Types of Signals and Their Conversion By Modem

Types of Signals and Their Conversion By Modem Most telecommunications involving personal computers make use of standard telephone lines at some point in their data transmission. But since computers have been developed to work with digital signals, their transmission presents a noncompatible signal problem. Digital signals are on/off electrical pulses grouped in a manner to represent data. Originally, telephone equipment was designed to carry only voice transmission and operated with a continuous electrical wave called an analog signal. In order for telephone lines to carry digital signals, a special piece of equipment called a modem (MOdulator/DE Modulator) is used to convert between digital and analog signals. Modems can be either external to the computer, and thus to be moved from one computer to another, or they can be internally mounted inside the computer.

Modems are always used in pairs. Both the receiving and transmitting modems must operate at the same speed. Multiple transmission speeds allow faster modems to reduce their speed to match that of a slower modem. The transmission rate and direction are determining factors that influence the speed, accuracy, and efficiency of telecommunications systems. Conclusion Telecommunications is one of the fastest-growing areas of technology in the world. Because of its rapid growth, businesses and individuals can access information at electronic speed from almost anywhere in the world. By including telecommunications in their operations, businesses can provide better services and products to their customers.