cholzhauer,
A message notification can be from any device on the system, but it is typically just the voice mail system that does it. So, since you have confirmed that x1180 is not performing a Leave Message for x1762 then it would be that MB 1180 is leaving the message for x1762; not really possible since it should be an Associated Mailbox to x1180.
My first thoughts on this are that the database is corrupted somehow. The first thing I would do is verify whether the mailbox is associated or not.
Go to View > On-Line Monitor and select it. The right-hand pane will true a dark grey color to let you know you are in that mode.
Next go to Voice Processor > Devices > Mailboxes and look for MB 1180 and verify if it is associated or not. Since On-Line Monitor is turned on a 3rd field will show up that says Associated with entries of Yes or No. Anytime there is a mailbox with the same extension as a phone it is by default Associated; if it isn't then it is corrupted. If the mailbox is not Associated with x1180 then delete it and recreate it. You can try to fix it manually, but I would say that I have only had a 50% success rate doing it that way; I only delete and recreate anymore.
So, if the mailbox is Associated then it will not allow you to make changes to Message Notification Phone and it will be stuck on x1180 unless On-Line Monitor is turned on; typically it is turned off.
The next thing I can think of is that you have Phone Manager setup to notify multiple phones.
The last thing I can think of is that you have Remote Messaging turned on MB 1180 and it is manually sending a Remote Notification to x1176 to light the message lamp; this is probably not the case as it rarely works.
Thanks,
TE
