2N Omega series - VoIP manual v1.4 - Manual (Page 86)

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4.17. Configuration Uploading
You can upload the saved configuration into the Ethernet module.
To do this, click on the Configuration backup/Upload config item in the
Administration tag. The configuration uploading dialogue will be displayed.
Find the saved configuration backup.tgz and push Modify to upload the
configuration.
The downloaded configuration also includes the licence effective as of the
backup date. Select Do not extract licence before uploading to keep the current
licence valid.