If memory serves, I believe that those are analog mics with 3 mic elements in each. Connect the RJ-45 to the 3-phoenix adaptors (should have been included with the mics and plug it into the SoundStructure. They should be the same as any other analog mic-- I am not aware of any issue with them.
Do keep in mind that they have 3 mic elements in each, so they take up 3 ports on the C8, each. So if you have more than 2 (or 3 if you only use 2 elements in the last one) you're going to need to add another/bigger SoundStructure. OBAM makes it easy to add another C8, or just install a bigger one...
Hope this helps