| 1. | Methods of test for toll manual telephone switching equipment 长途人工电话交换设备.测试方法 |
| 2. | General technical requirements and test methods for manual toll telephone switching equipment 人工长途电话交换设备通用技术要求和测试方法 |
| 3. | Technical requirements and test methods for relays in manual toll telephone switching equipments 人工长途电话交换设备中继器技术要求和测试方法 |
| 4. | Technical requirements and test methods for monitor ' s desks in manual toll telephone switching equipments 人工长途电话交换设备班长台技术要求和测试方法 |
| 5. | Technical requirements and test methods for exchangers of operating services in manual toll telephone switching equipments 人工长途电话交换设备营业处交换机技术要求和测试方法 |
| 6. | Technical requirements and test methods for toll connecting boards and special boards in manual toll telephone switching equipments 人工长途电话交换设备长途接续台专线台技术要求和测试方法 |
| 7. | Technical requirements and test methods for ringing , power sources , alarm and distribuing frame in manual toll telephone switching equipments 人工长途电话交换设备铃流电源告警配线设备技术要求和测试方法 |
| 8. | Telephone switching equipment is alcatel s1240 system with 23 , 000 common telephones and isdn pra 20 as well as isdn pra 500 equipped with voice servers 交换设备为阿尔卡特alcatel s1240交换系统,共有一般门号23000门, isdnpra20路, isdnpra500路可提供语音服务。 |