1.
Development of Phone Accounting System for PBX;
用户程控电话交换机通用计费程序的设计
2.
The calling subscriber's number display using the telephone sets with the display telephone numbers function not only traced the malicious call but also became a new service of SPC telephone exchanges.
说明了利用能显示主叫信息的话机来显示主叫信息，是程控电话交换机的一种新业务。
3.
electronically controlled telephone exchange
电子控制电话交换机
4.
Supervise telecom exchanger& desk phone installation.
监督程控交换机和桌上电话的安装.
5.
SPC digital toll exchange
程控数字长途电话交换机
6.
The Real-time Calculable System among Long-range Telephone on Computer and Exchange;
微机与程控交换机实现远程多门电话实时计费
7.
Technical requirements of digital SPC automatic telephone exchange
GB/T15542-1993数字程控自动电话交换机技术要求
8.
SPC telex exchange
程控用户电报交换机
9.
Generic specification for stored program control analogue private automatic branch telephone exchange system
GB/T14716-1993程控模拟用户自动电话交换机通用技术条件
10.
Generic specification for stored program control digital private automatic branch telephone exchange system
GB/T14381-1993程控数字用户自动电话交换机通用技术条件
11.
Code for design of railway SPC digital switching engineering
铁路时分数字程控电话交换工程设计规范
12.
computer telephone exchange
电脑自动电话交换机
13.
common battery exchange
共电制电话交换机局
14.
semielectronic telephone switching system
半电子制电话交换机
15.
machine driven switching system
机动制自动电话交换机
16.
Operating System of GC-01 Stored Program Control Telex Exchange
GC—01程控用户电报交换机操作系统
17.
Everywhere there are program-controlled telephone booths (2 thousand), information stations (700);
建成了2000门程控电话交换站，700多个信息点；
18.
automatic local exchange
市内电话自动交换机