I have a customer with a BCM 50 3.0 and expansion running analog lines.They also have 4 -VoIP trunks to corporate. I guess the system re-boots every so often. I didnt see much in alarms with the exception a startup every so often. I changed power pack on main unit only as customer replace new BBU as well...latest patch was in 09'. Could this be a harddrive issue? Could busy VoIP trunks cause re-boot?Is it even worth trying to find A 3-6 upgrade? Any help is greatly appreciated!!Thanks!