Acknowledgement
In 1963, Dr. Robert H. Weitbrecht, an American physicist who was deaf, developed an acoustic coupler that could send and receive teletypewriter signals over the telephone lines. His invention, the Weitbrecht Modem, enabled people who are deaf to use the telephone for the first time.
While modern technology now makes it possible to build advanced microcomputer devices like your new Ultratec text telephone, the Weitbrecht modem remains the major technological breakthrough that began
telecommunications for the deaf. Ultratec wishes to acknowledge the importance of Dr. Weitbrecht’s contribution to the welfare of people who are deaf the world over.
Ultratec, Inc.
450 Science Drive
Madison, WI 53711
(608)
Fourth edition April 2002
First printing
© 1993-2002 Ultratec, Inc.
and Turbo Code are registered trademarks of Ultratec, Inc.
Miniprint 425, TTY Announcer and Auto ID are trademarks of Ultratec, Inc.
