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B-ISDNBroadbandIntegratedServiceDigitalNetwork宽带综合业务数字网是ISDN发展的高级阶段,可以支持各种不同类型、不同速率的业务。用户线路上的传输速率在2Mbit/s以上。BISBusinessInformationSystem商务信息系统BOSBasicOperatingSystem基本操作系统BOSSBusinessOperation
B-ISDNBroadbandIntegratedServiceDigitalNetwork Broadband Integrated Services Digital Network is an advanced stage of ISDN development that supports different types and rates of services. The transmission rate on the user line is above 2Mbit / s. BISBusinessInformationSystem Business Information System BOSBasicOperatingSystem Basic operating system BOSSBusinessOperation