This code sample is named ExTAPI. It demonstrates the use of the Telephony API.
Navigate to the solution file (*.sln), and double-click it. By default, the solution files are copied to the following folders:
C:\Program Files\Windows Mobile 6.5.3 DTK\Samples\Common\CPP\Win32\CellCore\ExTAPI
Microsoft Visual Studio launches and loads the solution.
Build the solution (Ctrl+Shift+B).
Deploy the solution (F5).