Nobody Can Prove the Cable Meets the Standard
"We tested it" usually means someone touched a $30 continuity tester to the run and confirmed the pins were in the right order. That tells you the cable is connected. It tells you nothing about whether it holds up at gigabit or 10-gigabit speeds under load. WITS certifies with a Fluke DSX-8000 CableAnalyzer against the full TIA-568 parameter set — insertion loss, NEXT, PS-NEXT, return loss, delay skew — and delivers a documented Pass/Fail with headroom margins for every drop.

