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How Does Video Conferencing Work?

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During a videoconference, there is a camera located at each site. At each site the camera is generating video signal. This video is made up of several individual picture frames, which are made up of two fields. During the time of transmit ion, the fields are separated and then combined again at the reception of the monitor on the other end. The more frames that are received by the monitor, the more fluid the video will be.
There are several devices that are used in order to make videoconferencing possible. Some of these devices are as follows:

Codec: This device is used to compress the picture, sound, and extra data to minimize network costs and maximize reception quality.
ISDN (also known as OnRamp): This is the most common network that is used to pass video along from one site to another.
Full Duplex: This is a term used to describe the mode that videoconferencing is set on. This makes it possible for all participants to interact at the same time. This makes the conference less like using a walkie-talkie and more like a telephone call with video.

Initiating a videoconference is much like making a telephone call. Once you have made a connection, you will see video of the person you are talking to. Once you see the video, say hello and start your meeting.

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