about SIP(session initiation protocol).

GPRS数据传输，能够实现接收数据，发送数据。-GPRS data transmission, to achieve receive data, send data.

ppi协议分析，整理了ppi协议的读写格式，强制IO，一次读多条数据等内容-ppi protol

中兴-GPRS原理培训手册,文档详细描述了整个GPRS的构成架构及数据交换原理，希望对大家有用。-ZTE-GPRS principle of training manuals, documents GPRS is described in detail the composition of the whole structure and data exchange principle, useful for all of us hope.

VB 通讯编程方面的例子程序： 获取主机名和IP地址-communications VB Programming of examples : access to the host name and IP address

MARVELL processor mobile phone

能够像显示器一样显示红外线码的波型 可以读多达１５０种格式的红外线码 显示红外线码的时间非常准确，误差只有几个微秒。 -like to display showed that the wave infrared code-can read up to 150 infrared codes format shows red run time code is very accurate, error only a few microseconds.

TAPI 接受演示程序-TAPI accept Demonstration Program

这是我收集的几个通信基础理论的Matlab仿真实现，包括bpsk、qpsk、ofdm以及信号衰减和延迟的仿真。尽管不是我本人原创，但比较都经典。文件为*.m格式-This is my collection of several communications infrastructure theory Matlab Simulation, including BPSK, QPSK, and the OFDM signal attenuation and delay in the simulation. Although it was not my original, but more are classics. M*. document format

一个简单实用的串口通讯类-A simple and practical type of serial communication

RDA1846 SCH+ pic18f2552 USB电路原理图。有用和最适合于使用RDA1846和pic18f2552收发器。很简单的设计和构造。