diff --git a/include/grgsm/flow_control/burst_sdcch_subslot_splitter.h b/include/grgsm/flow_control/burst_sdcch_subslot_splitter.h
index 2b48c43..83f98ba 100644
--- a/include/grgsm/flow_control/burst_sdcch_subslot_splitter.h
+++ b/include/grgsm/flow_control/burst_sdcch_subslot_splitter.h
@@ -54,6 +54,10 @@
        * creating new instances.
        */
       static sptr make(splitter_mode mode);
+
+      /* External API */
+      virtual splitter_mode get_mode(void) = 0;
+      virtual splitter_mode set_mode(splitter_mode mode) = 0;
     };
   } // namespace gsm
 } // namespace gr
diff --git a/lib/flow_control/burst_sdcch_subslot_splitter_impl.cc b/lib/flow_control/burst_sdcch_subslot_splitter_impl.cc
index 90237d9..46177c1 100644
--- a/lib/flow_control/burst_sdcch_subslot_splitter_impl.cc
+++ b/lib/flow_control/burst_sdcch_subslot_splitter_impl.cc
@@ -141,5 +141,20 @@
 
         message_port_pub(pmt::mp(port), msg);
     }
+
+    /* External API */
+    splitter_mode
+    burst_sdcch_subslot_splitter_impl::get_mode(void)
+    {
+      return d_mode;
+    }
+
+    splitter_mode
+    burst_sdcch_subslot_splitter_impl::set_mode(splitter_mode mode)
+    {
+      d_mode = mode;
+      return d_mode;
+    }
+
   } /* namespace gsm */
 } /* namespace gr */
diff --git a/lib/flow_control/burst_sdcch_subslot_splitter_impl.h b/lib/flow_control/burst_sdcch_subslot_splitter_impl.h
index b8eaaea..50aa028 100644
--- a/lib/flow_control/burst_sdcch_subslot_splitter_impl.h
+++ b/lib/flow_control/burst_sdcch_subslot_splitter_impl.h
@@ -36,6 +36,10 @@
       burst_sdcch_subslot_splitter_impl(splitter_mode mode);
       ~burst_sdcch_subslot_splitter_impl();
       void process_burst(pmt::pmt_t msg);
+
+      /* External API */
+      splitter_mode get_mode(void);
+      splitter_mode set_mode(splitter_mode mode);
     };
 
   } // namespace gsm