The network function which in Mac OS of the Apple corporation standard is loaded. In addition, general term of the protocolgroup which actualizes the networkfunctionof AppleTalk. With AppleTalkservicesuch asfile sharing and printer joint ownership is offered. It is possible also to start the application software of anothe rcomputer with respect to AppleTalk network. Ethernet (EtherTalk)Local Talk interchangeable PhoneTalk and the like which other things utilizes the telephone line in AppleTalk individual LocalTalk and the cable is used in the transmission media of AppleTalk.The software whichcanutilize the service of AppleTalk even at Windows NT and UNIX exists.