diff --git a/python/demapping/gsm_bcch_ccch_sdcch4_demapper.py b/python/demapping/gsm_bcch_ccch_sdcch4_demapper.py
new file mode 100644
index 0000000..92fb5f0
--- /dev/null
+++ b/python/demapping/gsm_bcch_ccch_sdcch4_demapper.py
@@ -0,0 +1,46 @@
+# -*- coding: utf-8 -*-
+##################################################
+# GNU Radio Python Flow Graph
+# Title: BCCH + CCCH + SDCCH/4 demapper
+# Author: Piotr Krysik
+# Description: Demapper for BCCH + CCCH + SDCCH/4 + SACCH/C4 control channels. This corresponds to channel combination v specified in GSM 05.02, section 6.4
+# Generated: Fri May 20 12:12:01 2016
+##################################################
+
+from gnuradio import gr
+from gnuradio.filter import firdes
+import grgsm
+
+
+class gsm_bcch_ccch_sdcch4_demapper(grgsm.hier_block):
+
+    def __init__(self, timeslot_nr=0):
+        grgsm.hier_block.__init__(
+            self, "BCCH + CCCH + SDCCH/4 demapper",
+            gr.io_signature(0, 0, 0),
+            gr.io_signature(0, 0, 0),
+        )
+        self.message_port_register_hier_in("bursts")
+        self.message_port_register_hier_out("bursts")
+
+        ##################################################
+        # Parameters
+        ##################################################
+        self.timeslot_nr = timeslot_nr
+
+        ##################################################
+        # Blocks
+        ##################################################
+        self.gsm_universal_ctrl_chans_demapper_0 = grgsm.universal_ctrl_chans_demapper(timeslot_nr, ([0,0,2,2,2,2,6,6,6,6,0,0,12,12,12,12,16,16,16,16,0,0,22,22,22,22,26,26,26,26,0,0,32,32,32,32,36,36,36,36,0,0,42,42,42,42,46,46,46,46,0,]), ([0,0,1,1,1,1,2,2,2,2,0,0,2,2,2,2,2,2,2,2,0,0,7,7,7,7,7,7,7,7,0,0,7,7,7,7,7,7,7,7,0,0,135,135,135,135,135,135,135,135,0]), ([0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,0,0,0,0,0,0,1,1,1,1,0,0,2,2,2,2,3,3,3,3,0,0,0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,0,0,0,0,0,0,1,1,1,1,0,0,2,2,2,2,3,3,3,3,0,0,2,2,2,2,3,3,3,3,0,]), ([0,0,0,0,0,0,6,6,6,6,10,10,10,10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,37,37,37,37,41,41,41,41,0,0,47,47,47,47,]), ([7,7,7,7,0,0,135,135,135,135,135,135,135,135,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,7,7,7,7,7,7,7,7,0,0,7,7,7,7,]), ([0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,0,0,3,3,3,3,0,0,0,0,0,0,2,2,2,2,3,3,3,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,0,0,3,3,3,3,]))
+
+        ##################################################
+        # Connections
+        ##################################################
+        self.msg_connect((self.gsm_universal_ctrl_chans_demapper_0, 'bursts'), (self, 'bursts'))    
+        self.msg_connect((self, 'bursts'), (self.gsm_universal_ctrl_chans_demapper_0, 'bursts'))    
+
+    def get_timeslot_nr(self):
+        return self.timeslot_nr
+
+    def set_timeslot_nr(self, timeslot_nr):
+        self.timeslot_nr = timeslot_nr