| 1. | Analogue pstn terminal support interface 模拟公共开关电话网络终端支持接口 |
| 2. | Essential requirements for terminal equipment intended for connection to digital interfaces of the pstn using channel associated signalling 使用相关信号通道将终端设备联接于公共开关电话网络数字接口的基本要求 |
| 3. | Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators - specification for general requirements 连接由某些公共长途电话接线员操作的公共开关电话网络的专用分组交换机.一般要求规范 |
| 4. | Essential requirements for a handset telephony facility provided by terminal equipment intended for direct connection to an analogue interface of the public switched telephone network 使用公共开关电话网络模拟接口直接连接终端设备为手机通话提供条件的基本要求 |
| 5. | Apparatus with one or more particular functions for connection to public switched telephone networks run by certain public telecommunications operators - specification for general requirements 连接由某些公共长途电话接线员操作的公共开关电话网络用单功能或多种特别功能设备.第1部分:一般要求规范 |
| 6. | Apparatus with one or more particular functions for connection to certain public switched telephone networks - specification for series connected apparatus - apparatus having maximum allowable impairments 连接某些公共开关电话网络的单功能或多种特别功能设备.串联设备规范.具有最大允许故障率的设备 |
| 7. | Apparatus with one or more particular functions for connection to public switched telephone networks run by certain public telecommunications operators - specification for apparatus with loudspeaking facilities 连接由某些公共长途电话接线员操作的公共开关电话网络用单功能或多种特别功能设备.带扬声器的设备规范 |
| 8. | Apparatus with one or more particular functions for connection to certain public switched telephone networks - specification for series connected apparatus - apparatus having less than maximum allowable impairments 接连某些公共开关电话网络的单功能或多种特别功能设备.串联设备规范.具有小于最大允许故障率的设备 |
| 9. | Apparatus with one or more particular functions for connection to public switched telephone networks run by certain public telecommunications operators - specification for apparatus with call barring facilities 连接由某些公共长途电话接线员操作的公共开关电话网络用单功能或多种特别功能设备.第7部分:带呼叫禁止装置的设备规范 |
| 10. | 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 连接由某些公共长途电话接线员操作的公共开关电话网络用专用分组交换机.整体终端站的专用分组交换机规范 |