So I needed two small DC relays with SPST contacts and 4 diodes to provide each relay with a polarity, and a spike absorbing diode. I made a schematic drawing of the  two relays with a common connection to each coil, and a series diode one wired  forward and one wired reverse sharing the other common connection.

When  I added the spike absorbing diodes, I noticed that all 4 diodes formed a Bridge Rectifier !

Then on a small perf board I wired up (2) DC relays with 12 volt DC coils and a bridge rectifier. I provided screw terminal connections to connect to the 2 wires from the Phone equipment room, and screw terminal connections for the contacts on each relay to control the situation outside. This was able to fit inside the outside wire box.