RS-422 is the common short form title of American National Standards Institute (ANSI) standard ANSI/TIA/EIA-422-B Electrical Characteristics of Balanced Voltage Differential Interface Circuits and its international equivalent ITU-T Recommendation T-REC-V.11, also known as X.27.
RS-422 je běžně používaná zkratka pro standard americké organizace ANSI – ANSI/TIA/EIA-422-B Electrical Characteristics of Balanced Voltage Differential Interface Circuits a jeho mezinárodního ekvivalentu ITU-T Recommendation T-REC-V.11, také známého jako X.27.