Some applications of PSTN as backup leased-line in security industry

Customization as an important means of market competition, there are an increasing number of large multinational corporations began to try to use safe and efficient IPLC FRAME-RELAY MPLS-VPN leased line business.

客户化成为市场竞争的重要手段，也有越来越多的大型跨国企业开始尝试使用安全性和效率更高的IPLC、FRAME-RELAY、MPLS-VPN等租用专线业务。

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This paper analyzed the reasons for the rapid development of MPLS VPN. The problems of MPLS VPN were studied. The application of MPLS VPN in leased line market was explored.

本文分析了MPLS VPN在专线市场发展较快的原因和发展中遇到的问题，并对MPLS VPN在专线市场的各个具体领域的应用发展做了详细分析。

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The communication network developing trend is from low speed network to high speed network with intelligence, from fixed network to flexible mobilized network, from leased line system to wireless system.

总体的趋势是由低速网络转变为高速智能化网络，由固定网络转变为更加灵活的移动化网络，由有线领域向无线领域演进。

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Intra-company network powered by VPN technology will avoid the construction of company-special network by special leased line, which will then reduce the cost.

使用VPN技术组建企业内部网络避免了使用远程专用线路构建企业专用网，从而节省了昂贵的成本。

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WAN connection types include leased line, circuit-switched, and packet-switched.

WAN连接类型包括专线、电路交换和分封交换。

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Leased Line is a permanent telephone connection between two points set up by a telecommunications common carrier.

专用线路是一个普通电讯运营商所设立的两个点之间的固定电话连接。

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The installation cost and monthly leased line rental will be borne by company directly.

业主直接支付安装费和每月租线费用。

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Leased Line Tariff Evolution of Main Telecommunication Carriers in Europe

欧洲主要电信运营商专线资费的演变

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These virtual circuits have a flat rate, similar to a leased line.

这些虚拟电路与租用专线相似，采用包价收费制。

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Creating High-quality IP Leased line

打造高品质的IP专线业务

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Design& Realization of Access Network System Management in SDH Private Communication Network; leased line

基于SDH专网的接入网网络管理系统设计与实现

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Real-time monitoring management system of the distribution transformer based on wireless private network leased line

基于无线专网的配变实时监测管理系统

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Application of Leased Line MODEM in Long-Range Communication System

专线MODEM在远程通信系统中的应用

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This system is according to B/ S model, and extensive adopted the ActiveX, DHTML with the appropriative data service technique.

文中的系统基于B/S模式，且广泛采用了ActiveX、DHTML和专用数据服务技术。

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But as a appropriative system, their price is very high, so it is not applied for LT-CNC.

但是作为专有系统，其价格昂贵，不能为蓝天数控系统所用。

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In the appropriative temperature range, the higher the temperature is, the better the root grows and the more its amount are.

在适宜的温度范围内，温度越高，气生根根毛生长越好，数量越多。

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Now, there are two kinds of computer monitoring and controlling software in the market: configuration software and appropriative computer monitoring and controlling software.

到目前，市场上的计算机监控软件主要有两种：组态软件和专用的计算机监控软件。

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Objective To investigate appropriative radical gastrectomy for gastric cancer through analysis of prognostic factors of 150 cases underwent gastric resection.

目的对150例胃癌手术治疗预后因素的分析，探讨合理的胃癌根治性切除术式。

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Road Test of 10W/ 40 SJ Citroen Appropriative Oil

10W/40SJ神龙专用油行车试验研究

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This text considers, the course of learning and creating knowledge is the course of appropriative investment of manpower capital actually.

本文认为，知识的学习和创造的过程实际上也是人力资本的专用性投资的过程。

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