Aastra Telecom IP Phone - Manual (Page 197)

Model 57i IP Phone User Guide 189
Troubleshooting Solutions
Lock the Phone
2. In the "Lock the Phone?" field, click .
The phone locks dynamically and displays the following message:
"Phone is locked".
Unlock the Phone
3. Click on Operation->Phone Lock.
4. In the "Unlock the Phone?" field, click .
The phone unlocks dynamically and displays the following message:
"Phone is unlocked".