Relay Calls and TTYs. Ball State University welcomes communication from individuals who are deaf or hard of hearing. The best way to contact the University is through Relay Indiana (http://relayindiana.com/). Every office on campus is able to receive Relay calls. Though TTYs are now rarely used, the University Switchboard and the Disability Services office maintain TTYs. The Switchboard’s TTY number is 765-285-2201, and Disability Services’ TTY number is 765-285-2206.