Basic Terminal Access

In addition to user programming access, it is desirable to have a subsystem program at each HOST which makes the network immediately accessible from the teletype without special programming. Subsystems are commonly used system components such as text editors, compilers and interpreters. The first network-related subsystem should allow users at HOST A to connect to HOST B and appear as a regular terminal user to HOST B. It is expected that more sophisticated subsystems will be developed in time, but this basic one will render the early net immediately useful.

    Teletype
    Terminal        ______                                 ________
    _________      |      |     ______          ______    |        |
   |         |     | USER |    |      |        |      |   |SERVING |
   |         |-----| HOST |----|      |---//---|      |---| HOST   |
   |_________|     |  A   |    |      |        |      |   |  B     |
                   |______|    |______|        |______|   |________|
                  University                               Stanford
                   of Utah                                 Research
                                                           Institute

Figure 1: User accesses distant serving HOST via shunt subsystem in his own Host computer.