A telecommunications network is a system that allows for the transmission of data over distances. It connects various devices, such as phones, computers, and servers, enabling communication through voice, video, and text. These networks can be wired, using cables, or wireless, using radio waves, and they form the backbone of modern communication. Telecommunications networks consist of several components, including routers, switches, and transmitters. They can be categorized into different types, such as local area networks (LANs) for small areas and wide area networks (WANs) for larger regions. These networks are essential for services like the internet and mobile phone communication.