Organization of this Guide

This guide provides information for developing ISDN applications and details specific usage of Global Call functions in ISDN applications as follows:

• Chapter 1, Developing ISDN Applications, presents guidelines for developing ISDN applications.
• Chapter 2, Applying Global Call Functions to ISDN Applications, describes the additional functionality of specific Global Call functions used for developing ISDN applications.
• Chapter 3, Sequence of Function Calls in ISDN, provides asynchronous and synchronous programming models for using Global Call functions in ISDN applications.
• Chapter 4, ISDN-Specific Parameter Set Reference, provides information about the ISDN-specific parameter sets and parameter IDs used by Global Call.
• Chapter 5, Data Structure Reference, describes ISDN specific data structures and the elements of these data structures.
• Chapter 6, Protocols, describes the protocol conventions and programming considerations to be used when incorporating ISDN protocol(s) into your application.
• Chapter 7, Debugging Applications, describes the diagnostic tools available for debugging ISDN applications in a Global Call environment.
• Appendix A, "Establishing ISDN Connections", contains guidelines for establishing ISDN connections.
• Appendix B, "ISDN Call Scenarios", describes ISDN call scenarios for both asynchronous and synchronous applications.
• Appendix C, "BRI Supplemental Services", describes BRI supplemental services.
• Appendix D, "DPNSS IEs and Message Types", lists the information elements (IEs) and ISDN message types in the ISDN software library that support the DPNSS protocol.
• Appendix E, "DPNSS Call Scenarios", describes common call control scenarios when using the DPNSS protocol.

An index follows the appendices.

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