code: def _parse_IS_at_response(self, packet_info):
          
          if packet_info['id'] in ('at_response', 'remote_at_response') and \
                  packet_info['command'].lower() == b'is' and \
                  packet_info['status'] == b'\x00':
              return self._parse_samples(packet_info['parameter'])
          else:
              return packet_info['parameter']
docs: If the given packet is a successful remote AT response for an IS
          command, parse the parameter field as IO data.