电话应用编程接口的pas文件。 The directives can be controlled using the Tapi.inc include file which is included in both Tapi.pas and TSPI.pas.

利用TAPI函数建立拨打电话，实现：初始化线路，打开线路，呼叫，挂断呼叫，关闭线路-An example implementing voice call dialling. The functions include initializing a line device, opening a line, making a call, hang-on the call, and closing the line.