Simple BCM 4.0 system with Centrex lines. I am getting intermittant caller id on inbound calls. Installed 2 weeks ago with up to date patches and all lines were initally good. After 3 days it started with 1 phone not receiving on their private line. (any transferred calls are ok) Now it is up to 4 lines. The lines are also on different cards. Monitor is not showing a number when called so I checked at the frame with an analog display set and the CO is sending the number. I didn't see anything on Nortel site for this problem. Maybe a reboot is in order. Any ideas?