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What is the purpose of an Ethernet coupler that reverses all the pins?

Fresh5 days ago
Mar 15, 20261731 views
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Problem

As the photo shows, the pins are wired "straight across", rather than diagonally. This means that it does not work as an Ethernet/8P8C coupler because the transmit pins are mapped to unused pins (for 10/100 Mbit/s at least). Likewise, it doesn't act as a crossover either. Is it wired wrong? Or is i…

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Fix for: What is the purpose of an Ethernet coupler that reverses all the pins?

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The color coding of the wires does not comply with computer wiring standards so it isn't CAT5 or CAT6 cabling. The color code is for phone wiring - old style. All the wires are completely crossed. This is a coupler to connect to RJ-45 phone wires. P…

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