If you can speak but not hear, then Speak and Read is your best call option.
In other words you prefer to use your own voice, but want to read the responses from the person you are talking to on your TTY. This call option is also known as "voice carry-over".
How it works
The relay officer types everything the other person says to you for you to read, but you continue to talk knowing the other person can hear you directly.
Speak and Read calls A4 factsheet. For those who have trouble hearing on the phone but who can use their own voice. See how to use the National Relay Service to make Speak and Read calls. view the PDF
I work in a law firm, but because I'm hard of hearing I have trouble using a normal telephone. The relay service makes using a phone easy. I don't know how I ever lived without it.
How it works 
