A modem is a device that allows computers to transmit data over analog transmission mediums like telephone lines or cable networks. Modems can encode digital data into analog signals and decode it back again at the receiving end of the connection.
Modems are often confused for routers, but they serve different (albeit complimentary) roles. A router connects devices together to form a network. This router is connected to a modem, which connects the network to an internet service provider (ISP) and the broader internet. In practice, router and modem functions are frequently integrated into a single device known as a “gateway.”
See also: DSLAM, area border router, customer edge router, default gateway
We value your privacy