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我们工作和生活都离不开网络,您的电话通过ISDN链接到因特网供应商,你的计算机通过LAN连接到其它部门,再通过这些网络连接到高速的WAN光纤网上、获得更高的传输速度和更强的能力。安装和维护网络需要很大的投资。如果LAN网每两年或三年要升级,光缆是一种既经济又实用的通信办法。网络的主要成本实际上多用在敷设电线上。当然,如果只租用2～3年就搬迁,那么用铜双绞线是更好的解决办法。如果你对网络性能负责的话,就应当保证网络按预期要求工作。
Our work and life are inseparable from the network, your phone is connected to the Internet provider via ISDN, your computer is connected to other departments via LAN, and then through these networks to connect to the high-speed WAN fiber network for higher transmission speed and More capable. Installation and maintenance of the network requires a lot of investment. If the LAN is to be upgraded every two or three years, fiber optic cable is an economical and practical means of communication. The main cost of the network is actually used for laying wires. Of course, if you rent only 2 to 3 years to relocate, then the use of copper twisted pair is a better solution. If you are responsible for the performance of the network, you should ensure that the network works as expected.