How do I disable the CTCSS/DCS tone on the Durafon-UHF? EnGenius Updated January 31, 2017 20:22 Follow Press Mode button three times. Use the up and down button to change the code. (Set “code” to “0”) Related articles Mounting EnGenius Routers on a Desktop Can the DuraFon-UHF handset work with a repeater system? Can the DuraFon-UHF handset support frequencies outside the predefined channels? Comments 0 comments Please sign in to leave a comment.