I think I figured it out. In IPO System Status, if you look at your trunk for a PRI there are 4 tabs. One of them is called line testing.
This probably was because I had CSU Operation checked on the PRI config.
Once I unchecked CSU operation and rebooted. The line Testing tab in SSA went grayed out.
Must be something new control units are doing, not sure.
I am going to monitor the system to see if I still hear anything.....very strange