What is the definition of “cross-talk” in cabling?

The term "cross-talk" refers specifically to the unwanted transfer of signals between communication channels. This phenomenon can occur in various types of cabling systems and can lead to interference, where signals intended for one channel may leak into another, causing degradation of the communication quality.

Cross-talk is a significant concern in data transmission because it can result in errors and reduced performance, especially in systems that rely on clear, distinct signals to function effectively.

In contrast, the other options describe different concepts. Signal amplification pertains to enhancing signal strength and does not address the issue of interference. Proper grounding of cables focuses on safety and signal integrity without directly mentioning cross-talk. Isolation of audio signals describes techniques used to ensure that sound signals do not interfere with each other, but it is not the same as cross-talk, which is more broadly applicable to any type of communication signal. Thus, the definition relating to the undesired transfer of signals is the accurate and relevant characterization of cross-talk in cabling.