The author, based on over two years experience of using both central exchange and private branch exchange, makes a contrastive analysis of the advantages and the disadvantages of the two for other telecom end - users to refer to.
笔者根据对虚拟交换机与传统用户小交换机同时使用两年多的经验和体会，分析比较二者的利弊，供其他电信用户在制定有关方案时参考。
automatic telex exchange
自动用户电报交换机
telex telegraph exchange
用户电报直通交换机
SPC telex exchange
程控用户电报交换机
computer telex exchange system
计算机用户电报交换系统
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
private automatic telephone exchange
专用自动电话交换机
automatic switching of telegraph and telephone
电报-电话自动交换
Subscriber line signalling system for telephone automatic switching network
GB3378-1982电话自动交换网用户信号方式
A private telephone exchange that automatically connects internal "branch" lines to the external circuits of a telephone system.
一种自动地将内部用户线连接到电话系统外线的专用电话交换机。
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
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
machine driven switching system
机动制自动电话交换机
automatic computer telex system
计算机自动控制的用户电报系统
computer telephone exchange
电脑自动电话交换机
"Mobile phone exchanges, base stations and mobile phone subscribers, such as portable phones, handsets and so on."
主要有移动电话交换机，基站及移动台用户。
Tas (Teleprinter Automatic Switching)
印字电报机自动换接
auto transit telex facility
自动接转用户电报设备
step-by-step system local automatic telephone exchange
步进制市内用自动电话交换机