Aastra 9480i User Manual page 239

Lock the Phone
2. In the "Lock the Phone?" field, click Lock.
The phone locks dynamically and displays the following message:
"Phone is locked".
Unlock the Phone
3. Click Operation->Phone Lock.
4. In the "Unlock the Phone?" field, click Unlock.
The phone unlocks dynamically and displays the following message:
"Phone is unlocked".
Model 9480i IP Phone User Guide 233