AVU isn't even remotley accurate, alot of things with this program are the same.
here is a picture of the box in my conservatory, it has no other connection only my server.
View attachment 64042
if your worried about a peer keep refreshing cccaminfo every 2 seconds, it will show if he is taking ecms for different channels. I had to cut a peer that was taking ecms for 8 different channels at the same time.