TIA-568 is the structured cabling standard that governs the cable, connectors, and topology of the network most physical security systems run on. The standard itself is a set of documents (TIA-568.0 through TIA-568.5) maintained by the Telecommunications Industry Association. The current revision is TIA-568-E, published in 2020 and amended through 2024.
This entry is a working reference. It is not a substitute for the standards themselves. If you are designing or specifying cabling that will be commissioned and tested against TIA-568, the actual standard is what the test report will be measured against.
What the standard covers
- TIA-568.0: Generic cabling for customer premises. Defines the overall topology and the role of horizontal and backbone cabling.
- TIA-568.1: Commercial building telecommunications cabling. The “what goes in a building” document.
- TIA-568.2: Balanced twisted-pair (copper) components. Cat6, Cat6A, Cat8 specifications.
- TIA-568.3: Optical fibre cabling components. OM3, OM4, OM5, OS2 specifications.
- TIA-568.4: Broadband coaxial cabling.
- TIA-568.5: Single-pair Ethernet. Newer, relevant for some IoT and OT scenarios.
What this means for security networks
For most physical security deployments, the cabling work falls under TIA-568.1 (building cabling) and TIA-568.2 (copper) or TIA-568.3 (fibre). The relevant decisions are:
- Category selection: Cat6A is the right choice for new IP camera and access control runs. Cat6 is acceptable for shorter runs, but Cat6A is required for sustained 10GBASE-T at 100 metres and handles PoE++ better.
- Channel length: 90 metres of horizontal cable plus 10 metres of patch cords, total 100 metres end to end. Camera runs that exceed this need fibre or an intermediate switch.
- Test reports: Permanent link or channel testing per TIA-568 must be part of the commissioning package. Without it, you have no objective evidence the cabling meets spec.
- Pathway separation: Power and data separation is referenced through TIA-569 (pathways and spaces), not TIA-568 directly. Many integrators conflate the two.
Common gaps in the field
Where deployments fall short of TIA-568 in practice:
- No test reports delivered at commissioning, or test reports that show only continuity rather than the full Permanent Link or Channel parameter set.
- Cable runs that exceed 100 metres without an intermediate switch or fibre handoff.
- Cat5e specified in environments that should have been Cat6A from the start.
- Incorrect bend radius or excessive cable tension during install.
- Missing or incorrect grounding on shielded (F/UTP, S/FTP) cabling.
What to ask for in an RFP or scope of work
- Cable category and minimum performance class (e.g., “Cat6A meeting TIA-568.2-E Class EA”).
- Permanent Link or Channel testing per TIA-568 with results provided in machine-readable format (commonly .flw or .pdf from Fluke or similar testers).
- Labelling per TIA-606 (the labelling and administration standard, often paired with TIA-568 in scopes).
- Conduit and pathway specifications per TIA-569 if pathway is in scope.
This entry is a starting reference. Specific projects may need additional analysis around fibre type selection (OM3 vs OM4 vs OM5), single-pair Ethernet considerations for building automation, or labelling and administration. The Standards and Guidance KB will expand to cover these as the source material is worked through.