CMX868 MODEM remote communication source recommend that you refer to

Softdec including the function poly2trellis-Viterbi Algorithm in soft decision

一个封装的Modem AT命令操作类的快速拨号程序-A package of Modem AT command type of speed dial operation procedures

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.

设定固定的电话号码 ，自动拨打电话，接通你拨的电话号码-Set a fixed telephone number, auto-dial phone, dial the phone number connected to your

gsm ti35 at指令 用于串口调试-gsm ti35 at command for serial debugging

wavecom GPRS model AT pdf

利用MSComm控件，通过串口发送AT指令操作Modem。在2台计算机之间进行数据传输。-use MSComm control, sent through serial AT command operation Modem. In between the two computers for data transmission.

最简来电显示源代码,有注释,直接查出连接modem的串口-Simplest CND source code, a note found directly linking the serial modem

mc55上关于GPRS连接和测试的文本，使用AT命令实现测试 -mc55 on GPRS connection and testing of the text, use the AT command to test mc55 on GPRS connection and testing of the text, use the AT command to test

一个通过串口把PC机与MODEM连接的程序，可以拨号与发送短信-Serial put through a PC and modem connection procedures can dial-up and send a message