
Copyright© 1991, AT&T
518-455-110
All Rights Reserved
Issue 1
Printed in U.S.A.
May 1991
Notice
Every effort was made to ensure that the information in this book was complete and accurate at
the time of printing. However, information is subject to change.
Federal Communications Commission (FCC) Interference Notice
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of FCC rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used
in accordance with the instruction manuals, may cause harmful interference, in which case the
user will have to correct the interference at his or her own expense. For additional FCC
interference, registration, and repair information, see Appendix E of this book.
Trademarks
MLS-6, MLS-12D, MLS-34D, and SYSTIMAX are trademarks of Lucent Technologies.
Magic on Hold, MERLIN, PagePac, and PARTNER are registered trademarks of Lucent
Technologies.
Warranty
AT&T provides a limited warranty for this product. Refer to “AT&T Limited Warranty and
Limitation of Liability” in Appendix C.
Ordering Information
The ordering number for this document is 518-455-210. To order copies of this book, call 1-800-
432-6600 in the U.S. and 1-800-255-1242 in Canada. For more information on how to order this
and other system reference materials, see “Reference Materials” in “About This Guide.” For
information on ordering replacement parts, accessories, and other compatible equipment, refer to
“Product Ordering Information” in Appendix C.
Support Telephone Numbers
In the U. S., AT&T provides a toll-free customer helpline 24 hours a day. Call the AT&T Helpline
at 1-800-628-2888 if you need assistance when installing, programming, or using your system.
For assistance in Canada, contact your local AT&T authorized dealer.
Intellectual property related to this product and registered to AT&T Corporation has been
transferred to Lucent Technologies Incorporated.
Any references within this text to American Telephone and Telegraph Corporation or AT&T
should be interpreted as references to Lucent Technologies Incorporated. The exception is cross
references to books published prior to December 31, 1996, which retain their original AT&T
titles.
Lucent Technologies—formed as a result of AT&T’s planned restructuring – designs, builds, and
delivers a wide range of public and private networks, communication systems and software,
consumer and business telephone systems, and microelectronic components. The world-renowned
Bell Laboratories is the research and development arm for the company.