The common specifications Telephone Cable are two cores and four cores, with wire diameters of 0.4 and 0.5 respectively, and 0.8 and 1.0 in some areas. Except two core telephone cable, also have 8 Cores Telephone Cable and 4 Core Telephone Cable and Flat Telephone Cable.If the general family is the use of local telephone mode, 2 cores enough to use.If it is a company or part of the group telephone use, taking into account the needs of telephone broadband use, it is recommended to use a 4-core telephone cable is better, if the use of digital telephone, it is recommended to use a 6-core Telephone Line. In the end, our factory also supply Network Cable as well.