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Telecommunications Access

Teletypewriters (TTYs)

Teletypewriters (TTYs), sometimes referred to as Telephone Devices for the Deaf (TDD), are used by people who are deaf or hard of hearing to communicate by telephone. TTYs are equipped with a small keyboard and display monitor so that users communicate by written conversation. The following University offices have a departmental TTY and their phone numbers and maps for these locations are listed below:

Office of Accessible Education
TTY: (650) 723-1067
Voice: (650) 723-1066

Diversity & Access Office (ADA Compliance)
TTY: (650) 723-1216
Voice: (650) 725-0326

California Relay Service (CRS)

It is also possible for hearing persons to communicate with deaf or hard of hearing persons using the 24-hour California Relay Service (CRS). CRS operators transmit spoken and typed messages between TTY and voice callers, allowing people who use TTYs to communicate with other telephone users who do not have TTYs, and vice versa. Relay operators receive calls, speak the typed portion of the call to the non-TTY user, and type the spoken portion to the TTY user.

Voice to TTY: (800) 735-2922

If you don't have a TTY and want to call someone who does, call (800) 735-2922. Tell the operator the number you are calling. The operator will dial your call, then read to you what the TTY user types and type to them what you say.

TTY to Voice: (800) 735-2929

If you have a TTY and want to call someone who doesn't, call: (800) 735-2929. Similarly, the operator will assist in placing the call, and will transmit information by either typing or speaking to the parties involved.

CRS operators can also facilitate conversations with persons with speech impairments through Voice/Hearing Carryover (VCO/HCO). The person with normal speaking ability should converse as usual by addressing the non-speaking party directly. The speech-impaired person would converse by typing his/her part of the conversation; the CRS operator would then read it aloud to the other party.

For more information about accommodations for hearing or speaking disabled persons, please contact the California Relay's customer service line, at (800) 735-0373.