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diff --git a/lib/flow_control/burst_type_filter_impl.h b/lib/flow_control/burst_type_filter_impl.h
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+++ b/lib/flow_control/burst_type_filter_impl.h
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+/* -*- c++ -*- */
+/* @file
+ * @author (C) 2017 by Piotr Krysik <ptrkrysik@gmail.com>
+ * @section LICENSE
+ *
+ * Gr-gsm 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 3, or (at your option)
+ * any later version.
+ *
+ * Gr-gsm 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 gr-gsm; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef INCLUDED_GSM_BURST_TYPE_FILTER_IMPL_H
+#define INCLUDED_GSM_BURST_TYPE_FILTER_IMPL_H
+
+#define BURST_TYPE_LEN 148
+
+#include <grgsm/flow_control/burst_type_filter.h>
+
+namespace gr {
+  namespace gsm {
+
+    class burst_type_filter_impl : public burst_type_filter
+    {
+     private:
+      filter_policy d_filter_policy;
+      std::vector<uint8_t> d_selected_burst_types;
+     public:
+      burst_type_filter_impl(const std::vector<uint8_t> & selected_burst_types);
+      ~burst_type_filter_impl();
+      void process_burst(pmt::pmt_t msg);
+
+      /* External API */
+      /* Filtering policy */
+      filter_policy get_policy(void);
+      filter_policy set_policy(filter_policy policy);
+      
+      void set_selected_burst_types(const std::vector<uint8_t> & selected_burst_types);
+    };
+
+  } // namespace gsm
+} // namespace gr
+
+#endif /* INCLUDED_GSM_BURST_TYPE_FILTER_IMPL_H */
+