一个学习AT指令的好东东，而且是中文的，十分详细。

这是我在学校做通信时留下的资料 希望能给你带来帮助-This is what I do in school to communicate the information to stay I hope you will help

modem通信编程技术-modem communications programming technology

Softdec including the function poly2trellis-Viterbi Algorithm in soft decision

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

iWebSMS2000是一个基于Web的短信平台 =============================================================================== 目前政府、企业信息化，对消息的获取提出了更加严格的要求，需要随时随地、不受 空间、时间、地点的限制；要求主动获取消息，要求能在节省成本，同时保证信息安全， 在这种情况下，本公司自行研制开发了基于Web方式的iWebSMS2000短信消息平台管理方案。 这个方案是采用金格无线Modem作为短信收发设备，并在此基础上开发了金格短信服务器软 件和Web应用组件，支持JavaBean或COM调用方式，提供高可靠的扩展性，方便了政府、企 业和软件开发商应用集成。-iWebSMS2000 is a Web-based messaging platform =========== ======================================== =========================== government, corporate information, Access to information made more stringent requirements, the need anywhere from space, time and location constraints; Active demand access to information requests in cost savings, while ensuring the security of information, in this case, The company developed its own Web-based information to the SMS platform iWebSMS2000 management programs. The program is the use of lattice as a wireless modem SMS transceiver equipment, and on this basis the development of the lattice messaging server

zmodemclass的经典源码，原来旧的代码，有很多问题，比如文件名读取错误等，都已经被我修复。-zmodemclass classic source, the original old code has a lot of problems, such as the file name read error and so on, I have been repaired.

gprs协议栈代码.所谓协议栈就是对信息进行多次封装和解封的过程，以便能够在不同的实体间传送信息。本源代码来自Indian Institute of Technology-gprs protocol stack code. The so-called agreement is the right information Stack several Packaging, and the course was cleared, to the various entities to disseminate information. Source code from the Indian Institute of Technology

本程序需要调制解调器的支持，否则可能失败，需要调制解调器支持语音传输，本程序在子弹头调制解调器下调试通过，通话时通过麦克风和话筒来进行。-This procedure required the support of a modem, or may fail to support the required voice modem, the program under the debug modem bullet passed through a microphone and call for the microphone.

UART device driver for PC-to-PC communication using Null Modem Cable

该程序为QPSK解调程序，符号速率2M,采样速率为64M-The program procedures for QPSK demodulation, symbol rate of 2M, the sampling rate of 64M