Mainframe interactive processing

TCP/IP Services supports traditional 3270 mainframe interactive (MFI) applications with an emulator function called Telnet (TN3270). For these applications, all program logic runs in the mainframe, and the remote host uses only that amount of logic necessary to provide basic communications services. Thus, if your requirement is simply to provide access from a remote TCP/IP host to existing IMS™ MFI applications, you should consider Telnet rather than IMS TCP/IP as the communications vehicle. Telnet 3270-emulation functions allow your TCP/IP host to communicate with traditional applications without modification.