anchor.diff:  
     function hangup() {
       Twilio.Device.disconnectAll();
  -    $("#to").text();
  -    $("#from").text();
  +    $("#to").empty();
  +    $("#from").empty();
     }
   
     function accept() {
  
positive.code:   
    Twilio.Device.disconnect(function (conn) {
      $("#log").text("Call ended");
      $("#to").text();
      $("#from").text();
    });
  
    Twilio.Device.incoming(function (conn) {
  
negative.code:     $("#log").text("Connection rejected");
      $("#hangup-btn").text("Hangup");
      $("#hangup-btn").attr("onclick","hangup()");
      $("#to").empty();
      $("#from").empty();
    }
  
    function mute() {
  