568A and 568B Colors - CompTIA A+ 220-1201 - 3.2

As you can imagine, the standardization for Ethernet wiring is one that extends well past the borders of any country. There is an international standard managed by the ISOC181 cabling standards document that defines the different classes of networking standards. In the US, there's the telecommunications industry association or TIA. This is a standardsbased organization that has

created a standard for the installation of cables in a commercial building. You can find this in the ANC/TIA 568 standard. Inside of that standards document is the definition of what wires go on what pins with which connectors when you're using an Ethernet network. We refer to the standardization of the pins and the colors as the

T568A color scheme. and the T568B color scheme. We need this set of standards so that we can walk into any building or look at any Ethernet cable and see a consistent coloring of wires no matter where we go. This not only helps with the process of the initial cabling installation, but it also helps

when troubleshooting that cable. These two standards of the T568A and T568B are both used on the same RJ45 type connection. But you can see that the colors used in each of these standards is slightly different from each other. In the US and probably in most places, you'll find that the T568B standard is what is commonly used.

It would be unusual for an organization to start with one standard and then change over to a different standard in the middle of their installation. Normally, organizations will be very consistent with their wiring standards, and once an organization starts using a particular standard, that's the one they normally will stay with. You also want