Win32API串口编程虚拟终端的一个源代码，可以用于对modem的控制，写自己的API程序是可以参考。,Win32API programming virtual serial port terminal, a source code, can be used for modem control API to write their own procedures are for reference.

VB的MODEM通信源代码，包括MODEM初始化，自动检测电脑串口数量，MODEM参数设置等-VB source code for the MODEM communications, including MODEM initialization, the computer automatically detects the serial number, MODEM parameter setting, etc.