H.324 is an ITU-T recomendation for voice, video and data transmission over regular analog phone lines. It uses a regular 33,600 bit/s modems for transmission, the H.263 codec for video encoding and G.723 for audio. It is used in the Vialta Beamer BM-80 Phone Video Station and in several other videophones. The ITU Telecommunication Standardization Sector (ITU-T) coordinates standards for telecommunications on behalf of the International Telecommunication Union (ITU) and is based in Geneva, Switzerland. ... Voice Message refers to a message that could be sent to a destination using voice media. ... Look up Video in Wiktionary, the free dictionary. ... Data is the plural of datum. ... An analog circuit (or analogue circuit) is an electric circuit that operates on analog signals. ... Within phonetics, a phone is a speech sound or gesture considered as a physical event without regard to its place in the phonology of a language. ... A modem (a portmanteau word constructed from modulator and demodulator) is a device that modulates an analog carrier signal (sound), to encode digital information, and that also demodulates such a carrier signal to decode the transmitted information. ... H.263 is a video codec designed by the ITU-T as a low-bitrate encoding solution for videoconferencing. ... The word encoding has a number of meanings. ... This article is in need of attention from an expert on the subject. ... A videophone is a telephone which is capable of both audio and video duplex transmission. ...