TTY

Text Telephone / Teletype Terminal / TeleTYpewriter. Telecommunication Device for the Deaf. A TTY is a special device that lets people who are deaf, hard of hearing, or speech-impaired use the telephone to communicate, by allowing them to type text messages.

Illinois – (800) 526-0844 (TTY)
Illinois – (800) 526-0857 (Voice/TTY)
Missouri – (800) 735-2966 (TTY)
Missouri – (800) 735-2466(Voice)