The telecommunications industry dials up Dycom Industries for construction and engineering assistance. Operating through more than 30 subsidiaries, the company primarily designs, builds, and maintains coaxial, copper, and fiber-optic cable systems for local and long-distance phone companies and cable television operators. Dycom also provides wiring services for businesses and government agencies, installs and maintains electrical lines for electric and gas utilities, and locates underground wires and pipelines for excavators. Dycom operates in the US and Canada.