Modem and Its Types

Modem stands for modulation and demodulation. It is a communication device used to transfer the data using telephone line. It converts analog signals into digital signals and vice versa.
  • It is a device that converts digital data into analog for transmission over analog network medium and then back to digital at the receiving end.
Modem are of different types:
  • Telephone (POTS - Plain Old Telephone Service)
  • DSL
  • Cable