On-topic question...

[Matt Ion <soundy106@xxxxxxxxx>]

...I know, what is the group coming to?

Before I just dive in and try this, maybe someone can answer me a quick
question: would a DSC keypad perchance work with a Paradox panel?

I've recently "come into" an SP-6000 panel and figure I might as well
replace the (relatively) ancient DSC PC1500 that came with my place (and
maybe use it to replace the fried 1550 in my sister's place)... but will
I need to replace my existing keypad?  Do these panels use proprietary
protocols with their keypads?

I'm guessing it probably won't work, but it's worth asking...