Initializing TAPI

Before placing a call, an application must establish a means of communication between itself and TAPI. The application must select a telephony event notification mechanism, and specify this in a call to the lineInitializeEx function (see the description of this function for details on the available notification mechanisms). One of the values lineInitializeEx returns is the number of line devices available to the application. In this example, that number is one, and the line's ID in Telephony's zero-based scheme is 0. The application must establish this communication link (with lineInitializeEx) regardless of the type of call to be placed or received.

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