A visual representation detailing the internal connections of wires within a telephone cable. It illustrates how each individual wire is connected at both ends to ensure proper signal transmission. For example, a standard RJ11 connector, commonly used for landline telephones, utilizes a specific sequence of colored wires connected to designated pins within the connector.
Understanding these layouts is critical for troubleshooting phone line issues, installing new telephone jacks, or repairing damaged cabling. Correct wire configuration ensures clear voice communication, proper ring signaling, and prevents short circuits. Historically, these layouts were vital for establishing and maintaining reliable telephone networks, evolving alongside technological advancements in telecommunications.