http://www.google.com/search?hl=en&q...=Google+Search
used by deaf people to communicate with normal people. If you have aim, send a message saying "call 1-xxx-xxx-xxx" (x= person's number) to :
"iprelay"
and an operator (usually in Minnesota), translates what you type on your computer to voice. they HAVE to say what ever you type.
Could this be it?