<script src="https://swx.cdn.skype.com/shared/v/1.2.15/SkypeBootstrap.min.js"></script>

<script>
var config = {
  apiKey: '595a1aeb-e6dc-4e5b-be96-bb38adc83da1', // SDK
  apiKeyCC: '08c97289-7d57-404f-bd97-a6047403e370' // SDK+UI
};

Skype.initialize({ apiKey: config.apiKey },
  function (api)
  {
    Application = api.application; // this is the Application constructor
    app = new Application;
    app.signInManager.signIn ({
      username: 'voxiweb.test1',
      password: 'voxiwebtest1'
    }).then(() => {
      console.log("signed in as", app.personsAndGroupsManager.mePerson.displayName());
    }, err => {
      console.log("cannot sign in :", err);
    });
  },
  function (err)
  {
    console.log("cannot load the sdk package", err);
  }
);

</script>