diff --git a/src/channel.cpp b/src/channel.cpp
index a7228826..b82ba886 100755
--- a/src/channel.cpp
+++ b/src/channel.cpp
@@ -109,6 +109,10 @@ qRegisterMetaType<CHostAddress> ( "CHostAddress" );
         SIGNAL ( LicenceRequired ( ELicenceType ) ),
         SIGNAL ( LicenceRequired ( ELicenceType ) ) );
 
+    QObject::connect ( &Protocol,
+        SIGNAL ( VersionAndOSReceived ( COSUtil::EOpSystemType, QString ) ),
+        SIGNAL ( VersionAndOSReceived ( COSUtil::EOpSystemType, QString ) ) );
+
     QObject::connect ( &Protocol,
         SIGNAL ( ReqChannelLevelList ( bool ) ),
         this, SLOT ( OnReqChannelLevelList ( bool ) ) );
diff --git a/src/channel.h b/src/channel.h
index 19506454..0db2095c 100755
--- a/src/channel.h
+++ b/src/channel.h
@@ -281,6 +281,7 @@ signals:
     void ChatTextReceived ( QString strChatText );
     void ReqNetTranspProps();
     void LicenceRequired ( ELicenceType eLicenceType );
+    void VersionAndOSReceived ( COSUtil::EOpSystemType eOSType, QString strVersion );
     void Disconnected();
 
     void DetectedCLMessage ( CVector<uint8_t> vecbyMesBodyData,
diff --git a/src/client.cpp b/src/client.cpp
index ec3c2cf2..0bf877e8 100755
--- a/src/client.cpp
+++ b/src/client.cpp
@@ -160,6 +160,10 @@ CClient::CClient ( const quint16  iPortNumber,
         SIGNAL ( LicenceRequired ( ELicenceType ) ),
         SIGNAL ( LicenceRequired ( ELicenceType ) ) );
 
+    QObject::connect ( &Channel,
+        SIGNAL ( VersionAndOSReceived ( COSUtil::EOpSystemType, QString ) ),
+        SIGNAL ( VersionAndOSReceived ( COSUtil::EOpSystemType, QString ) ) );
+
     QObject::connect ( &ConnLessProtocol,
         SIGNAL ( CLMessReadyForSending ( CHostAddress, CVector<uint8_t> ) ),
         this, SLOT ( OnSendCLProtMessage ( CHostAddress, CVector<uint8_t> ) ) );
diff --git a/src/client.h b/src/client.h
index b019e2ef..385f931c 100755
--- a/src/client.h
+++ b/src/client.h
@@ -422,6 +422,7 @@ signals:
     void ConClientListMesReceived ( CVector<CChannelInfo> vecChanInfo );
     void ChatTextReceived ( QString strChatText );
     void LicenceRequired ( ELicenceType eLicenceType );
+    void VersionAndOSReceived ( COSUtil::EOpSystemType eOSType, QString strVersion );
     void PingTimeReceived ( int iPingTime );
 
     void CLServerListReceived ( CHostAddress         InetAddr,
diff --git a/src/clientdlg.cpp b/src/clientdlg.cpp
index b5640479..7025f100 100755
--- a/src/clientdlg.cpp
+++ b/src/clientdlg.cpp
@@ -498,6 +498,10 @@ CClientDlg::CClientDlg ( CClient*        pNCliP,
         SIGNAL ( CLChannelLevelListReceived ( CHostAddress, CVector<uint16_t> ) ),
         this, SLOT ( OnCLChannelLevelListReceived ( CHostAddress, CVector<uint16_t> ) ) );
 
+    QObject::connect ( pClient,
+        SIGNAL ( VersionAndOSReceived ( COSUtil::EOpSystemType, QString ) ),
+        this, SLOT ( OnVersionAndOSReceived ( COSUtil::EOpSystemType, QString ) ) );
+
 #ifdef ENABLE_CLIENT_VERSION_AND_OS_DEBUGGING
     QObject::connect ( pClient,
         SIGNAL ( CLVersionAndOSReceived ( CHostAddress, COSUtil::EOpSystemType, QString ) ),
@@ -747,6 +751,19 @@ void CClientDlg::OnCentralServerAddressTypeChanged()
 
         ConnectDlg.RequestServerList();
     }
+}
+
+void CClientDlg::OnVersionAndOSReceived ( COSUtil::EOpSystemType eOSType,
+                                          QString                strVersion )
+{
+
+
+// TODO the implementation of: check for version number if Pan is supported -> enable Pan controls in mixer board if version is sufficient
+// TEST
+qDebug() << strVersion;
+
+
+
 }
 
 void CClientDlg::OnChatTextReceived ( QString strChatText )
diff --git a/src/clientdlg.h b/src/clientdlg.h
index 5af19cb3..4f2b56cb 100755
--- a/src/clientdlg.h
+++ b/src/clientdlg.h
@@ -131,6 +131,9 @@ public slots:
                                     const int iValue ) { MainMixerBoard->SetFaderLevel ( iChannelIdx,
                                                                                          iValue ); }
 
+    void OnVersionAndOSReceived ( COSUtil::EOpSystemType eOSType,
+                                  QString                strVersion );
+
 #ifdef ENABLE_CLIENT_VERSION_AND_OS_DEBUGGING
     void OnCLVersionAndOSReceived ( CHostAddress           InetAddr,
                                     COSUtil::EOpSystemType eOSType,
diff --git a/src/server.cpp b/src/server.cpp
index 38955a82..a514f2da 100755
--- a/src/server.cpp
+++ b/src/server.cpp
@@ -1213,7 +1213,7 @@ void CServer::ProcessData ( const CVector<CVector<int16_t> >& vecvecsData,
                     for ( i = 0; i < ( 2 * iServerFrameSizeSamples ); i++ )
                     {
                         // get the correct pan value for the current channel (left or right)
-                        double pan = ( i % 2 == 0 ) ? dPanCoefL : dPanCoefR;
+                        const double pan = ( i % 2 == 0 ) ? dPanCoefL : dPanCoefR;
 
                         vecsOutData[i] = Double2Short (
                             vecsOutData[i] + vecsData[i] * dGain * pan );