Index: leahi_dialin/dd/modules/records.py
===================================================================
diff -u -r0bc2d3976315c12417c992717621a0284bbedef4 -r0593f17d4a3a35989edbc1a576da868b5e971a0b
--- leahi_dialin/dd/modules/records.py	(.../records.py)	(revision 0bc2d3976315c12417c992717621a0284bbedef4)
+++ leahi_dialin/dd/modules/records.py	(.../records.py)	(revision 0593f17d4a3a35989edbc1a576da868b5e971a0b)
@@ -135,7 +135,7 @@
         for member in dd_enum_repository.SystemRecordFields:
             record_list.append((member.name, member.datatype(), member.multichar_length()))
 
-        self.process_into_dict(dict_to_update = self.service_records,
+        self.process_into_dict(dict_to_update = self.system_records,
                                decoder_list = record_list,
                                message = message)
 
@@ -404,7 +404,7 @@
         for member in dd_enum_repository.UsageInformationRecordFields:
             record_list.append((member.name, member.datatype()))
 
-        self.process_into_dict(dict_to_update = self.service_records,
+        self.process_into_dict(dict_to_update = self.usage_info_records,
                                decoder_list = record_list,
                                message = message)
 
Index: leahi_dialin/utils/abstract_classes.py
===================================================================
diff -u -r0bc2d3976315c12417c992717621a0284bbedef4 -r0593f17d4a3a35989edbc1a576da868b5e971a0b
--- leahi_dialin/utils/abstract_classes.py	(.../abstract_classes.py)	(revision 0bc2d3976315c12417c992717621a0284bbedef4)
+++ leahi_dialin/utils/abstract_classes.py	(.../abstract_classes.py)	(revision 0593f17d4a3a35989edbc1a576da868b5e971a0b)
@@ -206,7 +206,7 @@
             print('done\n')
 
  
-    def crc16(data: bytes) -> int:
+    def crc16(self, data: bytes) -> int:
         """
         Calculate a 16bit CRC for a payload.