Before revision: , the revision status of the standard is ANSI/ TIA-568-D, published 2015 , which replaced TIA / EIA-568-C of 2009, revision B of 2001, and revision A of 1995, and the initial issue of 1991, which are now obsolete.Andrew Oliviero, Bill Woodward "Cabling: The Complete Guide to Copper and Fiber-Optic Networking", John Wiley & Sons, 2009, page 68 Perhaps the best-known features of ANSI/TIA-568 are the pin and pair assignments for eight-conductor 100-ohm balanced twisted pair cabling.
After revision: , the revision status of the standard is ANSI/ TIA-568-E, published 2020 , which replaced ANSI / TIA-568-D of 2015, revision C of 2009, revision B of 2001, and revision A of 1995, and the initial issue of 1991, which are now obsolete.Andrew Oliviero, Bill Woodward "Cabling: The Complete Guide to Copper and Fiber-Optic Networking", John Wiley & Sons, 2009, page 68 Perhaps the best-known features of ANSI/TIA-568 are the pin and pair assignments for eight-conductor 100-ohm balanced twisted pair cabling.