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The Attachment Unit Interface (AUI) is a physical and logical interface defined in the IEEE 802.3 standard for 10BASE5 Ethernet [1] and the earlier DIX standard. The physical interface consists of a 15-pin D-subminiature connector that links an Ethernet node's physical signaling to the Medium Attachment Unit (MAU), [ 2 ] sometimes referred to ...
A Medium Attachment Unit (MAU) is a transceiver which converts signals on an Ethernet cable to and from Attachment Unit Interface (AUI) signals. On original 10BASE5 (thicknet) Ethernet equipment, the MAU was typically clamped to the Ethernet wire via a vampire tap and connected by a multi-wire cable to the computer via a DA-15 port, which was ...
10BASE5 Thick Ethernet DIX Standard: 802.3-1983 (CL8) obsolete 09/2003 Coax RG-8 (50 Ω) AUI, N, Vampire tap: MAU: 500 1 N/A 1 LAN; original standard; electrical bus topology with collision detection; uses a single coaxial cable into which you literally tap a connection by drilling into the cable to connect to the core and screen. 10BASE2 Thin ...
An adapter containing a power supply to provide the required 12 volts was available from Apple to permit connection of standard AUI transceivers to an AAUI port. This facilitated direct connection to 10BASE-F (fibre optic) and 10BASE5 (ThickNet) Ethernet networks, for which AAUI transceivers were not available. [5]
10BASE5: 802.3-1985 (8) AUI, N, vampire tap: 500 m RG-8/U Original standard uses a single coaxial cable in which a connection is made by tapping into the single cable, drilling in to make contact with the core and the screen. Largely obsolete, though due to its widespread deployment in the early 1980s, some systems may still be in use.
10BASE5 10 Mbit/s (1.25 MB/s) over thick coax. First edition of the IEEE 802.3 standard. Approved by IEEE in 1983, approved by ANSI in 1984, and published in 1985. Same as Ethernet II (above) except Type field is replaced by Length, and an 802.2 LLC header follows the 802.3 header.
10BASE5 (also known as thick Ethernet or thicknet) was the first commercially available variant of Ethernet. The technology was standardized in 1982 [ 1 ] as IEEE 802.3 . 10BASE5 uses a thick and stiff coaxial cable [ 2 ] up to 500 meters (1,600 ft) in length.
These can be transceivers for 10BASE2, but also for 10BASE5 or 10BASE-T. Some NICs offer both BNC and AUI connectors, or other combinations including BNC and 10BASE-T. With multiple connections, only one connector is designed to be used at the same time.