System Shutdown

Before you shut down or restart the Acme Packet 4900, ensure that there are no active calls in progress. The command to show active calls is “show sessions.”

ACMEPACKET# show sessions

Procedures to reroute call and network traffic around the Acme Packet 4900 are outside the scope of this guide.

You can set the Acme Packet 4900 to reject all incoming calls from your system with the set-system-state command. When set to offline, this command lets calls in progress continue uninterrupted, but no new calls are admitted.

After all call processing has stopped, you can power off your Acme Packet 4900. Shutting down the system is appropriate when you are replacing a power supply or are removing the Acme Packet 4900 from the equipment rack.

Rejecting Incoming Calls

To reject all incoming calls on the Acme Packet 4900:

In Superuser mode, type show sessions to see all the current calls.
```
ACMEPACKET# show sessions
```

Type set-system-state offline and press Enter.

ACMEPACKET# set-system-state offline
 Setting system state to going-offline, process will complete when all current calls have completed
 ACMEPACKET#

Shut Down the Acme Packet

In Superuser mode, type halt.
To confirm the halt request, type Y.
Power down the system by a long press of the power button.
Confirm that all fans are off.
Remove the power cords if servicing the system.