What is the difference between the TIA/EIA standards 568-A and 568-B?
[A] In order to explain the standard correctly, we must first discuss a little history that is relevant to this standard. In 1985, the Computer Communications Industry Association requested that the Electronic Industries Alliance (EIA) to develop standards for the cabling used in telecommunications applications. The first revision of this standard was released in 1991, but was later updated again in 1995 due to the massive development of networking technology and new faster high-speed ethernet cables and networking components. This was also replaced later with the current TIA/EIA 568-B standard. Although many aspects of networking structure and performance are addressed in these standards, the most visible and often misunderstood component is the definition of the wiring assignments in the RJ45 plug. A colored wire must be placed in a specific pin location in the plug in order for the cable to meet the standard. It is these wiring assignments that differ between the T568A and T568B sta
