Voice Carry-Over (VCO) allows hard-of-hearing users to speak directly to a hearing person. When the hearing person speaks to you, a Communication Assistant (CA) will serve as your "ears" and type everything said to you on a TTY or text display.


  • Dial 7-1-1 and let the operator know that you would like to use VCO service.


  • Tennessee Relay will answer with "8234" (for CA identification), "F" or "M" (for CA gender) and "VCO OR TYPE NOW GA."


  • Voice or type the area code and telephone number of the party you want to call.


  • The CA will type the message "VOICE NOW" to you as your cue to start speaking. You speak directly to the hearing person. The CA will not repeat what you say, but only type to you what the hearing person says. You both need to say "GA" at the end of your response.


The CA specializes in all types of VCO calls, such as VCO with Privacy, VCO to TTY, VCO to VCO, or Two-Line VCO. With this service, you no longer have to specify your call type to CA.




Do you need more information, or have a question or suggestion about our relay service?  Let us know! 


VCO with Privacy

Two-Line VCO

This is similar to the standard VCO feature. However, the CA will not hear the caller speaking through Tennessee Relay, and only type voiced responses back to the VCO user.

Two-line VCO allows a consumer with two telephone lines to use one line for speaking directly to a hearing person while the other line is used to receive the hearing person's typed responses at the same time. This feature provides a more natural flow of conversation without the pauses of single-line calls.


The CA will only type what you say to the TTY user you are calling. Whatever the TTY user types will go directly to your TTY or text display equipment for you to read. "GA" is needed for this type of call.


The CA will serve as both parties' "ears" and type not only what you say to your party but also what is said to you. "GA" is needed for this type of call.



Angie Officer
Sr. Program Manager
Tennessee Relay Service
Mailstop: VARESF0213
12524 Sunrise Valley Drive Reston, VA 20196

© 2020

Tennessee Relay Service is provided
by Tennessee Regulatory Authority