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  2. Category 5 cable - Wikipedia

    en.wikipedia.org/wiki/Category_5_cable

    Cross section of a cat 5e cable. The Category 5e specification improves upon the Category 5 specification by further mitigating crosstalk. [9] The bandwidth (100 MHz) and physical construction are the same between the two, [10] and most Cat 5 cables actually happen to meet Cat 5e specifications even though they are not certified as such. [11]

  3. Punch-down block - Wikipedia

    en.wikipedia.org/wiki/Punch-down_block

    A tool called a punch down tool is used to push the wire down firmly and properly into the slot. Some will automatically cut any excess wire off. [ 1 ] The exact size and shape of the tool blade varies by manufacturer, which can cause problems for those working on existing installations, especially when there is a poorly documented mix of ...

  4. Ethernet over twisted pair - Wikipedia

    en.wikipedia.org/wiki/Ethernet_over_twisted_pair

    Since common Category 5 cable has four pairs, it is possible to use the spare pairs (pins 4–5, 7–8) in 10- and 100-Mbit/s configurations for other purposes. The spare pairs may be used for power over Ethernet (PoE), for two plain old telephone service (POTS) lines, or for a second 10BASE-T or 100BASE-TX connection.

  5. Structured cabling - Wikipedia

    en.wikipedia.org/wiki/Structured_cabling

    Equipment rooms house equipment and wiring consolidation points that serve the users inside the building or campus. Backbone cabling is the inter-building and intra-building cable connections in structured cabling between entrance facilities, equipment rooms and telecommunications closets. Backbone cabling consists of the transmission media ...

  6. 66 block - Wikipedia

    en.wikipedia.org/wiki/66_block

    A split-50 M-type 66 block with bridging clips attached. A 66 block is a type of punch-down block used to connect sets of wires in a telephone system. They have been manufactured in four common configurations, A, B, E and M. [a] A and B styles have the clip rows on 0.25" centers while E and M have the clip rows on 0.20" centers.

  7. ISO/IEC 11801 - Wikipedia

    en.wikipedia.org/wiki/ISO/IEC_11801

    Class C: Up to 16 MHz using Category 3 cable and connectors; Class D: Up to 100 MHz using Category 5e cable and connectors; Class E: Up to 250 MHz using Category 6 cable and connectors; Class E A: Up to 500 MHz using category 6A cable and connectors (Amendments 1 and 2 to ISO/IEC 11801, 2nd Ed.) Class F: Up to 600 MHz using Category 7 cable and ...

  8. Copper wire thefts on the rise, causing delays for Metro's ...

    www.aol.com/news/copper-wire-thefts-rise-causing...

    A surge of thefts of valuable copper wiring has caused disruptions for the Metro rail system, which serves more than 5 million riders a month. Copper wire thefts on the rise, causing delays for ...

  9. 2.5GBASE-T and 5GBASE-T - Wikipedia

    en.wikipedia.org/wiki/2.5GBASE-T_and_5GBASE-T

    By reducing the original signal rate to 1 ⁄ 4 or 1 ⁄ 2, the link speed drops to 2.5 or 5 Gbit/s, respectively. [5] The spectral bandwidth of the signal is reduced accordingly, lowering the requirements on the cabling, so that 2.5GBASE-T and 5GBASE-T can be deployed at a cable length of up to 100 m on Cat 5e or better cables. [6] [7]