inbound.js

var http = require('http'),
    twilio = require('twilio');

http.createServer(function (req, res) {
    //Create TwiML response
    var twiml = new twilio.TwimlResponse();
    twiml.record();

    res.writeHead(200, {'Content-Type': 'text/xml'});
    res.end(twiml.toString());

}).listen(1337, '127.0.0.1');

console.log('TwiML servin\' server running at http://127.0.0.1:1337/');

outbound.js

//require the Twilio module and create a REST client
var client = require('twilio')('ACCOUNT_SID', 'AUTH_TOKEN');

//Place a phone call, and respond with TwiML instructions from the given URL
client.makeCall({

    to:'+16515556677', // Number you want to call first
    from: '+14506667788', // Number you want to call second
    url: 'http://[INSERT URL TO SERVER ABOVE]', // This will connect over the public Internet to the server above.
    ifMachine: true

}, function(err, responseData) {

    //executed when the call has been initiated.
    console.log(responseData.from); // outputs "+14506667788"

});