1) program-controlled digital users exchanger
程控数字用户交换机
1.
The paper analyzes the major reasons of overvoltage and overcurrent occuring to program-controlled digital users exchanger, and discusses the protection methods against overvoltage and overcurrent.
本文分析了程控数字用户交换机过压过流产生的主要原因,并讨论了过压过流的保护方法。
2) Private Automatic Branch Exchange(PABX)
程控用户交换机
1.
In the maintenance of Private Automatic Branch Exchange(PABX),the problem of power supply quality is often neglected.
在程控用户交换机维护中,电源质量的问题较容易被忽视。
3) digital telephone switching
数字程控交换机
1.
New generation speech CODEC for digital telephone switching;
新一代数字程控交换机话音编解码电路
5) PBX user board
程控交换机用户板
1.
The PBX user board trial instrument presented is designed mainly aiming at the ZXJ2000 PBX user board.
程控交换机用户板测试仪主要是针对中兴通讯ZXJ2000型程控交换机用户板而设计的。
补充资料:数字程控交换
用预编程序控制交换接续的市内和长途电话交换机。利用了计算机技术,接续快,体积、功耗、噪音小,维护方便,且灵活性强,只要变换或增加相应程序,就可实现交换性能的变更,如呼叫转移、自动回叫、三方会议等。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条