专用电话网 meaning in English
private telephone network
Examples
- Application in the proper telephone network about no . 7 signalling system
中国七号信令系统在专用电话网的应用 - This telecom equipment includes : base stations , switches , public and private telephone network equipment , pbx systems , and dc dc power supplies that provide power to this equipment
这类电信设备包括：基站交换器公共和专用电话网设备pbx系统，以及为这些设备提供电源的dc或dc电源。