Hi hope someone can help me. Got 3 different OS7400 systems. Problem is that when the pabx loses power and reboots it reboots with old configs that was done previously. I've checked on SD card and deleted customer database. Daily save is set to 00:00. Systems on v4.75 and higher. Any help appreciated

This happens when oS7400's aren't initialised correctly.

You will need to backup the system.

Boot the system up with the memory switch off
boot it up with the memory switch on
reupload the programming

Thanks nameless I will give it a try