Telephone exchange

A telephone operator manually connecting calls with cord pairs at a telephone switchboard.

A modern central office, equipped for voice communication and broadband data.

Tivadar Puskás, inventor of the telephone exchange.

A telephone exchange is a telecommunications system used in the public switched telephone network or in large enterprises. An exchange consists of electronic components and in older systems also human operators that interconnect (switch) telephone subscriber lines or virtual circuits of digital systems to establish telephone calls between subscribers.

单词	Local telephone exchange
释义	Local telephone exchange 原声例句人物档案 The group's activities consisted of meeting twice a week carrying out guard duty at the local telephone exchange and other strategic points. 该小组的活动包括每周举行两次会议，在当地电话局和其他战略地点执行警卫任务。英语百科 Telephone exchange A telephone exchange is a telecommunications system used in the public switched telephone network or in large enterprises. An exchange consists of electronic components and in older systems also human operators that interconnect (switch) telephone subscriber lines or virtual circuits of digital systems to establish telephone calls between subscribers.
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Local telephone exchange

Telephone exchange