Hearing Carry-Over (HCO)
Dial 711 or 800-722-0353
Hearing Carry-Over allows speech-disabled users with hearing to listen to the person they are calling. The HCO user types his/her conversation for the Communication Assistant to read to the standard telephone user.
HCO to TTY
Dial 711 or 800-722-0353
The HCO user listens while the Communication Assistant voices the TTY user's typed message. The HCO user types his/her conversation directly to the TTY user.
HCO to HCO
Dial 711 or 800-722-0353
The HCO user may contact other HCO users through Oklahoma Relay. The Communication Assistant will voice to both parties what is typed on each user's TTY.