Thanks Fred!
I found a deal on a Niles SPK-1:
[Link: nilesaudio.com]
Seems as thought it should work using the 12VDC input.
Found the LDB-2 here for a decent price:
[Link: homenetworkgear.com]
Do you see any problems going this route?
And do you know of any other low cost Ring/Loop detectors with 12VDC output capability?