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伴随着电信传输技术的不断发展,由原邮电部第五研究所创办的在我国通信传输领域享有盛誉的《现代有线传输》技术刊物出版100期了。原邮电部第五研究所和《现代有线传输》经历了30多年来电信传输技术的飞速发展历程,见证了传输技术的历次重大变革。从二十世纪七十年代PDH技术的出现到八十年代光纤传输技术的成熟,开始了从模拟载波通信向数字通信的演进,从八十年代末SDH技术的提出到九十年
With the continuous development of telecom transmission technology, the “Modern Cable Transmission” technical publication, which is prestigious in the field of communications transmission in China, was founded by the Fifth Research Institute of the Ministry of Posts and Telecommunications published 100 issues. The Fifth Institute of the former Ministry of Posts and Telecommunications and “Modern Cable Transmission” experienced more than 30 years of telecom transmission technology, the rapid development process, witnessed the transmission technology of the previous major changes. From the emergence of PDH technology in the 1970s to the maturity of optical fiber transmission technology in the 1980s, the evolution from analog carrier communications to digital communications began with the introduction of SDH technology in the late 1980s to 1990s