呼叫号 meaning in English

ringing number

Draft standard to match to and work with ets 300 001 net4 . apparatus with one or more particular functions for connection to public switched telephone networks run by certain public telecommunications operators . apparatus with auto - calling , auto - answering and auto - clearing facilities . specification for auto - answering and auto - clearing facilities
与ets 300001 net4相适应的标准草案"由某些公共长途通信接线员操作的公共交换电话网连接用单功能或多种特别功能装置" .第3部分:有自动呼叫号自动回答和自动消号设备的装置.第3 . 2节:自动回答和自动消号设备规范
Draft standard to match to and work with ets 300 001 net4 . apparatus with one or more particular functions for connection to public switched telephone networks run by certain public telecommunications operators . apparatus with auto - calling , auto - answering and auto - clearing facilities . specification for auto - calling facilities
与ets 300001 net4相适应的标准草案"由某些公共长途通信接线员操作的公共交换电话网连接用单功能或多种特别功能装置" .第3部分:有自动呼叫号自动回答和自动消号设备的装置.第3 . 1节:自动呼叫设备规范