B - ISDN网络所提供的最重要的宽带服务是高速数据通信服务及视频通信服务。
The most important of the broadband services to be provided through the B-ISDN are high-speed data communication services and video communication services.
B - ISDN网络所提供的最重要的宽带服务是高速数据通信服务及视频通信服务。
The most important of the broadband services to be provided through the B-ISDN are high-speed data communication services and video communication services.
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