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Thanks for the feedback. I think I am better off to use this device to control my pc from my phone. I didn't know there are tty devices that let you talk at the same time as receiving messages. Thanks again, Rick

After a call is made the deaf person would be able to talk. The hearing person would then type using any telephone keypad. Using the letters on the keypad ei (21 = A, 22 = B, 23 = C, 31 = D, 32 = E :1st number is the number with the letter-2nd number is the position of the letter on the...

The reason I built this device is it works like something my Grandmother used for years. She was hard of hearing and like the fact that she could talk and not have to type at all and my aunt's would type to her. I made this to improve and customize some of the built in phases. I appreciate...

I recently built a device to listen to DTMF tones from a normal telephone. This captures digits and hands them to a computer. The computer looks for patterns (21 = A; 22=B ect.). This allows a person hard of hearing to see what the person on the other end of the phone is typing. They...