TIA/EIA-568

TIA/EIA-568-BT568AT568BANSI/EIA/TIA 568BANSI/TIA-568-C.1ANSI/TIA/EIA-568-B.1RJ45straight-throughT568A or T568BT568A/T568B
ANSI/TIA-568 is a set of telecommunications standards from the Telecommunications Industry Association (TIA).wikipedia
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Telecommunications Industry Association

TIATelecommunications Industry Association (TIA)
ANSI/TIA-568 is a set of telecommunications standards from the Telecommunications Industry Association (TIA).

Category 5 cable

CAT5Cat 5Cat 5e
Category 5 cable, with more restrictions on attenuation and cross talk, has a bandwidth of 100 MHz. The standard specifies how to connect eight-conductor 100-ohm balanced twisted-pair cabling, such as Category 5 cable, to 8P8C modular connectors (often called RJ45 connectors).
The specification for category 5 cable was defined in ANSI/TIA/EIA-568-A, with clarification in TSB-95.

Structured cabling

cable plantcablingcategory cable
ANSI/TIA-568 defines structured cabling system standards for commercial buildings, and between buildings in campus environments.
Lines patched as data ports into a network switch require simple straight-through patch cables at each end to connect a computer.

Category 3 cable

Cat 3Cat-3Cat3
Category 3 cable was suitable for telephone circuits and data rates up to 16 million bits per second.
It is part of a family of copper cabling standards defined jointly by the Electronic Industries Alliance (EIA) and the Telecommunications Industry Association (TIA) and published in TIA/EIA-568-B.

Twisted pair

unshielded twisted pairtwisted-pairshielded twisted pair
Perhaps the best known features of ANSI/TIA-568 are the pin/pair assignments for eight-conductor 100-ohm balanced twisted pair cabling. The development of high-performance twisted pair cabling and the popularization of fiber optic cables also drove significant change in the standards.

Pinout

pin-outpinoutsBallout
Perhaps the widest known and most discussed feature of ANSI/TIA-568 is the definition of the pin-to-pair assignments, or pinout, between the pins in a connector (a plug or a socket) and the wires in a cable.
If one has specified wires within a cable (for instance, the colored Ethernet cable wires in TIA/EIA-568-B), then the order in which different color wires are attached to pins of an electrical connector defines the wiring scheme.

Modular connector

8P8C8P8C modular connector4P4C
The standard specifies how to connect eight-conductor 100-ohm balanced twisted-pair cabling, such as Category 5 cable, to 8P8C modular connectors (often called RJ45 connectors).
Telephone network connections are standardized by registered jack designations, and Ethernet over twisted pair is specified by the TIA/EIA-568 standard.

Ethernet crossover cable

crossover cablecrossover cablescross cable
Wiring the ends of the same cable according to different configurations (568A on one end and 568B on the other) will create a crossover cable.
Because the only difference between the T568A and T568B pin and pair assignments are that pairs 2 and 3 are swapped, a crossover cable may be envisioned as a cable with one modular connector following T568A and the other T568B (see TIA/EIA-568 wiring).

Registered jack

RJ11RJ-11RJ45
In Digital Signal 1 (T1) service, the pairs 1 and 3 (T568A) are used, and the USOC-8 jack is wired as per spec RJ-48C.
Ethernet over twisted pair (10BASE-T, 100BASE-TX and 1000BASE-T) also use a different wiring for the same connector, either T568A or T568B.

ISO/IEC 11801

Category 7 cableCat 7Category 7
*ISO/IEC 11801, similar standards for network cables

Telecommunication

telecommunicationscommunicationstelecom
ANSI/TIA-568 is a set of telecommunications standards from the Telecommunications Industry Association (TIA).

Commercial building

commercialcommercial buildingscommercial complex
The standards address commercial building cabling for telecommunications products and services.

Electronic Industries Alliance

EIAElectronic Industries AssociationRadio Manufacturers Association
Work on the standard began with the Electronic Industries Alliance (EIA), to define standards for telecommunications cabling systems.

Computer network

networkcomputer networkingnetworking
The demands placed upon commercial wiring systems increased dramatically over this period due to the adoption of personal computers and data communication networks and advances in those technologies.

Optical fiber

fiber opticfiber opticsfiber-optic
The development of high-performance twisted pair cabling and the popularization of fiber optic cables also drove significant change in the standards.

Electrical termination

terminatedterminationterminator
The bulk of the standards define cabling types, distances, connectors, cable system architectures, cable termination standards and performance characteristics, cable installation requirements and methods of testing installed cable.

Gigabit Ethernet

1000BASE-TGigabit1000BASE-SX
This effort has been largely successful, as evidenced by the definition of category 5 cabling in 1991, a cabling standard that (mostly) satisfied cabling requirements for 1000BASE-T, released in 1999.

Star network

star topologystarstar-topology
ANSI/TIA-568-D defines a hierarchical cable system architecture, in which a main cross-connect (MCC) is connected via a star topology across backbone cabling to intermediate cross-connects (ICC) and horizontal cross-connects (HCC).

Distribution frame

optical distribution frameDDFDigital distribution frame
Many people refer to cross-connects by their telecommunications names: "distribution frames" (with the various hierarchies called MDFs, IDFs and wiring closets).

Main distribution frame

MDFmainMDFs
Many people refer to cross-connects by their telecommunications names: "distribution frames" (with the various hierarchies called MDFs, IDFs and wiring closets).

Entrance facility

Entrance facilities
Backbone cabling is also used to interconnect entrance facilities (such as telco demarcation points) to the main cross-connect.

Demarcation point

DemarkDanishDanes
Backbone cabling is also used to interconnect entrance facilities (such as telco demarcation points) to the main cross-connect.

Balanced line

balancedbalanced pairbalanced circuit
The standard specifies how to connect eight-conductor 100-ohm balanced twisted-pair cabling, such as Category 5 cable, to 8P8C modular connectors (often called RJ45 connectors).

Crosstalk

cross-talkcross talkCrosstalk (electronics)
This creates crosstalk.

Digital Signal 1

T1DS1T-1
In Digital Signal 1 (T1) service, the pairs 1 and 3 (T568A) are used, and the USOC-8 jack is wired as per spec RJ-48C.