diff --git a/.gitignore b/.gitignore
index 567609b1..7b22ecfe 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 build/
+/Debug/
diff --git a/src/iec61850/client/ied_connection.c b/src/iec61850/client/ied_connection.c
index d3c6f922..8846fc01 100644
--- a/src/iec61850/client/ied_connection.c
+++ b/src/iec61850/client/ied_connection.c
@@ -587,7 +587,12 @@ static void
 IedConnection_setState(IedConnection self, IedConnectionState newState)
 {
     Semaphore_wait(self->stateMutex);
+
+    if (self->state != newState)
+        self->connectionStateChangedHandler(self->connectionStateChangedHandlerParameter, self, newState);
+
     self->state = newState;
+
     Semaphore_post(self->stateMutex);
 }
 
@@ -599,7 +604,7 @@ IedConnection_installConnectionClosedHandler(IedConnection self, IedConnectionCl
     self->connectionClosedParameter = parameter;
 }
 
-//TODO remove - not required - replace by mmsConnectionStateChangedHandler
+/* TODO remove - not required - replace by mmsConnectionStateChangedHandler */
 static void
 connectionLostHandler(MmsConnection connection, void* parameter)
 {
@@ -640,6 +645,13 @@ IedConnection_connect(IedConnection self, IedClientError* error, const char* hos
         *error = IED_ERROR_ALREADY_CONNECTED;
 }
 
+void
+IedConnection_installStateChangedHandler(IedConnection self, IedConnectionStateChangedHandler handler, void* parameter)
+{
+    self->connectionStateChangedHandler = handler;
+    self->connectionStateChangedHandlerParameter = parameter;
+}
+
 static void
 mmsConnectionStateChangedHandler(MmsConnection connection, void* parameter, MmsConnectionState newState)
 {
diff --git a/src/iec61850/inc_private/ied_connection_private.h b/src/iec61850/inc_private/ied_connection_private.h
index d81783b8..be74e3e9 100644
--- a/src/iec61850/inc_private/ied_connection_private.h
+++ b/src/iec61850/inc_private/ied_connection_private.h
@@ -58,6 +58,10 @@ struct sIedConnection
 
     IedConnectionClosedHandler connectionCloseHandler;
     void* connectionClosedParameter;
+
+    IedConnectionStateChangedHandler connectionStateChangedHandler;
+    void* connectionStateChangedHandlerParameter;
+
     uint32_t connectionTimeout;
 };