传输网络

SS7 is used in mobile, wireless networks and asynchronous transfer mode networks.

SS7 用于移动无线网络和异步传输模式网络。

ABSTRACT Asynchronous transfer mode is a rapidly emerging key transport mechanism of future multimedia networks.

作为未来多媒体网络的关键传输机制，ATM迅速崛起，已有的无处不在的无线网络正企图支持个人通信业务，这样势必导致无线ATM。

Since the China telecom industry introduced competition mechanism, mobile service providers have developed themselves at a tremendous speed. Meanwhile, fixed-line telecom service providers, including China Telecom and China Netcom, are facing severe challenges. The network services and traditional telephone services provided by China Telecom can no longer fulfill the various requirements from customers. The ARPU value of the fixed-line telephone services keeps decreasing and the broadband network services becomes SP's information transmission channel due to lacking provision of contents.

自从中国电信市场引入竞争机制以来，移动运营商发展迅速，固网运营商（包括中国电信和中国网通）面临严峻挑战，中国电信所经营的网络业务和传统的电话业务已无法应对日益增长并趋于多样化的用户需求，固网话音业务ARPU值的持续下滑已成为不争的事实，宽带网络也由于没有自己的业务而成为SP的信息传输管道。

The simulation shows that, by the mode of multi-path dividual transmission, the proposed protocol greatly improves the throughput of the whole network at the expense of little delivery performance, and increases the utilization ratio of network resources.

仿真表明，新协议在多径独立传输模式下，以少量的递交率性能为代价，大幅度提高了整个网络的吞吐量，增大了网络资源的利用率。

So, we combine CobraNet audio network technology, data transmitting technology, MCU technology and FPGA technology to develop interface and program of MCU, controlling PCB board, A/D converter PCB board, D/A converter PCB board, digital audio receive PCB board. At last, we construct a audio network and test it's performances.

本文紧密结合CobraNet 音频网络技术、数据传输技术、单片机技术和FPGA 技术，从事了单片机接口及控制程序设计、控制板设计、A/D 转换插卡设计、D/A 转换插卡设计、数字音频信号收发插卡设计，开发出了一系列音频网络设备，并组网测试。

Audio frequency and video frequency compression technology, real-time data transmission technology and network technology make it impossible to achieve multimedia communication on IP network.

音频和视频压缩技术、实时数据传输技术及网络技术的成熟，使得在IP网络上实现多媒体通信成为可能。

Chapter One analyzes the development of the digital video surveillance system and the background of the task. At last, main content are presented.

本系统在设计过程中，完成了视频的采集、显示、压缩、智能存储、网络传输、网络接收，还完成了局域网的组建，实现了IP组播。

With the rapid development of internet communication and multimedia technology, people tend to think thank that the traditional applications,for example: WWW services,FTP services,Email, Telnet services etc, become to be unfit for our demands in the real life.

随着计算机网络通信技术和多媒体技术的发展，人们不再满足于传统的网络应用，如WWW服务、文件传输、电子信箱、远程登录等；现在，集音频、视频和共享数据于一身的多媒体应用已成为新型应用的热点。

Successively from the multimedia technology for network transmission applications set higher demands that each terminal to terminal display in 8-10MPS to meet, broadcast DVD quality video through the network effect.

相继而来的多媒体技术应用对网络传输提出了更高的要求，即每一个终端达到8－10MPS才能满足在终端显示器上通过网络播放DVD水准的影像效果。

The technology of multicast in Stream Media has more advantages when it is applied for the application of direct living broadcast through IP network or IP television. It can make the media server send continuous data to more than one customer client synchronously without any delay or broadcast storm. Therefore it can improve the availability of the network system.

针对在IP网络上网上直播和IP电视等应用，流媒体传输技术中的多播技术具有更大的优势，它能让媒体服务器同时向多个客户端发送连续数据流而不产生延时，但又不会产生广播风暴，极大地提高了网络利用率。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。