Restore backup from FLASH memory feature
From Zenitel Wiki
| Feature: | Restore backup of running configuration |
| Default directory number: | 7819 |
| Feature number: | 42 |
| Parameter 1: | 0 (N/A) |
| Description: | Restores the backup of the running configuration. Dial 7819, then acknowledge with M-key. When finnished, the exchange will do a reset. |