A TTY (Teletypewriter) is a device or application used to send or receive character by character communication using Baudot signaling.
Also known as:
TDD (Telecommunications Device for the Deaf)
A method of connecting a TTY directly into the phone line. When using direct connect, you can dial directly from the keyboard and use auto-answer features.
TTY functionality that has been integrated within a computer workstation. This may be found within the 9‑1‑1 telephony system or interfaced in a CAD (computer aided dispatch) system.
Relevant NENA Documents
- NENA-STA-027, E9-1-1 PSAP Equipment Standards
- NENA-STA-010, NENA i3 Standard for Next Generation 9-1-1
- APCO/NENA ANS 3.105.1-2015, Minimum Training Standard for TTY/TDD Use in the Public Safety Communications Center