High Quality Content by WIKIPEDIA articles! A videophone is a telephone with a video screen, and is capable of full duplex (bi-directional) video and audio transmissions for communication between people in real-time. At the dawn of the technology, videotelephony also included image phones which would exchange still images between units every few seconds over conventional POTS-type telephone lines, essentially the same as slow scan TV systems. Currently videophones are particularly useful to the deaf and speech-impaired who can use them with sign language and with a video relay service, and also to those with mobility issues or those who are located in distant places and are in need of telemedical or tele-educational services.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.