NationMaster - Encyclopedia: Category 5 cable

Category 5 cable, commonly known as Cat 5, is a twisted pair cable type designed for high signal integrity. Many such cables are unshielded but some are shielded. Category 5 has been superseded by the Category 5e specification. This type of cable is often used in structured cabling for computer networks such as Ethernet, and is also used to carry many other signals such as basic voice services, token ring, and ATM (at up to 155 Mbit/s, over short distances). File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... A patch cable or patch cord (sometimes patchcord or patchcable) is an electrical cable, used to connect (patch-in) one electronic device to another for signal routing. ... 25 Pair Color Code Chart 10BASE-T UTP Cable Twisted pair cabling is a common form of wiring in which two conductors are wound around each other for the purposes of cancelling out electromagnetic interference known as crosstalk. ... Electromagnetic shielding is the process of limiting the coupling of an electromagnetic field between two locations. ... Data Center Structured Cabling is defined as building or campus telecommunications cabling infrastructure that consists of a number of standardized smaller elements (hence structured) called subsystems. ... For the scientific and engineering discipline studying computer networks, see Computer networking. ... Ethernet is a large, diverse family of frame-based computer networking technologies that operate at many speeds for local area networks (LANs). ... In telecommunication, Telephony encompasses the general use of equipment to provide voice communication over distances. ... IBM token ring refers to IBMs implementation of token ring technology for linking personal computers in a local area network (LAN). ... The introduction to this article provides insufficient context for those unfamiliar with the subject matter. ... The Megabit is a unit of information storage, abbreviated Mbit or sometimes Mb. ...

Usage and wiring methods

Image File history File links Rj45plug-8p8c. ... Image File history File links Rj45plug-8p8c. ... TIA/EIA-568-B is a set of three telecommunications standards from the Telecommunications Industry Association, a 1988 offshoot of the EIA. The standards address commercial building cabling for telecom products and services. ... Image File history File links Wire_white_green_stripe. ... Image File history File links Wire_green. ... Image File history File links Wire_white_orange_stripe. ... Image File history File links Wire_blue. ... Image File history File links Wire_white_blue_stripe. ... Image File history File links Wire_orange. ... Image File history File links Wire_white_brown_stripe. ... Image File history File links Wire_brown. ... TIA/EIA-568-B is a set of three telecommunications standards from the Telecommunications Industry Association, a 1988 offshoot of the EIA. The standards address commercial building cabling for telecom products and services. ... Image File history File links Wire_white_orange_stripe. ... Image File history File links Wire_orange. ... Image File history File links Wire_white_green_stripe. ... Image File history File links Wire_blue. ... Image File history File links Wire_white_blue_stripe. ... Image File history File links Wire_green. ... Image File history File links Wire_white_brown_stripe. ... Image File history File links Wire_brown. ... Image File history File linksMetadata Size of this preview: 800 Ã— 600 pixel Image in higher resolution (1024 Ã— 768 pixel, file size: 211 KB, MIME type: image/jpeg)By Richard Wheeler (Zephyris) 2007. ... Image File history File linksMetadata Size of this preview: 800 Ã— 600 pixel Image in higher resolution (1024 Ã— 768 pixel, file size: 211 KB, MIME type: image/jpeg)By Richard Wheeler (Zephyris) 2007. ... Image File history File links Metadata No higher resolution available. ... Image File history File links Metadata No higher resolution available. ... Cat5 cables with RJ45 connectors wired to T568B TIA/EIA-568-B is a set of three standards that address commercial building cabling for telecommunications products and services. ... Cat5 cables with RJ45 connectors wired to T568B TIA/EIA-568-B is a set of three standards that address commercial building cabling for telecommunications products and services. ...

Category 5

The original specification for category 5 cable was defined in ANSI/TIA/EIA-568-A, with clarification in TSB-95. These documents specified performance characteristics and test requirements for frequencies of up to 100 MHz. The American National Standards Institute or ANSI (pronounced an-see) is a nonprofit organization that oversees the development of standards for products, services, processes and systems in the United States. ... Cat5 cables with RJ45 connectors wired to T568B TIA/EIA-568-B is a set of three standards that address commercial building cabling for telecommunications products and services (the three standards are formally titled ANSI/TIA/EIA-568-B.1-2001, -B.2-2001, and -B.3-2001). ... Sine waves of various frequencies; the lower waves have higher frequencies than those above. ...

Category 5 cable includes four twisted pairs in a single cable jacket. This use of balanced lines helps preserve a high signal-to-noise ratio despite interference from both external sources and other pairs (this latter form of interference is called crosstalk). It is most commonly used for 100 Mbit/s networks, such as 100BASE-TX Ethernet, although IEEE 802.3ab defines standards for 1000BASE-T - Gigabit Ethernet over category 5 cable. Cat 5 cable typically has three twists per inch of each twisted pair of 24 gauge copper wires within the cable. May be unsuitable for 1000BASE-T gigabit ethernet. 25 Pair Color Code Chart 10BASE-T UTP Cable Twisted pair cabling is a common form of wiring in which two conductors are wound around each other for the purposes of cancelling out electromagnetic interference known as crosstalk. ... In telecommunications, a balanced line or balanced signal pair is a transmission line consisting of two conductors in the presence of ground, which relies on balanced impedances to minimize interference. ... In telecommunication, the term crosstalk (XT) has the following meanings: 1. ... Ethernet is a large, diverse family of frame-based computer networking technologies that operate at many speeds for local area networks (LANs). ... Gigabit Ethernet (GbE or 1 GigE) is a term describing various technologies for transmitting Ethernet frames at a rate of a gigabit per second, as defined by the IEEE 802. ... American wire gauge (AWG), also known as the Brown and Sharpe wire gauge, is used in the United States and other countries as a standard method of denoting wire diameter, especially for nonferrous, electrically conducting wire. ...

Category 5e

Cat 5e cable is an enhanced version of Cat 5 that adds specifications for far end crosstalk. It was formally defined in 2001 in the TIA/EIA-568-B standard, which no longer recognizes the original Cat 5 specification. Although 1000BASE-T was designed for use with Cat 5 cable, the tighter specifications associated with Cat 5e cable and connectors make it an excellent choice for use with 1000BASE-T. Despite the stricter performance specifications, Cat 5e cable does not enable longer cable distances for Ethernet networks: cables are still limited to a maximum of 328 ft (100 m) in length (normal practice is to limit fixed ("horizontal") cables to 90 m to allow for up to 5 m of patch cable at each end). Cat 5e cable performance characteristics and test methods are defined in TIA/EIA-568-B.2-2001. Far End Crosstalk (FEXT) is an electromagnetic interference (EMI), a type of crosstalk, introduced on UTP by close-by wires, usually running in parallel with the FEXT induced wire. ... TIA/EIA-568-B is a set of three telecommunications standards from the Telecommunications Industry Association, a 1988 offshoot of the EIA. The standards address commercial building cabling for telecom products and services. ... Gigabit Ethernet (GbE or 1 GigE) is a term describing various technologies for transmitting Ethernet frames at a rate of a gigabit per second, as defined by the IEEE 802. ...

Connectors and other information

The cable exists in both stranded and solid conductor forms. The stranded form is more flexible and withstands more bending without breaking and is suited for reliable connections with insulation piercing connectors, but makes unreliable connections in insulation displacement connectors. The solid form is less expensive and makes reliable connections into insulation displacement connectors, but makes unreliable connections in insulation piercing connectors. Taking these things into account, building wiring (for example, the wiring inside the wall that connects a wall socket to a central patch panel) is solid core, while patch cables (for example, the movable cable that plugs into the wall socket on one end and a computer on the other) are stranded.

Cable types, connector types and cabling topologies are defined by TIA/EIA-568-B. Nearly always, 8P8C modular connectors, often incorrectly referred to as "RJ-45", are used for connecting category 5 cable. TIA/EIA-568-B is a set of three telecommunications standards from the Telecommunications Industry Association, a 1988 offshoot of the EIA. The standards address commercial building cabling for telecom products and services. ... An 8P8C modular plug that has yet to be crimped onto a cable Cat5 cables with 8P8C modular plugs, wired to EIA/TIA-568B 8P8C is short for eight positions, eight conductors, and so an 8P8C modular connector (plug or jack) is a modular connector with eight positions, all containing... This article does not cite any references or sources. ... A registered jack (RJ) is a standardized physical interface for connecting telecommunications equipment (commonly, a telephone jack) or computer networking equipment. ...

The cable is terminated in either the T568A scheme or the T568B scheme. It doesn't make any difference which is used, as they are both straight through (pin 1 to 1, pin 2 to 2, etc), as long as one standard is used consistently. The article Ethernet over twisted pair describes how the cable is used for Ethernet, including special "cross over" cables. Twisted-pair cable used with 10BASE-T 8P8C (not RJ-45) plug used with 10BASE-T There are several standards for Ethernet over twisted pair cable. ... Crossover cable suitable for use with 100BASE-T4 Fast Ethernet 8P8C modular crossover adapter Compare crossover cable pinout with standard pinout. ...

Mixed cable types should not be connected in serial, as the impedance per pair differs and would cause signal degradation.

See also

Cat 6- Category - 6, (ANSI/TIA/EIA-568-B.2-1) is a cable standard for Gigabit Ethernet and other network protocols that is backward compatible with the Category 5/5e and Category 3 cable standards. ...

External links

Categories: Ethernet | Networking hardware | Signal cables Data Center Structured Cabling is defined as building or campus telecommunications cabling infrastructure that consists of a number of standardized smaller elements (hence structured) called subsystems. ... Category 1 cable (Cat 1) is a grade of UTP cabling defined in the EIA/TIA-568B standard. ... Plain old telephone service, or POTS, are the services available from analogue telephones prior to the introduction of electronic telephone exchanges into the public switched telephone network. ... Category 2 cable, or simply Cat 2, is a grade of unshielded twisted pair cabling described by the EIA/TIA-568B standard. ... Token-Ring local area network (LAN) technology was developed and promoted by IBM in the early 1980s and standardised as IEEE 802. ... Category 3 cable, commonly known as Cat 3, is an unshielded twisted pair (UTP) cable designed to reliably carry data up to 10 Mbit/s, with a possible bandwidth of 16 MHz. ... TIA/EIA-568-B is a set of three telecommunications standards from the Telecommunications Industry Association, a 1988 offshoot of the EIA. The standards address commercial building cabling for telecom products and services. ... Ethernet is a large, diverse family of frame-based computer networking technologies that operate at many speeds for local area networks (LANs). ... Category 4 is a description of network cabling that consists of four UTP wires with a data rate of 16Mbps and was used in token ring networks, 10BASE-T, 100BASE-T4, and is no longer common or used. ... Cat5 patch cable Category 5 cable, commonly known as Cat 5, is a twisted pair cable type designed for high signal integrity. ... TIA/EIA-568-B is a set of three telecommunications standards from the Telecommunications Industry Association, a 1988 offshoot of the EIA. The standards address commercial building cabling for telecom products and services. ... Cat 6- Category - 6, (ANSI/TIA/EIA-568-B.2-1) is a cable standard for Gigabit Ethernet and other network protocols that is backward compatible with the Category 5/5e and Category 3 cable standards. ... TIA/EIA-568-B is a set of three telecommunications standards from the Telecommunications Industry Association, a 1988 offshoot of the EIA. The standards address commercial building cabling for telecom products and services. ... Cat 6- Category - 6, (ANSI/TIA/EIA-568-B.2-1) is a cable standard for Gigabit Ethernet and other network protocols that is backward compatible with the Category 5/5e and Category 3 cable standards. ... Category 7 cable (CAT7), (ISO/IEC 11801:2002 category 7/class F), is a cable standard for Ethernet and other interconnect technologies that can be made to be backwards compatible with traditional CAT5 and CAT6 Ethernet cable. ... ISO/IEC 11801 is an information security standard published by the International Organization for Standardization and the International Electrotechnical Commission. ... TIA/EIA-568-B is a set of three telecommunications standards from the Telecommunications Industry Association, a 1988 offshoot of the EIA. The standards address commercial building cabling for telecom products and services. ... Ethernet is a large, diverse family of frame-based computer networking technologies that operate at many speeds for local area networks (LANs). ... An 8P8C modular plug that has yet to be crimped onto a cable Cat5 cables with 8P8C modular plugs, wired to EIA/TIA-568B 8P8C is short for eight positions, eight conductors, and so an 8P8C modular connector (plug or jack) is a modular connector with eight positions, all containing... Crossover cable suitable for use with 100BASE-T4 Fast Ethernet 8P8C modular crossover adapter Compare crossover cable pinout with standard pinout. ... 25 Pair Color Code Chart 10BASE-T UTP Cable Twisted pair cabling is a common form of wiring in which two conductors are wound around each other for the purposes of cancelling out electromagnetic interference known as crosstalk. ...

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