实现VB下的自己编写ping代码，绝对不容错过！

三种模拟调制与解调的算法，三种模拟调制为：AM，FM，SSB-Three types of analog modulation and demodulation algorithms, three types of analog modulation for: AM, FM, SSB

VB 通信开发源代码例子 聊天客户端，服务器端代码-VB source code examples Chat client and server code

七号信令原理（中文）-SS7 Principle (Chinese)

H.323 2000年规范的文档，是H.323 V4的标准，这是目前最通用的版本，是学习开发H.323的必备材料。-2000 H.323 standard documents, is the standard H.323 V4, which is currently the most common form, is to study the development of the requisite material H.323.

这是一篇关于分布式会议的实现的文章,你可以通过sip的扩展功能来实现会议功能,还有P2P协议的参与-This is a conference on Distributed on the realization of the article, you can sip through the extensions to the realization, but also the participation agreement P2P

各种L2数据网具有不同的通信协议与帧结构，其网络节点设备可以是各种类型的数据交换机（X.25、FR、Ethernet和ATM等分组交换机）；而L3数据网（IP网或internet）具有统一的TCP/IP通信协议和分组结构，全网采用统一格式的IP地址， 节点设备统一采用面向无连接的路由器。为便于理解，我们可以将L3数据网简单地理解为构建在L2数据网平台上的一个路由器网。-L2 data network with a variety of different communication protocol and frame structure, the network node device can be of various types of data switches (X.25, FR, Ethernet and ATM packet switches, etc.) and L3 data network (IP network or internet) have a unified TCP/IP communication protocol and packet structure, the whole network using a unified format for the IP address, node equipment reunification-oriented connectionless router. In order to facilitate understanding, we can L3 data network simply interpreted as a data network built on the L2 platform for a network router.

拨号程序-a dialing program

MScomm端口控制-MScomm port control

两天线的通信系统，包括空时码的编解码程序，以及与HARQ结合的传输方案代码，信道为准静止的瑞丽衰落信道-Line a two-day communications systems, including space-time code codec procedures, as well as combined with the HARQ transmission program code, channel, whichever is Ruili static fading channel

iic 接口程序，主从控制，可切换的，VHDL 代码，该代码接口定义清晰，使用方便，只需要例化顶层模块，就完成该代码的硬件集成，希望对做硬件的朋友有帮助