Videoconferencing is a technology used to hold a meeting among people at remote locations by means of transmitted audio and video signals.

• Videoconferencing Codec Unit: The codec takes the video and audio from the camera and microphone and compresses it down, transmits it over a network/digital phone line and expands the incoming video and audio signal so that it can be viewed on a display.

• Camera: Most conferencing systems include a video camera with pan-tilt zoom lens that has remote control capabilities. The camera captures the present video image and sends the picture to the codec to be delivered to the far end.

• Microphone: The built-in microphone captures audio and sends the information to the codec to be delivered to the distant end.

• Video Monitor, XGA Computer, Plasma Display Monitor, LCD/DLP Projector: These display devices are options that can be used to show the images received from the videoconferencing codec.

• Network Connection: This is the connection that carries data between video systems communicating with one another. The size of the connection and the ability to access it in a consistent manner, determines both video performance and quality of service.