In superuser mode, type halt and then press Enter. Then, at the halt confirmation prompt, answer y followed by Enter.
ORACLE# halt
---------------------------------------------------------------------
WARNING: you are about to halt the SD!
---------------------------------------------------------------------
Halt this SD [y/n] ? : y
Preparing for system shutdown
Syncing and unmounting filesystems
Flushing sd devices
Powering off.......
Sent SIGKILL to all processes
Requesting system power off
Disabling non-boot CPU’s........
Power down.
To reject all incoming calls on the Acme Packet 1100, type set-system-state offline and press Enter.
ORACLE# set-system-state offline
Setting system state to going-offline, process will complete when all current calls have completed
ORACLE#
Exit the ACLI and close your console or network connection.