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What pin assignments are used in twisted-pair Ethernet cabling?

April 26, 2017assignments cabling Ethernet Pin Used

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What pin assignments are used in twisted-pair Ethernet cabling?

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Twisted-pair Ethernet (10BASE-T, 100BASE-T, or 1000BASE-T) uses an RJ-45 connector, which is an eight-pin modular connector. • Contact 1 Transmit + • Contact 2 Transmit – • Contact 3 Receive + • Contact 4 Not Used • Contact 5 Not Used • Contact 6 Receive – • Contact 7 Not Used • Contact 8 Not Used When looking at an RJ-45 wall jack (female), contact 1 is on the left and contact 8 is to the right. When looking at the RJ-45 connector on the end of a cable (male) with the tab on the bottom and the contacts on the top, contact 8 is on the left and contact 1 is to the right.