Dreamcast Modem Question

[Gumbo]

Hey everyone,

So i was reading though the DC-PC setup guides on here and noticed that in order for it to work without a line voltage inducer the modem would have to be Version A, So i checked out my modems i have laying around (none of which are Version A sadly) and noticed i had a Version C... or at least that's what it looks like, I have a quick Google but couldn't find anything on it, so thought id ask on here if they know of a Version C?

Full number is 670-13246C

Gumbo.