PBX is a common Telephone Exchange system that is widely adopted by the group customers, for example, enterprise, schools and hotels etc.
用户交换机(PBX)是目前机关、企业、学校及酒店等集团客户普遍采用的电话设备。
solutions, such as switches, that replace PBXes;
替代用户交换机的解决方案，如交换器；
An IP Phone Scheme by Inter-Connecting Switching Equipment and Internet;
一种通过用户交换机接入Internet的IP电话
Specification for design of SPC PABX engineering in industrial enterprises
工业企业程控用户交换机工程设计规范
Statistics and management of straffic intensity on SPC PABX
程控用户交换机话务强度的统计与管理
Discussion of the Principle and Method to Certificate Hotel's Stored Progrom Control Exchange Offline
宾馆饭店用户交换机离线检定原理及方法探讨
telex telegraph exchange
用户电报直通交换机
automatic telex exchange
自动用户电报交换机
SPC telex exchange
程控用户电报交换机
A Contrastive Analysis of Central Exchange and Private Branch Exchange;
虚拟交换机与传统用户小交换机之对比分析
Making Use of ACL Functions of Exchanger to Control Student s User;
利用交换机ACL功能控制学生用户
computer telex exchange system
计算机用户电报交换系统
accountant computer user technical exchange
会计计算机用户技术交换
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
The Fault Diagnosing System Develepment for user SPC Switching System
用户程控交换机故障诊断系统的研制
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
If not, the call went to the company's in-house telephone switching system, or PBX (private branch exchange).
如果没有，电话就转到公司内的电话交换系统（即PBX，用户电话交换机）。
There are685,000 users of the internet over the city.
年末电话交换机总容量431.4万门，计算机互联网络用户68.5万户。
Intranet Telephony: Will your LAN Replace Your PBX?
内部网电话：局域网会替代用户电话交换机吗？