code: def setOutBoundLinkQuality(self, LinkQuality):
          
          print '%s call setOutBoundLinkQuality' % self.port
          print LinkQuality
          try:
              cmd = 'macfilter rss add-lqi * %s' % str(LinkQuality)
              print cmd
              return self.__sendCommand(cmd)[0] == 'Done'
          except Exception, e:
              ModuleHelper.WriteIntoDebugLogger("setOutBoundLinkQuality() Error: " + str(e))
docs: set custom LinkQualityIn for all receiving messages from the any address
  
          Args:
              LinkQuality: a given custom link quality
                           link quality/link margin mapping table
                           3: 21 - 255 (dB)
                           2: 11 - 20 (dB)
                           1: 3 - 9 (dB)
                           0: 0 - 2 (dB)
  
          Returns:
              True: successful to set the link quality
              False: fail to set the link quality