一个最新版本的SIP协议栈，大家可以看看，学习一下

一个电信增值业务的关于IVR平台编程的说明-a value-added telecom services on the IVR platform programming note

微软亚洲研究院论文：有线无线网络视频组播中差错保护的最优分配-Microsoft Asia Research Institute Papers : wired and wireless networks Multicast Video Error protection optimal allocation

本文介绍一种新型的基于消息队列的重复型服务器通信软件的设计方法,不同于并发型服务器和一般的重复型服务器通信软件，这种新的软件具有生成的子进程数少的优点，并且轻易对客户机与服务器的连接进行治理，适用于客户机数量较多和随机数据通信的情况，能够有效地提高服务器的运行效率。 -This article describes a new type of duplication based on the message queue server-based communication software design methods, and hair is different from the server and repeat the general type of server software, this new generation of software with a subset of a few of the advantages of the process, and easily client and server for the connection management, applicable to the client a larger number and random data communications, can effectively improve the efficiency of servers.

在dos环境下用汇编语言写的clock程序，包括许多中断处理-dos environment in assembly language to write the clock procedures, including many interrupt handling

完整串口通信程序Vc++源代码,适合初学着，在win2k,xp下调试通过。-Integrity of the serial communication program Vc++ Source code, suitable for beginners, and in win2k, xp adopted under the debugger.

多FFT解调可与相干或差动相干检测可以应用。差异相干检测可能对时变信道的优点，其中相干检测患有通道  估计误差。最好是在频域中执行的差分编码，即在整个OFDM载波。在可供下载的源代码包在http://millitsa.coe.neu.edu/?q=projects，多FFT解调与差分相干检测和多个接收元件（空间分集）来实现。

FD30调频无线对讲机 电路原理图 很难得的资料！-FD30 FM wireless intercom circuit diagram of information hard to come by!

TCP 聊天程序服务器端，详细讲述开发过程和理论依据-TCP chat sever side, describe detailedly of the development process and theory base.

中国专利联合开发投资网应投资商要求在全国范围征集节能、环保、具有显著市场开发潜力的专利项目投资开发。 请收到此通知的专利权人，尽快将专利项目介绍、专利授权-Net investment in joint development of China" s patent should invest in energy-saving operators have asked for collection at the national level, environmental protection, has significant market potential for development of proprietary investment and development projects. Please receive this notification, the patentee, the patent as soon as possible the project presentations, patents ...

vb + PC机与GSM modem 短信模块串口通信-vb+ PC machine message with the GSM modem serial communication module