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.
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.
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;
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.
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.
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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