The Micro-mainframe link reference article from the English Wikipedia on 24-Apr-2004
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Micro-mainframe link

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In telecommunication, a micro-mainframe link is a physical or logical connection established between a remote microprocessor and mainframe host computer for the express purpose of uploading, downloading, or viewing interactive data and databases on-line in real time.

Note: A micro-mainframe link usually requires terminal emulation software on the microcomputer.

Source: from Federal Standard 1037C