I have an option 81 with a fiber remote cabinet. All calls associated with this loop have static. I know the problem is not in cabling and I don't believe the fiber would cause this issue. The static seems to be worse when you start talking and can be intermittent. I was also told that the problem was not as bad when only a few phones were on the loop but I haven't verified that. Could the problem possibly be in the F PEC card in the remote shelf or the remote cabinet itself? Also I have already changed out line cards with no improvement. Just looking for a good place to start. Thanks!