这是一个语音通话的高级编程实例，适合有一定层次的C++爱好者学习-This is a voice call, programming examples, suitable for a certain level of C++ enthusiasts to learn

TSAPI协议资料及 C语言调用示例等。-This document specifies Telephony Services Application Programming Interface (TSAPI) services and C programming language syntax. TSAPI is compatible with Microsoft Windows, Microsoft Windows 95, Microsoft Windows NT, Novell