SIP: Session Initiation Protocol具体的讲解了rfc2543

生成2KHz和8KHz的混合信号，使该信号通过上述滤波器，观察滤波前后的波形变化和频谱分布情况。 在改信号中加入高斯白噪声，观察滤波前后的波形变化和频谱分布情况。-2KHz and 8KHz generation mixed-signal, so that the signal through the above-mentioned filter, filter before and after observation of the waveform and spectrum distribution of the changes. Add to the signal in white Gaussian noise was observed before and after filtering the waveform and spectrum distribution of the changes.

pda,pocket pc 上的基于 .net compact framework serialport 的测试程序 c#编写-pda, pocket pc

ModSecurity is a web application firewall (WAF). With over 70% of attacks now carried out over the web application level, organisations need all the help they can get in making their systems secure. WAFs are deployed to establish an increased external security layer to detect and/or prevent attacks before they reach web applications. ModSecurity provides protection from a range of attacks against web applications and allows for HTTP traffic monitoring and real-time analysis with little or no changes to existing infrastructure. 

利用自回归模型产生Rayleigh率落信道-use of regression models have Rayleigh rate charged Channel

这是个MATLAB教程，讲的挺详细的，挺综合，重点突出，适合初学者看。-This is a MATLAB tutorial, speak very detailed, very comprehensive, focused and look for beginners.

通信协议的解析和分析，主要是看它的校验码。-Analysis of communication protocols and analysis, mainly to look at its validation code.

上网计时的程序，可以知道上网用了多长时间，记录并显示出来。-Internet time the procedure can use the Internet to know how long the record and displayed.

本文简单介绍了OSI 抽象语法符号（ASN.1）的子集――基本编码规则（BER）和可辨别编码规则（DER）。-This article briefly introduced symbols OSI abstract syntax (ASN.1) subset- Basic Encoding Rules (BER) and the identifiable coding rules (DER).

关于3G基站的培训，现在正在搞TD，应该对大家有用处。-3G base stations on the training, are now engaged in TD, everyone should have usefulness.

高速串口通信程序，可同时接16个串口进行通信；获得16各串口的通信数据，在VC6.0++中编译，主要有串口通信参数设置，高速串口通信配置信息。 内部包括IP地址设置、共享内存、UDP通信等功能；读取串口上的数据进行解析，解析后的数据写入共享内存中，通过UDP通信通知上级主站去读取共享内存中的数据。