Dr. Robert H. Weitbrecht, 1920–1983, inventor of the first TTY modem.

ACKNOWLEDGEMENT

In 1963, Dr. Robert H.Weitbrecht, an American physicist who was deaf, de- veloped 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 micro- computer 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)238-5400 (Voice/TTY) Fax: (608) 238-3008

Email: service@ultratec.com www.ultratec.com

First Edition

August 2002

First Printing

© 2002 Ultratec, Inc.

and Turbo Code are registered trademarks of Ultratec, Inc. Superprint Pro80, E-Turbo and Auto ID are trademarks of Ultratec, Inc.

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Ultratec PRO80TM manual Acknowledgement, First Edition August First Printing Ultratec, Inc