Voice Carry-Over, or VCO, is a Maryland Relay service for people who can speak clearly, yet have significant difficulty hearing what is being said over a standard telephone.
VCO-to-VCO and VCO-to-TTY calling options are also available. To learn more about making and receiving VCO calls, download detailed instructions now, or call 800-552-7724 or 410-767-6960 (Voice/TTY) or 443-453-5970 (Video Phone) to request VCO user training.
VCO users can ask their Maryland Relay Operator for VCO with Privacy when a call begins. With this feature, the Operator is unable to hear when the VCO user speaks to the other person.
This feature enables VCO users with two telephone lines to use one line for speaking directly to the other person, while the other line is used to receive the text responses. This allows the VCO user to interrupt the other person, and to experience a more natural, spontaneous call. Download detailed Two-Line VCO instructions.
VCO phones and other assistive telephone devices are available through the Maryland Accessible Telecommunications (MAT) program for qualified Maryland residents. Learn more about the MAT program.
Dial 7-1-1 or 888-826-9673
VCO Calling Instructions
Two-Line VCO Calling Instructions
Ameriphone VCO User Guide
Create a Customer Profile, a personal profile that automatically lets the Maryland Relay Operator know your communication preferences.
301 W. Preston Street, Suite 1008A Baltimore, MD 21201