![]() Each pair uses a different twist rate per meter which further facilitates noise rejection.Ĭables are split into different categories commonly known as a CAT rating. What is the significance of twisting pairs? It is done to prevent a phenomenon known as ‘cross-talk’ which is essentially the occurrence of electromagnetic interference across the line. The twist is clearly visible when physically inspecting the pairs inside the cable. Modern Ethernet is based on the principle of using 4 twisted pairs inside a single cable jacket.
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