If you are hearing impaired and want to use your own voice while making a relay call, you should take advantage of Voice Carry Over, called V-C-O. First, dial the Relay Service for your state. When the representative asks, 'May I help you,' type the name and phone number of the person you want to call. The calling assistant will acknowledge, dial the number, announce the call and explain relay, if necessary. The calling assistant types what is said when the phone is answered, then types VCO (V-C-O) on GA (G-A), which means the Voice Carry Over is activated and you may 'go ahead' and speak. Pick up your handset and begin talking. After you finish, say, 'Go ahead,' and put down the handset. Watch your screen for a response. When the calling assistant types GA for 'go ahead,' it will be your turn to talk again. Repeat the last two steps until the conversation is completed. Some VCO technology allows you to connect your telephone and your keyboard to the telephone wall jack, eliminating the need to keep picking up the handset and replacing it during your conversation. Others let you speak without having to say, 'Go ahead.