Communications Systems, Inc. operates through its subsidiaries which are principally engaged in the manufacture and sale of core media conversion products and connectivity infrastructure products for broadband and voice communications. It operates through the following segments: Transition Networks, JDL Technologies, and Net2Edge. The Transition Networks segment designs and markets media conversion products, ethernet switches, and other connectivity and data transmission products. The JDL Technologies segment is an IT managed services provider and value-added reseller. The Net2Edge segment develops, manufactures and sells products to connect legacy networks to high-speed services. The company was founded by Curtis A. Sampson in 1969 and is headquartered in Minnetonka, MN.