Objective

The following sample code below shows the basic Node.js syntax of <Dial><WhatsApp>. 

Procedure 

This is helpful in case you need to make a WhatsApp Call from a Twilio Function: 

const VoiceResponse = require('twilio').twiml.VoiceResponse;


const response = new VoiceResponse();
const dial = response.dial({
    callerId: 'whatsapp:+558551234567'
});
dial.whatsApp('+15558675310');

console.log(response.toString()); 

Additional Information 

Further details about WhatsApp Voice Call can be found in the following document: TwiML™ Voice: <WhatsApp>