Searching "t568" doesn't bring up any matches: presumably the topic ain't been covered. As far as stringing ethernet cables, T568A and T568B connector standards for CAT5E are transparent to the hardware being connected so long as one preserves the standard (and gender?) at both ends of a cable run. Net sites discussing A & B include caveats regarding mixing; A won't work with B, and vice versa, with comments that video goes to hell, or other nagging problems, intermittents, sensitivity to phases of the moon, you name it. The questions: has anyone ever had such problems; and, does anyone know physically what's happening to signals?