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What is host connectivity and how does terminal emulation relate to it?

April 26, 2017connectivity emulation host relate terminal

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What is host connectivity and how does terminal emulation relate to it?

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The HOST END (IBM mainframe or midrange computer) determines the type of communications. If the HOST END stipulates synchronous communications, then the PCs or Local Area Networks (LANs) that connect to it must use synchronous connectivity solutions to access the hosts applications. These solutions include terminal emulation software products that emulate IBMs industry standard specified protocols. Protocols include batch file transfer programs (3770 and 3780) and interactive database access programs (3270 and 5250). CQs software solutions emulate these protocols to provide access to IBM hosts.