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| Term | Definition |
| Telecommunication | Communication between parties based in different locations by using a cable, telephone, broadcast or a telegraph. |
| Networking | Linking to or more computers together so that information and facilities can be shared. Computers in the same room may be linked together or the organisation may decide to link, computers in different parts of the world together. |
| Local Area Network (LAN) | Computers linked by a network without the use of telecommunications. Often the computers linked are based in the same location, group of buildings or site. |
| Wide Area Network (WAN) | Computers linked by a network using telecommunications. Often the computers linked are based in different locations. |
| Teleconferencing | Through the use of telecommunication devices such as video link participants based in different locations communicating is known as teleconferencing. |
| Electronic Data Interchange (EDI) | Computer networks used to exchange standard business transaction documents between organisations. |
