Help with Ring Doorbell (Wired): can't identify Trans and Front terminals on doorbell chime box

Appreciate any guidance. Doorbell chime box installed upside down, without labels, could anyone please help identify the Trans and Front terminals to use a jumper cable.

Instructions were as follows, it all sounds so simple.

5. Loosen the "Front" and "Trans" terminal screws.

Make sure to keep the existing doorbell wires in place.

6. Connect the Jumper Cable.

Connect one end of the Jumper Cable to the "Front" terminal, and the other to the "Trans" terminal. It doesn't matter which wire you connect to which terminal. Be sure to tighten the terminal screws.

https://support.ring.com/hc/en-us/articles/360054984332-Installing-your-Ring-Video-Doorbell-Wired

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