详细介绍了Modem和PC机之间的通讯原理、方法，以及编程实例-detail the modem and PC communication between the principles, methods and programming examples. .

在vc下编写得moden远程传输例程，便于熟悉AT指令集以及在WIN下对串口的操作-This is a example about moden for communication,this would make the AT command easy under WIN OS.