1. Developing ISDN Applications

This chapter offers advice and suggestions for programmers designing and coding GlobalCall applications in a Linux or Windows environment. Specific guidelines for developing ISDN applications are provided. Topics include the following:

• ISDN Features and Benefits
• ISDN Signaling Concepts
• GlobalCall Call Establishment
• Header Files
• Configuration and Resource Association
• Responding to ISDN Events
• ISDN Extension IDs
• GCEV_EXTENSION Events
• Run Time Configuration Management
• Service Request (BRI Only)
• Alarm Handling
• Error Handling - ISDN Cause Values
• ISDN-Specific Parameter Sets

Note: A multi-threaded application doing call control on SpringWare ISDN should have at most, one thread per device. In other words, two or more threads should not be used to make or receive calls on a single device, such as dtiB1T1.

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