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HCO allows a person who can hear but who has very limited or no speech capability to make and receive phone calls. Using HCO relay and a specially designed telephone with a text display, an HCO user can listen directly to the voice of the other person on the call and type his/her response to the CA, who voices the response to the other person. To use HCO relay you must have a TTY and a telephone.
Two-line HCO allows you to use one telephone line for listening directly to the other person, while the second line is used to type your response. This enhanced feature provides a more natural flow of conversation without the pauses of single-line HCO calls. For two-line HCO you must have two telephone lines with separate telephone numbers. For more information including a brochure and instructions, see column to the right.
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