GB/T 16521-1996
AbolishedGeneral arrangements for interworking between packet switched public data networks (PSPDN) and circuit switched public data networks (CSPDN) for the provision of data transmission services
提供数据传输业务的分组交换公用数据网(PSPDN) 和电路交换公用数据网(CSPDN)之间互通的一般配置
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