diff --git a/hier_blocks/compile_demappers b/hier_blocks/compile_demappers
new file mode 100755
index 0000000..96d652b
--- /dev/null
+++ b/hier_blocks/compile_demappers
@@ -0,0 +1,37 @@
+#!/bin/bash
+
+#This is just helper script for manual compilation of hierarhical blocks
+#by gr-gsm developers
+#Author: Piotr Krysik
+
+cd demapping
+for p in *.grc
+do
+    echo $p
+    grcc $p -d `pwd`
+done
+cd ..
+
+mv ~/.grc_gnuradio/gsm_* .
+
+for file in *.py.xml
+do
+    cat $file | sed 's/.*\<import\>.*/  <import>import grgsm<\/import>/' \
+              | sed 's/<make>/<make>grgsm./' \
+              | sed "s/.*.py//" \
+              | sed 's/<grc_source>.*hier_blocks/<grc_source>gr-gsm\/hier_blocks/' \
+              > ${file}2
+
+    mv ${file}2 $file
+
+    mv "$file" "`basename $file .py.xml`.xml"
+done
+
+for py in *.py
+do
+    cat $py |sed 's/gr.hier_block2/grgsm.hier_block/' > ${py}2
+    mv ${py}2 $py
+done
+
+mv *.py ../python/demapping
+mv *.xml ../grc/demapping
\ No newline at end of file
diff --git a/hier_blocks/demapping/gsm_bcch_ccch_demapper.grc b/hier_blocks/demapping/gsm_bcch_ccch_demapper.grc
new file mode 100644
index 0000000..faef3dd
--- /dev/null
+++ b/hier_blocks/demapping/gsm_bcch_ccch_demapper.grc
@@ -0,0 +1,292 @@
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.9'?>
+<flow_graph>
+  <timestamp>Tue May 17 17:08:42 2016</timestamp>
+  <block>
+    <key>options</key>
+    <param>
+      <key>author</key>
+      <value>Piotr Krysik</value>
+    </param>
+    <param>
+      <key>window_size</key>
+      <value></value>
+    </param>
+    <param>
+      <key>category</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>description</key>
+      <value>Demapper for BCCH + CCCH control channels. This corresponds to channel combination iv specified in GSM 05.02, section 6.4</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(8, 8)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>generate_options</key>
+      <value>hb</value>
+    </param>
+    <param>
+      <key>hier_block_src_path</key>
+      <value>.:</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>gsm_bcch_ccch_demapper</value>
+    </param>
+    <param>
+      <key>max_nouts</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>qt_qss_theme</key>
+      <value></value>
+    </param>
+    <param>
+      <key>realtime_scheduling</key>
+      <value></value>
+    </param>
+    <param>
+      <key>run_command</key>
+      <value>{python} -u {filename}</value>
+    </param>
+    <param>
+      <key>run_options</key>
+      <value>prompt</value>
+    </param>
+    <param>
+      <key>run</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>thread_safe_setters</key>
+      <value></value>
+    </param>
+    <param>
+      <key>title</key>
+      <value>BCCH + CCCH demapper</value>
+    </param>
+  </block>
+  <block>
+    <key>gsm_universal_ctrl_chans_demapper</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(168, 193)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>gsm_universal_ctrl_chans_demapper_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>downlink_channel_types</key>
+      <value>[0,0,1,1,1,1,2,2,2,2,0,0,2,2,2,2,2,2,2,2,0,0,2,2,2,2,2,2,2,2,0,0,2,2,2,2,2,2,2,2,0,0,2,2,2,2,2,2,2,2,0,]</value>
+    </param>
+    <param>
+      <key>downlink_starts_fn_mod51</key>
+      <value>[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,]</value>
+    </param>
+    <param>
+      <key>downlink_subslots</key>
+      <value>[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,]</value>
+    </param>
+    <param>
+      <key>timeslot_nr</key>
+      <value>timeslot_nr</value>
+    </param>
+    <param>
+      <key>uplink_channel_types</key>
+      <value>[2,2,2,2,0,0,2,2,2,2,2,2,2,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,2,2,2,2,2,2,2,0,0,2,2,2,2,]</value>
+    </param>
+    <param>
+      <key>uplink_starts_fn_mod51</key>
+      <value>[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]</value>
+    </param>
+    <param>
+      <key>uplink_subslots</key>
+      <value>[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,]</value>
+    </param>
+  </block>
+  <block>
+    <key>pad_sink</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(424, 188)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>pad_sink_0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>message</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>bursts</value>
+    </param>
+    <param>
+      <key>num_streams</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>optional</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>pad_source</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(32, 188)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>pad_source_0</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>bursts</value>
+    </param>
+    <param>
+      <key>num_streams</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>optional</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>message</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>parameter</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(192, 7)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>timeslot_nr</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>timeslot_nr</value>
+    </param>
+    <param>
+      <key>short_id</key>
+      <value></value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>intx</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>0</value>
+    </param>
+  </block>
+  <connection>
+    <source_block_id>gsm_universal_ctrl_chans_demapper_0</source_block_id>
+    <sink_block_id>pad_sink_0</sink_block_id>
+    <source_key>bursts</source_key>
+    <sink_key>in</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>pad_source_0</source_block_id>
+    <sink_block_id>gsm_universal_ctrl_chans_demapper_0</sink_block_id>
+    <source_key>out</source_key>
+    <sink_key>bursts</sink_key>
+  </connection>
+</flow_graph>
diff --git a/hier_blocks/demapping/gsm_bcch_ccch_sdcch4_demapper.grc b/hier_blocks/demapping/gsm_bcch_ccch_sdcch4_demapper.grc
new file mode 100644
index 0000000..ad5c751
--- /dev/null
+++ b/hier_blocks/demapping/gsm_bcch_ccch_sdcch4_demapper.grc
@@ -0,0 +1,292 @@
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.9'?>
+<flow_graph>
+  <timestamp>Tue May 17 17:08:42 2016</timestamp>
+  <block>
+    <key>options</key>
+    <param>
+      <key>author</key>
+      <value>Piotr Krysik</value>
+    </param>
+    <param>
+      <key>window_size</key>
+      <value></value>
+    </param>
+    <param>
+      <key>category</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>description</key>
+      <value>Demapper for BCCH + CCCH + SDCCH/4 + SACCH/C4 control channels. This corresponds to channel combination v specified in GSM 05.02, section 6.4</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(8, 8)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>generate_options</key>
+      <value>hb</value>
+    </param>
+    <param>
+      <key>hier_block_src_path</key>
+      <value>.:</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>gsm_bcch_ccch_sdcch4_demapper</value>
+    </param>
+    <param>
+      <key>max_nouts</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>qt_qss_theme</key>
+      <value></value>
+    </param>
+    <param>
+      <key>realtime_scheduling</key>
+      <value></value>
+    </param>
+    <param>
+      <key>run_command</key>
+      <value>{python} -u {filename}</value>
+    </param>
+    <param>
+      <key>run_options</key>
+      <value>prompt</value>
+    </param>
+    <param>
+      <key>run</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>thread_safe_setters</key>
+      <value></value>
+    </param>
+    <param>
+      <key>title</key>
+      <value>BCCH + CCCH + SDCCH/4 demapper</value>
+    </param>
+  </block>
+  <block>
+    <key>gsm_universal_ctrl_chans_demapper</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(168, 193)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>gsm_universal_ctrl_chans_demapper_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>downlink_channel_types</key>
+      <value>[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]</value>
+    </param>
+    <param>
+      <key>downlink_starts_fn_mod51</key>
+      <value>[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,]</value>
+    </param>
+    <param>
+      <key>downlink_subslots</key>
+      <value>[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,]</value>
+    </param>
+    <param>
+      <key>timeslot_nr</key>
+      <value>timeslot_nr</value>
+    </param>
+    <param>
+      <key>uplink_channel_types</key>
+      <value>[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,]</value>
+    </param>
+    <param>
+      <key>uplink_starts_fn_mod51</key>
+      <value>[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,]</value>
+    </param>
+    <param>
+      <key>uplink_subslots</key>
+      <value>[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,]</value>
+    </param>
+  </block>
+  <block>
+    <key>pad_sink</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(416, 188)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>pad_sink_0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>message</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>bursts</value>
+    </param>
+    <param>
+      <key>num_streams</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>optional</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>pad_source</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(32, 188)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>pad_source_0</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>bursts</value>
+    </param>
+    <param>
+      <key>num_streams</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>optional</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>message</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>parameter</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(192, 7)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>timeslot_nr</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>timeslot_nr</value>
+    </param>
+    <param>
+      <key>short_id</key>
+      <value></value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>intx</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>0</value>
+    </param>
+  </block>
+  <connection>
+    <source_block_id>gsm_universal_ctrl_chans_demapper_0</source_block_id>
+    <sink_block_id>pad_sink_0</sink_block_id>
+    <source_key>bursts</source_key>
+    <sink_key>in</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>pad_source_0</source_block_id>
+    <sink_block_id>gsm_universal_ctrl_chans_demapper_0</sink_block_id>
+    <source_key>out</source_key>
+    <sink_key>bursts</sink_key>
+  </connection>
+</flow_graph>
diff --git a/hier_blocks/demapping/gsm_sdcch8_demapper.grc b/hier_blocks/demapping/gsm_sdcch8_demapper.grc
new file mode 100644
index 0000000..3cc5f7e
--- /dev/null
+++ b/hier_blocks/demapping/gsm_sdcch8_demapper.grc
@@ -0,0 +1,292 @@
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.9'?>
+<flow_graph>
+  <timestamp>Tue May 17 17:08:42 2016</timestamp>
+  <block>
+    <key>options</key>
+    <param>
+      <key>author</key>
+      <value>Piotr Krysik</value>
+    </param>
+    <param>
+      <key>window_size</key>
+      <value></value>
+    </param>
+    <param>
+      <key>category</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>description</key>
+      <value>Demapper for SDCCH/8 + SACCH/C8 control channels. This corresponds to channel combination vii specified in GSM 05.02, section 6.4</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(8, 8)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>generate_options</key>
+      <value>hb</value>
+    </param>
+    <param>
+      <key>hier_block_src_path</key>
+      <value>.:</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>gsm_sdcch8_demapper</value>
+    </param>
+    <param>
+      <key>max_nouts</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>qt_qss_theme</key>
+      <value></value>
+    </param>
+    <param>
+      <key>realtime_scheduling</key>
+      <value></value>
+    </param>
+    <param>
+      <key>run_command</key>
+      <value>{python} -u {filename}</value>
+    </param>
+    <param>
+      <key>run_options</key>
+      <value>prompt</value>
+    </param>
+    <param>
+      <key>run</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>thread_safe_setters</key>
+      <value></value>
+    </param>
+    <param>
+      <key>title</key>
+      <value>SDCCH/8 demapper</value>
+    </param>
+  </block>
+  <block>
+    <key>gsm_universal_ctrl_chans_demapper</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(168, 193)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>gsm_universal_ctrl_chans_demapper_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>downlink_channel_types</key>
+      <value>[0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,6,6,6,6,7,7,7,7,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,6,6,6,6,7,7,7,7,4,4,4,4,5,5,5,5,6,6,6,6,7,7,7,7,0,0,0]</value>
+    </param>
+    <param>
+      <key>downlink_starts_fn_mod51</key>
+      <value>[0,0,0,0,4,4,4,4,8,8,8,8,12,12,12,12,16,16,16,16,20,20,20,20,24,24,24,24,28,28,28,28,32,32,32,32,36,36,36,36,40,40,40,40,44,44,44,44,0,0,0]</value>
+    </param>
+    <param>
+      <key>downlink_subslots</key>
+      <value>[0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,6,6,6,6,7,7,7,7,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,6,6,6,6,7,7,7,7,4,4,4,4,5,5,5,5,6,6,6,6,7,7,7,7,0,0,0,]</value>
+    </param>
+    <param>
+      <key>timeslot_nr</key>
+      <value>timeslot_nr</value>
+    </param>
+    <param>
+      <key>uplink_channel_types</key>
+      <value>[1,1,1,1,2,2,2,2,3,3,3,3,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,6,6,6,6,7,7,7,7,0,0,0,0,5,5,5,5,6,6,6,6,7,7,7,7,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,6,6,6,6,7,7,7,7,4,4,4,4]</value>
+    </param>
+    <param>
+      <key>uplink_starts_fn_mod51</key>
+      <value>[136,136,136,136,136,136,136,136,136,136,136,136,0,0,0,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,136,136,136,136]</value>
+    </param>
+    <param>
+      <key>uplink_subslots</key>
+      <value>[1,1,1,1,2,2,2,2,3,3,3,3,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,6,6,6,6,7,7,7,7,0,0,0,0,5,5,5,5,6,6,6,6,7,7,7,7,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,6,6,6,6,7,7,7,7,4,4,4,4,]</value>
+    </param>
+  </block>
+  <block>
+    <key>pad_sink</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(416, 188)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>pad_sink_0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>message</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>bursts</value>
+    </param>
+    <param>
+      <key>num_streams</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>optional</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>pad_source</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(32, 188)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>pad_source_0</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>bursts</value>
+    </param>
+    <param>
+      <key>num_streams</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>optional</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>message</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>parameter</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(192, 7)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>timeslot_nr</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>timeslot_nr</value>
+    </param>
+    <param>
+      <key>short_id</key>
+      <value></value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>intx</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>1</value>
+    </param>
+  </block>
+  <connection>
+    <source_block_id>gsm_universal_ctrl_chans_demapper_0</source_block_id>
+    <sink_block_id>pad_sink_0</sink_block_id>
+    <source_key>bursts</source_key>
+    <sink_key>in</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>pad_source_0</source_block_id>
+    <sink_block_id>gsm_universal_ctrl_chans_demapper_0</sink_block_id>
+    <source_key>out</source_key>
+    <sink_key>bursts</sink_key>
+  </connection>
+</flow_graph>