John F. Heafner

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Much has been said about the mechanics of the ARPA Computer Network (ARPANET) and especially about the organization of its communications subnet. Until recently the main effort has gone into the implementation of an ARPANET user-level communications interface. Operating just above the communications subnet in ARPANET HOST Computers, this ARPANET interface(More)
Application programs require specific I/O data formats that differ from program to program. One approach recently adopted for providing resource sharing of disparate programs is to develop specific dialogs for classes of programs. Each such program must then be retrofitted with one of the standard dialog interfaces. The DRS exhibits a different view of(More)
The technology exists to produce systems for automated communication within one office or among separate offices. What does NOT exist is a methodology for making such systems EFFECTIVE and ATTRACTIVE for computer-naive users, attributes that should be considered highly important to the sucess of an office-automation system. This paper presents the(More)
This paper describes a manual procedure for itemizing the service features of a computer network protocol. The procedure has been tested and refined several times. The testing is described here, along with analysis of test results and general observations. The authors conclude that, although the procedure now provides only partially satisfying results, such(More)
The National Bureau of Standards has developed service and design specifications for transport and session protocols for use in computer system and network procurements. These protocols reside in layers four and five of the International Organization for Standardization's (ISO) Reference Model for Open Systems Interconnection. This paper describes the(More)
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