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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

    IEC 63171-6 industrial: [6] This standard defines five 2-pin connectors that differ in their locking mechanisms, and one 4-pin connector with dedicated pins for power. The locking mechanisms range from a metal locking tab to M8 and M12 connectors with screw or push-pull locking. The 4-pin connector is only defined with M8 screw locking.

  4. 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 ...

  5. Ethernet crossover cable - Wikipedia

    en.wikipedia.org/wiki/Ethernet_crossover_cable

    This wiring scheme constitutes a crossover cable. A crossover cable may also be used to connect two hubs or two switches on their upstream ports. 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 ...

  6. 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).

  7. Category 5 cable - Wikipedia

    en.wikipedia.org/wiki/Category_5_cable

    The cable standard prescribes performance parameters for frequencies up to 100 MHz and is suitable for 10BASE-T, 100BASE-TX (Fast Ethernet), 1000BASE-T (Gigabit Ethernet), and 2.5GBASE-T. 10BASE-T and 100BASE-TX Ethernet connections require two wire pairs. 1000BASE-T and faster Ethernet connections require four wire pairs.

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