The FCC now requires all new and replacement hospital room telephones to have volume control. The following was reprinted from the FCC website at: http://www.fcc.gov/Bureaus/Common_Carrier/FAQ/faq_hac.html
When must all room telephones in confined settings, such as hospitals and nursing homes, be HAC?(Hearing aid compatible)
All confined settings, such as hospitals or nursing homes, with over 50 beds must have HAC telephones in all patient rooms at present. Those establishments with less than 50 beds must have HAC telephones in all patient rooms by November 1, 1998.
Also, any time a telephone is replaced or newly purchased, the confined setting owner must ensure that the new telephone is HAC. Any time a telephone is replaced or newly purchased after January 1, 2000, the confined setting owner must also ensure that the telephone has volume control.