Communication Networks correspond to a complete system of communications between user's terminals. Networks may be "point to point" (the transmission goes from a fixed origin to a fixed destination), "switched" (the transmission is switched so as to reach a single destination out of many) or "broadcast" (the transmission goes simultaneously to multiple destinations). Networks may be "public" (owned by an operator and open to any member of the public that subscribes) or "private" (owned or leased by an individual or company or group of companies exclusively for its own use).