The Free On-line Dictionary of Computing (30 December 2018):
video conferencingA discussion between two or more groups of people who are in different places but can see and hear each other using electronic communications. Pictures and sound are carried by the telecommunication network and such conferences can take place across the world. To overcome the bandwidth and latency limitations of current networks (especially the PSTN), some form of video compression is often used. (1995-05-01)