Products providing auditory output should provide the auditory signal at a standard signal level through an industry standard connector. External electronic access to all information and control mechanisms. The cross-industry standard port should not require manipulation of a connector by the user. Products providing a function allowing voice communication and which do not themselves provide a TTY functionality should provide a standard non-acoustic connection point for TTYs. It should also be possible for the user to easily turn any microphone on and off to allow the user to intermix speech with TTY use.
Information pass through.
Signal compression technologies should not remove information needed for access or should restore it upon decompression. 4.Information, documentation, and training Manufacturers should ensure access to information and documentation it provides to its customers. Such information and documentation includes user guides, installation guides for end-user installable devices, and product support communications, regarding both the product in general and the accessibility features of the product. Manufacturers should include in general product information the contact method for obtaining the information required by this section. Where manufacturers provide employee training, they should ensure it is appropriate to an employee's function.