diff --git a/src/components/settings/AccountSettingsModel.cpp b/src/components/settings/AccountSettingsModel.cpp
index 869e128da..ee3e42ec6 100644
--- a/src/components/settings/AccountSettingsModel.cpp
+++ b/src/components/settings/AccountSettingsModel.cpp
@@ -117,21 +117,21 @@ QVariantMap AccountSettingsModel::getProxyConfigDescription (const shared_ptr<li
   {
     const shared_ptr<const linphone::Address> address = proxyConfig->getIdentityAddress();
     map["sipAddress"] = address
-      ? Utils::coreStringToAppString(proxyConfig->getIdentityAddress()->asString())
+      ? QString::fromStdString(proxyConfig->getIdentityAddress()->asString())
       : QString("");
   }
-  map["serverAddress"] = Utils::coreStringToAppString(proxyConfig->getServerAddr());
+  map["serverAddress"] = QString::fromStdString(proxyConfig->getServerAddr());
   map["registrationDuration"] = proxyConfig->getPublishExpires();
-  QString transport = QString::fromStdString(proxyConfig->getTransport());
-  if(transport == "")
-      map["transport"] = "tls";// Set to TLS by default
-  else
-      map["transport"] = transport;
+
+  if( map["serverAddress"].toString().toUpper().contains("TRANSPORT="))// transport has been specified : let the RFC select the transport
+        map["transport"] = QString::fromStdString(proxyConfig->getTransport());
+  else// Set to TLS as default
+      map["transport"] = "tls";
   if( proxyConfig->getRoutes().size() > 0)
-    map["route"] = Utils::coreStringToAppString(proxyConfig->getRoutes().front());
+    map["route"] = QString::fromStdString(proxyConfig->getRoutes().front());
   else
     map["route"] = "";
-  map["contactParams"] = Utils::coreStringToAppString(proxyConfig->getContactParameters());
+  map["contactParams"] = QString::fromStdString(proxyConfig->getContactParameters());
   map["avpfInterval"] = proxyConfig->getAvpfRrInterval();
   map["registerEnabled"] = proxyConfig->registerEnabled();
   map["publishPresence"] = proxyConfig->publishEnabled();
diff --git a/src/components/sip-addresses/SipAddressesModel.cpp b/src/components/sip-addresses/SipAddressesModel.cpp
index 78ef2d5ca..b01052e57 100644
--- a/src/components/sip-addresses/SipAddressesModel.cpp
+++ b/src/components/sip-addresses/SipAddressesModel.cpp
@@ -144,23 +144,26 @@ SipAddressObserver *SipAddressesModel::getSipAddressObserver (const QString &pee
 // -----------------------------------------------------------------------------
 
 QString SipAddressesModel::getTransportFromSipAddress (const QString &sipAddress) {
-  const shared_ptr<const linphone::Address> address = linphone::Factory::get()->createAddress(
-    Utils::appStringToCoreString(sipAddress)
-  );
+    if( sipAddress.toUpper().contains("TRANSPORT="))
+    {// Transport has been specified : check for it
+      const shared_ptr<const linphone::Address> address = linphone::Factory::get()->createAddress(
+        Utils::appStringToCoreString(sipAddress)
+      );
 
-  if (!address)
-    return QString("TLS");  // Return TLS by default
+      if (!address)
+        return QString("TLS");  // Return TLS by default
 
-  switch (address->getTransport()) {
-    case linphone::TransportType::Udp:
-      return QStringLiteral("UDP");
-    case linphone::TransportType::Tcp:
-      return QStringLiteral("TCP");
-    case linphone::TransportType::Tls:
-      return QStringLiteral("TLS");
-    case linphone::TransportType::Dtls:
-      return QStringLiteral("DTLS");
-  }
+      switch (address->getTransport()) {
+        case linphone::TransportType::Udp:
+          return QStringLiteral("UDP");
+        case linphone::TransportType::Tcp:
+          return QStringLiteral("TCP");
+        case linphone::TransportType::Tls:
+          return QStringLiteral("TLS");
+        case linphone::TransportType::Dtls:
+          return QStringLiteral("DTLS");
+      }
+    }
 
   return QString("TLS");
 }