A telephone exchange is a system that connects telephone calls by routing them through a network. It serves as a central hub where incoming and outgoing calls are managed, allowing users to communicate with each other. The exchange can be either manual, where operators connect calls, or automatic, using electronic switches to handle the connections. In modern telecommunications, telephone exchanges are crucial for managing large volumes of calls efficiently. They are part of the broader telecommunication infrastructure, which includes cables, satellites, and cell towers. This technology enables seamless communication across vast distances, making it essential for both personal and business interactions.