阐述了矿井多媒体综合业务数字网络系统的设计原则，网络结构及主要功能。
The paper stated the design principle, network structure and main functions of the mine multi media ISDN digital network system.
阐述了矿井多媒体综合业务数字网络系统的设计原则，网络结构及主要功能。
The paper stated the design principle, network structure and main functions of the mine multi media ISDN digital network system.
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