2. GDK System Architecture

About GDK for Windows

GDK consists of a fax channel and communication software, which provides many features and capabilities for fast, convenient fax transactions. Some of the standard features include:

• Sending one or more faxes to multiple locations (broadcasting)
• Sending files using binary file transfer (T.434)
• Recording the status of incoming and outgoing faxes
• Sending and receiving a fax on the same phone call (turnaround polling)
• Setting the fax transmission rate
• Delaying fax transmission
• Using T.30 subaddressing

The GDK system software provides the subsystems required to develop a fax application. The system software includes a fax subsystem compatible with Windows NT. The fax subsystem consists of the Dispatcher, the Queue file, the firmware, and the programming tools to control these components. The GDK contains the functions you need to build a fax application.

Figure 1. GDK Architecture

Refer to Chapter 5, "Programming Models", for a complete description of the base GDK functions.

Refer to Chapter 6, "Developing with PEB", for a description of the functions needed for PEB routing.

Refer to Chapter 7, "Developing with SCbus", for a description of the functions needed for SCbus routing.

Refer to Chapter 8, "Fax Status Files", for a description of GDK system status and configuration functions.

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