Straight through cable can be used on both Fast Ethernet (10/100 Base-T) and Gigabit Ethernet (1000 Base-T). When you use the T658-A to endpoint 1, the same configuration to endpoint 2 of the cable likewise, T568-B configuration applies the same procedure.įig 1 - T658A and T658B network cable color coding You can simply configure it the same from endpoint-to-endpoint. To crimp a straight through networking cable. The T568-A which is used under the international building code and the T568-B which is used under the industry or conventional code. There are typically two general configurations for the color coding for cables. Straight through network cables are typically used when connecting computers using external networking devices such as ROUTER, HUB or SWITCH.