2) trunk fiber network
干线光缆传输网
1.
This paper discusses the impact of trunk fiber network on the system of information network cities in China.
从2000年末全国干线光缆传输网结构和容量入手,对其建设状况进行了初步的地理分析,着重考察了基于这种信息网络基础设施之上的中国城市体系格局。
4) optical cable transmission
光缆传输
1.
Design of optical cable transmission network based on 64D blocking circuit;
基于64D闭塞电路的光缆传输网络的设计
5) optical transmission network
光传输网
1.
Justifies the necessity to perfect the electric power system SDH optical transmission network, discusses the feasibility of perfecting the SDH optical transmission network with SDH microwave, the way of perfection and the problems to be solved.
阐述了完善电力系统SDH光传输网的必要性 ,论证了利用SDH微波完善SDH光传输网的可行性 ,讨论了实施方法及需要解决的问题。
2.
The optical transmission network is the foundation of the telecommunication network.
光传输网是电信网的基础,由于光缆线路系统的特殊性,决定了光传输网规划中光缆芯数及光纤类型的确定尤其重要。
3.
Based on optical transmission equipment made by Huawei company,this paper analyses the access of protection services to optical transmission network,and discusses the realization of optical fiber current differential protection in power communication network.
鉴于采用光纤电流差动复用2 M保护的E1通道不能做成自愈环,文章分析了保护业务接入光传输网的方式,并以华为光传输设备为例,介绍光纤电流差动保护在电力光纤通信网中的实现方案。
6) optical transport network
光传输网
1.
Generic framing procedure(GFP) is a new brand of data-packet transmitting protocol on synchronous digital hierarchy(SDH), as well as on optical transport network(OTN).
通用成帧协议(GFP)不仅是光同步数字传输网上的传输协议,而且是光传输网上的新型数据包传输协议,它具有简单、多协议适配等优点。
补充资料：城域网(见计算机网络)
城域网(见计算机网络)
metropolitan area network, MAN
ehengyuwQng城域网(metropolitan area netwo次，MAN)分布范围可覆盖几个街区到整个城市的计算机网络。见计算机网络。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条