This document provides an overview of videoconferencing, including its components, standards, equipment options, and various uses. It describes how videoconferencing allows transmission of audio and video between locations, and lists cameras, displays, microphones, and speakers as key components. Codecs compress the audio/video data, and networks are needed to transmit the signals. The H.323 standard enables videoconferencing over IP networks. Polycom is a leading equipment provider, with room and desktop systems available. Videoconferencing can be used for presentations, meetings, training, and more. Best practices like good lighting and minimizing distractions are discussed.