56xx phones factory default after vlan settings

[IamaSherpa]

Some 56xx phones should be re-used on a different system but at boot no chance to enter the settings with the "*" option, so they go in DHCP only, I suppose because they were originally configured with a VLAN tagging, is there a way to factory default if not connected to any system yet?

The use of a flat 46xx file is the only chance to clean them all?

 

[TomMills]

I would think so if the option to edit the settings has been disabled.

APSS/ACIS/ACSS-SME
not arrogant, just succinct.