4Cable TV International (formerly known as Liberto) is a specialty solutions provider for the cable television (CATV) sector spanning the range of repair, upgrading, and testing. It offers RF to fiber (RF2F), PowerMiser, RF over glass (RFoG), Node+0, SOLAR-CATV, and dynamically scalable return (DSR) products. The company provides service and customized solutions to CATV operators.