Overview
The Quadruplex telegraph is a type of electrical telegraph which allows a total of four separate signals to be transmitted and received on a single wire at the same time. Quadruplex telegraphy thus implements a form of multiplexing.
The Quadruplex telegraph is a type of electrical telegraph which allows a total of four separate signals to be transmitted and received on a single wire at the same time. Quadruplex telegraphy thus implements a form of multiplexing.