Video-conferencing and videophones

Video-conferencing is the technique for enabling two-way video, audio and data signals, at relatively low quality, to be used for live interaction over a communications circuit. Video-conferencing is used either on a one-to-one basis, or by groups of people who gather in a specific setting (often a conference room) to communicate with others. As mentioned earlier, we have seen the development of ruggedized video-conferencing units designed for newsgathering to be used in the field – the videophone.


The videophone is essentially a video-conferencing unit adapted for field use. Certainly, the quality of transmission cannot match normal SNG equipment, but the videophone’s key advantage is that it is ...

Get Introduction to SNG and ENG Microwave now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.