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Ultratec, Inc.
450 Science Drive
Madison, WI 53711
(608) 238-5400 (Voice/TTY)
Fax: (608) 238-3008
Email: service
@
ultratec.com
www.ultratec.com
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.
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.
Dr. Robert H. Weitbrecht,
1920-1983, inventor of the
first text telephone modem.