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In order to be considered, the connector system had to be defined by an international standard, leading to the creation of the ISO 8877 standard. Under the rules of the IEEE 802 standards project, international standards are to be preferred over national standards, so when the original 10BASE-T twisted-pair wiring version of Ethernet was ...
The first version of the standard, EIA/TIA-568, was released in 1991. The standard was updated to revision A in 1995. ... RJ-45 Connector, ProAV.de "UTP Cable ...
A standard 8P8C (often called RJ45) connector used most commonly on category 5 cable, one of the types of cabling used in Ethernet networks Standard IEEE 802.3 (1983 onwards) Physical media Twisted pair, optical fiber, coaxial cable Network topology Point-to-point, star, bus Major variants
Although commonly referred to as RJ45 in the context of Ethernet and structured cabling, RJ45 originally referred to a specific wiring configuration of an 8P8C female connector. [ 14 ] [ 15 ] [ 16 ] The original telephone-system-standard RJ45 plug has a key that excludes insertion in an un-keyed 8P8C socket.
The Category 7 cable standard was ratified in 2002, and primarily introduced to support 10 gigabit Ethernet over 100 m of copper cabling. [2] It contains four twisted copper wire pairs, just like the earlier standards, terminated either with GG45 electrical connectors or with TERA connectors rated for transmission frequencies of up to 600 MHz.
Several manufacturers used other pinouts for RJ-45 connectors prior to this inclusion in the standard. Other form-factors of connectors are permitted on equipment where the XLR and RJ-45 would not fit or are considered inappropriate, for example on equipment intended for permanent installation. From ANSI E1.11 - 2008 section 7:
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