Category 5 TIA/EIA-568A and 568B Configurations

Two different pair sequences are used for terminating pairs in a Category 5 cabling system.

Each pair consists of 2 conductors known as the Tip and Ring. The tip (or L+) conductor is always white and the ring (L-) conductor is coloured. Each pair of conductors is assigned a pair of pins in the modular jack according to one of the following standard sequences.

The preferred pair assignment for use in Australia is identified as 568A. Both 568A and 568B configurations utilise pin/pair assignments that provide superior transmission performance over other category 5 wiring configurations.

TIA/EIA 568A (Preferred Configuration)
TIA/EIA 568B (AT& T Configuration)

A datasheet describing the different configurations of our Category 5 splitters
(Catalog # P2332, P2334, P2335, P2336) is available for viewing or download.