What are TTY, TDD, and the 711 Relay Service?
TTY and TDD stand for a group of telecommunication devices that make it easier for deaf, hard of hearing, and speech-impaired persons to communicate over telephone lines. TTY stands for teletypewriter, or text phone. TDD stands for Telecommunications Device for the Deaf. 711 Relay is a service that operates similarly to 411. An operator assists in the completion of a call involving a teletypewriter. The Federal Communications Commission (FCC) has developed a fact sheet on Telecommunications Relay Services which explains TTY, TDD, and 711 Relay. Ask Outreach Services for more information about these services.