node.js - Twilio how to make two outbound calls and join(conference) them using node js

Question

I have to make two outbound calls to two random mobile numbers and join both of them in conference using node.js. Is there a way to make it possible using twilio and node.js.

Answer 1

Twilio developer evangelist here.

You say you are getting two numbers provided to you and you need to make calls to both of them, joining them up in a conference. You can use the REST API to make the calls and here's a basic example of a function that would create those calls using the Node.js Twilio module:

const accountSid = 'your_account_sid';
const authToken = 'your_auth_token';
const client = require('twilio')(accountSid, authToken);

function connectNumbers(number1, number2) {
  [number1, number2].forEach(function(number) {
    client.calls.create({
      url: 'https://example.com/conference',
      to: number,
      from: 'YOUR_TWILIO_NUMBER',
    })
    .then((call) => process.stdout.write(`Called ${number}`));
  })
}

When the calls connect, Twilio will make an HTTP request to the URL supplied.

You would then need a server application on your own URL (in place of example.com in the function above) that could return the TwiML to set up the conference.

<Response>
  <Dial>
    <Conference>Room Name</Conference>
  </Dial>
</Response>

[edit]

If you want to play a message before users join the conference, you just need to use the <Say> TwiML verb before you <Dial>. Like this:

<Response>
  <Say voice="alice">This is a call from xyz.org</Say>
  <Dial>
    <Conference>Room Name</Conference>
  </Dial>
</Response>

Let me know if that helps at all.