Hello, friend!
The U2000 supports ONT configuration backup but does not support batch ONT configuration backup.
In the Main Topology, double-click the required NE in the Physical Root navigation tree, or right-click the required NE and choose NE Explorer from the shortcut menu.
1. Choose GPON > GPON Management from the navigation tree.
2. On the GPON ONU tab page, set the filter criteria or click -> to display the required GPON ONUs.
3. In the GPON ONU list, right-click a record and choose Maintain ONT from the shortcut menu.
4. Then select Log Backup.
Thanks!