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Although not as widely used in everyday communications as audio-only and text communication, useful applications include sign language transmission for deaf and speech-impaired people, distance education, telemedicine, and overcoming mobility issues.

The development of advanced video codecs, more powerful CPUs, and high-bandwidth Internet telecommunication services in the late 1990s allowed videophones to provide high quality low-cost colour service between users almost anyplace in the world that the Internet is available.During the first manned space flights, NASA used two radio-frequency (UHF or VHF) video links, one in each direction.TV channels routinely use this type of videotelephony when reporting from distant locations.A number of organizations believed that videotelephony would be superior to plain voice communications.However video technology was to be deployed in analog television broadcasting long before it could become practical—or popular—for videophones.

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