Tonight, I figured out how to hook up the 1982 Western Electric 500DM Rotary Phone to an Arduino.
After you dial, the number appears on the 7-Segment LED Chip (Bottom Right).
After Dialing 7 Digits, the LED Blinks a couple of times.
This is just the baby steps of a bigger project where I want to Convert this Rotary Phone into an Iphone Call/Text Indicator (make it ring when I get a call) + Charging Station + MP3 player.