This paper presents conceptual approaches to the synthesis of switching functions in future military networks. The special requirements of military communications are shown to favor the implementation of integrated networks which provide all services (voice, data, imagery) within a single unified network structure. Transparent and transactional methods are defined as contrasting approaches to the realization of the required switching functions. The conceptual approaches to switching in future military networks are presented in the context of cultural differences which appear to exist between the differing perceptions of the adherents of circuit switching and packet switching. Special consideration is devoted to the issue of software engineering and the impact of current trends in DoD procurement policy.

This paper concerns data communications in the U.S Department of Defense. It includes a historical perspective on DoD common-user data systems: AUTODIN I, ARPANET, and AUTODIN II. It treats data communications on an end-to-end basis, including automation of communications center functions by the user. The Integrated AUTODIN System Architecture (IASA) project was defined by DoD to provide a total data communications system design on an end-to-end basis. The main results of this paper are based on IASA work and include the use of AUTODIN II as the IAS backbone, the integration of AUTODIN I and AUTODIN II, the definition of a new DoD program called the Inter-Service/Agency Automated Message Processing Exchange (I-S/A AMPE), the development of DoD standard protocols, formats and procedures, a brief description of the IAS security architecture, and a plan for internetting different networks via gateways and internet protocols. A plan for the future disposition of the ARPANET is included. The paper concludes with some speculative material on the long-range future of United States military data communications.

In the first talk, Dr. Lebow will discuss DoD plans for providing secure voice for three disparate communities within DoD: 1. Narrowband Tactical (datarate: up to 2.4 KB), 2. Wideband Tactical (16 and 32 KB) and 3. Long-haul Strategic (DCS-based, up to 9.6 KB). Dr. Lebow will compare advantages and deficiencies of the three systems and will discuss the evolution of these systems into a two-rate architecture in the 1990's.,

This paper is devoted to the development of procedures for synthesizing threshold-logic elements which can be employed in redundant networks based on the von Neumann multiplexing principle. A major result is the statement of rules for synthesizing elements whose outputs are correct despite the presence of e or fewer errors on the input lines. Several theorems are proved and used as the basis for establishing synthesis rules for four canonical redundant threshold element specifications. Some of these canonical elements are optimum in the sense that they require the minimum sum of weights or minimum sum of input bundle sizes.