Hollywood has wiring and cabling companies that supply the same to the telecom sector. The voice, data, video, wireless/mobile, unified communications, contact center, and networking technologies needed for telecommunications needs physical infrastructure such as towers, underground cables, wires and others. These are set up by tower and cable companies. These cables and wires have to be of standard legnths and thicknesses. Troubleshooting for wiring and cabling issues can also be done by call centers. Installation and maintenance for communication systems and their wiring, either for residences or for commercial establishments, is also available in Hollywood.