An Inside Look at TSB 5073

As the Telecommunications Systems Bulletin that will address copper cabling applications beyond 100 meters is being drafted, the document’s editor and the chair of the TR-42.7 Committee explain what to expect, and when.
Dec. 12, 2025
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Copper Cabling Beyond 100 Meters

Brian Celella, chair of the Telecommunications Industry Association’s TR-42.7 Committee, and Todd Harpel, editor of the forthcoming TSB 5073, recently took time to answer our questions about the process by which the Telecommunications Systems Bulletin is being developed. TSB 5073 will address twisted-pair copper cabling’s support of applications at distances greater than 100 meters.

Our conversation goes into detail about the following topics.

  • How long this effort has been underway within TR-42
  • Benefits of end-user input into TSB 5073’s creation
  • The differences between a TSB and a standard
  • Some of the language we’re likely to see in TSB 5073
  • When a first draft will be created (Teaser: It’s sooner than you probably think)

Watch the full video to gain insight into the processes and particulars of TSB 5073.

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