2.1. About the Demo
The IP Gateway (Global Call) demo is a host-based application that demonstrates using the Global Call API to build a PSTN_IP gateway. The demo source code can be used as sample code for those who want to begin developing an application from a working application. The demo is not designed to implement a complete gateway, lacking features such as least-cost routing, etc.
The IP Gateway (Global Call) demo is a cross-OS demo, running under the Windows or Linux environments. Most of the differences in the environments are handled directly by the programming interface and are transparent to the user. Other differences, due to inherent differences in the operating systems, are handled by the Platform Dependency Library (PDL).
For more information about the PDL refer to the source code in the pdl_win or pdl_linux directories.
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