Modem

What is Modem and describe its feature.

Modem stands for modulation and demodulation. Modulation means convert digital signal into analog signal, and demodulation means convert digital signal into analog signal.

Feature of modem

Some feature of modem are as follows:

• Speed: Speed is the rate at which the modem can send data in bps. Typically modem speeds are 300 bps to 56 kbps.
• Self-Testing: Modem can test the digital connection with computer. It can also test analog connection with remote modem.
• Voice over Data: Modem provides the facility of voice conversation while data is being transmitted.
• Error Control: Modems use different methods to control errors for transmitted data.