Videoconferencing (VC)

Videoconferencing refers to the technology wherein people can communicate, not only with voice, but also with video. Videoconferencing has largely been popular only over ISDN networks using a protocol like H.320. More recently, IP-based networks have opened the door to newer protocols, including H.323 and SIP.

Videoconferencing systems have traditionally been room-based systems that were relatively expensive. More recently, though, less-expensive desktop systems and even video-enabled IP-phones are gaining popularity. Use of the personal computer is not uncommon for videoconferencing applications.