Sunesys is one of the leading providers of telecommunications services in the United States. It offers a range of fiber optic products and services. The company serves the institutional and health care sectors. Sunesys also provides network management and Internet transport solutions. The company is a part of Quanta Services, which is one of the leading contracting services companies that offers infrastructure network solutions in the U.S. The parent company serves the electric power, natural gas, telecommunications and cable television industries.