长途网

随着超大容量DWDM系统在长途网中的大规模建设，用户接入及局域网的宽带化技术的普及，网络的瓶颈逐渐转移到了城域网。

With large-scale construction of ultra large capacity DWDM system in long distance network , popularization of user access and wide band technology in local area network , the network bottleneck has transferred to the Metropolitan Area Network gradually .

他们的发明之一是以无线上网为基础的长途网，或者叫远程网络无线保真技术。

One of their creations is a WiFi-based long distance network , or WiLDNet .

但随着光通信技术的进步，SDH技术①的成熟性和先进性，使其逐步由长途网到中继网，最后在接入网上得到广泛应用。

But the progress with mere communication , maturity and advance of SDH technology , make it used widely in the access network finally to the relaying network from the long-distance network progressively .

光纤通信在长途网应用的前进方向

Trends in Application of Optical Fiber Communication Systems in National Toll Network

随着通信技术的突破和光纤干线的铺设，骨干网（包括长途网和中继网）已基本实现了高速宽带化。

With the breakthrough of the communication technology and the implement of the optical fiber , the backbone has already realized high-speed and broadband .

描述了电话网络的路由组织，详细介绍了铁通长途网的路由组织方案。

The route organization in switching network is described , and a plan of route organization for CRC long distance telephone network is introduced .

为了满足用户不断提出的新业务要求，电信企业组建了不同的业务功能子网，包括长途网、本地网、智能网（IN）、数据通信网、声讯网等物理网络。

Along with the rapid development of new telecom services for customers ' requirements , the telecom company builds some physical networks , such as PSTN , IN , DDN , No.

城域网是连接传统长途网与接入网的桥梁，是传统电信网与新兴数据网络的交汇点及今后三网融合的基础。

Metropolitan area network is a bridge linking traditional long-distance network with access network , an intersecting point of the traditional telecom network and the new digital network , and the foundation of the merger of the three networks .

SDH和DWDM传输技术在江西网通省内长途传输网的工程应用

The Engineer Application of SDH and DWDM Transmission Technology in CNC Long-distance Transmission Network in JiangXi Province

结合XX长途传输网ASON商用实验项目的实际情况，研究了基于SDH的ASON应用。

In conjunction with actual conditions of commercial test project of X long-distance transmission network ASON , ASON application based on SDH is researched .

本规划通过3G网络对传送网的要求给出山东移动省内长途传输网的建设方案，并就本地网的建设提出了指导性意见。

Through the 3G network requirement for transportation net , this program gives the long-distance transportation net construction in Shandong province and the guidance suggestion to the local net construction .

传统PSTN网向分组化网络演进是历史的必然，而长途电话网的演进则是首当其冲。

It is inevitable to evolve from PSTN toward ATM / IP dominated packetized network , this evolution will first start with traditional toll network .

SDH环形网络因其具有自愈能力的优点，常常用于电力系统中继网和重要的长途骨干网的建设，因而如何更好地解决环网的安全性问题则至关重要。

SDH ring network is always used in electric power system to construct the relay network and important long-haul network because of its advantage of self-healing , it is necessary to solve the safety problem .

同步数字体系（SDH）和同步光纤网络（SONET）在世界范围广泛应用于城域主干网，长途通信网和广域网。

Synchronous Digital Hierarchy ( SDH ) and Synchronous Optical Network ( SONET ) are now applied worldwide both in carrier backbone networks , by metropolitan service providers and in large scale WANs by end-user organizations .

利用非等温等离子体化学气相沉积（PCVD）工艺制备了一种适合于大容量高速率长途干线网与城域网的中芯下陷型纤芯结构非零色散位移光纤。

A non zero dispersion shifted fiber with core depressed profile for large capacity and high bit rate backbone network and metropolitan area network is designed and fabricated by plasma chemical vapor deposition ( PCVD ) process .

并结合我国目前长途传输网的现状，论述了在我国长途干线网中配置DXC设备的必要性及其配置方案。

Combined with current situation of long ─ distance transmission network in China , it describes the necessity of configuring long ─ distance trunk network with DXC equipment and the configuration plan .

长途传输网综合网管系统建设探讨

Discussion on Integrated Network Management System of Long-distance Transmission Network

长途通信网汇接方案它汇集市场需求的信息。

Trunk switching scheme It collects information about market needs .

关于长途传输网网管系统的改进和发展的几点建议

Some Issues About the Development of the Toll Transmission Network Management System

铁通长途传输网保护方式的探讨

Exploration of Protection Mode of CRC Long Distance Transmission Network

传统长途电话网向分组化网络的演进之路&BICC

An Evolution Road from Traditional Toll Network to Packetized Network ── BICC

中国网通长途智能网扩建工程

Expansion of CNC ' Long - distance Intelligent Network

中国联通长途通信网的建设与发展

Construction and Development of China Unicom Long Distance Network

我国长途传输网的光纤选型

The Selection of Fiber in National Backbone Transmission Network

铁通长途电话网的路由组织

Route Organization for CRC Long Distance Telephone Network

湖北省长途电话网发展策略

Toll Telephone Network Development Strategy in Hubei Province

长途传输网的演进方向探讨

Discussion on Evolution of Long-distance Transmission Network

长途传送网网络优化浅析

Analysis of Trunk Transmission Network Optimization

我国长途电信网的接通率只有45%左右，链路的利用率又仅为30%&40%。

In Chinese mainland , network switch and link usage rates is about 45 % and 30 % & 40 % respectively .

擅长临场发挥的演员.交通专用卫星长途通信网建成并实现了全国联网，在推进交通信息化方面发挥了作用。

The satellite telecommunication network specialized in transport has been set up and networked nationwide , greatly promoting the informationization of the transport sector .