TIA/EIA-568 is a set of telecommunications standards from the Telecommunications Industry Association. The standards address commercial building cabling for telecommunications products and services.

As of 2015, the standard is at revision D, replacing the 2014 revision C.


TIA/EIA-568 defines structured cabling system standards for commercial buildings, and between buildings in campus environments. The bulk of the standards define cabling types, distances, connectors, cable system architectures, cable termination standards and performance characteristics, cable installation requirements and methods of testing installed cable.

  • TIA/EIA-568-D.1 defines general requirements,
  • TIA-568-D.2 focuses on components of balanced twisted-pair cable systems
  • TIA-568-D.3 addresses components of fiber optic cable systems, and
  • TIA-568-D.4, addressed coaxial cabling components.

The intent of these standards is to provide recommended practices for the design and installation of cabling systems that will support a wide variety of existing and future services. Developers hope the standards will provide a lifespan for commercial cabling systems in excess of ten years.

Purchase ANSI/TIA 568 Standard