diff -r 02103bf20ee5 -r 90dbfc0435e3 bluetoothengine/headsetsimulator/profiles/hfpprofile/inc/features/hfpfeaturecommons.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/bluetoothengine/headsetsimulator/profiles/hfpprofile/inc/features/hfpfeaturecommons.h	Wed Sep 15 15:59:44 2010 +0200
@@ -0,0 +1,60 @@
+/* 
+ *
+ * Copyright (c) <2010> Comarch S.A. and/or its subsidiary(-ies).
+ * All rights reserved.
+ * This component and the accompanying materials are made available
+ * under the terms of the License "Eclipse Public License v1.0"
+ * which accompanies this distribution, and is available
+ * at the URL "http://www.eclipse.org/legal/epl-v10.html".
+ *
+ * Original Contributors:
+ * Comarch S.A. - original contribution.
+ *
+ * Contributors:
+ *
+ * Description:
+ *
+ */
+
+#ifndef FEATUREPROVIDERBASE_H_
+#define FEATUREPROVIDERBASE_H_
+
+#include <e32base.h>
+
+class CHsHFPCommand;
+
+/**
+ * @brief Observer of feature's class
+ */
+class MHsHFPFeatureProviderObserver
+    {
+public:
+    /**
+     * Callback method indicates that procedure is finished
+     * 
+     * @param aErr KErrNone if procedure finishes successfully, 
+     * otherwise one of the system-wide error codes
+     */
+    virtual void HandleProcedureCompleted(TInt aErr) = 0
+    };
+
+/**
+ * @brief Abstract class for particular features 
+ */
+class MHsHFPProcedureCommons
+    {
+public:
+    /**
+     * Processes AT command and prepares response
+     * 
+     * @param aInputCmd input AT command
+     * @param aOutputCmd response
+     * 
+     * @return KErrNone if successful, otherwise one of the system-wide error
+     * codes
+     */
+    virtual TInt ProcessCommand(const CHsHFPCommand &aInputCmd,
+            CHsHFPCommand &aOutputCmd) = 0;
+    };
+
+#endif /* FEATUREPROVIDERBASE_H_ */