209.261.  Definitions. — As used in sections 209.261 to 209.265, the following terms mean:

  (1)  "Auxiliary aids and services", the device or service that the deaf person feels would best serve him which includes, but is not limited to, interpreters, notetakers, transcription services, written materials, assistive listening devices, assistive listening systems, closed caption decoders, open and closed captioning, videotext display or other effective method of making aurally delivered materials available to individuals with hearing loss;

  (2)  "Deaf person", any person who, because of a hearing loss, is not able to discriminate speech when spoken in a normal conversational tone regardless of the use of amplification devices;

  (3)  "Person with a speech impairment", any person who, because of a speech disability, is not able to speak clearly or understandably in a normal conversational tone regardless of the use of assistive devices;

  (4)  "Relay agent", a person employed to relay conversations for a person who is deaf or speech impaired over a dual-party telephone system.