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HVO & VCO
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Hearing Carry Over(HCO) provides individuals with speech impairments that are not Deaf or Hard or hearing the ability to type their messages on a TTY device for the call takers and hear the call takers spoken responses or replies through their handsets.
Voice Carry Over (VCO) is a feature of the relay services that allow TTY users with good speech to talk, while using the TTY to read, as text, the incoming message or reply. This method can be accomplished by picking up the telephone handset to speak and replacing it in the TTY cradle each time to receive the typed message.
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