高速电路交换数据 High-Speed Circuit-Switched Data ; HSCSD

高速率电路交换数据 HSCSD

分组交换数据网 [计] packet switched data network ; PSDN-Packet Switched Data Network ; CHINPAC

电路交换数据 CSD ; Circuit-Switched Data ; circuit switching Data

高速电路交换数据服务 HSCSD ; high-speed circuit-switched data service ; High-Speed Circuit-Switched Data

电路交换数据网 CSDN ; circuit switched data network ; circuit exchange data network

公用分组交换数据网 CHINAPAC ; PSPDN ; CNPAC

分组交换数据 packet switched data ; packetswitcheddatatra ; packet

交换数据集 [计] swap data set