Telcordia Technologies has proposed generic requirements for telecommunication equipment cabinets. China Energine engages in wind power and telecommunication equipment manufacturing business. These are provided by one of the world telecommunication equipment manufacturer, Huawei. In 1916, he became managing director of Elektrisk Bureau, a manufacturer of telecommunication equipment. ZTE is a Chinese telecommunication equipment company. Since the 1970s, the company designed, produced, installed and maintained microwave telecommunication equipment also. Elektrisk Bureau or EB was a Norwegian manufacturer of telecommunication equipment. Kokkalis founded Intracom in 1977 as a telecommunication equipment supplier and manufacturer. Telecommunication equipment was supplied by Nokia. Ingate Systems AB is a Swedish company that sells data network security and telecommunication equipment. The measurement is typically based on the reporting by telecommunication equipment via call detail records. Thus, all power supplies for telecommunication equipment are designated to supply a negative voltage. Also, routers, enterprise network switches and other telecommunication equipment have RS-232 serial console ports. Telecommunication equipment may become damaged due to direct ash fall. This license applies to telecommunication equipment that is connected to the public telecommunication network.