The TapiComm sample uses both the Telephony API and the Win32 Communications API to demonstrate one way to implement a very simple TTY application. While the user interface and TTY emulation are very rudimentary, the TAPI and comm modules are fairly

tsp的一个简单例子，供需要写tsp的参考，源码来自windows telephony programming随书源代码-1. How do I write a TSP? The most common way to write a TSP is to take the source code for an existing TSP and use it as a template for writing a new one.