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About This Book
This book contains descriptive information about the IBM 3708 Network
Conversion Unit. It describes the 3708, its advantages, operating modes, and
hardware and software requirements.
It is intended to be used by people who need an in-depth description of the 3708's
components and operation. To use the information, you should be familiar with the
following:
• American National Standard Code for Information Interchange (ASCII)
• Asynchronous (start-stop) devices
• IBM 3270 Information Display System
• Systems Network Architecture (SNA).
This book is not a standalone reference for planning, installing, and operating. It is
recommended that you read the information in the planning chapters of the IBM
3708 Network Conversion Unit Planning and Installation, GA27-3766, before
installing the 3708. For operational information, read IBM 3708 Network
Conversion Unit End-User Reference, GA27-3765.
How This Book Is Organized
This book contains eight chapters and six appendixes:
Chapter 1, "Introduction" introduces the 3708 and describes its components and
functions.
Chapter 2, "3708 Operation" describes areas of operation including: LED steady
states, configurations, logs, timers, and establishing and disconnecting a session.
Chapter 3, "SDLC and SNA Communication" provides information about
establishing host-to-3708 communication using SNA protocols.
Chapter 4, "Protocol Conversion Mode" describes the 3708's protocol conversion
mode of operation.
Chapter 5, "3708 Protocol Enveloping Mode" describes the 3708's protocol
enveloping mode of operation.
Chapter 6, "ASCII Pass-Through Mode" describes the 3708's ASCII Pll;ss-through
mode of operation.
Chapter 7, "Nonstandard Operations" describes the nonstandard operating bits field
of the General Definition screen.
Chapter 8, "Network Management and Problem Determination" discusses the 3708's
Communication Network Management support.
Appendix A, "Host Considerations" provides consideration and restriction
information for host support of the 3708.
Appendix B, "3708 Security" discusses the 3708's security features.
About This Book
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