A new integrated services digital PABX is introduced in this paper.

该PABX是一种适用于ISDN的 数字交换系统,采用当前国际上最新推出的VLSI芯片设计而成.

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Could you also let me know what detailed billing facilities exist for the PaBX?

请告诉我这种pabx是怎样记帐的,好 吗 ?

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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.

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