diff --git a/apps/grgsm_decode b/apps/grgsm_decode
index 3bc0db3..4bd1d95 100755
--- a/apps/grgsm_decode
+++ b/apps/grgsm_decode
@@ -344,7 +344,7 @@
     tch_options.add_option("--sub-channel", dest="tch_h_channel", default="0", type='intx',
                            help="TCH/H sub-channel. [default=0]")
     tch_options.add_option("--multi-rate", dest="multi_rate", default="", type='string',
-                           help="The MultiRrate configuration element from the Assignment Command message. "
+                           help="The MultiRate configuration element from the Assignment Command message. "
                            "Example: 28111a40. See 3GPP TS 44.018 - 10.5.2.21aa MultiRate configuration")
     tch_options.add_option("--voice-boundary", dest="enable_voice_boundary_detection", action="store_true", default=False,
                            help="Enable voice boundary detection for traffic channels. This can help reduce noice in the output.")
diff --git a/grc/decoding/gsm_tch_h_decoder.xml b/grc/decoding/gsm_tch_h_decoder.xml
index 895104e..3936336 100644
--- a/grc/decoding/gsm_tch_h_decoder.xml
+++ b/grc/decoding/gsm_tch_h_decoder.xml
@@ -3,54 +3,27 @@
   <name>TCH/H decoder</name>
   <key>gsm_tch_h_decoder</key>
   <import>import grgsm</import>
-  <make>grgsm.tch_h_decoder($sub_channel, $mode, $boundary_check)</make>
+  <make>grgsm.tch_h_decoder($sub_channel, $multi_rate, $boundary_check)</make>
 
   <param>
-    <name>sub-channel number</name>
+    <name>Sub-channel number</name>
     <key>sub_channel</key>
     <value>0</value>
     <type>int</type>
+    <hide>none</hide>
     <option>
-      <name>sub-channel 0</name>
+      <name>0</name>
       <key>0</key>
     </option>
     <option>
-      <name>sub-channel 1</name>
+      <name>1</name>
       <key>1</key>
     </option>
   </param>
   <param>
-    <name>TCH/H coding mode</name>
-    <key>mode</key>
-    <type>enum</type>
-    <option>
-      <name>GSM-HS</name>
-      <key>grgsm.TCH_HS</key>
-    </option>
-    <option>
-      <name>GSM-AMR 7.95</name>
-      <key>grgsm.TCH_AHS7_95</key>
-    </option>
-    <option>
-      <name>GSM-AMR 7.4</name>
-      <key>grgsm.TCH_AHS7_4</key>
-    </option>
-    <option>
-      <name>GSM-AMR 6.7</name>
-      <key>grgsm.TCH_AHS6_7</key>
-    </option>
-    <option>
-      <name>GSM-AMR 5.9</name>
-      <key>grgsm.TCH_AHS5_9</key>
-    </option>
-    <option>
-      <name>GSM-AMR 5.15</name>
-      <key>grgsm.TCH_AHS5_15</key>
-    </option>
-    <option>
-      <name>GSM-AMR 4.75</name>
-      <key>grgsm.TCH_AHS4_75</key>
-    </option>
+    <name>MultiRate configuration</name>
+    <key>multi_rate</key>
+    <type>string</type>
   </param>
   <param>
     <name>Voice boundary detection</name>
@@ -83,6 +56,11 @@
   </source>
 
   <doc>
+The MultiRate configuration string should contains the hex string from the
+MultiRate configuration element from the Assignment Command message.
+Example: 28111a40.
+See 3GPP TS 44.018 - 10.5.2.21aa MultiRate configuratio
+
 If "Voice boundary detection" is enabled, then only bursts are decoded as voice where
 
 - the framenumber is greater then the framenumber of a received "Connect" or "Connect Acknowlegde" message, and
diff --git a/grc/demapping/gsm_tch_h_chans_demapper.xml b/grc/demapping/gsm_tch_h_chans_demapper.xml
index f2bd67f..52148f5 100644
--- a/grc/demapping/gsm_tch_h_chans_demapper.xml
+++ b/grc/demapping/gsm_tch_h_chans_demapper.xml
@@ -10,22 +10,29 @@
     <key>timeslot_nr</key>
     <value>2</value>
     <type>int</type>
-    <hide>part</hide>
+    <hide>none</hide>
   </param>
 
   <param>
-    <name>TCH/H Channel</name>
+    <name>Sub-channel number</name>
     <key>tch_h_channel</key>
     <value>0</value>
     <type>int</type>
-    <hide>#if $tch_type() == 0 then 'all' else 'none'#</hide>
+    <hide>none</hide>
+    <option>
+      <name>0</name>
+      <key>0</key>
+    </option>
+    <option>
+      <name>1</name>
+      <key>1</key>
+    </option>
   </param>
   <check>$tch_h_channel() &gt; -1 and $tch_h_channel() &lt; 2</check>
 
   <sink>
     <name>bursts</name>
     <type>message</type>
-    <optional>1</optional>
   </sink>
   <source>
     <name>tch_bursts</name>
diff --git a/python/CMakeLists.txt b/python/CMakeLists.txt
index 22c88a9..21f2507 100644
--- a/python/CMakeLists.txt
+++ b/python/CMakeLists.txt
@@ -58,6 +58,7 @@
 GR_ADD_TEST(qa_burst_fnr_filter ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/qa_burst_fnr_filter.py)
 GR_ADD_TEST(qa_dummy_burst_filter ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/qa_dummy_burst_filter.py)
 GR_ADD_TEST(qa_tch_f_decoder ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/qa_tch_f_decoder.py)
+GR_ADD_TEST(qa_tch_h_decoder ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/qa_tch_h_decoder.py)
 GR_ADD_TEST(qa_tch_f_chans_demapper ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/qa_tch_f_chans_demapper.py)
 GR_ADD_TEST(qa_tch_h_chans_demapper ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/qa_tch_h_chans_demapper.py)
 #GR_ADD_TEST(qa_msg_to_tag ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/qa_msg_to_tag.py)