I have a BCM 4.0 with Call Center installed, it is a small call center, it has 12 agants and takes 400-500 calls a day. Of those 8-10 of those calls have heavy static on them, and the far end can hear the agent but all the agent hears is heavy static. I have this thing patched up, but that didnt help. The calls come in in a PRI, and it is a 4.0 only 6 weeks old, they started getting the problems 2 weeks ago. I called to carrier but they said the span is clean.