SMZ – Small multi-line telephone set

General description

end-user device for controlling up to 12 telephone circuits and a voice switchboard
used for the operative managing of railroad transport in railroad stations and on sidings
comfortable controls thanks to button localization
after pushing a button on the slanting panel, the telephone unit is connected to the relevant telephone circuit
possibility of using a SPNZ box with an integrated spare switch panel
ring generator 25 Hz (not 50 Hz)
choice from various SMZ versions

the SMZ device contains a switch panel box with connection cable, connection box, telephone device and electric adapter
the switch panel contains electric circuits and a 25 Hz ring generator
the connection box contains a terminal strip for telephone lines, announcement signals and power supply
by pressing a line button a connection to the selected circuit is made
by putting the microphone down, the connection is canceled
the connection and incoming call is indicated on the relevant line button
the dispatcher is informed via a light or acoustic indication