webphone.html

<script src="https://phone.sipgate.com/static/js/webphone.js"></script>
<div id='sipgate-webphone-container' style="height: 550px; width: 400px;"></div>
<script>
  var webphone = new SipgateWebphone();
  webphone.init({
    container: document.getElementById('sipgate-webphone-container'),
    clientId: 'CLIENT_ID'
  });
</script>