<P> One of the first demonstrations of the ability for telecommunications to help sign language users communicate with each other occurred when AT&T's videophone (trademarked as the "Picturephone") was introduced to the public at the 1964 New York World's Fair--two deaf users were able to freely communicate with each other between the fair and another city . However, video communication did not become widely available until sufficient bandwidth for the high volume of video data became available in the early 2000s . </P> <P> The Internet now allows deaf people to talk via a video link, either with a special - purpose videophone designed for use with sign language or with "off - the - shelf" video services designed for use with broadband and an ordinary computer webcam . The special videophones that are designed for sign language communication may provide better quality than' off - the - shelf' services and may use data compression methods specifically designed to maximize the intelligibility of sign languages . Some advanced equipment enables a person to remotely control the other person's video camera, in order to zoom in and out or to point the camera better to understand the signing . </P> <P> In order to facilitate communication between deaf and hearing people, sign language interpreters are often used . Such activities involve considerable effort on the part of the interpreter, since sign languages are distinct natural languages with their own syntax, different from any spoken language . </P> <P> The interpretation flow is normally between a sign language and a spoken language that are customarily used in the same country, such as French Sign Language (LSF) and spoken French in France, Spanish Sign Language (LSE) to spoken Spanish in Spain, British Sign Language (BSL) and spoken English in the U.K., and American Sign Language (ASL) and spoken English in the USA and most of anglophone Canada (since BSL and ASL are distinct sign languages both used in English - speaking countries), etc . Sign language interpreters who can translate between signed and spoken languages that are not normally paired (such as between LSE and English), are also available, albeit less frequently . </P>

How to say how was work in sign language