Index: LibCommon_Sync.ttcn
===================================================================
--- LibCommon_Sync.ttcn	(revision 63)
+++ LibCommon_Sync.ttcn	(working copy)
@@ -143,7 +143,11 @@
          * @see   LibCommon_Sync.ServerSyncComp
          * @see   LibCommon_Sync.ClientSyncComp
          */
-        type port SyncPort message { inout SyncCmd }
+        type port SyncPort message { 
+          inout SyncCmd 
+        } with {
+          extension "internal"
+        }
 
 
         /**