diff --git a/linphone-desktop/CMakeLists.txt b/linphone-desktop/CMakeLists.txt
index 8a5870d10..4671fb0b2 100644
--- a/linphone-desktop/CMakeLists.txt
+++ b/linphone-desktop/CMakeLists.txt
@@ -106,6 +106,7 @@ set(SOURCES
   src/components/codecs/AbstractCodecsModel.cpp
   src/components/codecs/AudioCodecsModel.cpp
   src/components/codecs/VideoCodecsModel.cpp
+  src/components/conference/ConferenceHelperModel.cpp
   src/components/contact/ContactModel.cpp
   src/components/contact/VcardModel.cpp
   src/components/contacts/ContactsListModel.cpp
@@ -147,6 +148,7 @@ set(HEADERS
   src/components/codecs/AudioCodecsModel.hpp
   src/components/codecs/VideoCodecsModel.hpp
   src/components/Components.hpp
+  src/components/conference/ConferenceHelperModel.hpp
   src/components/contact/ContactModel.hpp
   src/components/contact/VcardModel.hpp
   src/components/contacts/ContactsListModel.hpp
diff --git a/linphone-desktop/src/app/App.cpp b/linphone-desktop/src/app/App.cpp
index c524be446..392099e19 100644
--- a/linphone-desktop/src/app/App.cpp
+++ b/linphone-desktop/src/app/App.cpp
@@ -343,6 +343,7 @@ void App::registerTypes () {
   registerType<CameraPreview>("CameraPreview");
   registerType<ChatModel>("ChatModel");
   registerType<ChatProxyModel>("ChatProxyModel");
+  registerType<ConferenceHelperModel>("ConferenceHelperModel");
   registerType<ContactsListProxyModel>("ContactsListProxyModel");
   registerType<SmartSearchBarModel>("SmartSearchBarModel");
   registerType<SoundPlayer>("SoundPlayer");
diff --git a/linphone-desktop/src/components/Components.hpp b/linphone-desktop/src/components/Components.hpp
index a3eb68289..58d91f880 100644
--- a/linphone-desktop/src/components/Components.hpp
+++ b/linphone-desktop/src/components/Components.hpp
@@ -31,6 +31,7 @@
 #include "chat/ChatProxyModel.hpp"
 #include "codecs/AudioCodecsModel.hpp"
 #include "codecs/VideoCodecsModel.hpp"
+#include "conference/ConferenceHelperModel.hpp"
 #include "contacts/ContactsListProxyModel.hpp"
 #include "core/CoreManager.hpp"
 #include "presence/OwnPresenceModel.hpp"
diff --git a/linphone-desktop/src/components/conference/ConferenceHelperModel.cpp b/linphone-desktop/src/components/conference/ConferenceHelperModel.cpp
new file mode 100644
index 000000000..9c2ad7cea
--- /dev/null
+++ b/linphone-desktop/src/components/conference/ConferenceHelperModel.cpp
@@ -0,0 +1,48 @@
+/*
+ * ConferenceHelperModel.cpp
+ * Copyright (C) 2017  Belledonne Communications, Grenoble, France
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ *  Created on: May 11, 2017
+ *      Author: Ronan Abhamon
+ */
+
+#include "../../Utils.hpp"
+#include "../core/CoreManager.hpp"
+
+#include "ConferenceHelperModel.hpp"
+
+// =============================================================================
+
+ConferenceHelperModel::ConferenceHelperModel (QObject *parent) : QSortFilterProxyModel(parent) {
+  setSourceModel(CoreManager::getInstance()->getSipAddressesModel());
+
+  for (const auto &participant : CoreManager::getInstance()->getCore()->getConference()->getParticipants())
+    mInConference << ::Utils::linphoneStringToQString(participant->asStringUriOnly());
+}
+
+QHash<int, QByteArray> ConferenceHelperModel::roleNames () const {
+  QHash<int, QByteArray> roles;
+  roles[Qt::DisplayRole] = "$sipAddress";
+  return roles;
+}
+
+bool ConferenceHelperModel::filterAcceptsRow (int sourceRow, const QModelIndex &sourceParent) const {
+  const QModelIndex &index = sourceModel()->index(sourceRow, 0, sourceParent);
+  const QVariantMap &data = index.data().toMap();
+
+  return !mInConference.contains(data["sipAddress"].toString());
+}
diff --git a/linphone-desktop/src/components/conference/ConferenceHelperModel.hpp b/linphone-desktop/src/components/conference/ConferenceHelperModel.hpp
new file mode 100644
index 000000000..337c9dc3a
--- /dev/null
+++ b/linphone-desktop/src/components/conference/ConferenceHelperModel.hpp
@@ -0,0 +1,41 @@
+/*
+ * ConferenceHelperModel.hpp
+ * Copyright (C) 2017  Belledonne Communications, Grenoble, France
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ *  Created on: May 11, 2017
+ *      Author: Ronan Abhamon
+ */
+
+#include <QSortFilterProxyModel>
+
+// =============================================================================
+
+class ConferenceHelperModel : public QSortFilterProxyModel {
+  Q_OBJECT;
+
+public:
+  ConferenceHelperModel (QObject *parent = Q_NULLPTR);
+  ~ConferenceHelperModel () = default;
+
+  QHash<int, QByteArray> roleNames () const override;
+
+protected:
+  bool filterAcceptsRow (int sourceRow, const QModelIndex &sourceParent) const override;
+
+private:
+  QStringList mInConference;
+};