Aastra 6755i User Manual page 210

Troubleshooting Solutions
Use the following procedures to lock an IP phone and prevent it from being used or configured.
IP Phone UI
Lock the Phone
1. Press on the phone to enter the Options List.
2. Select Phone Lock and press Select.
3. Press Yes to set the phone to lock.
The following message displays:
"Phone is locked".
Unlock the Phone
1. Press on the phone to enter the Options List.
2. Enter your user password and press Enter.
The phone unlocks
Aastra Web UI
Lock the Phone
1. Click on Operation->Phone Lock.
2. In the "Lock the Phone?" field, click Lock.
The phone locks dynamically and displays the following message:
"Phone is locked".
Unlock the Phone
1. Click on Operation->Phone Lock.
2. In the "Unlock the Phone?" field, click Unlock.
The phone unlocks dynamically and displays the following message:
"Phone is unlocked".
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41-001386-00 REV01 – 06.2013