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ANSI INCITS 189-1991 (R2002)
Information Systems - Interface between Data Terminal Equipment (DTE) and Data Circuit-Terminating Equipment (DCE) for Terminals Operating in the Packet Mode and Accessing a Packet-Switched Public Data Network Through Switched Access (formerly ANSI X3.189-1991 (R1997))
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InterNational Committee for Information Technology Standards [incits]