Trademarks:

Ascend is a registered trademark of Ascend Communications, Inc. ISU is a trademark of ADTRAN, Incorporated.

Macintosh is a registered trademark of Apple Computer, Inc. Teleos is a registered trademark of Teleos Communications, Inc. Windows is a registered trademark of Microsoft corporation. 5ESS is a registered trademark of AT&T.

DMS-100 is a trademark of Northern Telecom.

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P.O. Box 140000

Huntsville, AL 35814-4000

Phone: (256) 963-8000

© 1998 ADTRAN, Inc.

All rights reserved.

Printed in USA.

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ADTRAN ISU 2X64 user manual Trademarks