Without the development of the mechanical telephone
automatic switching system, we would have to go through a 'live operator' to connect to the Internet if it even existed.
A new
automatic switching system, known as the crossbar, was therefore developed in which contact is established by moving springs equipped with small bits of precious metal, affording the advantage of reduced time in establishing connections and providing satisfactorily quiet telephone circuits with tower maintenance.
It offers
automatic switching systems for voltage (96 to 256 VAC) and for format (NTSC or PAL).