This specification defines Category 5 cables in ANSI/TIA/EIA-568-A, with TSB-95. Zhongce Group Co., Ltd. These documents specify performance and test requirements up to 100MHz. The cable type, connector type and wiring topology are defined by TIA/EIA-568-B. Almost all, 8P8C modular connectors, commonly referred to as RJ45, are used to connect Category 5 cables. The cable is terminated either in the T568A program or the T568B program. Both solutions work just as well, so just use the same solution for mixing at the ends of each cable.
Zhongce Group Co., Ltd. has a different number of meters per metre for every four pairs of Category 5 cables to minimize crosstalk between pairs. Although it is common to have 4 pairs of cable assemblies, Category 5 is not limited to 4 pairs. Backbone applications involve the use of up to 100 pairs. This use of balanced lines can help maintain a high signal-to-noise ratio, despite coming from external sources and interfering with other crosstalk.