Telekommunikaatiojärjestelmät
Telecommunication, or telecommunications, refers to the transmission of information over distance by electronic means to enable communication between two or more parties. It covers voice, data, text, images, and video, transported across a range of media, including copper and fiber optic cables, wireless radio links, and satellites. The field combines engineering, computer science, and regulatory policy to provide global connectivity.
Key components include transmission media (copper, fiber, airwaves, satellite channels), signaling and modulation schemes, multiplexing and
Major network types worldwide include public switched telephone networks, broadband internet access, cellular networks (2G through
Historically, telecommunications began with telegraphy and telephony and expanded through radio, television, satellite, and the internet
The sector underpins modern economies and everyday life but faces challenges such as ensuring universal access,