dnelsonfl,
Can you re-verify the numbers, and look for a jumper block. I have a compatibility list in my Technical folder, but it refers to:
Panasonic JU-253-033P (with the following comments) to make it work, set MS/MD to MD, 0/1/2/3 to 0, RY/DC to RY.
If your is a "233P", please let me know, and any jumper settings. I'll add it to my listing.