This 1995 photograph depicted a telephone receiver handset that had been equipped with a volume control, as well as the universal symbol for sound waves radiating on the handle in plan view. Volume controls are beneficial not only to the hearing impaired, but to those with normal hearing who might be making use of the telephone in a noisy environment, such as a city street.'The Center for Universal Design, CUD, is a national research, information, and technical assistance center that evaluates, develops, and promotes universal design in housing, public and commercial facilities, and related products.'
CDC/ Richard Duncan, MRP, Sr. Proj. Mngr, North Carolina State University, The Center for Universal Design (CUD)
November 3, 2012