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通信电缆是现代社会的生命线,它把话音、数据和图象传送到地球的各个角落。Alcatel NV公司是世界上最主要的供货商;它的大部分产品是来自其子公司Les Cables de Lyon,后者是15个国家约35家公司组成的集团公司,他们一起可提供50000多种电缆和附属产品。这里仅介绍在Teleeom 37上展示的该集团的重要产品中有代表性的样品。长途通信用的电缆:现今大多数长途(城市间)通信网相传输任务繁重的短途(交换局内)通信网均装备有同轴电缆,但因为光缆的传输容量大、重量轻、中继间距大以及不受电磁干扰的影响、经济效益正在增长,故有加速采用光缆的趋势。 1.同轴电缆:同轴电缆既用于模拟传输系统又用于数字传输系统,它有二线制和四线制二种结构。二线制系统采用一
Communication cables are the lifeblood of modern society, sending voice, data and images to every corner of the globe. Alcatel NV is the world’s leading supplier; most of its products come from its subsidiary, Les Cables de Lyon, a group of about 35 companies in 15 countries that together offer more than 50,000 Cables and accessories. Here are just a few of the most important samples of this group’s products that were shown on Teleeom 37. Cables for long-distance communications: Most short-distance (inter-city) communication networks today carry heavy-handed communications networks that are equipped with coaxial cables, but because of their large transmission capacity, light weight, and large inter-relay distances As well as being free from the effects of electromagnetic interference, the economic benefits are growing and there is a tendency to speed up the use of optical cables. 1. Coaxial cable: Coaxial cable is used for both analog transmission system and digital transmission system. It has two-wire and four-wire structure. Two-wire system uses one