A modem is a network device that both modulates and demodulates analog carrier signals (called sine waves) for encoding and decoding digital information for processing. Modems accomplish both of these tasks simultaneously
What Is The Difference Between a Modem And a Router? | HP® Tech Takes
What is a Modem (Modulator/Demodulator)?
Proxy
What is Modem? and Difference between Router vs Modem | IoTDunia
Cable Modem - Computer Notes
This is a diagram of a network for the internet | Networking, Modem router, Dsl router