The USOC/RJ-61 wiring standard may be used in multi-line telephone connections. In some cases, multiple signals can be carried on a single cable CatВ 5 can carry two conventional telephone lines as well as 100BASE-TX in a single cable. Through the use of power over Ethernet (PoE), power can be carried over the cable in addition to Ethernet data.Д¬atВ 5 is also used to carry other signals such as telephony and video. 1000BASE-T and faster Ethernet connections require four wire pairs. 10BASE-T and 100BASE-TX Ethernet connections require two wire pairs. The cable standard prescribes performance parameters for frequencies up to 100 MHz and is suitable for 10BASE-T, 100BASE-TX (Fast Ethernet), 1000BASE-T (Gigabit Ethernet), 2.5GBASE-T, and 5GBASE-T. The two schemes work equally well and may be mixed in an installation so long as the same scheme is used on both ends of each cable.Д¬ategory 5 cable is used in structured cabling for computer networks such as Ethernet over twisted pair. The cable is terminated in either the T568A scheme or the T568B scheme. Nearly always, 8P8C modular connectors (often referred to incorrectly as RJ45 connectors ) are used for connecting categoryВ 5 cable. Both variants are backwards compatible with CategoryВ 5 and 5e cables.Д¬able types, connector types and cabling topologies are defined by ANSI/TIA-568. CategoryВ 6A cable provides 500В MHz bandwidth. The improved performance of CatВ 6 provides 250В MHz bandwidth. The CategoryВ 6 specification improves upon the CategoryВ 5e specification by extending frequency response and further reducing crosstalk. The categoryВ 5 was deprecated in 2001 and superseded by the categoryВ 5e specification. The bandwidth (100В MHz) and physical construction are the same between the two, and most Cat 5 cables actually meet Cat 5e specifications, though they are not specifically certified as such. The categoryВ 5e specification improves upon the categoryВ 5 specification by revising and introducing new specifications to further mitigate the amount of crosstalk. This has exposed the manufacturers or installers of such fake cable to legal liabilities. The industry has seen a rise in non-compliant / counterfeit cables, especially of the Copper Clad Aluminum (CCA) variety.

The categoryВ 5 specification requires conductors to be pure copper. The category and type of cable can be identified by the printing on the jacket. Permanent wiring used in structured cabling is solid-core. The stranded form is more flexible and withstands more bending without breaking.

The cable is available in both stranded and solid conductor forms. These documents specify performance characteristics and test requirements for frequencies up to 100В MHz.

The specification for categoryВ 5 cable was defined in ANSI/ TIA/EIA-568-A, with clarification in TSB-95. The specification for categoryВ 5 cable is defined in ISO/IEC 11801, IEC 61156 and EN 50173.

2 pair cat 5 cable