TR-42: Telecommunications Cabling Systems

Engineering Committee TR-42 develops and maintains voluntary telecommunications standards for telecommunications cabling infrastructure in user-owned buildings, such as commercial buildings, residential buildings, homes, data centers, industrial buildings, etc. The generic cabling topologies, design, distances and outlet configurations as well as specifics for these locations are addressed. The committee’s standards work covers requirements for copper and optical fiber cabling components (such as cables, connectors and cable assemblies), installation, and field testing in addition to the administration, pathways and spaces to support the cabling.

For access to meeting dates and locations or to read past reports,

please visit the TIA Website page for TR-42

2017 Activities


  • TIA-607-C-1 Generic Telecommunications Bonding and Grounding (Earthing) for Customer Premises Addendum 1 – Bonding in Multi-tenant Buildings specifies requirements for generic telecommunications bonding infrastructure in multi-tenant buildings and can be used as a guide to renovate or retro-fit existing systems.
  • ANSI/TIA-1183-A Measurement Methods and Test Fixtures for Balunless Measurements of Balanced Components and Systems adds cabling performance parameters in permanent links and channels of category 8 cabling and components, and describes how to measure balanced cabling parameters without balun transformers in the measurement path.
  • Telecommunications Copper Cabling Systems (568) subcommittee published TSB-5021, Guidelines for the Use of Installed Category 5e and Category 6 Cabling to Support 2.5GBASE-T and 5GBASE-T. This TSB includes visual inspection procedures and field test guidelines.
  • TIA-942-B Data Center Cabling Standard. The updated standard incorporates Addendum 1 which addressed data center fabrics. It adds 16- and 32-fiber MPO-style array connectors as a connector type. It adds Category 8 as an allowed type of balanced twisted-pair cable, and changes the recommendation for Category 6A balanced twisted-pair cable to Category 6A or higher. Finally, it adds OM5 (wideband multimode fiber) as an allowed fiber type.

Call for Interest:

  • TR-42 has launched three new projects addressing Educational Facilities, Intelligent Building Systems and Residential Facilities. These are:
    • ANSI/TIA-4966-1 -Telecommunications Infrastructure Standard for Educational Facilities, Addendum 1: Updated References, Accommodation of New Media Types. Will add Cat8, OM4 and OM5 cable types to the standard.
    • ANSI/TIA-862-B-1 -Structured Cabling Infrastructure Standard for Intelligent Building Systems, Addendum 1: Updated References, Accommodation of New Media Types
    • ANSI/TIA-570-D -Residential Telecommunications Infrastructure Standard addresses telecommunications premises cabling systems supporting a wide range of telecommunications applications in residential environments including voice, data, video, security, audio, and control systems, as well as related pathways and spaces for single- and multi-dwelling residential buildings.