海洋信息通信网地面专网运行规范 设备巡检海洋信息通信网地面专网运行规范 设备巡检Specification for the operation of private ground network of marine information communication network—Equipment inspection
海洋信息通信网地面专网建设技术规范
Technical specification for the private ground network construction of marine information communication network
2024-03-05
BS 6450-2-1993
Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators-Specification for private branch exchanges with terminating stations treated as an entirety
专用分支交换机 用于连接某些公共电信运营商运营的公共交换电话网络 终端站作为一个整体处理的专用分支交换机规范
1993-02-15
BS 6320-1992
Specification for modems for connection to public switched telephone networks and speech band private circuits run by certain public telecommunications operators
连接到公共交换电话网络和某些公共电信运营商运行的语音带专用电路的调制解调器规范
1992-10-31
BS 6450-1-1993
Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators-Specification for general requirements
专用分支交换机 用于连接某些公共电信运营商运营的公共交换电话网络 一般要求规范
1993-02-15
BS 6450-3.1-1993
Private branch exchanges for connection to public switched telephone networks run by certain public telecommunication operators. Direct dialling in on private branch exchanges-Specification for direct dialling in on private branch exchanges with terminating stations treated as an entirety
专用分支交换机 用于连接某些公共电信运营商运营的公共交换电话网络 在私人分支交换机上直接拨号 终端站作为一个整体处理的专用分支交换机直接拨号规范
1993-01-15
BS 6450-7-1990
Private branch exchanges for connection to public switched telephone networks run by certain public telecommunication operators-Specification for the procedure for in-service observation of PBXs undergoing type approval
专用分支交换机 用于连接某些公共电信运营商运营的公共交换电话网络 正在进行型式认证的PBX在役观察程序规范
1990-10-28
BS 6450-6.1-1993
Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators. Simple call-routeing mode (SCRM)-Specification for the simple call-routeing mode of PBX operation, with terminating stations treated as an entirety
专用分支交换机 用于连接某些公共电信运营商运营的公共交换电话网络 简单呼叫路由模式（SCRM） PBX操作的简单呼叫路由模式规范 终端站作为一个整体处理