Telecommunication lines are physical pathways that transmit data and voice signals over distances. These lines can be made of various materials, including copper wires and fiber optic cables, which allow for different types of communication, such as telephone calls and internet access. These lines connect homes, businesses, and mobile devices to telecommunication networks, enabling services like landline telephones, cellular networks, and broadband internet. The efficiency and speed of these lines are crucial for modern communication, supporting everything from everyday conversations to streaming services and online gaming.