Mega Modem and endNode

I seem to have trouble connecting Mega Modem and endNode (4X4-20mA AI),
I can see either with alpha station, but the mega modem does not discover the endNode,
Did I get the right devices? are these two supposed to talk together? any help?

@ryan1 do you have doc for this

those posted on the ncd web-site for each module under Resources tab