This a Delphi implementation of the Windows Telephony headers. There s a test program that can monitor calls made with other TAPI enabled programs like Remote Access and can also dial calls. Also there s a mini-terminal that shows how to use TA

CDT规约报文监视,用于电力CDT规约报文的监视及解析功能，非常实用,Message Statute CDT monitor, the Statute for electricity CDT Message surveillance and analytic functions, very useful

Great dialup/gprs connection monitor.

串口监听源码,实现串口即时接收显示功能，含所有原代码-Serial Port Monitor tools