OSI/MHS Gateway Programmatic Interface (GPI) Programming Guide

About This Manual
OSI/MHS Gateway Programmatic Interface (GPI) Programming Guide—424822-001
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What Related Publications Are Available?
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Appendix C, Review of X.400 and OSI/MHS, is a brief review of key X.400 and
OSI/MHS concepts. For programmers new to networking, it provides a quick
orientation to the GPI gateway environment.
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Appendix D, EDI Concepts, provides a quick orientation to GPI support of EDI.
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Glossary contains definitions of GPI terms used in this guide and in related
OSI/MHS manuals. Glossary terms are in boldface type the first time they appear in
the text of this guide.
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Abbreviations contains descriptions of the abbreviations used in this guide.
What Related Publications Are Available?
The most closely related manual, the OSI/MHS Gateway Programmatic Interface (GPI)
Reference Manual, provides formal, detailed descriptions of the language architecture,
procedure syntax, return codes, data structures and constants used by the GPI. Other
related publications fall into three categories: documents prepared by standards groups,
Compaq programming manuals, and other Compaq OSI/MHS manuals.
Documents Prepared by Standards Groups
To obtain the most current and definitive information about the API, refer to the X.400
Application Program Interface Association (XAPIA) and X/Open Company Limited
specifications and the International Telegraph and Telephone Consultative Committee
(CCITT) recommendations listed below:
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CCITT Blue Book (Volume VIII - Fascicle VIII.7, Data Communications Networks,
Message Handling Systems), Recommendations X.400-X.420 provide the most
detailed descriptions of elements of the MHS service, message transfer protocol, and
interpersonal messaging protocol (for the X.400 1988 standard). In this manual, the
title of this document is abbreviated to Recommendations X.400-X.420 (1988).
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CCITT Recommendation X.435 (Message Handling Systems: Electronic Data
Interchange) provides descriptions of elements of the MHS service that relate to
electronic data interchange messaging (EDIMG).
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X.400 API Association and X/Open Company Limited, X.400 API Specification,
Version 2.0, © 1989-1990 provides descriptions of object classes and attribute
types (for the X.400 1984 and 1988 standards).
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X.400 API Association and X/Open Company Limited, OSI Object Management
API Specification describes the object management API functions.
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X.400 API Association and X/Open Company Limited, EDI Messaging Package
Specification, © 1991 describes the electronic data interchange API functions.
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X.400 API Association, X.400 Gateway API Specification, Version 4.0 (20 June,
1989) provides descriptions of the Gateway API functions, object classes, and
attribute types (for the X.400 1984 standard). In this manual, the title of this
document is referred to as the XAPIA-1984 specification.