这是由于在分组交换数据网络中传输语音时发生了数据包丢失。
This is usually the result of packet loss when transmitting voice over a packet-switched data network.
互联网——“互联网”的术语，指可以协作分组交换数据的国际计算机网络。
Internet - the term 'Internet' means the international computer network of interoperable packet switched data networks.
本文介绍了公用和专用分组交换数据网的现状后，说明了开展标准的增值业务系统的重要性。
In this paper, after analysing the status on public and private PSDN, the significance of standard-based value added service systems is indicated.
目前，移动公司建成的基于2.5代移动通信gprs网络能够提供端到端的无线分组交换数据业务，提供低成本的数据无线传输业务。
Presently, Mobile Communication Company's GPRS network that based on the 2.5 G can supply packet radio service and low cost service of wireless transmission.
分组交换将信息(不管是文本、图像、音频还是视频)分割成大小适当的数据块，好比邮包中的一系列信件。
Packet switching slices messages (whether text, graphics, audio or video) into suitably sized blocks of data, like a series of letters in the mail.
如同在Wikipedia中所定义的，Internet是世界范围内、可公开访问的一系列互相连通的计算机网络，这些网络通过使用标准Internet协议(ip)的分组交换传输数据。
As defined in Wikipedia, the Internet is a worldwide, publicly accessible series of interconnected computer networks that transmit data by packet switching using the standard Internet Protocol (IP).
我们必需有发生，以紧凑的声音压缩成一个具有相当规模的数据，然后吃了分组交换传输网络。
Therefore, there needs to be a compression taking place to compact the voice data into a considerable size before it gets transmitted over a packet switching network.
这就意味着目前存在的面向连接的和电路交换的网络必须升级，以便能够支持分组交换的数据业务。
This means that many of the existing connection-oriented or circuit-switched networks will need to be upgraded to support packet-switched data traffic.
传输部分由中国移动提供的通信信道借助GPRS无线分组交换技术，实现数据透明转发。
Transmits partially the communications channel which provides by China mobile with the aid of the GPRS wireless grouping exchange technology, realizes the data transparently to retransmit.
分组交换也有缺点，需要花一些时间将数据“通话”拆分为多个分组，使用不同通道传输这些分组，然后在接收端将分组重新组装。
Packet switching does have the problem that it takes a little time to break up the data "conversations" into many packets, send them on their different ways and then reassemble them at the other end.
再利用铁路分组交换网完成机车运行数据到机务段的实时传输。
And through Railway Packet Switching Network the data can access the Railway Branch Locomotive Depots.
湖北省已开通运行的数据及多媒体通信网有：分组交换网、数字数据网、CHINANET及中国公众多媒体通信网等。
The data and multimedia communication networks in service in Hubei province includes PSPDN, DDN, CHINANET and the public multimedia network.
最后建议全国只建一个分组交换公用数据网。
Finally, we consider it more advisable to establish only one PSPDN in our country.
语音数据的封装策略是：由PSTN进入以太网和在以太网内部交换的分组语音数据，封装时以MAC物理地址作为寻址对象；
The voice data encapsulation policy is: for voice data entering Ethernet from PSTN and exchanging among Ethernet, MAC address is acted as addressing object when voice data is encapsulated;
第二章是光突发交换的网络性能分析。包括了各种资源预约机制、是否支持优先级服务和各种交换结构、调度算法对突发数据分组丢失率的影响。
Chapter two analyses the OBS network performance, including resource reservation, priority support and scheduling algorithm, with emphasis on their impact on the burst lost rate.
射频识别系统主要由读写器、应答器两部分组成，通过射频方式进行无线双向通信，完成目标识别和数据交换。
A simple RFID system consists of reader and transponder, by wireless two-way radio communication, target recognition and data exchange.
提出了一种以波长为标签的新型全光变长分组交换环网的体系结构、网络节点的光分组数据包收发模型，以及防止光分组冲突的多令牌协议。
With the specific features of better communication predictability of the timing token protocol, a formalized analysis model for the predictability has been developed.
本文简要介绍了路由器中IP数据包在以太网、X25分组交换网、串行链路上用相应的协议帧格式对IP数据包进行封装的标准和要求。
This paper introduces the standard and requirement for the transmission of IP datagrams over Ethernet, X. 25, Point-to-Point Links in a router.
本文简要介绍了路由器中IP数据包在以太网、X25分组交换网、串行链路上用相应的协议帧格式对IP数据包进行封装的标准和要求。
This paper introduces the standard and requirement for the transmission of IP datagrams over Ethernet, X. 25, Point-to-Point Links in a router.
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