What is the 6th pair color code in a 25 pair switchboard cable?

The sixth pair in a standard 25 pair color code used in telecommunications is indeed represented as Red/Blue and Blue/Red. This color-coding system follows a specific pattern designed to help identify each pair of wires easily, especially when making connections or repairs.

In the context of a 25 pair cable, each pair consists of two wires, with one color representing the primary color and the second representing the secondary or combination color. The choice of Red for the first strand and Blue for the second is consistent with the established naming convention, where certain colors are paired sequentially. In this case, Red is the primary color for the first wire in the pair, and Blue is the primary for the second, reinforcing clarity in usage.

Other options feature different color combinations which do not correspond to the established pair order for the sixth pair. Understanding these conventions is crucial for anyone working in telecommunications to ensure accurate connections and maintenance of the systems involved.