Item is a photograph of telephony voice and data transmission over telephone wires technology. This machinery is an optional auxiliary function line control box.
Item is a photograph of telephony voice and data transmission over telephone wires technology. This is a text-only terminal beside a telephone sitting on a modem for a data connection to a remote mainframe
Item is a photograph of telephony voice and data transmission over telephone wires technology. The telephone sits on a modem for a data connection to a remote mainframe
Item is a photograph of telephony voice and data transmission over telephone wires technology with discreet control buttons for absolute control over a data connection.
Item is a photograph of telephony voice and data transmission over telephone wires technology. This handset, produced by the ROLM corporation is connected to a central CBX (computer branch exchange) for establishing data connections.
