Adding inserts from the Gira System 55, a wide range of functions can be realized with the Gira E2 design line: from socket outlets and Gira pushbutton sensors for KNX to the Gira System 3000 ...

A telephone central office switch that connects directly to the customer. Also called a "Class 5 switch" or "TDM switch," an end office switch is a computer specialized for TDM-based, circuit ...

A telephone central office switch that links telco end offices together and does not connect to the customer directly. Also called a "Class 4 switch" or "TDM switch," a tandem switch is a computer ...