Geddy:
I live in SW Fl and we have frequent power issues.
I have my Polisy and network items on backups.
In rare cases the backups run out when this occurs Polisy or previous ISY994i reboots, the Admin Console shows the ramp rate at 9 minutes. This prevents Voice from working because of the long delay.
When I query devices they all go back to 0.1 seconds and then they all work fine.
I run a query daily to look and adjust that time if necessary.