Videoconferencing (VC) is the conduct of a videoconference by a set of telecommunication technologies which allow two or more locations to communicate by simultaneous two-way video and audio transmissions. It has also been called ‘visual collaboration’ and is a type of groupware.

The components required for a videoconferencing system include:

  • Video input : video camera or webcam
  • Video output  :computer monitor, television or projector
  • Audio input  :microphones, CD/DVD player, cassette player, or any other source of PreAmp audio outlet.
  • Audio output : usuallyloudspeakers associated with the display device or telephone
  • Data transfer : analog or digital telephone network,LAN or Internet
  • Computer : a data processing unit that ties together the other components, does the compressing and decompressing, and initiates and maintains the data linkage via the network.