IPVMU Certified | 08/02/13 04:41pm
Working on a bus implementation. Implementing Seneca Xvault w/ built-in 8p PoE switch. Cameras are mostly Axis M3114-R in the 2mm variety. The regular M3114-R comes in either RJ45 or M12. The 2mm variety only comes in M12. Whatever... We had nice factory M12 to RJ cables made up, went on our way.
What we've found is the embedded PoE switch (a JetCard 2215) built into the Seneca only appears to support Alternative B of the 802.3af standard which is the crappier (IMO) option where it uses the unused pairs 4,5,7,8. It doesn't not appear to support Alternative A, which most things do, which is more like phantom power, leveraging the same pins as the data (1,2,3,6). Since the M12 is only a 2 pair connector... no go. Explained all this to Seneca this afternoon... they are processing the info, we'll see what they say.
This is a little bit of an odd one but thought I'd pass it along.