Wireless communication is among technology’s biggest contributions to mankind. Wireless communication involves the transmission of information over a distance without help of wires, cables or any other forms of electrical conductors. The transmitted distance can be anywhere between a few meters (for example, a television’s remote control) and thousands of kilometres (for example, radio communication).
Definition – Telecommunications refers to the exchange of information by electronic and electrical means over a significant distance. A complete telecommunication arrangement is made up of two or more stations equipped with transmitter and receiver devices. A single co-arrangement of transmitters and receivers, called a transceiver, may also be used in many telecommunication stations.
Telecommunications devices include telephones, telegraph, radio, microwave communication arrangements, fiber optics, satellites and the Internet.
Telecommunications is also known as telecom.
Telecommunications is a universal term that is used for a vast range of information-transmitting technologies such as mobile phones, landlines, VoIP and broadcast networks.
In telecommunications, data is transmitted in the form of electrical signals known as carrier waves, which are modulated into analog or digital signals for transmitting information. Analog modulation such as that used in radio broadcasting is an amplitude modulation. Digital modulation is just an updated form of this.
Telecommunications and broadcasting are administered worldwide by an agency of the United Nations called the International Telecommunication Union (ITU). Most countries have their own agencies for enforcing telecommunications regulations.
International Telecommunication Union (ITU)
Definition – The International Telecommunication Union is a globally managed agency of the United Nations that is responsible for the development, management and standardisation of information and communication technology (ICT). The ITU collaborates and coordinates the use of satellite orbits and radio spectrum, the inter connectivity of different technologies, and the creation of ICT standards.
The ITU was formed to achieve global inter connectivity through the development and advancement of ICT-based equipment and technologies.
ITU interests and activities are distributed through the following key areas:
Radio communication Sector (ITU-R): Manages global radio communication, satellite orbits and derived technologies and services, such as wireless communication, broadband Internet, meteorology, TV broadcasting, and cellular communication
Telecommunication Development Sector (ITU-D): Organises ICT/telecom events, seminars and workshops and works with the industry to develop telecom products and solutions
Telecommunication Standardisation (ITU-T): Develops, implements and manages telecommunication standards