PL / I was used to write an executable formal definition to interpret IBM's System Network Architecture
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Other socket types are implemented over other transport protocols, such as Systems Network Architecture ( SNA ).
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In 1974, IBM announced Systems Network Architecture ( SNA ), a networking protocol for computing systems.
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DIGITAL published its first DNA specification at about the same time that IBM announced its Systems Network Architecture ( SNA ).
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The company's service was launched regionally in 1988 in IBM's Systems Network Architecture ( SNA ) network backbone.
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IBM's " Systems Network Architecture " ( SNA ) was initially designed to enable the hierarchical connection of workstations to IBM mainframe computers.
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It was derived from IBM's Synchronous Data Link Control protocol, which is the layer 2 protocol for IBM's Systems Network Architecture developed around 1975.
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Leased lines were used to connect mainframe computers with terminals and remote sites, via IBM Systems Network Architecture ( created in 1974 ) or DECnet ( created in 1975 ).
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These protocols included IBM Systems Network Architecture ( SNA ), Digital Equipment Corporation's DECnet, Open Systems Interconnection ( OSI ), and Xerox Network Systems ( XNS ).
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In 1969, Green became head of IBM Research, communications dept ., involved in the Systems Network Architecture, in particular the Advanced peer-to-peer networking protocol.