You can restore a previous backup by copying a configuration file from a card in the Optional SD slot, to the System SD card and restart the system with the new configuration.
•! WARNING
This process will restart the phone system and disconnect all currently connected calls.
•This procedure is not listed when using the Next Procedure or Previous Procedure buttons to select a procedure.
1408/1416/9504/9508 Phone
1.At either of the first two extensions on the system, press Admin.
•To do the above during a call, you may need to press the 
PHONE button to display the Admin soft key option. If you access phone administration during a call, only the 
SPEAKER, 
MUTE and 
HEADSET buttons still affect the connected call.
2.Use the 
up or down 
arrow buttons to scroll the display to System Administration. When highlighted, press Select.
3.Dial #125. The display will show System Manual Backup:. Press Proceed to start the restore.
4.If Proceed is not displayed or there is a problem, additional text messages may be displayed.
•Shutdown and Insert Card
No card was detected in the phone system's System SD card slot. For correct operation of the phone system the Avaya SD card should always be present at all times.
•System Busy
Another backup, restore, upgrade or copy was already in progress at the time the manual process was requested.
•Restore Failed: Try Again
This message indicates that there was some problem. For example the card in the phone system's System SD card slot was removed during the restoration or the card has become corrupted.
5.If the restore is successful, the system will be restarted.
M7324/M7324N/M7310/M7310N/T7316/T7316E Phone
1.At either of the first two extensions on the system, press 
Feature **config (ie. Feature **266344).
•If the system has a system password set, it is requested. Enter the password.
2.The phone displays System Admin.
3.Dial #125. The display shows System Manual Restore.
4.Press Enter to start the restore.
•Shutdown and Insert Card
No card was detected in the phone system's System SD card slot. For correct operation of the phone system the Avaya SD card should always be present at all times.
•System Busy
Another backup, restore, upgrade or copy was already in progress at the time the manual process was requested.
•Restore Failed: Try Again
This message indicates that there was some problem. For example the card in the phone system's System SD card slot was removed during the restoration or the card has become corrupted.
ETR 18D/ETR 34D Phone
1.At either or the first two extensions on the system, press Feature 0 0 followed by two presses of the first intercom or call appearance button.
2.System Administration: is shown on the display.
3.Dial #125. The display shows System Manual Restore.
4.Press Enter to start the restore.
•Shutdown and Insert Card
No card was detected in the phone system's System SD card slot. For correct operation of the phone system the Avaya SD card should always be present at all times.
•System Busy
Another backup, restore, upgrade or copy was already in progress at the time the manual process was requested.
•Restore Failed: Try Again
This message indicates that there was some problem. For example the card in the phone system's System SD card slot was removed during the restoration or the card has become corrupted.
4.If the restore is successful, the system will be restarted.