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The distinction can be arbitrary between a computer bus, ... (11/15) 300 Mbit/s: ... (High Speed) 200 Mbit/s: 25 MB/s ...
Generally, layers are named by their specifications: [8] 10, 100, 1000, 10G, ... – the nominal, usable speed at the top of the physical layer (no suffix = megabit/s, G = gigabit/s), excluding line codes but including other physical layer overhead (preamble, SFD, IPG); some WAN PHYs (W) run at slightly reduced bitrates for compatibility reasons; encoded PHY sublayers usually run at higher ...
Speed (Mbit/s) [A] Pairs required Lanes per direction Data rate efficiency (bit/s/Hz) [B] Line code Symbol rate per lane (MBd) Bandwidth (MHz) [C] Max distance (m) Cable [D] Cable rating (MHz) Intended usage StarLAN-1 1BASE5: 802.3e-1987: obsolete 1 2 1 1 PE 1 1 250 voice grade ~12 LAN: StarLAN-10 802.3e-1988: obsolete 10 2 1 1 PE 10 10 ~100 ...
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]
RJ45 is often incorrectly used when referring to an 8P8C connector used for ANSI/TIA-568 T568A and T568B and Ethernet, however, the plug used for RJ45 is both mechanically and electrically incompatible with any Ethernet port: it cannot fit into an Ethernet port, and it is wired in a way that is incompatible with Ethernet. The connector commonly ...
100BASE-LFX is a non-standard term to refer to Fast Ethernet transmission. It is very similar to 100BASE-FX but achieves longer distances up to 4–5 km over a pair of multi-mode fibers through the use of Fabry–Pérot laser transmitter [25] running on 1310 nm wavelength. The signal attenuation per km at 1300 nm is about half the loss of 850 nm.
Perhaps the most comprehensive 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. Pinouts are critical because cables do not function if the pinouts at their two ends aren't correctly matched.
The most common type uses Category 5 cables (four twisted pairs with 100 ohm impedance) between 8P8C (colloquially and incorrectly called RJ45) room sockets and a central patch panel. The A and B wires of an analogue phone line appear in a structured cabling system usually on the centre pins of the 8P8C connector (pins 4 and 5; the blue/white ...