You can use the lock feature to prevent unauthorized people from making external calls from your extension while you are away from the extension.

 

To Lock Your Extension

1.Press FEATURE 21.

2.Dial a four digit code using the 0 to 9 numbers .

3.Redial the four digit code.

 

To Unlock Your Extension

1.Press FEATURE 21.

2.Dial the four digit code you used to lock the extension.

 

The user of the first extension on the system can unlock extensions without needing to know the code used to lock the phone. They can do this using FEATURE 22.