telephone exchange
noun
Forms telephone exchanges
- noun (telephony) Any equipment that establishes connections between telephones.
- noun (telephony, chiefly historical) The rooms or building housing such equipment (a central office, as it was termed by the Bell System).
- noun (telephony, historical) A local or locoregional network of such switched connections, of which a central office was the hub; the local company formed to create and maintain this network and its central office. “This valley didn't have a telephone exchange until 1903, when the leading citizens of this town invested in a company to establish one.”
- noun (telephony) The portion of a telephone number representing that network, among the other networks of the larger system: the central office code. In the North American Numbering Plan, this is the "555" portion of "+1-212-555-6789". “A: You can telephone him at 2719. B: What's the [telephone] exchange? A: LA6. I'm sorry, that's LA6-2719.”
Synonyms
Webster’s 1913
- A central office in which the wires of telephones may be connected to permit conversation.
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “telephone exchange”, CC BY-SA 4.0. Details