Telecommunications is the communication of information over distances and includes electronic transmission of impulses by telephone, computer and television. The beginning of telecommunications started with the invention of the telephone in 1874. Today, it has evolved from basic voice conversation to combining voice, video and data. Since communications in only one direction is ineffective, telecommunication systems can handle two-way communications. There are essentially four types of telecom copper cables, all of which are manufactured by General Cable. The first three types qualify as outside plant cables and include: aerial cables, which are used above ground; duct/buried cables, which are used below ground; and wire products used as the last link in bringing telecommunication services to the subscriber. In addition, central office cables round out the group and serve to distribute or cross-connect signals within buildings. Our Telecommunications cable constructions contain no halogens, which mean they are less toxic and more environmentally friendly. General Cable proudly manufactures our Telco cables here in the U.S.A. Air Core Cable Enabling the distribution of telco signals for outside use, either underground or aerially. Filled Core Cable For underground or aerial installation where protection against water and moisture entry is required. Wire Products Small distribution wires used as the last link in bringing telco services to the subscriber. Central Office Products Cables with the ability to run both analog and digital services and interconnect equipment. Telecommunications Technical Information Find Cross-Reference Tables, FAQs and Sag and Tension Tables.