Profile: Dynalec Corp. specializes in offering announcing systems, communication terminals, conferencing systems, handset & headsets, IC switchboards, alarm panels, intercom systems, loudspeakers, navigation systems and wire free products. The interior voice communication system is an automatic, electronic telephone system which provides the primary means for individual or group communications aboard ship. It combines the functions and features normally provided by several independent systems such as dial and sound powered telephones & remote control radio. The IC/D call-signal station is sound powered intercommunication equipment designed for shipboard installation. It enables two-way net communication with up to sixteen other IC/D stations. This unit contains a hand operated magneto generator which when operated activates a howler or call-signal light at the selected station.