How to implement Answering Machine detection using Twiml or twilio JSClient

Question

We are building an in-browser messenger app using Twilio, From JS client we make a call and use Twiml to dial the number, This is our basic flow. I understand from other Questions that AMD is only available for RestAPI, How can I utilise Rest API along with JS client, or How can I Integrate AMD with my current setup. any help/suggestions Please :) . Thanks in advance

question from:https://stackoverflow.com/questions/65913444/how-to-implement-answering-machine-detection-using-twiml-or-twilio-jsclient

Answer 1

Yes as far as I know you can't use TwiML to turn on the answer machine detection and you are restricted to using the API.

The API endpoint you want to use is the Call Resource. This is in essence not nothing more than a POST to https://api.twilio.com/2010-04-01/Accounts/{AccountSid}/Calls.json and then you set the parameter MachineDetection to Enable (please refer to the docs here).

But this needs authentication in form of your TWILIO_AUTH_TOKEN which you can't expose to any client. I don't know the details of your JS client and how you do authentication & authorisation but I'd suggest you encapsulate the logic in your backend where you can properly secure it. Then you can also use the Twilio helper libraries, e.g. for Python or Node.JS, to place the call (example for Node.JS taken from the docs and adapted):

const accountSid = process.env.TWILIO_ACCOUNT_SID;
const authToken = process.env.TWILIO_AUTH_TOKEN;
const client = require('twilio')(accountSid, authToken);

client.calls
  .create({
     twiml: '<Response><Say>Hello World!</Say></Response>',
     to: '+1...',
     from: '+1...',
     machineDetection: 'Enable'
   })
  .then(call => console.log(call.sid));