private void LogIn_Click(object sender, RoutedEventArgs e)
        {
            ErrorMessage.Text = "";
            if (Username.Text.Length > 0 && Domain.Text.Length > 0)
            {
                LogIn.IsEnabled = false;
                Register.IsEnabled = false;
                LinphoneLogIn.IsEnabled = false;
                Loading.Visibility = Visibility.Visible;
                Username.IsEnabled = false;
                Password.IsEnabled = false;
                Domain.IsEnabled = false;

                NetworkSettingsManager networkSettings = new NetworkSettingsManager();
                _settings.Username = Username.Text;
                _settings.Password = Password.Password;
                _settings.Domain = Domain.Text;
                if (Domain.Text.Equals("sip.linphone.org"))
                {
                    _settings.Proxy = "<sip:sip.linphone.org:5223;transport=tls>";
                    _settings.Transport = AppResources.TransportTLS;
                    _settings.OutboundProxy = true;

                    networkSettings.StunServer = "stun.linphone.org";
                    networkSettings.FWPolicy = AppResources.FirewallPolicyIce;
                }
                networkSettings.Save();
                _settings.Save();

                NavigationService.Navigate(new Uri("/Views/Dialer.xaml", UriKind.RelativeOrAbsolute));
                NavigationService.RemoveBackEntry(); // Prevent a back to this screen from the dialer
            }
            else
            {
                ErrorMessage.Text = AppResources.ErrorLogin;
            }
        }
        private void Save()
        {
            if (Domain.Text.Contains(":"))
            {
                if (Proxy.Text.Length == 0)
                {
                    Proxy.Text = Domain.Text;
                }
                Domain.Text = Domain.Text.Split(':')[0];
            }

            _settings.Username = Username.Text;
            _settings.UserId = UserId.Text;
            _settings.Password = Password.Password;
            _settings.Domain = Domain.Text;
            _settings.Proxy = Proxy.Text;
            _settings.OutboundProxy = OutboundProxy.IsChecked;
            _settings.DisplayName = DisplayName.Text;
            _settings.Transport = Transport.SelectedItem.ToString();
            _settings.Expires = Expires.Text;
            _settings.AVPF = AVPF.IsChecked;
            _settings.Save();

            if (linphoneAccount)
            {
                NetworkSettingsManager networkSettings = new NetworkSettingsManager();
                networkSettings.Load();
                networkSettings.MEncryption = networkSettings.EnumToMediaEncryption[MediaEncryption.SRTP];
                networkSettings.FWPolicy = networkSettings.EnumToFirewallPolicy[FirewallPolicy.UseIce];
                networkSettings.StunServer = "stun.linphone.org";
                networkSettings.Save();
            }
        }
 /// <summary>
 /// Configures the Tunnel using the current setting value
 /// </summary>
 public void ConfigureTunnel()
 {
     NetworkSettingsManager settings = new NetworkSettingsManager();
     settings.Load();
     ConfigureTunnel(settings.TunnelMode);
 }