Table of Contents
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Scope
This manual describes how to install and operate the SpectraComm 553 Fractional T1 Data Service
Unit. The information contained in this manual has been carefully checked and is believed to be
entirely reliable. However, as General DataComm improves the reliability, function, and design of
their products, it is possible that information may not be current. Contact General DataComm for
updated information on this or other General DataComm products.
General DataComm, Inc.
Technical Publications Department
6 Rubber Avenue
Naugatuck, Connecticut, USA 06770
Tel: 1 203 729-0271
Manual Organization
The online (web-based) manual uses active areas which allow you to navigate through portions of
the manual by clicking on any blue text.
This manual is divided into the following chapters:
Chapter 1, System Description
Chapter 2, Installation and Setup
Chapter 3, Operation
Chapter 4, Tests
Appendix A, Technical Characteristics
Appendix B, Interface Signals
Appendix C, Alarm Definitions
Appendix D, Timing Options
076R155-000
Issue 7
SpectraComm 553 Fractional T1 DSU
Installation and Operation Manual
Preface
i
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Table of Contents
