What does T568A specify in networking?

T568A is a standard that defines the pinout for cabling in twisted pair Ethernet networks, particularly for Category 5 and higher cabling. It designates the specific arrangement of the wires in the RJ45 connectors, ensuring that the correct pairs are used for signaling.

The standard defines how to properly terminate twisted pair cables for straight-through connections, which are typically used to connect devices like computers to switches or routers. However, the confusion arises when differentiating between straight-through and crossover connections.

While T568A is primarily meant for straight-through wiring, the correct specification concerning crossover connections involves using a T568A termination on one end and a T568B termination on the other. Crossover connections allow direct communication between two similar devices, such as connecting two computers directly without the use of a switch.

Since T568A on its own specifies a standard for straight-through connections rather than crossover connections, it's essential to recognize the context and the use of both T568A and T568B together for creating crossover cables. Thus, the correct understanding of T568A closely aligns with its primary role in establishing straight-through connections rather than crossover configurations.