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

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 it a special form of a 1000Base-T crossover? Or is it perhaps used to correct the pins from another reversed device...?

Solution 1:

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. Probably was used to extend wire for a old office phone.