public static void AddDefaultIceServersList(WebRtcAdapter.Call.Call call)
        {
            if (_localSettings.DeserializeIceServersList() == null ||
                !(_localSettings.DeserializeIceServersList()).Any())
            {
                List <IceServer> iceServersList = new List <IceServer>();

                ObservableCollection <IceServerModel> iceServerModelList = new ObservableCollection <IceServerModel>();

                foreach (IceServer iceServer in AddDefaultIceServers)
                {
                    IceServerModel iceServerModel = new IceServerModel();
                    iceServerModel.Urls       = iceServer.Urls;
                    iceServerModel.Username   = iceServer.Username;
                    iceServerModel.Credential = iceServer.Credential;

                    iceServerModelList.Add(iceServerModel);
                }

                _localSettings.SerializeIceServersList(iceServerModelList);

                foreach (var ice in iceServerModelList)
                {
                    IceServer iceServer = new IceServer();
                    iceServer.Urls       = ice.Urls;
                    iceServer.Username   = ice.Username;
                    iceServer.Credential = ice.Credential;

                    iceServersList.Add(iceServer);
                }

                call.AddIceServers(iceServersList);
                call.SetIceServers(iceServersList);
            }
            else
            {
                List <IceServer> iceServersList = new List <IceServer>();

                ObservableCollection <IceServerModel> iceServerModelList = _localSettings.DeserializeIceServersList();

                foreach (var ice in iceServerModelList)
                {
                    IceServer iceServer = new IceServer();
                    iceServer.Urls       = ice.Urls;
                    iceServer.Username   = ice.Username;
                    iceServer.Credential = ice.Credential;

                    iceServersList.Add(iceServer);
                }

                call.AddIceServers(iceServersList);
                call.SetIceServers(iceServersList);
            }
        }
 /// <summary>
 /// See Page.OnNavigatedTo()
 /// </summary>
 /// <param name="e"></param>
 protected override void OnNavigatedTo(NavigationEventArgs e)
 {
     _call = (WebRtcAdapter.Call.Call)e.Parameter;
 }