1.
SPC digital toll exchange
程控数字长途电话交换机
2.
automatic toll switching system
长途电话自动交换机
3.
The total length of long-distance optical cable installed increased by 27,000 sheath km, that of digital microwave links by 14,400 km, and the number of telephone lines by 19.61 million.
新增长途光缆27000皮长公里，数字微波干线14400公里，电话交换机容量1961万门。
4.
computer telephone exchange
电脑自动电话交换机
5.
common battery exchange
共电制电话交换机局
6.
electronically controlled telephone exchange
电子控制电话交换机
7.
semielectronic telephone switching system
半电子制电话交换机
8.
machine driven switching system
机动制自动电话交换机
9.
The transmission performance objectives for public analogue toll telephone automatic switching network
GB/T7437-1987公用模拟长途电话自动交换网传输性能指标
10.
automatic local exchange
市内电话自动交换机
11.
ESSEX (Experimental Solid State Exchange)
实验固体电话交换机
12.
crossbar automatic telephone system
纵横制自动电话交换机
13.
unit automatic exchange
内部自动电话交换机
14.
private automatic telephone exchange
专用自动电话交换机
15.
time multiplex telephone exchange
时分多路电话交换机
16.
railway telephone exchange
铁路专用电话交换机
17.
code switch automatic telephone system
码条式自动电话交换机
18.
floor pattern magneto telephone switchboard
磁石落地式电话交换机