A central office in which the wires of telephones may be connected to permit conversation
A telephone exchange is a building where connections are made between telephone lines. A central system of switches and other equipment that establishes connections between individual telephones. Also called switchboard. an office where telephone calls are connected
operator, switchboard operator, system for handling many telephone calls, central telephone network system
a workplace that serves as a telecommunications facility where lines from telephones can be connected together to permit communication