Data record `std.tia-568-1-e.structure.backbone-length`

Verified 2026-10-25 Confidence: High

Clause 9.2 of ANSI/TIA-568.1-E (2020) sets no backbone distance of its own, leaving it to the medium and the application, counts patch cords and cross-connect jumpers within the backbone length, requires twisted-pair cord de-rating to be applied, and recommends upper lengths for jumpers at the main or intermediate cross-connect.

Provenance. Where this record comes from and where it is used: the cited source, the record itself and the entry that cites it.

Provenance: the chain from source to entry.
Step	Item	Detail
Source	ANSI/TIA-568.1-E	Licensed standard, clause 9.2
Data record	std.tia-568-1-e.structure.backbone-length	Verified 2026-10-25
Entry	ANSI/TIA-568.1-E	No revisions

Subject: ANSI/TIA-568.1-E (Standards)
Kind: Standard scope
Source: ANSI/TIA-568.1-E, 2020 edition, clause 9.2, page 36, Commercial Building Telecommunications Infrastructure Standard, TIA.

History

Every recorded change to this data record, oldest first.
Date	Change
2026-10-25	created
2026-10-25	review_status unreviewed -> software_reviewed

Cite this page

Cite the governing standard for the fact itself; cite this page as the finding aid.

"Data record std.tia-568-1-e.structure.backbone-length." Fiber Optic Reference. 2026-10-25. https://www.fiberopticreference.com/data/std.tia-568-1-e.structure.backbone-length/.

Fiber Optic Reference, Data record std.tia-568-1-e.structure.backbone-length (Oct. 25, 2026), https://www.fiberopticreference.com/data/std.tia-568-1-e.structure.backbone-length/.

@misc{etr-data-std-tia-568-1-e-structure-backbone-length,
  title = {Data record std.tia-568-1-e.structure.backbone-length},
  howpublished = {\url{https://www.fiberopticreference.com/data/std.tia-568-1-e.structure.backbone-length/}},
  organization = {Fiber Optic Reference},
  publisher = {Fiber Optic Reference},
  year = {2026},
  note = {last substantive change 2026-10-25}
}

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