As used in this act [ 28-11A-1 to 28-11A-3 NMSA 1978]:
A. "deaf person" means any person whose hearing is totally impaired or whose hearing is so seriously impaired as to prohibit him from understanding telephonic voice communications; and
B. "telecommunication device for the deaf " means a teletypewriter or other instrument for telecommunication in which speaking or hearing is not required for communication.