© 1991 AT&T

All Rights Reserved

Printed in USA

NOTICE

While reasonable effort was made to ensure that the information in this document was complete at the time of printing, AT&T cannot assume responsibility for any errors. Changes and/or corrections to the information contained in this document may be incorporated into future issues.

TRADEMARK NOTICE

UNIX is a registered trademark of UNIX System Laboratories, Inc.

DEFINITY is a registered trademark of AT&T

AUDIX is a trademark of AT&T.

FCC WARNING STATEMENT

Federal Communications Commission (FCC) Rules require that you be notified of the following:

This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manuals, may cause interference to radio communications.

It has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against interference when operated in a commercial environment.

Operation of this equipment in a residential area is likely to cause interference, in which case the user at his own expense will be required to take whatever measures may be required to correct the interference.

SECURITY

AT&T does not warrant that this product will prevent, and AT&T will not be responsible for, unauthorized use (or charges for such use) of common carrier telecommunication services or facilities accessed through or connected to this product. The customer has the responsibility for administering this product to prevent such unauthorized use. Therefore it is necessary that the person to whom the customer assigns this responsibility read all documents associated with this product and understand the product features that enable the administrator to reduce exposure to unauthorized use.

ORDERING INFORMATION

To order copies of this manual:

Contact: Your AT&T Account Team or AT&T Authorized Dealer or

Call: AT&T at 1-800-432-6600 or

Write: AT&T Customer Information Center P.O. Box 19901

Indianapolis, Indiana 46219

Order: Document No. 585-310-010

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AT&T 2.1.1 manual 1991 AT&T All Rights Reserved, Trademark Notice