Power supply of the telephone exchange

The method of power the control
The individual elements of the telephone exchange tend to be powered in different ways, here are ways to power the control:
– The electric power supply provides electricity to power all the elements of the panel,
– Power supply via the actuator is a way to provide a constant current to power the phone,
– Power signal its main task is to produce signals that are audible to the subscriber, the power supply also generates signals for signaling between tabs,
– Pulsed power – thanks to it is powered digital switchboard.