SDH is a kind of comprehensive information network Technique which managed by uniform TMN together with multiplex, line transmission and cross collection.
SDH是一种将复接、线路传输及交叉连接功能结合在一起并由统一网管系统进行管理操作的综合信息网络技术。
We will provide comprehensive information services at the Olympic Games by making full use of digital network technology, distant audio-visual transmission technology and video technology.
充分利用数字网络技术、远程音像传输技术以及图像显示技术，为奥运会提供综合信息服务；
We will provide comprehensive information services at the Olympic Games by making full use of digital network technology, distant audio-visual transmission technology and video technology.
充分利用数字网络技术、远程音像传输技术以及图像显示技术，为奥运会提供综合信息服务；
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