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Communications system

Communications system

Communications system definition

A communications system is a collection of devices, software, and services that enable the transmission and reception of information between two or more parties. Communication systems include telephones, radios, emails, messaging apps, and social media platforms that can be used for voice communication, data transfer, video conferencing, and messaging.

See also: VoIP

How do communications systems work?

A communications system typically includes four main components: a transmitter, a receiver, a medium (or channel) for transmitting the data, and a protocol or set of rules governing the exchange of information.

  • The transmitter is responsible for converting the data or information into a form that can be sent over the selected channel.
  • The receiver then converts the data back into a form that can be understood by the recipient.
  • The channel used for transmission can be physical (a cable or fiber-optic line), or wireless (radio waves or satellite transmissions.)
  • The protocol governs the exchange of information between the transmitter and receiver, ensuring that the data is transmitted in a reliable and secure manner.

Communication protocol examples

  • TCP/IP (Transmission Control Protocol/Internet Protocol) is a set of rules used for transmitting data over the internet.
  • SMTP (Simple Mail Transfer Protocol) is used for sending and receiving email messages.
  • FTP (File Transfer Protocol) is a protocol used for transferring files over the internet.
  • Bluetooth is a protocol used for short-range wireless communication between devices.
  • GSM (Global System for Mobile Communications) is a protocol used for communicating over mobile phones.
  • VoIP (Voice over Internet Protocol) is used for transmitting voice calls over the internet.

Further reading

Ultimate digital security