Section 508 - ICT Accessibility (Revised)
Chapter 4: Hardware – Section 508 - ICT Accessibility (Revised)

Section 508 - ICT Accessibility (Revised) 412.8: Legacy TTY support

What does 412.8 require?

Two-way voice ICT without built-in TTY functionality provides a standard non-acoustic TTY connection point (412.8.1), a microphone that can be switched on and off for voice and hearing carry over (412.8.2), support for all commonly used cross-manufacturer non-proprietary TTY signal protocols where it interoperates with the PSTN (412.8.3), and voicemail, auto-attendant, IVR and caller ID usable with a TTY (412.8.4).

Maintained by Gerard BlokdykVerified against the published standard Control text last updated

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