with this information, you'll be able to use an authentic dial-up phone in your house!
Step 1: Cutting
cut the male end off of a modern day phone cord. its really blurry cuz of the close up.
Step 2: Wiring It Up
attach the wires as shown below (red-red yellow-yellow green-green) and leave the black one hanging, its not needed.
Step 3: Connecting
connect the old jacks together.
Step 4: Plug-it-in
plug in the male modern jack into to the wall jack, pick up the phone and it should work.