I believe the E in CDE signifies EuroDOCSIS. If you look at Hitron-Americas, you can see their modems start with CDA for Americas.
I could be wrong, but that's what I'm seeing: http://www.hitron-americas.com/product-category/modem/
I could be wrong, but that's what I'm seeing: http://www.hitron-americas.com/product-category/modem/