diff --git a/hier_blocks/demapping/gsm_sdcch8_demapper.grc b/hier_blocks/demapping/gsm_sdcch8_demapper.grc
index 3cc5f7e..f2d331d 100644
--- a/hier_blocks/demapping/gsm_sdcch8_demapper.grc
+++ b/hier_blocks/demapping/gsm_sdcch8_demapper.grc
@@ -121,7 +121,7 @@
     </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>
+      <value>[8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,136,136,136,136,136,136,136,136,136,136,136,136,136,136,136,136,0,0,0,]</value>
     </param>
     <param>
       <key>downlink_starts_fn_mod51</key>
@@ -137,7 +137,7 @@
     </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>
+      <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_starts_fn_mod51</key>