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  2. ANSI/TIA-568 - Wikipedia

    en.wikipedia.org/wiki/ANSI/TIA-568

    A cable terminated according to T568A on one end and T568B on the other is a crossover cable when used with the earlier twisted-pair Ethernet standards that use only two of the pairs because the pairs used happen to be pairs 2 and 3, the same pairs on which T568A and T568B differ. Crossover cables are occasionally needed for 10BASE-T and ...

  3. Ethernet over twisted pair - Wikipedia

    en.wikipedia.org/wiki/Ethernet_over_twisted_pair

    Most Ethernet cables are wired straight-through (pin 1 to pin 1, pin 2 to pin 2, and so on). In some instances, the crossover form (receive to transmit and transmit to receive) may still be required. Cables for Ethernet may be wired to either the T568A or T568B termination standards at both ends of the cable. Since these standards differ only ...

  4. Ethernet crossover cable - Wikipedia

    en.wikipedia.org/wiki/Ethernet_crossover_cable

    A standard straight-through cable is used for this purpose where each pin of the connector on one end is connected to the corresponding pin on the other connector. One terminal may be connected directly to another without the use of a switch or hub, but in that case, the crossover must be done in the cabling.

  5. Modular connector - Wikipedia

    en.wikipedia.org/wiki/Modular_connector

    Only lines 1 and 2 have electrical compatibility, with T568A wiring, and only line 1 with T568B wiring, because Ethernet-compatible pin assignments split the third pair of RJ25 across two separate cable pairs, rendering that pair unusable by an analog phone. (With T568B wiring, a telephone may connect to line 3 as line 2.) Both the third and ...

  6. DMX512 - Wikipedia

    en.wikipedia.org/wiki/DMX512

    However, using three-pin XLR connectors for DMX512 is specifically prohibited by section 7.1.2 of the DMX512 standard. Use of the three-pin XLR in this context firstly presents a risk of damage to the lighting equipment should an audio cable carrying 48-volt phantom power be accidentally connected.

  7. IEC metric screw sized connectors - Wikipedia

    en.wikipedia.org/wiki/IEC_metric_screw_sized...

    M12 A-coded 5-pin connector: For each connector size, the A-coding is the inspecific pinout variant and the only variant defined in varying numbers of pins. Ethernet cable with an M12 X-coded connector in one end and a modular connector in the other.

  8. StarLAN - Wikipedia

    en.wikipedia.org/wiki/StarLAN

    This greatly simplified the installation of combined voice and data wiring in countries that used registered jack connectors and American wiring practices for their phone service (connecting both to the same cable was a simple matter of using a pinpin RJ45 splitter or punching down the same wires to two ports).

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

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

    The IEEE 802.3ch-2020 2.5GBASE-T1, 5GBASE-T1, and 10GBASE-T1 standards are derived from the IEEE 802.3bp-2016 1000BASE-T1 Ethernet over single twisted pair standard, and share very little in common with the similarly named 2.5GBASE-T and 5GBASE-T standards at the PHY layer. 2.5GBASE-T1, 5GBASE-T1, and 10GBASE-T1 can run over a single twisted ...

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