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© 1991 AT&T
All Rights Reserved
Printed in USA
While reasonable effort was made to ensure that the information in this document was
complete and accurate at the time of printing, AT&T can not assume responsibility for any
errors. Changes and/or corrections to the information contained in this document may be
incorporated into future issues.
TRADEMARK NOTICE
AUDIX is a trademark of AT&T.
DATAPHONE, DEFINITY, DIMENSION, and UNIX are registered trademarks of AT&T.
ORDERING INFORMATION
To order copies of this document:
Call:
AT&T Customer Information Center at 1 800 432-6600
In Canada call 1 800 255-1242
Write: AT&T Customer Information Center
2855 North Franklin Road
P.O. Box 19901
Indianapolis, Indiana 46219-1385
Order:
Document No. 555-025-400
Issue 2, October 1991
Published by
Technical Publications
AT&T Bell Laboratories