Aastra SIP 53I Administrator's Manual page 223

Configuring Operational Features
Operational Features
Configuring a Lock/Unlock Key using the Aastra Web UI
Using the Aastra Web UI, you can configure a key on the phone (softkey,
programmable key, expansion module key) to use as a lock/unlock key. In the
Aastra Web UI, you assign the function of the as "Phone Lock".
Use the following procedure to configure a key as a lock/unlock key using the
Aastra Web UI.
Aastra Web UI
1 Click on Operation->Softkeys and XML
or
Click on Operation->Programmable Keys
or
Click on Operation->Expansion Module <N>.
Note: Depending on your phone-model, the key configuration screen displays. The 57i Key Screen is
shown as an example.
2 Select a key you want to configure for locking/unlocking the phone.
41-001160-00, Release 2.1, Rev 04 5-13