The system of standardized hues assigned to individual conductors within telephone cabling serves to identify each wire’s specific function. This facilitates proper connection and troubleshooting during installation and maintenance. For example, a traditional four-wire telephone cable typically employs blue, orange, green, and brown pairs, each with a solid colored wire and a corresponding white wire with a stripe of the solid color.
Consistent application of this color-coding convention offers significant advantages in telecommunications. It streamlines the process of connecting lines, reduces the risk of errors that could disrupt service, and expedites fault diagnosis when problems arise. Furthermore, the development and adoption of this standard represent a key element in the evolution of telephone infrastructure, fostering interoperability and efficiency across different installations and equipment.