3300 controller with Fd pernode attached has a DNI card in 1st slot. The ist circuit has the SC1000 and 15 4025 sets. Console and phones lose sync 5 to 6 times a day for about 20 seconds and restore Have replaced the the MC330 DNI card. No alarms on PBX and syslog says 8 1 1 1 removed due to loss of sync. The DNI and ONS cards in slots 2 thru 10 are not affected only the DNI card in slot 1. Has anyone ever experienced this before. Maybe the power supply but I would think all the cards would then be affected. Maybe the SC1000 or bad phone attached to the card? the log always only shows that 1st circuit has loss sync