In telecommunications, a network is any connection of two or more computers that enables them to communicate. Networks may include transmission devices, servers, cables, routers and satellites. The phone network is the total infrastructure for transmitting phone messages.
"Wired" and "Wireless" Networks
The advantages of "wired" networks over "wireless" ones include increased security and faster speeds. The advantages of "wireless" networks over "wired" ones include convenience.
The excessive use of radio technology brings the issue of radiation to mind. RF radiation burns skin tissue, and some studies claim it can cause cancer. There are similar complaints with regard to cellular phones.