This is an interactive technology which allows users to communicate using a two way transmission of video and audio. As the word suggests it's been designed specifically for use at conferences and large meetings. Various technologies have over the years been used to achieve a videoconference, it first began by using a two way television set connected by cables, then by radio signals, after this telephone signals. The telephone signal transmission is the one typically used today, it has however taken many decades for the video and sound quality to come upto scratch. The cost of videoconferencing has lowered considerably in the the late 1990's and into the new century with the huge popularity of the Internet. It is therefore a fast-growing segment of the online computer industry. Present day mass online communication applications like MSN Messenger and Skype offer a videoconferencing service via the use of webcams, the quality maybe low but this is bound to improve. Some of the common communication standards used by this technology are G.723.1, G.726, G.729, G.7xx, H.323 and H.324.