Digital Switching Network  数字交换网络

Digital Telephone Network  数字电话网络; 数字电话网

Digital Telephone Network DTN  数字电话网络

digital telephone switching  数字程控交换机; 数字电话交换业务

digital telephone switching service  数字电话交换业务

packet switching telephone network  分封交换电话网络

public switching telephone network  公用交换电话网

Telephone Switching Network  电话交换网

telephone switching network of railway  铁路电话交换网

Advanced Digital Network  进阶数字网络

analog digital network  模拟-数字网络

automatic digital network  自动数字网络; 自动化数字网络; 自动数字网; 充气约束系统

automatic digital switching  自动数字交换

B-ISDN Broadband – Integrated Services Digital Network  宽带综合服务数字网

B-ISDN Broadband integrated service digital network  宽带ISDN

Broadband Integrated Service Digital Network  综合业务数字网; 宽带综合业务数字网; 宽带整体服务数字网络

Broadband Integrated Services Digital Network  宽带整体服务数字网络

Broadband Integrated Services Digital Network(B-ISDN)  宽带整体服务数字网络

broadband-integrate service digital network  宽带综合业务数字网