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当今世界电信技术发展的一个显著特点是,计算机技术与通信技术结合得更加紧密,各国将以随时随地能提供话音、数据与图像三者任意结合的通信手段为目标,重点开发。其发展趋势主要为以下几方面: 一、光通信将成为最有前途的传输系统 在过去10年中,光波通信系统的传输能力每年翻一番。目前2.4Gbit/s大容量光通信系统已开始装用,每
A notable feature of the development of telecommunication technology in the world today is that computer technology and communication technology are more closely integrated. All countries will focus on the development of communication means that can provide any combination of voice, data and image anytime, anywhere. The development trend mainly includes the following aspects: I. Optical communication will become the most promising transmission system In the past 10 years, the transmission capacity of optical communication systems has doubled every year. Currently 2.4Gbit / s high-capacity optical communications systems have begun to install, each