code: def start_all_linking(self, mode, group):
          
          msg = StartAllLinking(mode, group)
          self.send_msg(msg)
docs: Put the IM into All-Linking mode.
  
          Puts the IM into All-Linking mode for 4 minutes.
  
          Parameters:
              mode: 0 | 1 | 3 | 255
                    0 - PLM is responder
                    1 - PLM is controller
                    3 - Device that initiated All-Linking is Controller
                  255 = Delete All-Link
              group: All-Link group number (0 - 255)