var RingCentral = require('ringcentral')
var WebPhone = require('ringcentral-web-phone')
var appKey = '...';
var appSecret = '...';
var appName = '...';
var appVersion = '...';

var sdk = new RingCentral({
    appKey: appKey,
    appSecret: appSecret,
    appName: appName,
    appVersion: appVersion,
    server: RingCentral.server.production // or .sandbox
});

var platform = sdk.platform();

platform
    .login({
        username: '...',
        password: '...'
    })
    .then(function(loginResponse) {

        return platform
            .post('/client-info/sip-provision', {
                sipInfo: [{transport: 'WSS'}]
            })
            .then(function(res) {

                return new WebPhone(res.json(), { // optional
                    appKey: appKey,
                    appName: appName,
                    appVersion: appVersion,
                    uuid: loginResponse.json().endpoint_id,
                    logLevel: 1, // error 0, warn 1, log: 2, debug: 3
                    audioHelper: {
                        enabled: true, // enables audio feedback when web phone is ringing or making a call
                        incoming: 'path-to-audio/incoming.ogg', // path to audio file for incoming call
                        outgoing: 'path-to-audio/outgoing.ogg' // path to aduotfile for outgoing call
                    }
                });

            });

    })
    .then(function(webPhone){

        // YOUR CODE HERE

    })
    .catch(function(e){
        console.error(e.stack);
    });