Anyone have any issues with this voicemail. We have a site that has it with 8 ports active. Somewhat busy system. 2 problems.

1. During monthly maint. system does not come back up. Must be manually rebooted.

2. About 10 to 15 days after monthly maint. system locks up and must be rebooted.

There are no errors shown in the 500r2 nor the voicemail It just stops processing.

Any thoughts?