diff --git a/grc/decoding/gsm_tch_h_decoder.block.yml b/grc/decoding/gsm_tch_h_decoder.block.yml
new file mode 100644
index 0000000..8d26a0b
--- /dev/null
+++ b/grc/decoding/gsm_tch_h_decoder.block.yml
@@ -0,0 +1,51 @@
+# auto-generated by grc.converter
+
+id: gsm_tch_h_decoder
+label: TCH/H decoder
+
+parameters:
+-   id: sub_channel
+    label: Sub-channel number
+    dtype: int
+    default: '0'
+    options: ['0', '1']
+    hide: none
+-   id: multi_rate
+    label: MultiRate configuration
+    dtype: string
+-   id: boundary_check
+    label: Voice boundary detection
+    dtype: bool
+    default: 'False'
+    options: ['False', 'True']
+
+inputs:
+-   domain: message
+    id: bursts
+
+outputs:
+-   domain: message
+    id: msgs
+    optional: true
+-   domain: message
+    id: voice
+    optional: true
+asserts:
+- ${ sub_channel > -1 and sub_channel < 2 }
+
+templates:
+    imports: import grgsm
+    make: grgsm.tch_h_decoder(${sub_channel}, ${multi_rate}, ${boundary_check})
+
+documentation: |-
+    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
+    - the framenumber is less then the framenumber of a "Release" message
+
+file_format: 1