Something very weird preceded all of this - no calls were coming in or out on Monday - it took me awhile to figure out that the licensing was showing up invalid, and the only way I could correct that was to reinstall the Admin software. It seemed like something really whacked the system. Don't know if there was a power spike, or something similar. The BP1 port is tied to an outside access gate box. Of course, no surge protection. That is the port that is showing busy all the time.
So, I'm thinking the only remedy is to either replace the 406 box or add an analog expansion module - correct?
Thanks again.