English

Definition of telephone exchange noun from the Oxford Advanced Learner's Dictionary

 

telephone exchange

 noun
noun
BrE BrE//ˈtelɪfəʊn ɪkstʃeɪndʒ//
 
; NAmE NAmE//ˈtelɪfoʊn ɪkstʃeɪndʒ//
 
(also exchange)
 
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a place where telephone calls are connected so that people can speak to each other
See the Oxford Advanced American Dictionary entry: telephone exchange