Catalyst Communications Technologies, Inc. is structured around aspects of Radio Control over IP technology for the critical communications industry with the effort being to bring Internet-derived technologies into mobile radio communications for First Responders. Focused on products to leverage standard Windows-based computers with intent to reduce cost and increase the efficiency of network operators and end users, Catalyst products provide Primary Dispatch and Desktop Dispatch solutions, as well as intelligent, network-based interoperability that connects different radio systems, cellular PTT, and telephones using the IP network. The firm's Department of Homeland Security award to research and build an Interworking solution to enable communications between legacy Land Mobile Radio networks and new LTE based networks that employ Mission Critical Push to Talk, including FirstNet(tm), Push to Talk Responder, and other LTE services form carriers serving the First Responder community.