I have a customer that has 7 sites networked together with a common Call Pilot 4.0 system. At one of the locations (not where the CP resides)about 160 digital sets were removed, and these where converted to IP sets. The voicemail hard drive had to be replaced 3 months ago, and all Auto Attendants and Mailboxes had to be rebuilt. Since that time, a few (10 or less)of the ip sets (i2004's, & 1120e's) won't give the indication when there is a new message in the mailbox. I can force the lights on and off from the maintenance set. The mailboxes have been deleted and rebuilt. This doesn't happen with any of the digital sets on any of the switches, just IP sets. I also don't have this problem with ip sets on the PBX where the Call Pilot is installed. All IP sets are at the latest firmware.