AT命令文档，有详细的说明。英文的

一个很不错的语音电话源码-a very good voice source

LDPC编码的GFQ程序源代码，用于信道编码，可以编码LDPC矩阵，并进行交织译码-LDPC coding GFQ source code for channel coding, LDPC coding matrix, Decoding and intertwined

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.

MODEM编程，实现拨号，应答，通信。开发环境为VC6.0-MODEM programming, dial-up, response and communications. Development Environment for VC6.0

实现GPRS MODEM接发短信功能，同时可以进行GPRS数据传输，-GPRS MODEM realize message sending and receiving functions, at the same time can be GPRS data transmission,

这是一个完整的无线通讯工程，利用无线MODEM与外界交互。-This is a complete wireless communications engineering, the use of wireless MODEM interaction with the outside world.

开发gprs的AT命令文档，-Gprs development of the AT command document,

VB Modem编程及控件-VB Programming and Control Modem

语音电话高级编程。。大家可以参考一下。还行-Voice calls high-level programming. . We can refer to. Line also. .

一个USB源程序，很好用，修改一下就可用，