I just upgraded to CallPilot 3.1 and my MICS from 4.1 to 6.1 to 7.1. Since then, if someone parks a call that comes in on line 8 ("intercom" on our handsets) all handsets start ringing on intercom. You must then walk around to each handset and pick up the intercom line, which gives a busy signal after a few seconds. Then you can release the "call". Otherwise they all keep ringing. The real call, however, is parked fine and can be picked up fine. Odd, right?