in custom data passed into it. Most likely this is caused by incorrect delimiter used in CSV file that was uploaded as a call list. You can try using semicolon instead of comma - that should help.