- a telecommunications facility to which subscribers' telephones connect, that switches calls among subscribers or to other exchanges for further routing.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for telephone exchange
Early next morning I went round to the telephone-exchange, rather than use the instrument in the hotel, and rang up Raymond.Spies of the Kaiser
William Le Queux