In adopting this Report and Order, the Commission amends its rules to require that, either at specific dates in the future or on a phased-in basis, all telephones in workplaces, confined settings (such as hospitals and nursing homes), and hotels and motels be hearing aid compatible; have volume control; and have the letters HAC affixed to them.
All telephones in workplaces, confined settings, and hotels/motels must be hearing aid compatible, have volume control, and have the letters HAC affixed to them. 
The Commission currently has no rules dictating the volume control or hearing aid compatibility of telephones. 