为适应战备和社会主义建设通信需要,我们应该积极努力建设以地下电缆大通路为骨干的全国通信网.但由于我国目前已基本建成全国明线通信网,在当前和电缆大通路未建成以前的过渡阶段,通信仍主要依靠明线.因此提高明线复用潜力,改善保密、改进传输质量等 In order to meet the communications needs of combat readiness and socialism construction, we should make every effort to build a national communications network that takes the underground mega-channel as the backbone. However, as China has basically completed the nationwide clear-line communications network, the current transition to the cable thoroughfare is not completed Phase, communication is still mainly rely on the open line.Therefore, to improve the potential of line reuse, improve confidentiality, improve the quality of transmission