In communication systems, what does Ingress mean?

Ingress in communication systems refers to unwanted signals or noise that enter the system, affecting its performance and integrity. This intrusion can originate from various external sources such as electromagnetic interference, radio frequency interference, or even physical disturbances.

The term highlights an important aspect of maintaining system quality, as ingress can significantly degrade the quality of the intended communication signals. By understanding ingress, technicians can implement measures to minimize its impact, ensuring cleaner and more reliable communication.

Options such as high-bandwidth data transfer, signal encryption, and system performance metrics pertain to other aspects of communication systems but do not define the phenomenon of ingress, making the chosen answer the most appropriate in capturing the essence of what ingress signifies in this context.