5. Voice Carryover and Hearing Carryover
Voice carryover (VCO) is a communication hybrid of TTY and voice. With VCO, a person with hearing loss can speak directly to the call taker and read the response that is typed back.
Hearing carryover (HCO) allows a TTY user to type words on the TTY and hear call takers’ spoken responses through the handset.
Having equipment that can switch back and forth between voice mode and TTY mode is also necessary for VCO and HCO. These types of communication can shorten the length of calls that would otherwise be conducted exclusively by typing.
Both of these types of communication can be accomplished using standalone TTY equipment and alternating between speaking into the handset and placing the handset in the TTY when the caller (HCO) or call taker (VCO) types a response.
Who uses VCO and HCO?
VCO (voice carryover) is often used by persons who become deaf or hard of hearing later in life and prefer to speak instead of type.
HCO (hearing carryover) is often used by persons who are not deaf or hard of hearing but have speech disabilities.
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