Step1
Deregister handset from Base station:
Press “OK” button → Navigate to “Settings” → “Registration” → “De-reg.Handset” → Enter Pin “0000” to confirm Deregistration. After specifying your handset, press “Select” → the Message “De-Register” appears Press “Yes” to delete registration from base.
Step 2
Reset Handset Settings Press “OK” button → Navigate to “Settings” → “System Settings” → “Handset Reset” → Select “OK”. The Message “Reset Handset to default” appears, Press “Enter” and insert Pin code “0000”. Press “Yes” to confirm.