private branch exchange

短语

[计] 专用交换分机

发音

AU

词形变化

private branch exchanges 复数 private branch exchanges abbreviation PBX 复数

别名

PBX

释义与例句

n.
  1. 1.

    A telecommunications switching system, physically located at a customer's place of business, that provides internal communication between users and also access to outside (trunk) telephone lines.

    媒体 工程