Original sentence: , the standard is at revision C, replacing the 2001 revision B, the 1995 revision A, and the initial issue of 1991, which are now obsolete.1-1991 was released in 1991.TIA/EIA-568 is a set of telecommunications standards from the Telecommunications Industry Association (TIA), an offshoot of the Electronic Industries Alliance (EIA).The development of high-performance twisted pair cabling and the popularization of fiber optic cables also drove significant change in the standards.The standard was updated to revision B in 1995.The standards address commercial building cabling for telecomunications products and services.The work continues to be maintained by TR-42 within the TIA.These assignments are named T568A and T568B.These changes were first released in a revision C in 2009 which has subsequently received minor maintenance updates.Work on the standard began with the EIA, to define standards for telecommunications cabling systems
Edited sentence: 1-1991 was released in 1991, and was updated in 1995.TIA/EIA-568 is a set of telecommunications standards from the Telecommunications Industry Association, an offshoot of the EIA.The development of high-performance twisted pair cabling and the popularization of fiber optic cables also drove significant change in the standards, which were eventually superseded by the current TIA/EIA-568-C set.The standard is currently (2009) at revision C, replacing the 2001 revision B, the 1995 revision A, and the initial issue of 1991, which are now obsolete.The standards address commercial building cabling for telecom products and services.The work continues to be maintained by TR-42 within the Telecommunications Industry Association.These assignments are named T568A and T568B, and are frequently referred to (erroneously) as TIA/EIA-568A and TIA/EIA-568B.Work on the standard began with the Electronic Industries Alliance (EIA), a standards organization, to define standards for telecommunications cabling systems